memory handling, added a testing utility.
# (c) 2007 Pavel Charvat <pchar@ucw.cz>
DIRS+=sherlock/xml
+PROGS+=$(o)/sherlock/xml/xml-test
-LIBSHXML_MODS=xml
+LIBSHXML_MODS=common parse dtd
LIBSHXML_INCLUDES=xml.h dtd.h
LIBSHXML_MOD_PATHS=$(addprefix $(o)/sherlock/xml/,$(LIBSHXML_MODS))
$(o)/sherlock/xml/libshxml.a: $(addsuffix .o,$(LIBSHXML_MOD_PATHS))
$(o)/sherlock/xml/libshxml.so: $(addsuffix .oo,$(LIBSHXML_MOD_PATHS))
-$(o)/sherlock/xml/libshxml.pc: $(LIBUCW) $(LIBCHARSET)
+$(o)/sherlock/xml/libshxml.pc: $(LIBSH) $(LIBCHARSET)
-$(o)/sherlock/xml/xml-t: $(LIBSHXML)
-$(o)/sherlock/xml/xml.o: $(o)/sherlock/xml/unicat.h
-$(o)/sherlock/xml/unicat.h: $(s)/sherlock/xml/unicat.pl
- $(M)GEN $@
- $(Q)$< >$@
+$(o)/sherlock/xml/common.o $(o)/sherlock/xml/unicat.h: $(o)/sherlock/xml/unicat.stamp
+$(o)/sherlock/xml/unicat.stamp: $(s)/sherlock/xml/unicat.pl
+ $(M)GEN $(addprefix $(o)/sherlock/xml/unicat,.h .c)
+ $(Q)$< $(addprefix $(o)/sherlock/xml/unicat,.h .c)
+ $(Q)touch $@
+$(o)/sherlock/xml/xml-test: $(o)/sherlock/xml/xml-test.o $(LIBSHXML)
+
+API_LIBS+=libshxml
API_INCLUDES+=$(o)/sherlock/xml/.include-stamp
$(o)/sherlock/xml/.include-stamp: $(addprefix $(s)/sherlock/xml/,$(LIBSHXML_INCLUDES))
$(o)/sherlock/xml/.include-stamp: IDST=sherlock/xml
+run/lib/pkgconfig/libshxml.pc: $(o)/sherlock/xml/libshxml.pc
--- /dev/null
+/*
+ * Sherlock Library -- A simple XML parser
+ *
+ * (c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
+ */
+
+#define LOCAL_DEBUG
+
+#include "lib/lib.h"
+#include "lib/mempool.h"
+#include "lib/fastbuf.h"
+#include "lib/ff-unicode.h"
+#include "lib/ff-binary.h"
+#include "lib/chartype.h"
+#include "lib/unicode.h"
+#include "lib/hashfunc.h"
+#include "lib/stkstring.h"
+#include "lib/unaligned.h"
+#include "charset/charconv.h"
+#include "charset/fb-charconv.h"
+#include "sherlock/xml/xml.h"
+#include "sherlock/xml/dtd.h"
+#include "sherlock/xml/common.h"
+
+#include <setjmp.h>
+
+/*** Error handling ***/
+
+void NONRET
+xml_throw(struct xml_context *ctx)
+{
+ ASSERT(ctx->err_code && ctx->throw_buf);
+ longjmp(*(jmp_buf *)ctx->throw_buf, ctx->err_code);
+}
+
+void
+xml_warn(struct xml_context *ctx, const char *format, ...)
+{
+ if (ctx->h_warn)
+ {
+ va_list args;
+ va_start(args, format);
+ ctx->err_msg = stk_vprintf(format, args);
+ ctx->err_code = XML_ERR_WARN;
+ va_end(args);
+ ctx->h_warn(ctx);
+ ctx->err_msg = NULL;
+ ctx->err_code = XML_ERR_OK;
+ }
+}
+
+void
+xml_error(struct xml_context *ctx, const char *format, ...)
+{
+ if (ctx->h_error)
+ {
+ va_list args;
+ va_start(args, format);
+ ctx->err_msg = stk_vprintf(format, args);
+ ctx->err_code = XML_ERR_ERROR;
+ va_end(args);
+ ctx->h_error(ctx);
+ ctx->err_msg = NULL;
+ ctx->err_code = XML_ERR_OK;
+ }
+}
+
+void NONRET
+xml_fatal(struct xml_context *ctx, const char *format, ...)
+{
+ va_list args;
+ va_start(args, format);
+ ctx->err_msg = mp_vprintf(ctx->stack, format, args);
+ ctx->err_code = XML_ERR_FATAL;
+ ctx->state = XML_STATE_FATAL;
+ va_end(args);
+ if (ctx->h_fatal)
+ ctx->h_fatal(ctx);
+ xml_throw(ctx);
+}
+
+/*** Charecter categorization ***/
+
+#include "obj/sherlock/xml/unicat.c"
+
+/*** Memory management ***/
+
+void NONRET
+xml_fatal_nested(struct xml_context *ctx)
+{
+ xml_fatal(ctx, "Entity not nested correctly");
+}
+
+void *
+xml_hash_new(struct mempool *pool, uns size)
+{
+ void *tab = mp_alloc_zero(pool, size + XML_HASH_HDR_SIZE);
+ *(void **)tab = pool;
+ return tab + XML_HASH_HDR_SIZE;
+}
+
+/*** Reading of document/external entities ***/
+
+static void NONRET
+xml_eof(struct xml_context *ctx)
+{
+ ctx->err_msg = "Unexpected EOF";
+ ctx->err_code = XML_ERR_EOF;
+ xml_throw(ctx);
+}
+
+static inline void
+xml_add_char(u32 **bstop, uns c)
+{
+ *(*bstop)++ = c;
+ *(*bstop)++ = xml_char_cat(c);
+}
+
+struct xml_source *
+xml_push_source(struct xml_context *ctx, uns flags)
+{
+ xml_push(ctx);
+ struct xml_source *src = ctx->src;
+ if (src)
+ {
+ src->bptr = ctx->bptr;
+ src->bstop = ctx->bstop;
+ }
+ src = mp_alloc_zero(ctx->stack, sizeof(*src));
+ src->next = ctx->src;
+ src->saved_depth = ctx->depth;
+ ctx->src = src;
+ ctx->flags = (ctx->flags & ~(XML_FLAG_SRC_EOF | XML_FLAG_SRC_EXPECTED_DECL | XML_FLAG_SRC_NEW_LINE | XML_FLAG_SRC_SURROUND | XML_FLAG_SRC_DOCUMENT)) | flags;
+ ctx->bstop = ctx->bptr = src->buf;
+ ctx->depth = 0;
+ if (flags & XML_FLAG_SRC_SURROUND)
+ xml_add_char(&ctx->bstop, 0x20);
+ return src;
+}
+
+static void
+xml_pop_source(struct xml_context *ctx)
+{
+ TRACE(ctx, "pop_source");
+ if (unlikely(ctx->depth != 0))
+ xml_fatal_nested(ctx);
+ struct xml_source *src = ctx->src;
+ ASSERT(src);
+ bclose(src->fb);
+ ctx->depth = src->saved_depth;
+ ctx->src = src = src->next;
+ if (src)
+ {
+ ctx->bptr = src->bptr;
+ ctx->bstop = src->bstop;
+ }
+ xml_pop(ctx);
+ if (unlikely(!src))
+ xml_eof(ctx);
+}
+
+static void xml_refill_utf8(struct xml_context *ctx);
+
+void
+xml_push_entity(struct xml_context *ctx, struct xml_dtd_ent *ent)
+{
+ TRACE(ctx, "xml_push_entity");
+ uns cat1 = ctx->src->refill_cat1;
+ uns cat2 = ctx->src->refill_cat2;
+ struct xml_source *src = xml_push_source(ctx, 0);
+ src->refill_cat1 = cat1;
+ src->refill_cat2 = cat2;
+ if (ent->flags & XML_DTD_ENT_EXTERNAL)
+ xml_fatal(ctx, "External entities not implemented"); // FIXME
+ else
+ {
+ fbbuf_init_read(src->fb = &src->wrap_fb, ent->text, ent->len, 0);
+ src->refill = xml_refill_utf8;
+ }
+}
+
+void
+xml_set_source(struct xml_context *ctx, struct fastbuf *fb)
+{
+ TRACE(ctx, "xml_set_source");
+ ASSERT(!ctx->src);
+ struct xml_source *src = xml_push_source(ctx, XML_FLAG_SRC_DOCUMENT | XML_FLAG_SRC_EXPECTED_DECL);
+ src->fb = fb;
+}
+
+static uns
+xml_error_restricted(struct xml_context *ctx, uns c)
+{
+ if (c == ~1U)
+ xml_error(ctx, "Corrupted encoding");
+ else
+ xml_error(ctx, "Restricted char U+%04X", c);
+ return UNI_REPLACEMENT;
+}
+
+void xml_parse_decl(struct xml_context *ctx);
+
+#define REFILL(ctx, func, params...) \
+ struct xml_source *src = ctx->src; \
+ struct fastbuf *fb = src->fb; \
+ if (ctx->bptr == ctx->bstop) \
+ ctx->bptr = ctx->bstop = src->buf; \
+ uns f = ctx->flags, c, t1 = src->refill_cat1, t2 = src->refill_cat2, row = src->row; \
+ u32 *bend = src->buf + ARRAY_SIZE(src->buf), *bstop = ctx->bstop, \
+ *last_0xd = (f & XML_FLAG_SRC_NEW_LINE) ? bstop : bend; \
+ do \
+ { \
+ c = func(fb, ##params); \
+ uns t = xml_char_cat(c); \
+ if (t & t1) \
+ /* Typical branch */ \
+ *bstop++ = c, *bstop++ = t; \
+ else if (t & t2) \
+ { \
+ /* New line */ \
+ /* XML 1.0: 0xA | 0xD | 0xD 0xA */ \
+ /* XML 1.1: 0xA | 0xD | 0xD 0xA | 0x85 | 0xD 0x85 | 0x2028 */ \
+ if (c == 0xd) \
+ last_0xd = bstop + 2; \
+ else if (c != 0x2028 && last_0xd == bstop) \
+ { \
+ last_0xd = bend; \
+ continue; \
+ } \
+ xml_add_char(&bstop, 0xa), row++; \
+ } \
+ else if (c == '>') \
+ { \
+ /* Used only in XML/TextDecl to switch the encoding */ \
+ *bstop++ = c, *bstop++ = t; \
+ break; \
+ } \
+ else if (~c) \
+ /* Restricted character */ \
+ xml_add_char(&bstop, xml_error_restricted(ctx, c)); \
+ else \
+ { \
+ /* EOF */ \
+ if (f & XML_FLAG_SRC_SURROUND) \
+ xml_add_char(&bstop, 0x20); \
+ f |= XML_FLAG_SRC_EOF; \
+ break; \
+ } \
+ } \
+ while (bstop < bend); \
+ ctx->flags = (last_0xd == bstop) ? f | XML_FLAG_SRC_NEW_LINE : f & ~XML_FLAG_SRC_NEW_LINE; \
+ ctx->bstop = bstop; \
+ src->row = row;
+
+static void
+xml_refill_utf8(struct xml_context *ctx)
+{
+ REFILL(ctx, bget_utf8_repl, ~1U);
+}
+
+static void
+xml_refill_utf16_le(struct xml_context *ctx)
+{
+ REFILL(ctx, bget_utf16_le_repl, ~1U);
+}
+
+static void
+xml_refill_utf16_be(struct xml_context *ctx)
+{
+ REFILL(ctx, bget_utf16_be_repl, ~1U);
+}
+
+#if 0
+static inline uns
+xml_refill_libcharset_bget(struct fastbuf *fb, unsigned short int *in_to_x)
+{
+ // FIXME: slow
+ int c;
+ return (unlikely(c = bgetc(fb) < 0)) ? c : (int)conv_x_to_ucs(in_to_x[c]);
+}
+
+static void
+xml_refill_libcharset(struct xml_context *ctx)
+{
+ unsigned short int *in_to_x = ctx->src->refill_in_to_x;
+ REFILL(ctx, xml_refill_libcharset_bget, in_to_x);
+}
+#endif
+
+#undef REFILL
+
+void
+xml_refill(struct xml_context *ctx)
+{
+ do
+ {
+ if (ctx->flags & XML_FLAG_SRC_EOF)
+ xml_pop_source(ctx);
+ else if (ctx->flags & XML_FLAG_SRC_EXPECTED_DECL)
+ xml_parse_decl(ctx);
+ else
+ {
+ ctx->src->refill(ctx);
+ TRACE(ctx, "refilled %u characters", (uns)((ctx->bstop - ctx->bptr) / 2));
+ }
+ }
+ while (ctx->bptr == ctx->bstop);
+}
+
+uns
+xml_row(struct xml_context *ctx)
+{
+ struct xml_source *src = ctx->src;
+ if (!src)
+ return 0;
+ uns row = src->row;
+ for (u32 *p = ctx->bstop; p != ctx->bptr; p -= 2)
+ if (p[-1] & src->refill_cat2)
+ row--;
+ return row + 1;
+}
+
+/*** Basic parsing ***/
+
+void NONRET
+xml_fatal_expected(struct xml_context *ctx, uns c)
+{
+ xml_fatal(ctx, "Expected '%c'", c);
+}
+
+void NONRET
+xml_fatal_expected_white(struct xml_context *ctx)
+{
+ xml_fatal(ctx, "Expected a white space");
+}
+
+void NONRET
+xml_fatal_expected_quot(struct xml_context *ctx)
+{
+ xml_fatal(ctx, "Expected a quotation mark");
+}
+
+void
+xml_parse_eq(struct xml_context *ctx)
+{
+ /* Eq ::= S? '=' S? */
+ xml_parse_white(ctx, 0);
+ xml_parse_char(ctx, '=');
+ xml_parse_white(ctx, 0);
+}
+
+/* Names and nmtokens */
+
+static char *
+xml_parse_string(struct xml_context *ctx, struct mempool *pool, uns first_cat, uns next_cat, char *err)
+{
+ char *p = mp_start_noalign(pool, 1);
+ if (unlikely(!(xml_peek_cat(ctx) & first_cat)))
+ xml_fatal(ctx, "%s", err);
+ do
+ {
+ p = mp_spread(pool, p, 5);
+ p = utf8_32_put(p, xml_skip_char(ctx));
+ }
+ while (xml_peek_cat(ctx) & next_cat);
+ *p++ = 0;
+ return mp_end(pool, p);
+}
+
+static void
+xml_skip_string(struct xml_context *ctx, uns first_cat, uns next_cat, char *err)
+{
+ if (unlikely(!(xml_get_cat(ctx) & first_cat)))
+ xml_fatal(ctx, "%s", err);
+ while (xml_peek_cat(ctx) & next_cat)
+ xml_skip_char(ctx);
+}
+
+char *
+xml_parse_name(struct xml_context *ctx, struct mempool *pool)
+{
+ /* Name ::= NameStartChar (NameChar)* */
+ return xml_parse_string(ctx, pool,
+ !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_SNAME_1_0 : XML_CHAR_SNAME_1_1,
+ !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1,
+ "Expected a name");
+}
+
+void
+xml_skip_name(struct xml_context *ctx)
+{
+ xml_skip_string(ctx,
+ !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_SNAME_1_0 : XML_CHAR_SNAME_1_1,
+ !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1,
+ "Expected a name");
+}
+
+char *
+xml_parse_nmtoken(struct xml_context *ctx, struct mempool *pool)
+{
+ /* Nmtoken ::= (NameChar)+ */
+ uns cat = !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1;
+ return xml_parse_string(ctx, pool, cat, cat, "Expected a nmtoken");
+}
+
+/* Simple literals */
+
+char *
+xml_parse_system_literal(struct xml_context *ctx, struct mempool *pool)
+{
+ /* SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") */
+ char *p = mp_start_noalign(pool, 1);
+ uns q = xml_parse_quote(ctx), c;
+ while ((c = xml_get_char(ctx)) != q)
+ {
+ p = mp_spread(pool, p, 5);
+ p = utf8_32_put(p, c);
+ }
+ *p++ = 0;
+ return mp_end(pool, p);
+}
+
+char *
+xml_parse_pubid_literal(struct xml_context *ctx, struct mempool *pool)
+{
+ /* PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'" */
+ char *p = mp_start_noalign(pool, 1);
+ uns q = xml_parse_quote(ctx), c;
+ while ((c = xml_get_char(ctx)) != q)
+ {
+ if (unlikely(!(xml_last_cat(ctx) & XML_CHAR_PUBID)))
+ xml_fatal(ctx, "Expected a pubid character");
+ p = mp_spread(pool, p, 2);
+ *p++ = c;
+ }
+ *p++ = 0;
+ return mp_end(pool, p);
+}
+
+static char *
+xml_parse_encoding_name(struct xml_context *ctx)
+{
+ /* EncName ::= '"' [A-Za-z] ([A-Za-z0-9._] | '-')* '"' | "'" [A-Za-z] ([A-Za-z0-9._] | '-')* "'" */
+ char *p = mp_start_noalign(ctx->pool, 1);
+ uns q = xml_parse_quote(ctx);
+ if (unlikely(!(xml_get_cat(ctx) & XML_CHAR_ENC_SNAME)))
+ xml_fatal(ctx, "Invalid character in the encoding name");
+ while (1)
+ {
+ p = mp_spread(ctx->pool, p, 2);
+ *p++ = xml_last_char(ctx);
+ if (xml_get_char(ctx) == q)
+ break;
+ if (unlikely(!(xml_last_cat(ctx) & XML_CHAR_ENC_NAME)))
+ xml_fatal(ctx, "Invalid character in the encoding name");
+ }
+ *p++ = 0;
+ return mp_end(ctx->pool, p);
+}
+
+/* Document/external entity header */
+
+static inline void
+xml_init_cats(struct xml_context *ctx, uns mask)
+{
+ if (!(ctx->flags & XML_FLAG_VERSION_1_1))
+ {
+ ctx->src->refill_cat1 = XML_CHAR_VALID_1_0 & ~XML_CHAR_NEW_LINE_1_0 & ~mask;
+ ctx->src->refill_cat2 = XML_CHAR_NEW_LINE_1_0;
+ }
+ else
+ {
+ ctx->src->refill_cat1 = XML_CHAR_UNRESTRICTED_1_1 & ~XML_CHAR_NEW_LINE_1_1 & ~mask;
+ ctx->src->refill_cat2 = XML_CHAR_NEW_LINE_1_1;
+ }
+}
+
+static void
+xml_init_charconv(struct xml_context *ctx, int cs)
+{
+ // FIXME: hack
+ struct xml_source *src = ctx->src;
+ TRACE(ctx, "wrapping charset %s", charset_name(cs));
+#if 0
+ struct conv_context conv;
+ conv_set_charset(&conv, cs, CONV_CHARSET_UTF8);
+ src->refill = xml_refill_libcharset;
+ src->refill_in_to_x = conv.in_to_x;
+#else
+ src->fb = fb_wrap_charconv_in(src->fb, cs, CONV_CHARSET_UTF8);
+ // FIXME: memory leak
+#endif
+}
+
+void
+xml_parse_decl(struct xml_context *ctx)
+{
+ TRACE(ctx, "xml_parse_decl");
+ struct xml_source *src = ctx->src;
+ ctx->flags &= ~XML_FLAG_SRC_EXPECTED_DECL;
+
+ /* Setup valid Unicode ranges and force the reader to abort refill() after each '>', where we can switch encoding or XML version */
+ xml_init_cats(ctx, XML_CHAR_GT);
+
+ /* Initialize the supplied charset (if any) or try to guess it */
+ char *expected_encoding = src->expected_encoding ? : src->fb_encoding;
+ src->refill = xml_refill_utf8;
+ int bom = bpeekc(src->fb);
+ if (bom < 0)
+ ctx->flags |= XML_FLAG_SRC_EOF;
+ if (!src->fb_encoding)
+ {
+ if (bom == 0xfe)
+ src->refill = xml_refill_utf16_be;
+ else if (bom == 0xff)
+ src->refill = xml_refill_utf16_le;
+ }
+ else
+ {
+ int cs = find_charset_by_name(src->fb_encoding);
+ if (cs == CONV_CHARSET_UTF8)
+ {}
+ else if (cs >= 0)
+ {
+ xml_init_charconv(ctx, cs);
+ bom = 0;
+ }
+ else if (strcasecmp(src->fb_encoding, "UTF-16"))
+ {
+ src->refill = xml_refill_utf16_be;
+ if (bom == 0xff)
+ src->refill = xml_refill_utf16_le;
+ if (!src->expected_encoding)
+ expected_encoding = (bom == 0xff) ? "UTF-16LE" : "UTF-16BE";
+ }
+ else if (strcasecmp(src->fb_encoding, "UTF-16BE"))
+ src->refill = xml_refill_utf16_be;
+ else if (strcasecmp(src->fb_encoding, "UTF-16LE"))
+ src->refill = xml_refill_utf16_le;
+ else
+ {
+ xml_error(ctx, "Unknown encoding '%s'", src->fb_encoding);
+ expected_encoding = NULL;
+ }
+ }
+ uns utf16 = src->refill == xml_refill_utf16_le || src->refill == xml_refill_utf16_be;
+ if (bom > 0 && xml_peek_char(ctx) == 0xfeff)
+ xml_skip_char(ctx);
+ else if (utf16)
+ xml_error(ctx, "Missing or corrupted BOM");
+
+ /* Look ahead for presence of XMLDecl or optional TextDecl */
+ if (!(ctx->flags & XML_FLAG_SRC_EOF) && ctx->bstop != src->buf + ARRAY_SIZE(src->buf))
+ xml_refill(ctx);
+ uns doc = ctx->flags & XML_FLAG_SRC_DOCUMENT;
+ u32 *bptr = ctx->bptr;
+ uns have_decl = (12 <= ctx->bstop - ctx->bptr && (bptr[11] & XML_CHAR_WHITE) &&
+ bptr[0] == '<' && bptr[2] == '?' && (bptr[4] & 0xdf) == 'X' && (bptr[6] & 0xdf) == 'M' && (bptr[8] & 0xdf) == 'L');
+ if (!have_decl)
+ {
+ if (doc)
+ xml_fatal(ctx, "Missing or corrupted XML header");
+ else if (expected_encoding && strcasecmp(src->expected_encoding, "UTF-8") && !utf16)
+ xml_error(ctx, "Missing or corrupted entity header");
+ goto exit;
+ }
+ ctx->bptr = bptr + 12;
+ xml_parse_white(ctx, 0);
+
+ /* Parse version string (mandatory in XMLDecl, optional in TextDecl) */
+ if (xml_peek_char(ctx) == 'v')
+ {
+ xml_parse_seq(ctx, "version");
+ xml_parse_eq(ctx);
+ char *version = xml_parse_pubid_literal(ctx, ctx->pool);
+ TRACE(ctx, "version=%s", version);
+ uns v = 0;
+ if (!strcmp(version, "1.1"))
+ v = XML_FLAG_VERSION_1_1;
+ else if (strcmp(version, "1.0"))
+ {
+ xml_error(ctx, "Unknown XML version string '%s'", version);
+ version = "1.0";
+ }
+ if (doc)
+ {
+ ctx->version_str = version;
+ ctx->flags |= v;
+ }
+ else if (v > (ctx->flags & XML_FLAG_VERSION_1_1))
+ xml_error(ctx, "XML 1.1 external entity included from XML 1.0 document");
+ if (!xml_parse_white(ctx, !doc))
+ goto end;
+ }
+ else if (doc)
+ {
+ xml_error(ctx, "Expected XML version");
+ ctx->version_str = "1.0";
+ }
+
+ /* Parse encoding string (optional in XMLDecl, mandatory in TextDecl) */
+ if (xml_peek_char(ctx) == 'e')
+ {
+ xml_parse_seq(ctx, "encoding");
+ xml_parse_eq(ctx);
+ src->decl_encoding = xml_parse_encoding_name(ctx);
+ TRACE(ctx, "encoding=%s", src->decl_encoding);
+ if (!xml_parse_white(ctx, 0))
+ goto end;
+ }
+ else if (!doc)
+ xml_error(ctx, "Expected XML encoding");
+
+ /* Parse whether the document is standalone (optional in XMLDecl) */
+ if (doc && xml_peek_char(ctx) == 's')
+ {
+ xml_parse_seq(ctx, "standalone");
+ xml_parse_eq(ctx);
+ uns c = xml_parse_quote(ctx);
+ if (ctx->standalone = (xml_peek_char(ctx) == 'y'))
+ xml_parse_seq(ctx, "yes");
+ else
+ xml_parse_seq(ctx, "no");
+ xml_parse_char(ctx, c);
+ TRACE(ctx, "standalone=%d", ctx->standalone);
+ xml_parse_white(ctx, 0);
+ }
+end:
+ xml_parse_seq(ctx, "?>");
+
+ /* Switch to the final encoding */
+ if (src->decl_encoding)
+ {
+ int cs = find_charset_by_name(src->decl_encoding);
+ if (cs < 0 && !expected_encoding)
+ xml_error(ctx, "Unknown encoding '%s'", src->decl_encoding);
+ else if (!src->fb_encoding && cs >= 0 && cs != CONV_CHARSET_UTF8)
+ xml_init_charconv(ctx, cs);
+ else if (expected_encoding && strcasecmp(src->decl_encoding, expected_encoding) && (!utf16 ||
+ !(!strcasecmp(src->decl_encoding, "UTF-16") ||
+ (!strcasecmp(src->decl_encoding, "UTF-16BE") && strcasecmp(expected_encoding, "UTF-16LE")) ||
+ (!strcasecmp(src->decl_encoding, "UTF-16LE") && strcasecmp(expected_encoding, "UTF-16BE")))))
+ xml_error(ctx, "The header contains encoding '%s' instead of expected '%s'", src->decl_encoding, expected_encoding);
+ }
+
+exit:
+ /* Update valid Unicode ranges */
+ xml_init_cats(ctx, 0);
+}
--- /dev/null
+/*
+ * Sherlock Library -- A simple XML parser
+ *
+ * (c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
+ */
+
+#ifndef _SHERLOCK_XML_COMMON_H
+#define _SHERLOCK_XML_COMMON_H
+
+#include "sherlock/xml/xml.h"
+#include "sherlock/xml/dtd.h"
+
+/*** Debugging ***/
+
+#ifdef LOCAL_DEBUG
+#define TRACE(c, f, p...) do { DBG("XML %u: " f, xml_row(c), ##p); } while(0)
+#else
+#define TRACE(c, f, p...) do {} while(0)
+#endif
+
+/*** Error handling ***/
+
+void NONRET xml_throw(struct xml_context *ctx);
+void xml_warn(struct xml_context *ctx, const char *format, ...);
+void xml_error(struct xml_context *ctx, const char *format, ...);
+void xml_fatal(struct xml_context *ctx, const char *format, ...);
+
+/*** Charecter categorization ***/
+
+#include "obj/sherlock/xml/unicat.h"
+
+static inline uns
+xml_char_cat(uns c)
+{
+ if (c < 0x10000)
+ return 1U << xml_char_tab1[(c & 0xff) + xml_char_tab2[c >> 8]];
+ else if (likely(c < 0x110000))
+ return 1U << xml_char_tab3[c >> 16];
+ else
+ return 1;
+}
+
+static inline uns
+xml_ascii_cat(uns c)
+{
+ return xml_char_tab1[c];
+}
+
+/*** Memory management ***/
+
+void NONRET xml_fatal_nested(struct xml_context *ctx);
+
+static inline void
+xml_inc(struct xml_context *ctx)
+{
+ /* Called after the first character of a block */
+ TRACE(ctx, "inc");
+ ctx->depth++;
+}
+
+static inline void
+xml_dec(struct xml_context *ctx)
+{
+ /* Called after the last character of a block */
+ TRACE(ctx, "dec");
+ if (unlikely(!ctx->depth--))
+ xml_fatal_nested(ctx);
+}
+
+struct xml_stack {
+ struct xml_stack *next;
+ struct mempool_state state;
+ uns flags;
+};
+
+static inline void *
+xml_do_push(struct xml_context *ctx, uns size)
+{
+ /* Saves ctx->stack and ctx->flags state */
+ struct mempool_state state;
+ mp_save(ctx->stack, &state);
+ struct xml_stack *s = mp_alloc(ctx->stack, size);
+ s->state = state;
+ s->flags = ctx->flags;
+ s->next = ctx->stack_list;
+ ctx->stack_list = s;
+ return s;
+}
+
+static inline void
+xml_do_pop(struct xml_context *ctx, struct xml_stack *s)
+{
+ /* Restore ctx->stack and ctx->flags state */
+ ctx->stack_list = s->next;
+ ctx->flags = s->flags;
+ mp_restore(ctx->stack, &s->state);
+}
+
+static inline void
+xml_push(struct xml_context *ctx)
+{
+ TRACE(ctx, "push");
+ xml_do_push(ctx, sizeof(struct xml_stack));
+}
+
+static inline void
+xml_pop(struct xml_context *ctx)
+{
+ TRACE(ctx, "pop");
+ ASSERT(ctx->stack_list);
+ xml_do_pop(ctx, ctx->stack_list);
+}
+
+struct xml_dom_stack {
+ struct xml_stack stack;
+ struct mempool_state state;
+};
+
+static inline struct xml_node *
+xml_push_dom(struct xml_context *ctx)
+{
+ /* Create a new DOM node */
+ TRACE(ctx, "push_dom");
+ struct xml_dom_stack *s = xml_do_push(ctx, sizeof(*s));
+ mp_save(ctx->pool, &s->state);
+ struct xml_node *n = mp_alloc(ctx->pool, sizeof(*n));
+ if (n->parent = ctx->node)
+ clist_add_tail(&n->parent->sons, &n->n);
+ return ctx->node = n;
+}
+
+static inline void
+xml_pop_dom(struct xml_context *ctx)
+{
+ /* Leave DOM subtree */
+ TRACE(ctx, "pop_dom");
+ ASSERT(ctx->node);
+ struct xml_node *p = ctx->node->parent;
+ struct xml_dom_stack *s = (void *)ctx->stack_list;
+ if (ctx->flags & XML_DOM_FREE)
+ {
+ /* See xml_pop_element() for cleanup of attribute hash table */
+ if (p)
+ clist_remove(&ctx->node->n);
+ mp_restore(ctx->pool, &s->state);
+ }
+ ctx->node = p;
+ xml_do_pop(ctx, &s->stack);
+}
+
+#define XML_HASH_HDR_SIZE ALIGN_TO(sizeof(void *), CPU_STRUCT_ALIGN)
+#define XML_HASH_GIVE_ALLOC struct HASH_PREFIX(table); \
+ static inline void *HASH_PREFIX(alloc)(struct HASH_PREFIX(table) *t, uns size) \
+ { return mp_alloc(*(void **)((void *)t - XML_HASH_HDR_SIZE), size); } \
+ static inline void HASH_PREFIX(free)(struct HASH_PREFIX(table) *t UNUSED, void *p UNUSED) {}
+
+void *xml_hash_new(struct mempool *pool, uns size);
+
+static inline void
+xml_start_chars(struct xml_context *ctx)
+{
+ struct fastbuf *fb = &ctx->chars;
+ fb->bstop = fb->bptr = fb->buffer = mp_start_noalign(ctx->pool, 1);
+ fb->bufend = fb->buffer + mp_avail(ctx->pool);
+}
+
+static inline char *
+xml_end_chars(struct xml_context *ctx, uns *len)
+{
+ struct fastbuf *fb = &ctx->chars;
+ uns l = fb->bufend - fb->buffer;
+ if (fb->bptr == fb->bufend)
+ fb->bptr = mp_expand(ctx->pool) + l;
+ *fb->bptr = 0;
+ char *c = mp_end(ctx->pool, fb->bptr + 1);
+ fb->bptr = fb->bstop = fb->buffer = fb->bufend = NULL;
+ *len = l;
+ return c;
+}
+
+/*** Reading of document/external entities ***/
+
+struct xml_source *xml_push_source(struct xml_context *ctx, uns flags);
+void xml_push_entity(struct xml_context *ctx, struct xml_dtd_ent *ent);
+
+void xml_refill(struct xml_context *ctx);
+
+static inline uns
+xml_peek_char(struct xml_context *ctx)
+{
+ if (ctx->bptr == ctx->bstop)
+ xml_refill(ctx);
+ return ctx->bptr[0];
+}
+
+static inline uns
+xml_peek_cat(struct xml_context *ctx)
+{
+ if (ctx->bptr == ctx->bstop)
+ xml_refill(ctx);
+ return ctx->bptr[1];
+}
+
+static inline uns
+xml_get_char(struct xml_context *ctx)
+{
+ uns c = xml_peek_char(ctx);
+ ctx->bptr += 2;
+ return c;
+}
+
+static inline uns
+xml_get_cat(struct xml_context *ctx)
+{
+ uns c = xml_peek_cat(ctx);
+ ctx->bptr += 2;
+ return c;
+}
+
+static inline uns
+xml_last_char(struct xml_context *ctx)
+{
+ return ctx->bptr[-2];
+}
+
+static inline uns
+xml_last_cat(struct xml_context *ctx)
+{
+ return ctx->bptr[-1];
+}
+
+static inline uns
+xml_skip_char(struct xml_context *ctx)
+{
+ uns c = ctx->bptr[0];
+ ctx->bptr += 2;
+ return c;
+}
+
+static inline uns
+xml_unget_char(struct xml_context *ctx)
+{
+ return *(ctx->bptr -= 2);
+}
+
+/*** Basic parsing ***/
+
+void NONRET xml_fatal_expected(struct xml_context *ctx, uns c);
+void NONRET xml_fatal_expected_white(struct xml_context *ctx);
+void NONRET xml_fatal_expected_quot(struct xml_context *ctx);
+
+static inline uns
+xml_parse_white(struct xml_context *ctx, uns mandatory)
+{
+ /* mandatory=1 -> S ::= (#x20 | #x9 | #xD | #xA)+
+ * mandatory=0 -> S? */
+ uns cnt = 0;
+ while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
+ {
+ xml_skip_char(ctx);
+ cnt++;
+ }
+ if (unlikely(mandatory && !cnt))
+ xml_fatal_expected_white(ctx);
+ return cnt;
+}
+
+static inline void
+xml_parse_char(struct xml_context *ctx, uns c)
+{
+ /* Consumes a given Unicode character */
+ if (unlikely(c != xml_get_char(ctx)))
+ xml_fatal_expected(ctx, c);
+}
+
+static inline void
+xml_parse_seq(struct xml_context *ctx, const char *seq)
+{
+ /* Consumes a given sequence of ASCII characters */
+ while (*seq)
+ xml_parse_char(ctx, *seq++);
+}
+
+void xml_parse_eq(struct xml_context *ctx);
+
+static inline uns
+xml_parse_quote(struct xml_context *ctx)
+{
+ /* "'" | '"' */
+ uns c = xml_get_char(ctx);
+ if (unlikely(c != '\'' && c != '\"'))
+ xml_fatal_expected_quot(ctx);
+ return c;
+}
+
+/* Names and nmtokens */
+
+char *xml_parse_name(struct xml_context *ctx, struct mempool *pool);
+void xml_skip_name(struct xml_context *ctx);
+char *xml_parse_nmtoken(struct xml_context *ctx, struct mempool *pool);
+
+/* Simple literals */
+
+char *xml_parse_system_literal(struct xml_context *ctx, struct mempool *pool);
+char *xml_parse_pubid_literal(struct xml_context *ctx, struct mempool *pool);
+
+/* Parsing */
+
+uns xml_parse_char_ref(struct xml_context *ctx);
+void xml_parse_ref(struct xml_context *ctx);
+void xml_parse_pe_ref(struct xml_context *ctx);
+char *xml_parse_attr_value(struct xml_context *ctx, struct xml_dtd_attr *attr);
+void xml_parse_notation_decl(struct xml_context *ctx);
+void xml_parse_entity_decl(struct xml_context *ctx);
+void xml_parse_element_decl(struct xml_context *ctx);
+void xml_parse_attr_list_decl(struct xml_context *ctx);
+void xml_push_comment(struct xml_context *ctx);
+void xml_pop_comment(struct xml_context *ctx);
+void xml_skip_comment(struct xml_context *ctx);
+void xml_push_pi(struct xml_context *ctx);
+void xml_pop_pi(struct xml_context *ctx);
+void xml_skip_pi(struct xml_context *ctx);
+
+#endif
--- /dev/null
+/*
+ * Sherlock Library -- A simple XML parser
+ *
+ * (c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
+ */
+
+#define LOCAL_DEBUG
+
+#include "sherlock/sherlock.h"
+#include "sherlock/xml/xml.h"
+#include "sherlock/xml/dtd.h"
+#include "sherlock/xml/common.h"
+#include "lib/fastbuf.h"
+#include "lib/ff-unicode.h"
+
+/* Notations */
+
+#define HASH_PREFIX(x) xml_dtd_notns_##x
+#define HASH_NODE struct xml_dtd_notn
+#define HASH_KEY_STRING name
+#define HASH_ZERO_FILL
+#define HASH_TABLE_DYNAMIC
+#define HASH_WANT_FIND
+#define HASH_WANT_LOOKUP
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* General entities */
+
+#define HASH_PREFIX(x) xml_dtd_ents_##x
+#define HASH_NODE struct xml_dtd_ent
+#define HASH_KEY_STRING name
+#define HASH_ZERO_FILL
+#define HASH_TABLE_DYNAMIC
+#define HASH_WANT_FIND
+#define HASH_WANT_LOOKUP
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+static struct xml_dtd_ent *
+xml_dtd_declare_trivial_gent(struct xml_context *ctx, char *name, char *text)
+{
+ struct xml_dtd *dtd = ctx->dtd;
+ struct xml_dtd_ent *ent = xml_dtd_ents_lookup(dtd->tab_gents, name);
+ if (ent->flags & XML_DTD_ENT_DECLARED)
+ {
+ xml_warn(ctx, "Entity &%s; already declared", name);
+ return NULL;
+ }
+ slist_add_tail(&dtd->gents, &ent->n);
+ ent->flags = XML_DTD_ENT_DECLARED | XML_DTD_ENT_TRIVIAL;
+ ent->text = text;
+ ent->len = strlen(text);
+ return ent;
+}
+
+static void
+xml_dtd_declare_default_gents(struct xml_context *ctx)
+{
+ xml_dtd_declare_trivial_gent(ctx, "lt", "<");
+ xml_dtd_declare_trivial_gent(ctx, "gt", ">");
+ xml_dtd_declare_trivial_gent(ctx, "amp", "&");
+ xml_dtd_declare_trivial_gent(ctx, "apos", "'");
+ xml_dtd_declare_trivial_gent(ctx, "quot", "\"");
+}
+
+struct xml_dtd_ent *
+xml_dtd_find_gent(struct xml_context *ctx, char *name)
+{
+ struct xml_dtd *dtd = ctx->dtd;
+ if (dtd)
+ {
+ struct xml_dtd_ent *ent = xml_dtd_ents_find(dtd->tab_gents, name);
+ return !ent ? NULL : (ent->flags & XML_DTD_ENT_DECLARED) ? ent : NULL;
+ }
+ else
+ {
+#define ENT(n, t) ent_##n = { .name = #n, .text = t, .len = 1, .flags = XML_DTD_ENT_DECLARED | XML_DTD_ENT_TRIVIAL }
+ static struct xml_dtd_ent ENT(lt, "<"), ENT(gt, ">"), ENT(amp, "&"), ENT(apos, "'"), ENT(quot, "\"");
+#undef ENT
+ switch (name[0])
+ {
+ case 'l':
+ if (!strcmp(name, "lt"))
+ return &ent_lt;
+ break;
+ case 'g':
+ if (!strcmp(name, "gt"))
+ return &ent_gt;
+ break;
+ case 'a':
+ if (!strcmp(name, "amp"))
+ return &ent_amp;
+ if (!strcmp(name, "apos"))
+ return &ent_apos;
+ break;
+ case 'q':
+ if (!strcmp(name, "quot"))
+ return &ent_quot;
+ break;
+ }
+ return NULL;
+ }
+}
+
+/* Parameter entities */
+
+static struct xml_dtd_ent *
+xml_dtd_find_pent(struct xml_context *ctx, char *name)
+{
+ struct xml_dtd *dtd = ctx->dtd;
+ struct xml_dtd_ent *ent = xml_dtd_ents_find(dtd->tab_pents, name);
+ return !ent ? NULL : (ent->flags & XML_DTD_ENT_DECLARED) ? ent : NULL;
+}
+
+/* Elements */
+
+#define HASH_PREFIX(x) xml_dtd_elems_##x
+#define HASH_NODE struct xml_dtd_elem
+#define HASH_KEY_STRING name
+#define HASH_TABLE_DYNAMIC
+#define HASH_ZERO_FILL
+#define HASH_WANT_LOOKUP
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* Element sons */
+
+struct xml_dtd_enodes_table;
+
+static inline uns
+xml_dtd_enodes_hash(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem)
+{
+ return hash_pointer(parent) ^ hash_pointer(elem);
+}
+
+static inline int
+xml_dtd_enodes_eq(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *parent1, struct xml_dtd_elem *elem1, struct xml_dtd_elem_node *parent2, struct xml_dtd_elem *elem2)
+{
+ return (parent1 == parent2) && (elem1 == elem2);
+}
+
+static inline void
+xml_dtd_enodes_init_key(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *node, struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem)
+{
+ node->parent = parent;
+ node->elem = elem;
+}
+
+#define HASH_PREFIX(x) xml_dtd_enodes_##x
+#define HASH_NODE struct xml_dtd_elem_node
+#define HASH_KEY_COMPLEX(x) x parent, x elem
+#define HASH_KEY_DECL struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem
+#define HASH_GIVE_HASHFN
+#define HASH_GIVE_EQ
+#define HASH_GIVE_INIT_KEY
+#define HASH_TABLE_DYNAMIC
+#define HASH_ZERO_FILL
+#define HASH_WANT_FIND
+#define HASH_WANT_NEW
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* Element attributes */
+
+struct xml_dtd_attrs_table;
+
+static inline uns
+xml_dtd_attrs_hash(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_elem *elem, char *name)
+{
+ return hash_pointer(elem) ^ hash_string(name);
+}
+
+static inline int
+xml_dtd_attrs_eq(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_elem *elem1, char *name1, struct xml_dtd_elem *elem2, char *name2)
+{
+ return (elem1 == elem2) && !strcmp(name1, name2);
+}
+
+static inline void
+xml_dtd_attrs_init_key(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_attr *attr, struct xml_dtd_elem *elem, char *name)
+{
+ attr->elem = elem;
+ attr->name = name;
+}
+
+#define HASH_PREFIX(x) xml_dtd_attrs_##x
+#define HASH_NODE struct xml_dtd_attr
+#define HASH_ZERO_FILL
+#define HASH_TABLE_DYNAMIC
+#define HASH_KEY_COMPLEX(x) x elem, x name
+#define HASH_KEY_DECL struct xml_dtd_elem *elem, char *name
+#define HASH_GIVE_HASHFN
+#define HASH_GIVE_EQ
+#define HASH_GIVE_INIT_KEY
+#define HASH_WANT_FIND
+#define HASH_WANT_NEW
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* Enumerated attribute values */
+
+struct xml_dtd_evals_table;
+
+static inline uns
+xml_dtd_evals_hash(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_attr *attr, char *val)
+{
+ return hash_pointer(attr) ^ hash_string(val);
+}
+
+static inline int
+xml_dtd_evals_eq(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_attr *attr1, char *val1, struct xml_dtd_attr *attr2, char *val2)
+{
+ return (attr1 == attr2) && !strcmp(val1, val2);
+}
+
+static inline void
+xml_dtd_evals_init_key(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_eval *eval, struct xml_dtd_attr *attr, char *val)
+{
+ eval->attr = attr;
+ eval->val = val;
+}
+
+#define HASH_PREFIX(x) xml_dtd_evals_##x
+#define HASH_NODE struct xml_dtd_eval
+#define HASH_TABLE_DYNAMIC
+#define HASH_KEY_COMPLEX(x) x attr, x val
+#define HASH_KEY_DECL struct xml_dtd_attr *attr, char *val
+#define HASH_GIVE_HASHFN
+#define HASH_GIVE_EQ
+#define HASH_GIVE_INIT_KEY
+#define HASH_WANT_FIND
+#define HASH_WANT_NEW
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* Enumerated attribute notations */
+
+struct xml_dtd_enotns_table;
+
+static inline uns
+xml_dtd_enotns_hash(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_attr *attr, struct xml_dtd_notn *notn)
+{
+ return hash_pointer(attr) ^ hash_pointer(notn);
+}
+
+static inline int
+xml_dtd_enotns_eq(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_attr *attr1, struct xml_dtd_notn *notn1, struct xml_dtd_attr *attr2, struct xml_dtd_notn *notn2)
+{
+ return (attr1 == attr2) && (notn1 == notn2);
+}
+
+static inline void
+xml_dtd_enotns_init_key(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_enotn *enotn, struct xml_dtd_attr *attr, struct xml_dtd_notn *notn)
+{
+ enotn->attr = attr;
+ enotn->notn = notn;
+}
+
+#define HASH_PREFIX(x) xml_dtd_enotns_##x
+#define HASH_NODE struct xml_dtd_enotn
+#define HASH_TABLE_DYNAMIC
+#define HASH_KEY_COMPLEX(x) x attr, x notn
+#define HASH_KEY_DECL struct xml_dtd_attr *attr, struct xml_dtd_notn *notn
+#define HASH_GIVE_HASHFN
+#define HASH_GIVE_EQ
+#define HASH_GIVE_INIT_KEY
+#define HASH_WANT_FIND
+#define HASH_WANT_NEW
+#define HASH_GIVE_ALLOC
+#define HASH_TABLE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+/* DTD initialization/cleanup */
+
+void
+xml_dtd_init(struct xml_context *ctx)
+{
+ if (ctx->dtd)
+ return;
+ struct mempool *pool = mp_new(4096);
+ struct xml_dtd *dtd = ctx->dtd = mp_alloc_zero(pool, sizeof(*ctx->dtd));
+ dtd->pool = pool;
+ xml_dtd_ents_init(dtd->tab_gents = xml_hash_new(pool, sizeof(struct xml_dtd_ents_table)));
+ xml_dtd_ents_init(dtd->tab_pents = xml_hash_new(pool, sizeof(struct xml_dtd_ents_table)));
+ xml_dtd_notns_init(dtd->tab_notns = xml_hash_new(pool, sizeof(struct xml_dtd_notns_table)));
+ xml_dtd_elems_init(dtd->tab_elems = xml_hash_new(pool, sizeof(struct xml_dtd_elems_table)));
+ xml_dtd_enodes_init(dtd->tab_enodes = xml_hash_new(pool, sizeof(struct xml_dtd_enodes_table)));
+ xml_dtd_attrs_init(dtd->tab_attrs = xml_hash_new(pool, sizeof(struct xml_dtd_attrs_table)));
+ xml_dtd_evals_init(dtd->tab_evals = xml_hash_new(pool, sizeof(struct xml_dtd_evals_table)));
+ xml_dtd_enotns_init(dtd->tab_enotns = xml_hash_new(pool, sizeof(struct xml_dtd_enotns_table)));
+ xml_dtd_declare_default_gents(ctx);
+}
+
+void
+xml_dtd_cleanup(struct xml_context *ctx)
+{
+ if (!ctx->dtd)
+ return;
+ mp_delete(ctx->dtd->pool);
+ ctx->dtd = NULL;
+}
+
+void
+xml_dtd_finish(struct xml_context *ctx)
+{
+ if (!ctx->dtd)
+ return;
+ // FIXME: validity checks
+}
+
+/*** Parsing functions ***/
+
+/* References to parameter entities */
+
+void
+xml_parse_pe_ref(struct xml_context *ctx)
+{
+ /* PEReference ::= '%' Name ';'
+ * Already parsed: '%' */
+ struct mempool_state state;
+ mp_save(ctx->stack, &state);
+ char *name = xml_parse_name(ctx, ctx->stack);
+ xml_parse_char(ctx, ';');
+ struct xml_dtd_ent *ent = xml_dtd_find_pent(ctx, name);
+ if (!ent)
+ xml_error(ctx, "Unknown entity %%%s;", name);
+ else
+ {
+ TRACE(ctx, "Pushed entity %%%s;", name);
+ mp_restore(ctx->stack, &state);
+ xml_dec(ctx);
+ xml_push_entity(ctx, ent);
+ return;
+ }
+ mp_restore(ctx->stack, &state);
+ xml_dec(ctx);
+}
+
+static void
+xml_parse_dtd_pe(struct xml_context *ctx)
+{
+ do
+ {
+ xml_skip_char(ctx);
+ xml_inc(ctx);
+ while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
+ xml_skip_char(ctx);
+ xml_parse_pe_ref(ctx);
+ }
+ while (xml_peek_char(ctx) != '%');
+}
+
+static inline uns
+xml_parse_dtd_white(struct xml_context *ctx, uns mandatory)
+{
+ /* Whitespace or parameter entity */
+ uns cnt = 0;
+ while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
+ {
+ xml_skip_char(ctx);
+ cnt = 1;
+ }
+ if (xml_peek_char(ctx) == '%')
+ {
+ xml_parse_dtd_pe(ctx);
+ return 1;
+ }
+ else if (unlikely(mandatory && !cnt))
+ xml_fatal_expected_white(ctx);
+ return cnt;
+}
+
+static void
+xml_dtd_parse_external_id(struct xml_context *ctx, struct xml_ext_id *eid, uns allow_public)
+{
+ struct xml_dtd *dtd = ctx->dtd;
+ bzero(eid, sizeof(*eid));
+ uns c = xml_peek_char(ctx);
+ if (c == 'S')
+ {
+ xml_parse_seq(ctx, "SYSTEM");
+ xml_parse_dtd_white(ctx, 1);
+ eid->system_id = xml_parse_system_literal(ctx, dtd->pool);
+ }
+ else if (c == 'P')
+ {
+ xml_parse_seq(ctx, "PUBLIC");
+ xml_parse_dtd_white(ctx, 1);
+ eid->public_id = xml_parse_pubid_literal(ctx, dtd->pool);
+ if (xml_parse_dtd_white(ctx, 0)) // FIXME
+ if ((c = xml_peek_char(ctx)) == '\'' || c == '"' || !allow_public)
+ eid->system_id = xml_parse_system_literal(ctx, dtd->pool);
+ }
+ else
+ xml_fatal(ctx, "Expected an external ID");
+}
+
+/* DTD: <!NOTATION ...> */
+
+void
+xml_parse_notation_decl(struct xml_context *ctx)
+{
+ /* NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
+ * Already parsed: '<!NOTATION' */
+ TRACE(ctx, "parse_notation_decl");
+ struct xml_dtd *dtd = ctx->dtd;
+ xml_parse_dtd_white(ctx, 1);
+
+ struct xml_dtd_notn *notn = xml_dtd_notns_lookup(dtd->tab_notns, xml_parse_name(ctx, dtd->pool));
+ xml_parse_dtd_white(ctx, 1);
+ struct xml_ext_id eid;
+ xml_dtd_parse_external_id(ctx, &eid, 1);
+ xml_parse_dtd_white(ctx, 0);
+ xml_parse_char(ctx, '>');
+
+ if (notn->flags & XML_DTD_NOTN_DECLARED)
+ xml_warn(ctx, "Notation %s already declared", notn->name);
+ else
+ {
+ notn->flags = XML_DTD_NOTN_DECLARED;
+ notn->eid = eid;
+ slist_add_tail(&dtd->notns, ¬n->n);
+ }
+ xml_dec(ctx);
+}
+
+/* DTD: <!ENTITY ...> */
+
+void
+xml_parse_entity_decl(struct xml_context *ctx)
+{
+ /* Already parsed: '<!ENTITY' */
+ TRACE(ctx, "parse_entity_decl");
+ struct xml_dtd *dtd = ctx->dtd;
+ xml_parse_dtd_white(ctx, 1);
+
+ uns flags = (xml_get_char(ctx) == '%') ? XML_DTD_ENT_PARAMETER : 0;
+ if (flags)
+ xml_parse_dtd_white(ctx, 1);
+ else
+ xml_unget_char(ctx);
+
+ struct xml_dtd_ent *ent = xml_dtd_ents_lookup(flags ? dtd->tab_pents : dtd->tab_gents, xml_parse_name(ctx, dtd->pool));
+ slist *list = flags ? &dtd->pents : &dtd->gents;
+ xml_parse_dtd_white(ctx, 1);
+ if (ent->flags & XML_DTD_ENT_DECLARED)
+ {
+ xml_fatal(ctx, "Entity &%s; already declared, skipping not implemented", ent->name);
+ // FIXME: should be only warning
+ }
+
+ uns c, sep = xml_get_char(ctx);
+ if (sep == '\'' || sep == '"')
+ {
+ /* Internal entity:
+ * EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | "'" ([^%&'] | PEReference | Reference)* "'" */
+ char *p = mp_start_noalign(dtd->pool, 1);
+ while (1)
+ {
+ if ((c = xml_get_char(ctx)) == sep)
+ break;
+ if (c == '%')
+ {
+ // FIXME
+ ASSERT(0);
+ //xml_parse_parameter_ref(ctx);
+ continue;
+ }
+ if (c == '&')
+ {
+ xml_inc(ctx);
+ if (xml_peek_char(ctx) != '#')
+ {
+ /* Bypass references to general entities */
+ struct mempool_state state;
+ mp_save(ctx->stack, &state);
+ char *n = xml_parse_name(ctx, ctx->stack);
+ xml_parse_char(ctx, ';');
+ xml_dec(ctx);
+ uns l = strlen(n);
+ p = mp_spread(dtd->pool, p, 3 + l);
+ *p++ = '&';
+ memcpy(p, n, l);
+ *p++ = ';';;
+ mp_restore(ctx->stack, &state);
+ continue;
+ }
+ else
+ {
+ xml_skip_char(ctx);
+ c = xml_parse_char_ref(ctx);
+ }
+ }
+ p = mp_spread(dtd->pool, p, 5);
+ p = utf8_32_put(p, c);
+ }
+ *p = 0;
+ ent->len = p - (char *)mp_ptr(dtd->pool);
+ ent->text = mp_end(dtd->pool, p + 1);
+ slist_add_tail(list, &ent->n);
+ ent->flags = flags | XML_DTD_ENT_DECLARED;
+ }
+ else
+ {
+ /* External entity */
+ struct xml_ext_id eid;
+ struct xml_dtd_notn *notn = NULL;
+ xml_dtd_parse_external_id(ctx, &eid, 0);
+ if (!xml_parse_dtd_white(ctx, 0) || !flags)
+ xml_parse_char(ctx, '>');
+ else if (xml_get_char(ctx) != '>')
+ {
+ /* General external unparsed entity */
+ flags |= XML_DTD_ENT_UNPARSED;
+ xml_parse_seq(ctx, "NDATA");
+ xml_parse_dtd_white(ctx, 1);
+ notn = xml_dtd_notns_lookup(dtd->tab_notns, xml_parse_name(ctx, dtd->pool));
+ }
+ slist_add_tail(list, &ent->n);
+ ent->flags = flags | XML_DTD_ENT_DECLARED | XML_DTD_ENT_EXTERNAL;
+ ent->eid = eid;
+ ent->notn = notn;
+ }
+ xml_parse_dtd_white(ctx, 0);
+ xml_parse_char(ctx, '>');
+ xml_dec(ctx);
+}
+
+/* DTD: <!ELEMENT ...> */
+
+void
+xml_parse_element_decl(struct xml_context *ctx)
+{
+ /* Elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
+ * Already parsed: '<!ELEMENT' */
+ struct xml_dtd *dtd = ctx->dtd;
+ xml_parse_dtd_white(ctx, 1);
+ char *name = xml_parse_name(ctx, dtd->pool);
+ xml_parse_dtd_white(ctx, 1);
+ struct xml_dtd_elem *elem = xml_dtd_elems_lookup(dtd->tab_elems, name);
+ if (elem->flags & XML_DTD_ELEM_DECLARED)
+ xml_fatal(ctx, "Element <%s> already declared", name);
+
+ /* contentspec ::= 'EMPTY' | 'ANY' | Mixed | children */
+ uns c = xml_peek_char(ctx);
+ if (c == 'E')
+ {
+ xml_parse_seq(ctx, "EMPTY");
+ elem->type = XML_DTD_ELEM_EMPTY;
+ }
+ else if (c == 'A')
+ {
+ xml_parse_seq(ctx, "ANY");
+ elem->type = XML_DTD_ELEM_ANY;
+ }
+ else if (c == '(')
+ {
+ xml_skip_char(ctx);
+ xml_inc(ctx);
+ xml_parse_dtd_white(ctx, 0);
+ struct xml_dtd_elem_node *parent = elem->node = mp_alloc_zero(dtd->pool, sizeof(*parent));
+ if (xml_peek_char(ctx) == '#')
+ {
+ /* Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' | '(' S? '#PCDATA' S? ')' */
+ xml_skip_char(ctx);
+ xml_parse_seq(ctx, "PCDATA");
+ elem->type = XML_DTD_ELEM_MIXED;
+ parent->type = XML_DTD_ELEM_PCDATA;
+ while (1)
+ {
+ xml_parse_dtd_white(ctx, 0);
+ if ((c = xml_get_char(ctx)) == ')')
+ break;
+ else if (c != '|')
+ xml_fatal_expected(ctx, ')');
+ xml_parse_dtd_white(ctx, 0);
+ struct xml_dtd_elem *son_elem = xml_dtd_elems_lookup(dtd->tab_elems, xml_parse_name(ctx, dtd->pool));
+ if (xml_dtd_enodes_find(dtd->tab_enodes, parent, son_elem))
+ xml_error(ctx, "Duplicate content '%s'", son_elem->name);
+ else
+ {
+ struct xml_dtd_elem_node *son = xml_dtd_enodes_new(dtd->tab_enodes, parent, son_elem);
+ slist_add_tail(&parent->sons, &son->n);
+ }
+ }
+ xml_dec(ctx);
+ if (xml_peek_char(ctx) == '*')
+ {
+ xml_skip_char(ctx);
+ parent->occur = XML_DTD_ELEM_OCCUR_MULT;
+ }
+ else if (!slist_head(&parent->sons))
+ parent->occur = XML_DTD_ELEM_OCCUR_ONCE;
+ else
+ xml_fatal_expected(ctx, '*');
+ }
+ else
+ {
+ /* children ::= (choice | seq) ('?' | '*' | '+')?
+ * cp ::= (Name | choice | seq) ('?' | '*' | '+')?
+ * choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
+ * seq ::= '(' S? cp ( S? ',' S? cp )* S? ')' */
+
+ elem->type = XML_DTD_ELEM_CHILDREN;
+ parent->type = XML_DTD_ELEM_PCDATA;
+ uns c;
+ goto first;
+
+ while (1)
+ {
+ /* After name */
+ xml_parse_dtd_white(ctx, 0);
+ if ((c = xml_get_char(ctx)) == ')')
+ {
+ xml_dec(ctx);
+ if (parent->type == XML_DTD_ELEM_PCDATA)
+ parent->type = XML_DTD_ELEM_SEQ;
+ if ((c = xml_get_char(ctx)) == '?')
+ parent->occur = XML_DTD_ELEM_OCCUR_OPT;
+ else if (c == '*')
+ parent->occur = XML_DTD_ELEM_OCCUR_MULT;
+ else if (c == '+')
+ parent->occur = XML_DTD_ELEM_OCCUR_PLUS;
+ else
+ {
+ xml_unget_char(ctx);
+ parent->occur = XML_DTD_ELEM_OCCUR_ONCE;
+ }
+ if (!parent->parent)
+ break;
+ parent = parent->parent;
+ continue;
+ }
+ else if (c == '|')
+ {
+ if (parent->type == XML_DTD_ELEM_PCDATA)
+ parent->type = XML_DTD_ELEM_OR;
+ else if (parent->type != XML_DTD_ELEM_OR)
+ xml_fatal(ctx, "Mixed operators in the list of element children");
+ }
+ else if (c == ',')
+ {
+ if (parent->type == XML_DTD_ELEM_PCDATA)
+ parent->type = XML_DTD_ELEM_SEQ;
+ else if (parent->type != XML_DTD_ELEM_SEQ)
+ xml_fatal(ctx, "Mixed operators in the list of element children");
+ }
+ else if (c == '(')
+ {
+ xml_inc(ctx);
+ struct xml_dtd_elem_node *son = mp_alloc_zero(dtd->pool, sizeof(*son));
+ son->parent = parent;
+ slist_add_tail(&parent->sons, &son->n);
+ parent = son->parent;
+ son->type = XML_DTD_ELEM_MIXED;
+ }
+ else
+ xml_unget_char(ctx);
+
+ /* Before name */
+ xml_parse_dtd_white(ctx, 0);
+first:;
+ struct xml_dtd_elem *son_elem = xml_dtd_elems_lookup(dtd->tab_elems, xml_parse_name(ctx, dtd->pool));
+ // FIXME: duplicates, occurance
+ //struct xml_dtd_elem_node *son = xml_dtd_enodes_new(dtd->tab_enodes, parent, son_elem);
+ struct xml_dtd_elem_node *son = mp_alloc_zero(dtd->pool, sizeof(*son));
+ son->parent = parent;
+ son->elem = son_elem;
+ slist_add_tail(&parent->sons, &son->n);
+ }
+ }
+ }
+ else
+ xml_fatal(ctx, "Expected element content specification");
+
+ xml_parse_dtd_white(ctx, 0);
+ xml_parse_char(ctx, '>');
+ xml_dec(ctx);
+}
+
+void
+xml_parse_attr_list_decl(struct xml_context *ctx)
+{
+ /* AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
+ * AttDef ::= S Name S AttType S DefaultDecl
+ * Already parsed: '<!ATTLIST' */
+ struct xml_dtd *dtd = ctx->dtd;
+ xml_parse_dtd_white(ctx, 1);
+ struct xml_dtd_elem *elem = xml_dtd_elems_lookup(ctx->dtd->tab_elems, xml_parse_name(ctx, dtd->pool));
+
+ while (xml_parse_dtd_white(ctx, 0) && xml_peek_char(ctx) != '>')
+ {
+ char *name = xml_parse_name(ctx, dtd->pool);
+ struct xml_dtd_attr *attr = xml_dtd_attrs_find(dtd->tab_attrs, elem, name);
+ uns ignored = 0;
+ if (attr)
+ {
+ xml_warn(ctx, "Duplicate attribute definition");
+ ignored++;
+ }
+ else
+ attr = xml_dtd_attrs_new(ctx->dtd->tab_attrs, elem, name);
+ xml_parse_dtd_white(ctx, 1);
+ if (xml_peek_char(ctx) == '(')
+ {
+ xml_skip_char(ctx); // FIXME: xml_inc/dec ?
+ if (!ignored)
+ attr->type = XML_ATTR_ENUM;
+ do
+ {
+ xml_parse_dtd_white(ctx, 0);
+ char *value = xml_parse_nmtoken(ctx, dtd->pool);
+ if (!ignored)
+ if (xml_dtd_evals_find(ctx->dtd->tab_evals, attr, value))
+ xml_error(ctx, "Duplicate enumeration value");
+ else
+ xml_dtd_evals_new(ctx->dtd->tab_evals, attr, value);
+ xml_parse_dtd_white(ctx, 0);
+ }
+ while (xml_get_char(ctx) == '|');
+ xml_unget_char(ctx);
+ xml_parse_char(ctx, ')');
+ }
+ else
+ {
+ char *type = xml_parse_name(ctx, dtd->pool);
+ enum xml_dtd_attribute_type t = XML_ATTR_CDATA;
+ if (!strcmp(type, "CDATA"))
+ t = XML_ATTR_CDATA;
+ else if (!strcmp(type, "ID"))
+ t = XML_ATTR_ID;
+ else if (!strcmp(type, "IDREF"))
+ t = XML_ATTR_IDREF;
+ else if (!strcmp(type, "IDREFS"))
+ t = XML_ATTR_IDREFS;
+ else if (!strcmp(type, "ENTITY"))
+ t = XML_ATTR_ENTITY;
+ else if (!strcmp(type, "ENTITIES"))
+ t = XML_ATTR_ENTITIES;
+ else if (!strcmp(type, "NMTOKEN"))
+ t = XML_ATTR_NMTOKEN;
+ else if (!strcmp(type, "NMTOKENS"))
+ t = XML_ATTR_NMTOKENS;
+ else if (!strcmp(type, "NOTATION"))
+ {
+ if (elem->type == XML_DTD_ELEM_EMPTY)
+ xml_fatal(ctx, "Empty element must not have notation attribute");
+ // FIXME: An element type MUST NOT have more than one NOTATION attribute specified.
+ t = XML_ATTR_NOTATION;
+ xml_parse_dtd_white(ctx, 1);
+ xml_parse_char(ctx, '(');
+ do
+ {
+ xml_parse_dtd_white(ctx, 0);
+ struct xml_dtd_notn *n = xml_dtd_notns_lookup(ctx->dtd->tab_notns, xml_parse_name(ctx, dtd->pool));
+ if (!ignored)
+ if (xml_dtd_enotns_find(ctx->dtd->tab_enotns, attr, n))
+ xml_error(ctx, "Duplicate enumerated notation");
+ else
+ xml_dtd_enotns_new(ctx->dtd->tab_enotns, attr, n);
+ xml_parse_dtd_white(ctx, 0);
+ }
+ while (xml_get_char(ctx) == '|');
+ xml_unget_char(ctx);
+ xml_parse_char(ctx, ')');
+ }
+ else
+ xml_fatal(ctx, "Unknown attribute type");
+ if (!ignored)
+ attr->type = t;
+ }
+ xml_parse_dtd_white(ctx, 1);
+ enum xml_dtd_attribute_default def = XML_ATTR_NONE;
+ if (xml_get_char(ctx) == '#')
+ switch (xml_peek_char(ctx))
+ {
+ case 'R':
+ xml_parse_seq(ctx, "REQUIRED");
+ def = XML_ATTR_REQUIRED;
+ break;
+ case 'I':
+ xml_parse_seq(ctx, "IMPLIED");
+ def = XML_ATTR_IMPLIED;
+ break;
+ case 'F':
+ xml_parse_seq(ctx, "FIXED");
+ def = XML_ATTR_FIXED;
+ xml_parse_dtd_white(ctx, 1);
+ break;
+ default:
+ xml_fatal(ctx, "Expected a modifier for default attribute value");
+ }
+ else
+ xml_unget_char(ctx);
+ if (def != XML_ATTR_REQUIRED && def != XML_ATTR_IMPLIED)
+ {
+ char *v = xml_parse_attr_value(ctx, attr);
+ if (!ignored)
+ attr->default_value = v;
+ }
+ if (!ignored)
+ attr->default_mode = def;
+ }
+ xml_skip_char(ctx);
+ xml_dec(ctx);
+}
struct xml_dtd_notn *notn; /* Notation (XML_DTD_ENT_UNPARSED only) */
};
+struct xml_dtd_ent *xml_dtd_find_gent(struct xml_context *ctx, char *name);
+
/* Elements */
enum xml_dtd_elem_flags {
struct xml_dtd_notn *notn;
};
+void xml_dtd_init(struct xml_context *ctx);
+void xml_dtd_cleanup(struct xml_context *ctx);
+void xml_dtd_finish(struct xml_context *ctx);
+
#endif
--- /dev/null
+/*
+ * Sherlock Library -- A simple XML parser
+ *
+ * (c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
+ */
+
+#define LOCAL_DEBUG
+
+#include "sherlock/sherlock.h"
+#include "sherlock/xml/xml.h"
+#include "sherlock/xml/dtd.h"
+#include "sherlock/xml/common.h"
+#include "lib/fastbuf.h"
+#include "lib/ff-unicode.h"
+#include "lib/unicode.h"
+#include "lib/chartype.h"
+#include "lib/hashfunc.h"
+
+#include <setjmp.h>
+
+/*** Comments ***/
+
+void
+xml_push_comment(struct xml_context *ctx)
+{
+ TRACE(ctx, "push_comment");
+ /* Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
+ * Already parsed: '<!-' */
+ xml_parse_char(ctx, '-');
+ struct xml_node *n = xml_push_dom(ctx);
+ n->type = XML_NODE_COMMENT;
+ char *p = mp_start_noalign(ctx->pool, 6);
+ while (1)
+ {
+ if (xml_get_char(ctx) == '-')
+ if (xml_get_char(ctx) == '-')
+ break;
+ else
+ *p++ = '-';
+ p = utf8_32_put(p, xml_last_char(ctx));
+ p = mp_spread(ctx->pool, p, 6);
+ }
+ xml_parse_char(ctx, '>');
+ *p = 0;
+ n->len = p - (char *)mp_ptr(ctx->pool);
+ n->text = mp_end(ctx->pool, p + 1);
+ if (ctx->h_comment)
+ ctx->h_comment(ctx);
+}
+
+void
+xml_pop_comment(struct xml_context *ctx)
+{
+ xml_pop_dom(ctx);
+ xml_dec(ctx);
+ TRACE(ctx, "pop_comment");
+}
+
+void
+xml_skip_comment(struct xml_context *ctx)
+{
+ TRACE(ctx, "skip_comment");
+ xml_parse_char(ctx, '-');
+ while (xml_get_char(ctx) != '-' || xml_get_char(ctx) != '-');
+ xml_parse_char(ctx, '>');
+ xml_dec(ctx);
+}
+
+/*** Processing instructions ***/
+
+void
+xml_push_pi(struct xml_context *ctx)
+{
+ TRACE(ctx, "push_pi");
+ /* Parses a PI to ctx->value and ctx->name:
+ * PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
+ * PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
+ * Already parsed: '<?' */
+ struct xml_node *n = xml_push_dom(ctx);
+ n->type = XML_NODE_PI;
+ n->name = xml_parse_name(ctx, ctx->pool);
+ if (unlikely(!strcasecmp(n->name, "xml")))
+ xml_error(ctx, "Reserved PI target");
+ char *p = mp_start_noalign(ctx->pool, 5);
+ if (!xml_parse_white(ctx, 0))
+ xml_parse_seq(ctx, "?>");
+ else
+ while (1)
+ {
+ if (xml_get_char(ctx) == '?')
+ if (xml_peek_char(ctx) == '>')
+ {
+ xml_skip_char(ctx);
+ break;
+ }
+ else
+ *p++ = '?';
+ else
+ p = utf8_32_put(p, xml_last_char(ctx));
+ p = mp_spread(ctx->pool, p, 5);
+ }
+ *p = 0;
+ n->len = p - (char *)mp_ptr(ctx->pool);
+ n->text = mp_end(ctx->pool, p + 1);
+ if (ctx->h_pi)
+ ctx->h_pi(ctx);
+}
+
+void
+xml_pop_pi(struct xml_context *ctx)
+{
+ xml_pop_dom(ctx);
+ xml_dec(ctx);
+ TRACE(ctx, "pop_pi");
+}
+
+void
+xml_skip_pi(struct xml_context *ctx)
+{
+ TRACE(ctx, "skip_pi");
+ if (ctx->flags & XML_FLAG_VALIDATING)
+ {
+ struct mempool_state state;
+ mp_save(ctx->stack, &state);
+ if (unlikely(!strcasecmp(xml_parse_name(ctx, ctx->stack), "xml")))
+ xml_error(ctx, "Reserved PI target");
+ mp_restore(ctx->stack, &state);
+ if (!xml_parse_white(ctx, 0))
+ {
+ xml_parse_seq(ctx, "?>");
+ xml_dec(ctx);
+ return;
+ }
+ }
+ while (1)
+ if (xml_get_char(ctx) == '?')
+ if (xml_peek_char(ctx) == '>')
+ break;
+ xml_skip_char(ctx);
+ xml_dec(ctx);
+}
+
+/*** Character data ***/
+
+static void
+xml_chars_spout(struct fastbuf *fb)
+{
+ if (fb->bptr >= fb->bufend)
+ {
+ struct xml_context *ctx = SKIP_BACK(struct xml_context, chars, fb);
+ struct mempool *pool = ctx->pool;
+ if (fb->bufend != fb->buffer)
+ {
+ uns len = fb->bufend - fb->buffer;
+ TRACE(ctx, "grow_chars");
+ fb->buffer = mp_expand(pool);
+ fb->bufend = fb->buffer + mp_avail(pool);
+ fb->bstop = fb->buffer;
+ fb->bptr = fb->buffer + len;
+ }
+ else
+ {
+ TRACE(ctx, "push_chars");
+ struct xml_node *n = xml_push_dom(ctx);
+ n->type = XML_NODE_CDATA;
+ xml_start_chars(ctx);
+ }
+ }
+}
+
+static void
+xml_init_chars(struct xml_context *ctx)
+{
+ struct fastbuf *fb = &ctx->chars;
+ fb->name = "<xml-chars>";
+ fb->spout = xml_chars_spout;
+ fb->can_overwrite_buffer = 1;
+ fb->bptr = fb->bstop = fb->buffer = fb->bufend = NULL;
+}
+
+static inline uns
+xml_flush_chars(struct xml_context *ctx)
+{
+ struct fastbuf *fb = &ctx->chars;
+ if (fb->bufend == fb->buffer)
+ return 0;
+ TRACE(ctx, "flush_chars");
+ struct xml_node *n = ctx->node;
+ n->text = xml_end_chars(ctx, &n->len);
+ n->len = fb->bufend - fb->buffer;
+ if (ctx->h_chars)
+ ctx->h_chars(ctx);
+ return 1;
+}
+
+static inline void
+xml_pop_chars(struct xml_context *ctx)
+{
+ xml_pop_dom(ctx);
+ TRACE(ctx, "pop_chars");
+}
+
+static inline void
+xml_append_chars(struct xml_context *ctx)
+{
+ TRACE(ctx, "append_chars");
+ struct fastbuf *out = &ctx->chars;
+ while (xml_get_char(ctx) != '<')
+ if (xml_last_char(ctx) == '&')
+ {
+ xml_inc(ctx);
+ xml_parse_ref(ctx);
+ }
+ else
+ bput_utf8_32(out, xml_last_char(ctx));
+ xml_unget_char(ctx);
+}
+
+/*** CDATA sections ***/
+
+static void
+xml_push_cdata(struct xml_context *ctx)
+{
+ TRACE(ctx, "push_cdata");
+ /* CDSect :== '<![CDATA[' (Char* - (Char* ']]>' Char*)) ']]>'
+ * Already parsed: '<![' */
+ xml_parse_seq(ctx, "CDATA[");
+ struct xml_node *n = xml_push_dom(ctx);
+ n->type = XML_NODE_CDATA;
+ char *p = mp_start_noalign(ctx->pool, 7);
+ while (1)
+ {
+ if (xml_get_char(ctx) == ']')
+ {
+ if (xml_get_char(ctx) == ']')
+ if (xml_get_char(ctx) == '>')
+ break;
+ else
+ *p++ = ']';
+ *p++ = ']';
+ }
+ p = utf8_32_put(p, xml_last_char(ctx));
+ p = mp_spread(ctx->pool, p, 7);
+ }
+ *p = 0;
+ n->len = p - (char *)mp_ptr(ctx->pool);
+ n->text = mp_end(ctx->pool, p + 1);
+ if (ctx->h_cdata)
+ ctx->h_cdata(ctx);
+}
+
+static void
+xml_pop_cdata(struct xml_context *ctx)
+{
+ xml_pop_dom(ctx);
+ xml_dec(ctx);
+ TRACE(ctx, "pop_cdata");
+}
+
+static void
+xml_append_cdata(struct xml_context *ctx)
+{
+ TRACE(ctx, "append_cdata");
+ xml_parse_seq(ctx, "CDATA[");
+ struct fastbuf *out = &ctx->chars;
+ while (1)
+ {
+ if (xml_get_char(ctx) == ']')
+ {
+ if (xml_get_char(ctx) == ']')
+ if (xml_get_char(ctx) == '>')
+ break;
+ else
+ bputc(out, ']');
+ bputc(out, ']');
+ }
+ bput_utf8_32(out, xml_last_char(ctx));
+ }
+ xml_dec(ctx);
+}
+
+static void UNUSED
+xml_skip_cdata(struct xml_context *ctx)
+{
+ TRACE(ctx, "skip_cdata");
+ xml_parse_seq(ctx, "CDATA[");
+ while (xml_get_char(ctx) != ']' || xml_get_char(ctx) != ']' || xml_get_char(ctx) != '>');
+ xml_dec(ctx);
+}
+
+/*** Character references ***/
+
+uns
+xml_parse_char_ref(struct xml_context *ctx)
+{
+ TRACE(ctx, "parse_char_ref");
+ /* CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'
+ * Already parsed: '&#' */
+ uns v = 0;
+ if (xml_get_char(ctx) == 'x')
+ {
+ if (!(xml_get_cat(ctx) & XML_CHAR_XDIGIT))
+ {
+ xml_error(ctx, "Expected a hexadecimal value of character reference");
+ goto recover;
+ }
+ do
+ {
+ v = (v << 4) + Cxvalue(xml_last_char(ctx));
+ }
+ while (v < 0x110000 && (xml_get_cat(ctx) & XML_CHAR_XDIGIT));
+ }
+ else
+ {
+ if (!(xml_last_cat(ctx) & XML_CHAR_DIGIT))
+ {
+ xml_error(ctx, "Expected a numeric value of character reference");
+ goto recover;
+ }
+ do
+ {
+ v = v * 10 + xml_last_char(ctx) - '0';
+ }
+ while (v < 0x110000 && (xml_get_cat(ctx) & XML_CHAR_DIGIT));
+ }
+ uns cat = xml_char_cat(v);
+ if (!(cat & XML_CHAR_UNRESTRICTED_1_1) && ((ctx->flags & XML_FLAG_VERSION_1_1) || !(cat & XML_CHAR_VALID_1_0)))
+ {
+ xml_error(ctx, "Character reference out of range");
+ goto recover;
+ }
+ if (xml_last_char(ctx) == ';')
+ {
+ xml_dec(ctx);
+ return v;
+ }
+ xml_error(ctx, "Expected ';'");
+recover:
+ while (xml_last_char(ctx) != ';')
+ xml_get_char(ctx);
+ xml_dec(ctx);
+ return UNI_REPLACEMENT;
+}
+
+/*** References to general entities ***/
+
+void
+xml_parse_ref(struct xml_context *ctx)
+{
+ /* Reference ::= EntityRef | CharRef
+ * EntityRef ::= '&' Name ';'
+ * Already parsed: '&' */
+ struct fastbuf *out = &ctx->chars;
+ if (xml_peek_char(ctx) == '#')
+ {
+ xml_skip_char(ctx);
+ bput_utf8_32(out, xml_parse_char_ref(ctx));
+ }
+ else
+ {
+ TRACE(ctx, "parse_ge_ref");
+ struct mempool_state state;
+ mp_save(ctx->stack, &state);
+ char *name = xml_parse_name(ctx, ctx->stack);
+ xml_parse_char(ctx, ';');
+ struct xml_dtd_ent *ent = xml_dtd_find_gent(ctx, name);
+ if (!ent)
+ {
+ xml_error(ctx, "Unknown entity &%s;", name);
+ bputc(out, '&');
+ bputs(out, name);
+ bputc(out, ';');
+ }
+ else if (ent->flags & XML_DTD_ENT_TRIVIAL)
+ {
+ TRACE(ctx, "Trivial entity &%s;", name);
+ bwrite(out, ent->text, ent->len);
+ }
+ else
+ {
+ TRACE(ctx, "Pushed entity &%s;", name);
+ mp_restore(ctx->stack, &state);
+ xml_dec(ctx);
+ xml_push_entity(ctx, ent);
+ return;
+ }
+ mp_restore(ctx->stack, &state);
+ xml_dec(ctx);
+ }
+}
+
+/*** Attribute values ***/
+
+char *
+xml_parse_attr_value(struct xml_context *ctx, struct xml_dtd_attr *attr UNUSED)
+{
+ TRACE(ctx, "parse_attr_value");
+ /* AttValue ::= '"' ([^<&"] | Reference)* '"' | "'" ([^<&'] | Reference)* "'" */
+ /* FIXME:
+ * -- copying from ctx->chars to ctx->pool is not necessary, we could directly write to ctx->pool
+ * -- berare quotes inside parased entities
+ * -- check value constrains / normalize value */
+ struct mempool_state state;
+ uns quote = xml_parse_quote(ctx);
+ mp_save(ctx->stack, &state);
+ xml_start_chars(ctx);
+ struct fastbuf *out = &ctx->chars;
+ while (1)
+ {
+ uns c = xml_get_char(ctx);
+ if (c == '&')
+ {
+ xml_inc(ctx);
+ xml_parse_ref(ctx);
+ }
+ else if (c == quote) // FIXME: beware quotes inside parsed entities
+ break;
+ else if (c == '<')
+ xml_error(ctx, "Attribute value must not contain '<'");
+ else if (xml_last_cat(ctx) & XML_CHAR_WHITE)
+ bputc(out, ' ');
+ else
+ bput_utf8_32(out, c);
+ }
+ mp_restore(ctx->stack, &state);
+ uns len;
+ return xml_end_chars(ctx, &len);
+}
+
+/*** Attributes ***/
+
+struct xml_attrs_table;
+
+static inline uns
+xml_attrs_hash(struct xml_attrs_table *t UNUSED, struct xml_node *e, char *n)
+{
+ return hash_pointer(e) ^ hash_string(n);
+}
+
+static inline int
+xml_attrs_eq(struct xml_attrs_table *t UNUSED, struct xml_node *e1, char *n1, struct xml_node *e2, char *n2)
+{
+ return (e1 == e2) && !strcmp(n1, n2);
+}
+
+static inline void
+xml_attrs_init_key(struct xml_attrs_table *t UNUSED, struct xml_attr *a, struct xml_node *e, char *name)
+{
+ a->elem = e;
+ a->name = name;
+ a->val = NULL;
+ slist_add_tail(&e->attrs, &a->n);
+}
+
+#define HASH_PREFIX(x) xml_attrs_##x
+#define HASH_NODE struct xml_attr
+#define HASH_KEY_COMPLEX(x) x elem, x name
+#define HASH_KEY_DECL struct xml_node *elem, char *name
+#define HASH_TABLE_DYNAMIC
+#define HASH_GIVE_EQ
+#define HASH_GIVE_HASHFN
+#define HASH_GIVE_INIT_KEY
+#define HASH_WANT_CLEANUP
+#define HASH_WANT_REMOVE
+#define HASH_WANT_LOOKUP
+#define HASH_WANT_FIND
+#define HASH_GIVE_ALLOC
+XML_HASH_GIVE_ALLOC
+#include "lib/hashtable.h"
+
+static void
+xml_parse_attr(struct xml_context *ctx)
+{
+ TRACE(ctx, "parse_attr");
+ /* Attribute ::= Name Eq AttValue */
+ /* FIXME:
+ * -- memory management
+ * -- DTD */
+ struct xml_node *e = ctx->node;
+ char *n = xml_parse_name(ctx, ctx->pool);
+ struct xml_attr *a = xml_attrs_lookup(ctx->tab_attrs, e, n);
+ xml_parse_eq(ctx);
+ char *v = xml_parse_attr_value(ctx, NULL);
+ if (a->val)
+ xml_error(ctx, "Attribute %s is not unique", n);
+ else
+ a->val = v;
+}
+
+/*** Elements ***/
+
+static void
+xml_push_element(struct xml_context *ctx)
+{
+ TRACE(ctx, "push_element");
+ /* EmptyElemTag | STag
+ * EmptyElemTag ::= '<' Name (S Attribute)* S? '/>'
+ * STag ::= '<' Name (S Attribute)* S? '>'
+ * Already parsed: '<' */
+ struct xml_node *e = xml_push_dom(ctx);
+ clist_init(&e->sons);
+ e->type = XML_NODE_ELEM;
+ e->name = xml_parse_name(ctx, ctx->pool);
+ slist_init(&e->attrs);
+ if (!e->parent)
+ {
+ ctx->root = e;
+ if (ctx->document_type && strcmp(e->name, ctx->document_type))
+ xml_error(ctx, "The root element %s does not match the document type %s", e->name, ctx->document_type);
+ }
+ while (1)
+ {
+ uns white = xml_parse_white(ctx, 0);
+ uns c = xml_get_char(ctx);
+ if (c == '/')
+ {
+ xml_parse_char(ctx, '>');
+ ctx->flags |= XML_FLAG_EMPTY_ELEM;
+ break;
+ }
+ else if (c == '>')
+ break;
+ else if (!white)
+ xml_fatal_expected_white(ctx);
+ xml_unget_char(ctx);
+ xml_parse_attr(ctx);
+ }
+ if (ctx->h_element_start)
+ ctx->h_element_start(ctx);
+}
+
+static void
+xml_pop_element(struct xml_context *ctx)
+{
+ TRACE(ctx, "pop_element");
+ if (ctx->h_element_end)
+ ctx->h_element_end(ctx);
+ struct xml_node *e = ctx->node;
+ if (ctx->flags & XML_DOM_FREE)
+ {
+ if (!e->parent)
+ ctx->root = NULL;
+ /* Restore hash table of attributes */
+ SLIST_FOR_EACH(struct xml_attr *, a, e->attrs)
+ xml_attrs_remove(ctx->tab_attrs, a);
+ struct xml_node *n;
+ while (n = clist_head(&e->sons))
+ {
+ if (n->type == XML_NODE_ELEM)
+ {
+ SLIST_FOR_EACH(struct xml_attr *, a, n->attrs)
+ xml_attrs_remove(ctx->tab_attrs, a);
+ clist_insert_list_after(&n->sons, &n->n);
+ }
+ clist_remove(&n->n);
+ }
+ }
+ xml_pop_dom(ctx);
+ xml_dec(ctx);
+}
+
+static void
+xml_parse_etag(struct xml_context *ctx)
+{
+ /* ETag ::= '</' Name S? '>'
+ * Already parsed: '<' */
+ struct xml_node *e = ctx->node;
+ ASSERT(e);
+ char *n = e->name;
+ while (*n)
+ {
+ uns c;
+ n = utf8_32_get(n, &c);
+ if (xml_get_char(ctx) != c)
+ goto recover;
+ }
+ xml_parse_white(ctx, 0);
+ if (xml_get_char(ctx) != '>')
+ {
+recover:
+ xml_error(ctx, "Invalid ETag, expected </%s>", e->name);
+ while (xml_get_char(ctx) != '>');
+ }
+ xml_dec(ctx);
+}
+
+/*** Document type declaration ***/
+
+static void
+xml_parse_doctype_decl(struct xml_context *ctx)
+{
+ TRACE(ctx, "parse_doctype_decl");
+ /* doctypedecl ::= '<!DOCTYPE' S Name (S ExternalID)? S? ('[' intSubset ']' S?)? '>'
+ * Already parsed: '<!'
+ * Terminated before '[' or '>' */
+ if (ctx->document_type)
+ xml_fatal(ctx, "Multiple document types not allowed");
+ xml_parse_seq(ctx, "DOCTYPE");
+ xml_parse_white(ctx, 1);
+ ctx->document_type = xml_parse_name(ctx, ctx->pool);
+ TRACE(ctx, "doctyype=%s", ctx->document_type);
+ uns c;
+ if (xml_parse_white(ctx, 0) && ((c = xml_peek_char(ctx)) == 'S' || c == 'P'))
+ {
+ if (c == 'S')
+ {
+ xml_parse_seq(ctx, "SYSTEM");
+ xml_parse_white(ctx, 1);
+ ctx->eid.system_id = xml_parse_system_literal(ctx, ctx->pool);
+ }
+ else
+ {
+ xml_parse_seq(ctx, "PUBLIC");
+ xml_parse_white(ctx, 1);
+ ctx->eid.public_id = xml_parse_pubid_literal(ctx, ctx->pool);
+ xml_parse_white(ctx, 1);
+ ctx->eid.system_id = xml_parse_system_literal(ctx, ctx->pool);
+ }
+ xml_parse_white(ctx, 0);
+ ctx->flags |= XML_FLAG_HAS_EXTERNAL_SUBSET;
+ }
+ if (xml_peek_char(ctx) == '[')
+ ctx->flags |= XML_FLAG_HAS_INTERNAL_SUBSET;
+ if (ctx->h_doctype_decl)
+ ctx->h_doctype_decl(ctx);
+}
+
+
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/* DTD: Internal subset */
+
+static void
+xml_parse_internal_subset(struct xml_context *ctx)
+{
+ // FIXME: comments/pi have no parent
+ /* '[' intSubset ']'
+ * intSubset :== (markupdecl | DeclSep)
+ * Already parsed: ']' */
+ while (1)
+ {
+ xml_parse_white(ctx, 0);
+ uns c = xml_get_char(ctx);
+ xml_inc(ctx);
+ if (c == '<')
+ if ((c = xml_get_char(ctx)) == '!')
+ switch (c = xml_get_char(ctx))
+ {
+ case '-':
+ xml_push_comment(ctx);
+ xml_pop_comment(ctx);
+ break;
+ case 'N':
+ xml_parse_seq(ctx, "OTATION");
+ xml_parse_notation_decl(ctx);
+ break;
+ case 'E':
+ if ((c = xml_get_char(ctx)) == 'N')
+ {
+ xml_parse_seq(ctx, "TITY");
+ xml_parse_entity_decl(ctx);
+ }
+ else if (c == 'L')
+ {
+ xml_parse_seq(ctx, "EMENT");
+ xml_parse_element_decl(ctx);
+ }
+ else
+ goto invalid_markup;
+ break;
+ case 'A':
+ xml_parse_seq(ctx, "TTLIST");
+ xml_parse_attr_list_decl(ctx);
+ break;
+ default:
+ goto invalid_markup;
+ }
+ else if (c == '?')
+ {
+ xml_push_pi(ctx);
+ xml_pop_pi(ctx);
+ }
+ else
+ goto invalid_markup;
+ else if (c == '%')
+ xml_parse_pe_ref(ctx);
+ else if (c == ']')
+ break;
+ else
+ goto invalid_markup;
+ }
+ xml_dec(ctx);
+ xml_dec(ctx);
+ return;
+invalid_markup:
+ xml_fatal(ctx, "Invalid markup in the internal subset");
+}
+
+
+/*----------------------------------------------*/
+
+void
+xml_init(struct xml_context *ctx)
+{
+ bzero(ctx, sizeof(*ctx));
+ ctx->pool = mp_new(65536);
+ ctx->stack = mp_new(65536);
+ ctx->flags = XML_DOM_FREE;
+ xml_init_chars(ctx);
+ xml_dtd_init(ctx);
+ xml_attrs_init(ctx->tab_attrs = xml_hash_new(ctx->pool, sizeof(struct xml_attrs_table)));
+}
+
+void
+xml_cleanup(struct xml_context *ctx)
+{
+ xml_attrs_cleanup(ctx->tab_attrs);
+ xml_dtd_cleanup(ctx);
+ mp_delete(ctx->pool);
+ mp_delete(ctx->stack);
+}
+
+int
+xml_next(struct xml_context *ctx)
+{
+ /* A nasty state machine */
+
+ TRACE(ctx, "xml_next (state=%u)", ctx->state);
+ jmp_buf throw_buf;
+ ctx->throw_buf = &throw_buf;
+ if (setjmp(throw_buf))
+ {
+error:
+ if (ctx->err_code == XML_ERR_EOF && ctx->h_fatal)
+ ctx->h_fatal(ctx);
+ ctx->state = XML_STATE_FATAL;
+ TRACE(ctx, "raised fatal error");
+ return -1;
+ }
+ uns c;
+ switch (ctx->state)
+ {
+ case XML_STATE_FATAL:
+ return -1;
+
+ case XML_STATE_START:
+ TRACE(ctx, "entering prolog");
+ if (ctx->h_document_start)
+ ctx->h_document_start(ctx);
+ /* XMLDecl */
+ xml_refill(ctx);
+ if (ctx->h_xml_decl)
+ ctx->h_xml_decl(ctx);
+ if (ctx->want & XML_WANT_DECL)
+ return ctx->state = XML_STATE_DECL;
+ case XML_STATE_DECL:
+
+ /* Misc* (doctypedecl Misc*)? */
+ while (1)
+ {
+ xml_parse_white(ctx, 0);
+ xml_parse_char(ctx, '<');
+ if ((c = xml_get_char(ctx)) == '?')
+ /* Processing intruction */
+ if (!(ctx->want & XML_WANT_PI))
+ xml_skip_pi(ctx);
+ else
+ {
+ xml_push_pi(ctx);
+ ctx->state = XML_STATE_PROLOG_PI;
+ return XML_STATE_PI;
+ case XML_STATE_PROLOG_PI:
+ xml_pop_pi(ctx);
+ }
+ else if (c != '!')
+ {
+ /* Found the root tag */
+ xml_unget_char(ctx);
+ goto first_tag;
+ }
+ else if (xml_get_char(ctx) == '-')
+ if (!(ctx->want & XML_WANT_COMMENT))
+ xml_skip_comment(ctx);
+ else
+ {
+ xml_push_comment(ctx);
+ ctx->state = XML_STATE_PROLOG_COMMENT;
+ return XML_STATE_COMMENT;
+ case XML_STATE_PROLOG_COMMENT:
+ xml_pop_comment(ctx);
+ }
+ else
+ {
+ /* DocTypeDecl */
+ xml_unget_char(ctx);
+ xml_parse_doctype_decl(ctx);
+ if (ctx->want & XML_WANT_DOCUMENT_TYPE)
+ return ctx->state = XML_STATE_DOCUMENT_TYPE;
+ case XML_STATE_DOCUMENT_TYPE:
+ if (xml_peek_char(ctx) == '[')
+ {
+ xml_skip_char(ctx);
+ xml_inc(ctx);
+ xml_parse_internal_subset(ctx);
+ xml_parse_white(ctx, 0);
+ }
+ xml_parse_char(ctx, '>');
+ }
+ }
+
+ case XML_STATE_CHARS:
+
+ while (1)
+ {
+ if (xml_peek_char(ctx) != '<')
+ {
+ /* CharData */
+ xml_append_chars(ctx);
+ continue;
+ }
+ else
+ xml_skip_char(ctx);
+first_tag: ;
+
+ xml_inc(ctx);
+ if ((c = xml_get_char(ctx)) == '?')
+ {
+ /* PI */
+ if (!(ctx->want & XML_WANT_PI))
+ xml_skip_pi(ctx);
+ else
+ {
+ if (xml_flush_chars(ctx))
+ {
+ if (ctx->want & XML_WANT_CHARS)
+ {
+ ctx->state = XML_STATE_CHARS_BEFORE_PI;
+ return XML_STATE_CHARS;
+ }
+ case XML_STATE_CHARS_BEFORE_PI:
+ xml_pop_chars(ctx);
+ }
+ xml_push_pi(ctx);
+ return ctx->state = XML_STATE_PI;
+ case XML_STATE_PI:
+ xml_pop_pi(ctx);
+ }
+ }
+
+ else if (c == '!')
+ if ((c = xml_get_char(ctx)) == '-')
+ {
+ /* Comment */
+ if (!(ctx->want & XML_WANT_COMMENT))
+ xml_skip_comment(ctx);
+ else
+ {
+ if (xml_flush_chars(ctx))
+ {
+ if (ctx->want & XML_WANT_CHARS)
+ {
+ ctx->state = XML_STATE_CHARS_BEFORE_COMMENT;
+ return XML_STATE_CHARS;
+ }
+ case XML_STATE_CHARS_BEFORE_COMMENT:
+ xml_pop_chars(ctx);
+ }
+ xml_push_comment(ctx);
+ return ctx->state = XML_STATE_COMMENT;
+ case XML_STATE_COMMENT:
+ xml_pop_comment(ctx);
+ }
+ }
+ else if (c == '[')
+ {
+ /* CDATA */
+ if (!(ctx->want & XML_WANT_CDATA))
+ xml_append_cdata(ctx);
+ else
+ {
+ if (xml_flush_chars(ctx))
+ {
+ if (ctx->want & XML_WANT_CHARS)
+ {
+ ctx->state = XML_STATE_CHARS_BEFORE_CDATA;
+ return XML_STATE_CHARS;
+ }
+ case XML_STATE_CHARS_BEFORE_CDATA:
+ xml_pop_chars(ctx);
+ }
+ xml_push_cdata(ctx);
+ return ctx->state = XML_STATE_CDATA;
+ case XML_STATE_CDATA:
+ xml_pop_cdata(ctx);
+ }
+ }
+ else
+ xml_fatal(ctx, "Unexpected character after '<!'");
+
+ else if (c != '/')
+ {
+ /* STag | EmptyElemTag */
+ xml_unget_char(ctx);
+ if (xml_flush_chars(ctx))
+ {
+ if (ctx->want & XML_WANT_CHARS)
+ {
+ ctx->state = XML_STATE_CHARS_BEFORE_STAG;
+ return XML_STATE_CHARS;
+ }
+ case XML_STATE_CHARS_BEFORE_STAG:
+ xml_pop_chars(ctx);
+ }
+
+ xml_push_element(ctx);
+ if (ctx->want & XML_WANT_STAG)
+ return ctx->state = XML_STATE_STAG;
+ case XML_STATE_STAG:
+ if (ctx->flags & XML_FLAG_EMPTY_ELEM)
+ goto pop_element;
+ }
+
+ else
+ {
+ /* ETag */
+ if (xml_flush_chars(ctx))
+ {
+ if (ctx->want & XML_WANT_CHARS)
+ {
+ ctx->state = XML_STATE_CHARS_BEFORE_ETAG;
+ return XML_STATE_CHARS;
+ }
+ case XML_STATE_CHARS_BEFORE_ETAG:
+ xml_pop_chars(ctx);
+ }
+
+ xml_parse_etag(ctx);
+pop_element:
+ if (ctx->want & XML_WANT_ETAG)
+ return ctx->state = XML_STATE_ETAG;
+ case XML_STATE_ETAG:
+ xml_pop_element(ctx);
+ if (!ctx->node)
+ goto epilog;
+ }
+ }
+
+epilog:
+ /* Misc* */
+ TRACE(ctx, "entering epilog");
+ while (1)
+ {
+ /* Epilog whitespace is the only place, where a valid document can reach EOF */
+ if (setjmp(throw_buf))
+ if (ctx->err_code == XML_ERR_EOF)
+ {
+ TRACE(ctx, "reached EOF");
+ ctx->state = XML_STATE_EOF;
+ if (ctx->h_document_end)
+ ctx->h_document_end(ctx);
+ case XML_STATE_EOF:
+ return XML_STATE_EOF;
+ }
+ else
+ goto error;
+ xml_parse_white(ctx, 0);
+ if (setjmp(throw_buf))
+ goto error;
+
+ /* Misc */
+ xml_parse_char(ctx, '<');
+ if ((c = xml_get_char(ctx)) == '?')
+ /* Processing instruction */
+ if (!(ctx->want & XML_WANT_PI))
+ xml_skip_pi(ctx);
+ else
+ {
+ xml_push_pi(ctx);
+ return ctx->state = XML_STATE_EPILOG_PI, XML_STATE_PI;
+ case XML_STATE_EPILOG_PI:
+ xml_pop_pi(ctx);
+ }
+ else if (c == '!')
+ /* Comment */
+ if (!(ctx->want & XML_WANT_COMMENT))
+ xml_skip_comment(ctx);
+ else
+ {
+ xml_push_comment(ctx);
+ return ctx->state = XML_STATE_EPILOG_COMMENT, XML_STATE_COMMENT;
+ case XML_STATE_EPILOG_COMMENT:
+ xml_pop_comment(ctx);
+ }
+ else
+ xml_fatal(ctx, "Syntax error in the epilog");
+ }
+
+ }
+ return -1;
+}
set("NAME_1_1", @sname_1_1, "[-.0-9]", 0xB7, [0x0300,0x036F], [0x203F,0x2040]);
set("GT", "[>]");
+($ARGV[0] eq "" || $ARGV[1] eq "") && die("Invalid usage");
find_cls();
+open(H, ">", $ARGV[0]) or die("Cannot create $ARGV[0]");
+open(C, ">", $ARGV[1]) or die("Cannot create $ARGV[1]");
gen_enum();
gen_tabs();
+close(H);
+close(C);
sub set {
my $id = shift;
}
sub gen_enum {
- print "enum xml_char_type {\n";
+ print H "enum xml_char_type {\n";
foreach my $id (sort keys %ids) {
my $mask = 0;
foreach my $i (keys %cls) {
$mask |= 1 << $cls{$i} if $cls{$i} && ($i & (1 << $ids{$id}));
}
- printf " XML_CHAR_%-20s = 0x%08x,\n", $id, $mask;
+ printf H " XML_CHAR_%-20s = 0x%08x,\n", $id, $mask;
}
- print "};\n\n";
+ print H "};\n\n";
}
sub gen_tabs {
my @tab = ();
my %hash = ();
- print "static const uns xml_char_tab1[] = {\n ";
+
+ print H "extern const byte xml_char_tab1[];\n";
+ print H "extern const uns xml_char_tab2[];\n";
+ print H "extern const byte xml_char_tab3[];\n";
+
+ print C "const uns xml_char_tab2[] = {\n ";
for (my $t=0; $t<256; $t++) {
my $i = $t * 256;
my @x = ();
$hash{$sub} = 256 * scalar @tab;
push @tab, $sub;
}
- printf("0x%x", $hash{$sub});
- print((~$t & 15) ? "," : ($t < 255) ? ",\n " : "\n};\n\n");
+ printf C "0x%x", $hash{$sub};
+ print C ((~$t & 15) ? "," : ($t < 255) ? ",\n " : "\n};\n\n");
}
- print "static const byte xml_char_tab2[] = {\n";
- print join(",\n\n", @tab);
- print "\n};\n\n";
+ print C "const byte xml_char_tab1[] = {\n";
+ print C join(",\n\n", @tab);
+ print C "\n};\n\n";
my @l = ();
for (my $i=0; $i<0x11; $i++) {
push @l, sprintf("%d", $cls{$lcat[$i]});
}
- print "static const byte xml_char_tab3[] = {" . join(",", @l) . "};\n";
+ print C "const byte xml_char_tab3[] = {" . join(",", @l) . "};\n";
}
--- /dev/null
+/*
+ * Sherlock Library -- A simple XML parser
+ *
+ * (c) 2007 Pavel Charvat <pchar@ucw.cz>
+ *
+ * This software may be freely distributed and used according to the terms
+ * of the GNU Lesser General Public License.
+ */
+
+#include "sherlock/sherlock.h"
+#include "sherlock/xml/xml.h"
+#include "lib/getopt.h"
+#include "lib/fastbuf.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static char *shortopts = "sp" CF_SHORT_OPTS;
+static struct option longopts[] = {
+ CF_LONG_OPTS
+ { "sax", 0, 0, 's' },
+ { "pull", 0, 0, 'p' },
+ { "dom", 0, 0, 'd' },
+ { NULL, 0, 0, 0 }
+};
+
+static void NONRET
+usage(void)
+{
+ fputs("\
+Usage: xml-test [options] < in.xml\n\
+\n\
+Options:\n"
+CF_USAGE
+"\
+-s, --pull Test PULL interface\n\
+-s, --sax Test SAX interface\n\
+-d, --dom Test DOM interface\n\
+\n", stderr);
+ exit(1);
+}
+
+static uns want_sax;
+static uns want_pull;
+static uns want_dom;
+static struct fastbuf *out;
+
+static char *
+node_type(struct xml_node *node)
+{
+ switch (node->type)
+ {
+ case XML_NODE_ELEM: return "element";
+ case XML_NODE_COMMENT: return "comment";
+ case XML_NODE_PI: return "pi";
+ case XML_NODE_CDATA: return "chars";
+ default: return "unknown";
+ }
+}
+
+static void
+show_node(struct xml_node *node)
+{
+ switch (node->type)
+ {
+ case XML_NODE_ELEM:
+ bprintf(out, " <%s>", node->name);
+ SLIST_FOR_EACH(struct xml_attr *, a, node->attrs)
+ bprintf(out, " %s='%s'", a->name, a->val);
+ bputc(out, '\n');
+ break;
+ case XML_NODE_COMMENT:
+ bprintf(out, " text='%s'\n", node->text);
+ break;
+ case XML_NODE_PI:
+ bprintf(out, " target=%s text='%s'\n", node->name, node->text);
+ break;
+ case XML_NODE_CDATA:
+ bprintf(out, " text='%s'\n", node->text);
+ break;
+ default:
+ bputc(out, '\n');
+ }
+}
+
+static void
+show_tree(struct xml_node *node, uns level)
+{
+ if (!node)
+ return;
+ bputs(out, "DOM: ");
+ for (uns i = 0; i < level; i++)
+ bputs(out, " ");
+ bputs(out, node_type(node));
+ show_node(node);
+ if (node->type == XML_NODE_ELEM)
+ CLIST_FOR_EACH(struct xml_node *, son, node->sons)
+ show_tree(son, level + 1);
+}
+
+static void
+h_error(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: %s at %u: %s\n", (ctx->err_code < XML_ERR_ERROR) ? "warn" : "error", xml_row(ctx), ctx->err_msg);
+}
+
+static void
+h_document_start(struct xml_context *ctx UNUSED)
+{
+ bputs(out, "SAX: document_start\n");
+}
+
+static void
+h_document_end(struct xml_context *ctx UNUSED)
+{
+ bputs(out, "SAX: document_end\n");
+}
+
+static void
+h_xml_decl(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: xml_decl version=%s standalone=%d\n", ctx->version_str, ctx->standalone);
+}
+
+static void
+h_doctype_decl(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: doctype_decl type=%s public='%s' system='%s' extsub=%d intsub=%d\n",
+ ctx->document_type, ctx->eid.public_id ? : "", ctx->eid.system_id ? : "",
+ !!(ctx->flags & XML_FLAG_HAS_EXTERNAL_SUBSET), !!(ctx->flags & XML_FLAG_HAS_INTERNAL_SUBSET));
+}
+
+static void
+h_comment(struct xml_context *ctx)
+{
+ bputs(out, "SAX: comment");
+ show_node(ctx->node);
+}
+
+static void
+h_pi(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: pi");
+ show_node(ctx->node);
+}
+
+static void
+h_element_start(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: element_start");
+ show_node(ctx->node);
+}
+
+static void
+h_element_end(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: element_end </%s>\n", ctx->node->name);
+}
+
+static void
+h_chars(struct xml_context *ctx)
+{
+ bprintf(out, "SAX: chars");
+ show_node(ctx->node);
+}
+
+int
+main(int argc, char **argv)
+{
+ int opt;
+ cf_def_file = NULL; // FIXME
+ log_init(argv[0]);
+ while ((opt = cf_getopt(argc, argv, shortopts, longopts, NULL)) >= 0)
+ switch (opt)
+ {
+ case 's':
+ want_sax++;
+ break;
+ case 'p':
+ want_pull++;
+ break;
+ case 'd':
+ want_dom++;
+ break;
+ default:
+ usage();
+ }
+ if (optind != argc)
+ usage();
+
+ out = bfdopen_shared(1, 4096);
+ struct xml_context ctx;
+ xml_init(&ctx);
+ ctx.h_warn = ctx.h_error = ctx.h_fatal = h_error;
+ if (want_sax)
+ {
+ ctx.h_document_start = h_document_start;
+ ctx.h_document_end = h_document_end;
+ ctx.h_xml_decl = h_xml_decl;
+ ctx.h_doctype_decl = h_doctype_decl;
+ ctx.h_comment = h_comment;
+ ctx.h_pi = h_pi;
+ ctx.h_element_start = h_element_start;
+ ctx.h_element_end = h_element_end;
+ ctx.h_chars = h_chars;
+ }
+ if (want_pull)
+ ctx.want = XML_WANT_CHARS | XML_WANT_STAG | XML_WANT_ETAG | XML_WANT_COMMENT | XML_WANT_PI;
+ if (want_dom)
+ ctx.flags &= ~XML_DOM_FREE;
+ xml_set_source(&ctx, bfdopen_shared(0, 4096));
+ int state;
+ bprintf(out, "PULL: start\n");
+ while ((state = xml_next(&ctx)) >= 0 && state != XML_STATE_EOF)
+ switch (state)
+ {
+ case XML_STATE_CHARS:
+ bprintf(out, "PULL: chars");
+ show_node(ctx.node);
+ break;
+ case XML_STATE_STAG:
+ bprintf(out, "PULL: element_start");
+ show_node(ctx.node);
+ break;
+ case XML_STATE_ETAG:
+ bprintf(out, "PULL: element_end </%s>\n", ctx.node->name);
+ break;
+ case XML_STATE_COMMENT:
+ bprintf(out, "PULL: comment");
+ show_node(ctx.node);
+ break;
+ case XML_STATE_PI:
+ bprintf(out, "PULL: pi");
+ show_node(ctx.node);
+ break;
+#if 0
+ case XML_STATE_CDATA:
+ bprintf(out, "PULL: cdata [%s]\n", ctx.node->text);
+ break;
+#endif
+ }
+ if (state != XML_STATE_EOF)
+ bprintf(out, "PULL: fatal error\n");
+ else
+ bprintf(out, "PULL: eof\n");
+
+ if (want_dom)
+ show_tree(ctx.root, 0);
+
+ xml_cleanup(&ctx);
+ bclose(out);
+ return 0;
+}
+++ /dev/null
-/*
- * Sherlock Library -- A simple XML parser
- *
- * (c) 2007 Pavel Charvat <pchar@ucw.cz>
- *
- * This software may be freely distributed and used according to the terms
- * of the GNU Lesser General Public License.
- */
-
-/* TODO:
- * - iface
- * - stack-like memory handling where possible
- */
-
-#define LOCAL_DEBUG
-
-#include "lib/lib.h"
-#include "lib/mempool.h"
-#include "lib/fastbuf.h"
-#include "lib/ff-unicode.h"
-#include "lib/ff-binary.h"
-#include "lib/chartype.h"
-#include "lib/unicode.h"
-#include "lib/hashfunc.h"
-#include "lib/stkstring.h"
-#include "lib/unaligned.h"
-#include "charset/charconv.h"
-#include "charset/fb-charconv.h"
-#include "sherlock/xml/xml.h"
-#include "sherlock/xml/dtd.h"
-
-#include <setjmp.h>
-
-/*** Debugging ***/
-
-#ifdef LOCAL_DEBUG
-#define TRACE(c, f, p...) do { DBG("XML %u: " f, xml_row(c), ##p); } while(0)
-#else
-#define TRACE(c, f, p...) do {} while(0)
-#endif
-
-static uns xml_row(struct xml_context *ctx);
-
-/*** Error handling ***/
-
-static void NONRET
-xml_throw(struct xml_context *ctx)
-{
- ASSERT(ctx->err_code && ctx->throw_buf);
- longjmp(*(jmp_buf *)ctx->throw_buf, ctx->err_code);
-}
-
-static void
-xml_warn(struct xml_context *ctx, const char *format, ...)
-{
- if (ctx->h_warn)
- {
- va_list args;
- va_start(args, format);
- ctx->err_msg = stk_vprintf(format, args);
- ctx->err_code = XML_ERR_WARN;
- va_end(args);
- ctx->h_warn(ctx);
- ctx->err_msg = NULL;
- ctx->err_code = XML_ERR_OK;
- }
-}
-
-static void
-xml_error(struct xml_context *ctx, const char *format, ...)
-{
- if (ctx->h_error)
- {
- va_list args;
- va_start(args, format);
- ctx->err_msg = stk_vprintf(format, args);
- ctx->err_code = XML_ERR_ERROR;
- va_end(args);
- ctx->h_error(ctx);
- ctx->err_msg = NULL;
- ctx->err_code = XML_ERR_OK;
- }
-}
-
-static void NONRET
-xml_fatal(struct xml_context *ctx, const char *format, ...)
-{
- va_list args;
- va_start(args, format);
- ctx->err_msg = mp_vprintf(ctx->pool, format, args);
- ctx->err_code = XML_ERR_FATAL;
- ctx->state = XML_STATE_FATAL;
- va_end(args);
- if (ctx->h_fatal)
- ctx->h_fatal(ctx);
- xml_throw(ctx);
-}
-
-/*** Charecter categorization ***/
-
-#include "obj/sherlock/xml/unicat.h"
-
-static inline uns
-xml_char_cat(uns c)
-{
- if (c < 0x10000)
- return 1U << xml_char_tab2[(c & 0xff) + xml_char_tab1[c >> 8]];
- else if (likely(c < 0x110000))
- return 1U << xml_char_tab3[c >> 16];
- else
- return 1;
-}
-
-/*** Memory management ***/
-
-static void NONRET
-xml_fatal_nested(struct xml_context *ctx)
-{
- xml_fatal(ctx, "Entity not nested correctly");
-}
-
-static inline void
-xml_inc(struct xml_context *ctx)
-{
- /* Called after the first character of a block */
- TRACE(ctx, "inc");
- ctx->depth++;
-}
-
-static inline void
-xml_dec(struct xml_context *ctx)
-{
- /* Called after the last character of a block */
- TRACE(ctx, "dec");
- if (unlikely(!ctx->depth--))
- xml_fatal_nested(ctx);
-}
-
-static inline void
-xml_push(struct xml_context *ctx)
-{
- TRACE(ctx, "push");
- struct xml_stack *s = mp_alloc(ctx->pool, sizeof(*s));
- mp_save(ctx->pool, &s->saved_pool);
- s->saved_flags = ctx->flags;
- s->next = ctx->stack;
- ctx->stack = s;
- xml_inc(ctx);
-}
-
-static inline void
-xml_pop(struct xml_context *ctx)
-{
- TRACE(ctx, "pop");
- xml_dec(ctx);
- struct xml_stack *s = ctx->stack;
- ASSERT(s);
- ctx->stack = s->next;
- ctx->flags = s->saved_flags;
- mp_restore(ctx->pool, &s->saved_pool);
-}
-
-#define XML_HASH_HDR_SIZE ALIGN_TO(sizeof(void *), CPU_STRUCT_ALIGN)
-#define XML_HASH_GIVE_ALLOC struct HASH_PREFIX(table); \
- static inline void *HASH_PREFIX(alloc)(struct HASH_PREFIX(table) *t, uns size) \
- { return mp_alloc(*(void **)((void *)t - XML_HASH_HDR_SIZE), size); } \
- static inline void HASH_PREFIX(free)(struct HASH_PREFIX(table) *t UNUSED, void *p UNUSED) {}
-
-static void *
-xml_hash_new(struct mempool *pool, uns size)
-{
- void *tab = mp_alloc_zero(pool, size + XML_HASH_HDR_SIZE);
- *(void **)tab = pool;
- return tab + XML_HASH_HDR_SIZE;
-}
-
-/*** Reading of document/external entities ***/
-
-static void NONRET
-xml_eof(struct xml_context *ctx)
-{
- ctx->err_msg = "Unexpected EOF";
- ctx->err_code = XML_ERR_EOF;
- xml_throw(ctx);
-}
-
-static inline void
-xml_add_char(u32 **bstop, uns c)
-{
- *(*bstop)++ = c;
- *(*bstop)++ = xml_char_cat(c);
-}
-
-static struct xml_source *
-xml_push_source(struct xml_context *ctx, uns flags)
-{
- xml_push(ctx);
- struct xml_source *src = ctx->src;
- if (src)
- {
- src->bptr = ctx->bptr;
- src->bstop = ctx->bstop;
- }
- src = mp_alloc_zero(ctx->pool, sizeof(*src));
- src->next = ctx->src;
- src->saved_depth = ctx->depth;
- ctx->src = src;
- ctx->flags = (ctx->flags & ~(XML_FLAG_SRC_EOF | XML_FLAG_SRC_EXPECTED_DECL | XML_FLAG_SRC_NEW_LINE | XML_FLAG_SRC_SURROUND | XML_FLAG_SRC_DOCUMENT)) | flags;
- ctx->bstop = ctx->bptr = src->buf;
- ctx->depth = 0;
- if (flags & XML_FLAG_SRC_SURROUND)
- xml_add_char(&ctx->bstop, 0x20);
- return src;
-}
-
-static void
-xml_pop_source(struct xml_context *ctx)
-{
- TRACE(ctx, "xml_pop_source");
- if (unlikely(ctx->depth != 0))
- xml_fatal_nested(ctx);
- struct xml_source *src = ctx->src;
- ASSERT(src);
- bclose(src->fb);
- ctx->depth = src->saved_depth;
- ctx->src = src = src->next;
- if (src)
- {
- ctx->bptr = src->bptr;
- ctx->bstop = src->bstop;
- }
- xml_pop(ctx);
- if (unlikely(!src))
- xml_eof(ctx);
-}
-
-static void xml_refill_utf8(struct xml_context *ctx);
-
-static void
-xml_push_entity(struct xml_context *ctx, struct xml_dtd_ent *ent)
-{
- TRACE(ctx, "xml_push_entity");
- uns cat1 = ctx->src->refill_cat1;
- uns cat2 = ctx->src->refill_cat2;
- struct xml_source *src = xml_push_source(ctx, 0);
- src->refill_cat1 = cat1;
- src->refill_cat2 = cat2;
- if (ent->flags & XML_DTD_ENT_EXTERNAL)
- xml_fatal(ctx, "External entities not implemented"); // FIXME
- else
- {
- fbbuf_init_read(src->fb = &src->wrap_fb, ent->text, ent->len, 0);
- src->refill = xml_refill_utf8;
- }
-}
-
-void
-xml_set_source(struct xml_context *ctx, struct fastbuf *fb)
-{
- TRACE(ctx, "xml_set_source");
- ASSERT(!ctx->src);
- struct xml_source *src = xml_push_source(ctx, XML_FLAG_SRC_DOCUMENT | XML_FLAG_SRC_EXPECTED_DECL);
- src->fb = fb;
-}
-
-static uns
-xml_error_restricted(struct xml_context *ctx, uns c)
-{
- if (c == ~1U)
- xml_error(ctx, "Corrupted encoding");
- else
- xml_error(ctx, "Restricted char U+%04X", c);
- return UNI_REPLACEMENT;
-}
-
-static void xml_parse_decl(struct xml_context *ctx);
-
-#define REFILL(ctx, func, params...) \
- struct xml_source *src = ctx->src; \
- struct fastbuf *fb = src->fb; \
- if (ctx->bptr == ctx->bstop) \
- ctx->bptr = ctx->bstop = src->buf; \
- uns f = ctx->flags, c, t1 = src->refill_cat1, t2 = src->refill_cat2, row = src->row; \
- u32 *bend = src->buf + ARRAY_SIZE(src->buf), *bstop = ctx->bstop, \
- *last_0xd = (f & XML_FLAG_SRC_NEW_LINE) ? bstop : bend; \
- do \
- { \
- c = func(fb, ##params); \
- uns t = xml_char_cat(c); \
- if (t & t1) \
- /* Typical branch */ \
- *bstop++ = c, *bstop++ = t; \
- else if (t & t2) \
- { \
- /* New line */ \
- /* XML 1.0: 0xA | 0xD | 0xD 0xA */ \
- /* XML 1.1: 0xA | 0xD | 0xD 0xA | 0x85 | 0xD 0x85 | 0x2028 */ \
- if (c == 0xd) \
- last_0xd = bstop + 2; \
- else if (c != 0x2028 && last_0xd == bstop) \
- { \
- last_0xd = bend; \
- continue; \
- } \
- xml_add_char(&bstop, 0xa), row++; \
- } \
- else if (c == '>') \
- { \
- /* Used only in XML/TextDecl to switch the encoding */ \
- *bstop++ = c, *bstop++ = t; \
- break; \
- } \
- else if (~c) \
- /* Restricted character */ \
- xml_add_char(&bstop, xml_error_restricted(ctx, c)); \
- else \
- { \
- /* EOF */ \
- if (f & XML_FLAG_SRC_SURROUND) \
- xml_add_char(&bstop, 0x20); \
- f |= XML_FLAG_SRC_EOF; \
- break; \
- } \
- } \
- while (bstop < bend); \
- ctx->flags = (last_0xd == bstop) ? f | XML_FLAG_SRC_NEW_LINE : f & ~XML_FLAG_SRC_NEW_LINE; \
- ctx->bstop = bstop; \
- src->row = row;
-
-static void
-xml_refill_utf8(struct xml_context *ctx)
-{
- REFILL(ctx, bget_utf8_repl, ~1U);
-}
-
-static void
-xml_refill_utf16_le(struct xml_context *ctx)
-{
- REFILL(ctx, bget_utf16_le_repl, ~1U);
-}
-
-static void
-xml_refill_utf16_be(struct xml_context *ctx)
-{
- REFILL(ctx, bget_utf16_be_repl, ~1U);
-}
-
-#if 0
-static inline uns
-xml_refill_libcharset_bget(struct fastbuf *fb, unsigned short int *in_to_x)
-{
- // FIXME: slow
- int c;
- return (unlikely(c = bgetc(fb) < 0)) ? c : (int)conv_x_to_ucs(in_to_x[c]);
-}
-
-static void
-xml_refill_libcharset(struct xml_context *ctx)
-{
- unsigned short int *in_to_x = ctx->src->refill_in_to_x;
- REFILL(ctx, xml_refill_libcharset_bget, in_to_x);
-}
-#endif
-
-#undef REFILL
-
-static void
-xml_refill(struct xml_context *ctx)
-{
- do
- {
- if (ctx->flags & XML_FLAG_SRC_EOF)
- xml_pop_source(ctx);
- else if (ctx->flags & XML_FLAG_SRC_EXPECTED_DECL)
- xml_parse_decl(ctx);
- else
- {
- ctx->src->refill(ctx);
- TRACE(ctx, "refilled %u characters", (uns)((ctx->bstop - ctx->bptr) / 2));
- }
- }
- while (ctx->bptr == ctx->bstop);
-}
-
-static inline uns
-xml_peek_char(struct xml_context *ctx)
-{
- if (ctx->bptr == ctx->bstop)
- xml_refill(ctx);
- return ctx->bptr[0];
-}
-
-static inline uns
-xml_peek_cat(struct xml_context *ctx)
-{
- if (ctx->bptr == ctx->bstop)
- xml_refill(ctx);
- return ctx->bptr[1];
-}
-
-static inline uns
-xml_get_char(struct xml_context *ctx)
-{
- uns c = xml_peek_char(ctx);
- ctx->bptr += 2;
- return c;
-}
-
-static inline uns
-xml_get_cat(struct xml_context *ctx)
-{
- uns c = xml_peek_cat(ctx);
- ctx->bptr += 2;
- return c;
-}
-
-static inline uns
-xml_last_char(struct xml_context *ctx)
-{
- return ctx->bptr[-2];
-}
-
-static inline uns
-xml_last_cat(struct xml_context *ctx)
-{
- return ctx->bptr[-1];
-}
-
-static inline uns
-xml_skip_char(struct xml_context *ctx)
-{
- uns c = ctx->bptr[0];
- ctx->bptr += 2;
- return c;
-}
-
-static inline uns
-xml_unget_char(struct xml_context *ctx)
-{
- return *(ctx->bptr -= 2);
-}
-
-static uns
-xml_row(struct xml_context *ctx)
-{
- struct xml_source *src = ctx->src;
- if (!src)
- return 0;
- uns row = src->row;
- for (u32 *p = ctx->bstop; p != ctx->bptr; p -= 2)
- if (p[-1] & src->refill_cat2)
- row--;
- return row + 1;
-}
-
-/*** Basic parsing ***/
-
-static void NONRET
-xml_fatal_expected(struct xml_context *ctx, uns c)
-{
- xml_fatal(ctx, "Expected '%c'", c);
-}
-
-static void NONRET
-xml_fatal_expected_white(struct xml_context *ctx)
-{
- xml_fatal(ctx, "Expected a white space");
-}
-
-static void NONRET
-xml_fatal_expected_quot(struct xml_context *ctx)
-{
- xml_fatal(ctx, "Expected a quotation mark");
-}
-
-static inline uns
-xml_parse_white(struct xml_context *ctx, uns mandatory)
-{
- /* mandatory=1 -> S ::= (#x20 | #x9 | #xD | #xA)+
- * mandatory=0 -> S? */
- uns cnt = 0;
- while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
- {
- xml_skip_char(ctx);
- cnt++;
- }
- if (unlikely(mandatory && !cnt))
- xml_fatal_expected_white(ctx);
- return cnt;
-}
-
-static inline void
-xml_parse_char(struct xml_context *ctx, uns c)
-{
- /* Consumes a given Unicode character */
- if (unlikely(c != xml_get_char(ctx)))
- xml_fatal_expected(ctx, c);
-}
-
-static inline void
-xml_parse_seq(struct xml_context *ctx, const char *seq)
-{
- /* Consumes a given sequence of ASCII characters */
- while (*seq)
- xml_parse_char(ctx, *seq++);
-}
-
-static void
-xml_parse_eq(struct xml_context *ctx)
-{
- /* Eq ::= S? '=' S? */
- xml_parse_white(ctx, 0);
- xml_parse_char(ctx, '=');
- xml_parse_white(ctx, 0);
-}
-
-static inline uns
-xml_parse_quote(struct xml_context *ctx)
-{
- /* "'" | '"' */
- uns c = xml_get_char(ctx);
- if (unlikely(c != '\'' && c != '\"'))
- xml_fatal_expected_quot(ctx);
- return c;
-}
-
-/* Names and nmtokens */
-
-static char *
-xml_parse_string(struct xml_context *ctx, uns first_cat, uns next_cat, char *err)
-{
- char *p = mp_start_noalign(ctx->pool, 1);
- if (unlikely(!(xml_peek_cat(ctx) & first_cat)))
- xml_fatal(ctx, "%s", err);
- do
- {
- p = mp_spread(ctx->pool, p, 5);
- p = utf8_32_put(p, xml_skip_char(ctx));
- }
- while (xml_peek_cat(ctx) & next_cat);
- *p++ = 0;
- return mp_end(ctx->pool, p);
-}
-
-static void
-xml_skip_string(struct xml_context *ctx, uns first_cat, uns next_cat, char *err)
-{
- if (unlikely(!(xml_get_cat(ctx) & first_cat)))
- xml_fatal(ctx, "%s", err);
- while (xml_peek_cat(ctx) & next_cat)
- xml_skip_char(ctx);
-}
-
-static char *
-xml_parse_name(struct xml_context *ctx)
-{
- /* Name ::= NameStartChar (NameChar)* */
- return xml_parse_string(ctx,
- !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_SNAME_1_0 : XML_CHAR_SNAME_1_1,
- !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1,
- "Expected a name");
-}
-
-static void
-xml_skip_name(struct xml_context *ctx)
-{
- xml_skip_string(ctx,
- !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_SNAME_1_0 : XML_CHAR_SNAME_1_1,
- !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1,
- "Expected a name");
-}
-
-static char *
-xml_parse_nmtoken(struct xml_context *ctx)
-{
- /* Nmtoken ::= (NameChar)+ */
- uns cat = !(ctx->flags & XML_FLAG_VERSION_1_1) ? XML_CHAR_NAME_1_0 : XML_CHAR_NAME_1_1;
- return xml_parse_string(ctx, cat, cat, "Expected a nmtoken");
-}
-
-/* Simple literals */
-
-static char *
-xml_parse_system_literal(struct xml_context *ctx)
-{
- /* SystemLiteral ::= ('"' [^"]* '"') | ("'" [^']* "'") */
- char *p = mp_start_noalign(ctx->pool, 1);
- uns q = xml_parse_quote(ctx), c;
- while ((c = xml_get_char(ctx)) != q)
- {
- p = mp_spread(ctx->pool, p, 5);
- p = utf8_32_put(p, c);
- }
- *p++ = 0;
- return mp_end(ctx->pool, p);
-}
-
-static char *
-xml_parse_pubid_literal(struct xml_context *ctx)
-{
- /* PubidLiteral ::= '"' PubidChar* '"' | "'" (PubidChar - "'")* "'" */
- char *p = mp_start_noalign(ctx->pool, 1);
- uns q = xml_parse_quote(ctx), c;
- while ((c = xml_get_char(ctx)) != q)
- {
- if (unlikely(!(xml_last_cat(ctx) & XML_CHAR_PUBID)))
- xml_fatal(ctx, "Expected a pubid character");
- p = mp_spread(ctx->pool, p, 2);
- *p++ = c;
- }
- *p++ = 0;
- return mp_end(ctx->pool, p);
-}
-
-static char *
-xml_parse_encoding_name(struct xml_context *ctx)
-{
- /* EncName ::= '"' [A-Za-z] ([A-Za-z0-9._] | '-')* '"' | "'" [A-Za-z] ([A-Za-z0-9._] | '-')* "'" */
- char *p = mp_start_noalign(ctx->pool, 1);
- uns q = xml_parse_quote(ctx);
- if (unlikely(!(xml_get_cat(ctx) & XML_CHAR_ENC_SNAME)))
- xml_fatal(ctx, "Invalid character in the encoding name");
- while (1)
- {
- p = mp_spread(ctx->pool, p, 2);
- *p++ = xml_last_char(ctx);
- if (xml_get_char(ctx) == q)
- break;
- if (unlikely(!(xml_last_cat(ctx) & XML_CHAR_ENC_NAME)))
- xml_fatal(ctx, "Invalid character in the encoding name");
- }
- *p++ = 0;
- return mp_end(ctx->pool, p);
-}
-
-/* Document/external entity header */
-
-static inline void
-xml_init_cats(struct xml_context *ctx, uns mask)
-{
- if (!(ctx->flags & XML_FLAG_VERSION_1_1))
- {
- ctx->src->refill_cat1 = XML_CHAR_VALID_1_0 & ~XML_CHAR_NEW_LINE_1_0 & ~mask;
- ctx->src->refill_cat2 = XML_CHAR_NEW_LINE_1_0;
- }
- else
- {
- ctx->src->refill_cat1 = XML_CHAR_UNRESTRICTED_1_1 & ~XML_CHAR_NEW_LINE_1_1 & ~mask;
- ctx->src->refill_cat2 = XML_CHAR_NEW_LINE_1_1;
- }
-}
-
-static void
-xml_init_charconv(struct xml_context *ctx, int cs)
-{
- // FIXME: hack
- struct xml_source *src = ctx->src;
- TRACE(ctx, "wrapping charset %s", charset_name(cs));
-#if 0
- struct conv_context conv;
- conv_set_charset(&conv, cs, CONV_CHARSET_UTF8);
- src->refill = xml_refill_libcharset;
- src->refill_in_to_x = conv.in_to_x;
-#else
- src->fb = fb_wrap_charconv_in(src->fb, cs, CONV_CHARSET_UTF8);
- // FIXME: memory leak
-#endif
-}
-
-static void
-xml_parse_decl(struct xml_context *ctx)
-{
- TRACE(ctx, "xml_parse_decl");
- struct xml_source *src = ctx->src;
- ctx->flags &= ~XML_FLAG_SRC_EXPECTED_DECL;
-
- /* Setup valid Unicode ranges and force the reader to abort refill() after each '>', where we can switch encoding or XML version */
- xml_init_cats(ctx, XML_CHAR_GT);
-
- /* Initialize the supplied charset (if any) or try to guess it */
- char *expected_encoding = src->expected_encoding ? : src->fb_encoding;
- src->refill = xml_refill_utf8;
- int bom = bpeekc(src->fb);
- if (bom < 0)
- ctx->flags |= XML_FLAG_SRC_EOF;
- if (!src->fb_encoding)
- {
- if (bom == 0xfe)
- src->refill = xml_refill_utf16_be;
- else if (bom == 0xff)
- src->refill = xml_refill_utf16_le;
- }
- else
- {
- int cs = find_charset_by_name(src->fb_encoding);
- if (cs == CONV_CHARSET_UTF8)
- {}
- else if (cs >= 0)
- {
- xml_init_charconv(ctx, cs);
- bom = 0;
- }
- else if (strcasecmp(src->fb_encoding, "UTF-16"))
- {
- src->refill = xml_refill_utf16_be;
- if (bom == 0xff)
- src->refill = xml_refill_utf16_le;
- if (!src->expected_encoding)
- expected_encoding = (bom == 0xff) ? "UTF-16LE" : "UTF-16BE";
- }
- else if (strcasecmp(src->fb_encoding, "UTF-16BE"))
- src->refill = xml_refill_utf16_be;
- else if (strcasecmp(src->fb_encoding, "UTF-16LE"))
- src->refill = xml_refill_utf16_le;
- else
- {
- xml_error(ctx, "Unknown encoding '%s'", src->fb_encoding);
- expected_encoding = NULL;
- }
- }
- uns utf16 = src->refill == xml_refill_utf16_le || src->refill == xml_refill_utf16_be;
- if (bom > 0 && xml_peek_char(ctx) == 0xfeff)
- xml_skip_char(ctx);
- else if (utf16)
- xml_error(ctx, "Missing or corrupted BOM");
-
- /* Look ahead for presence of XMLDecl or optional TextDecl */
- if (!(ctx->flags & XML_FLAG_SRC_EOF) && ctx->bstop != src->buf + ARRAY_SIZE(src->buf))
- xml_refill(ctx);
- uns doc = ctx->flags & XML_FLAG_SRC_DOCUMENT;
- u32 *bptr = ctx->bptr;
- uns have_decl = (12 <= ctx->bstop - ctx->bptr && (bptr[11] & XML_CHAR_WHITE) &&
- bptr[0] == '<' && bptr[2] == '?' && (bptr[4] & 0xdf) == 'X' && (bptr[6] & 0xdf) == 'M' && (bptr[8] & 0xdf) == 'L');
- if (!have_decl)
- {
- if (doc)
- xml_fatal(ctx, "Missing or corrupted XML header");
- else if (expected_encoding && strcasecmp(src->expected_encoding, "UTF-8") && !utf16)
- xml_error(ctx, "Missing or corrupted entity header");
- goto exit;
- }
- ctx->bptr = bptr + 12;
- xml_parse_white(ctx, 0);
-
- /* Parse version string (mandatory in XMLDecl, optional in TextDecl) */
- if (xml_peek_char(ctx) == 'v')
- {
- xml_parse_seq(ctx, "version");
- xml_parse_eq(ctx);
- char *version = xml_parse_pubid_literal(ctx);
- TRACE(ctx, "version=%s", version);
- uns v = 0;
- if (!strcmp(version, "1.1"))
- v = XML_FLAG_VERSION_1_1;
- else if (strcmp(version, "1.0"))
- {
- xml_error(ctx, "Unknown XML version string '%s'", version);
- version = "1.0";
- }
- if (doc)
- {
- ctx->version_str = version;
- ctx->flags |= v;
- }
- else if (v > (ctx->flags & XML_FLAG_VERSION_1_1))
- xml_error(ctx, "XML 1.1 external entity included from XML 1.0 document");
- if (!xml_parse_white(ctx, !doc))
- goto end;
- }
- else if (doc)
- {
- xml_error(ctx, "Expected XML version");
- ctx->version_str = "1.0";
- }
-
- /* Parse encoding string (optional in XMLDecl, mandatory in TextDecl) */
- if (xml_peek_char(ctx) == 'e')
- {
- xml_parse_seq(ctx, "encoding");
- xml_parse_eq(ctx);
- src->decl_encoding = xml_parse_encoding_name(ctx);
- TRACE(ctx, "encoding=%s", src->decl_encoding);
- if (!xml_parse_white(ctx, 0))
- goto end;
- }
- else if (!doc)
- xml_error(ctx, "Expected XML encoding");
-
- /* Parse whether the document is standalone (optional in XMLDecl) */
- if (doc && xml_peek_char(ctx) == 's')
- {
- xml_parse_seq(ctx, "standalone");
- xml_parse_eq(ctx);
- uns c = xml_parse_quote(ctx);
- if (ctx->standalone = (xml_peek_char(ctx) == 'y'))
- xml_parse_seq(ctx, "yes");
- else
- xml_parse_seq(ctx, "no");
- xml_parse_char(ctx, c);
- TRACE(ctx, "standalone=%d", ctx->standalone);
- xml_parse_white(ctx, 0);
- }
-end:
- xml_parse_seq(ctx, "?>");
-
- /* Switch to the final encoding */
- if (src->decl_encoding)
- {
- int cs = find_charset_by_name(src->decl_encoding);
- if (cs < 0 && !expected_encoding)
- xml_error(ctx, "Unknown encoding '%s'", src->decl_encoding);
- else if (!src->fb_encoding && cs >= 0 && cs != CONV_CHARSET_UTF8)
- xml_init_charconv(ctx, cs);
- else if (expected_encoding && strcasecmp(src->decl_encoding, expected_encoding) && (!utf16 ||
- !(!strcasecmp(src->decl_encoding, "UTF-16") ||
- (!strcasecmp(src->decl_encoding, "UTF-16BE") && strcasecmp(expected_encoding, "UTF-16LE")) ||
- (!strcasecmp(src->decl_encoding, "UTF-16LE") && strcasecmp(expected_encoding, "UTF-16BE")))))
- xml_error(ctx, "The header contains encoding '%s' instead of expected '%s'", src->decl_encoding, expected_encoding);
- }
-
-exit:
- /* Update valid Unicode ranges */
- xml_init_cats(ctx, 0);
-}
-
-/*** Document Type Definition (DTD) ***/
-
-/* Notations */
-
-#define HASH_PREFIX(x) xml_dtd_notns_##x
-#define HASH_NODE struct xml_dtd_notn
-#define HASH_KEY_STRING name
-#define HASH_ZERO_FILL
-#define HASH_TABLE_DYNAMIC
-#define HASH_WANT_FIND
-#define HASH_WANT_LOOKUP
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* General entities */
-
-#define HASH_PREFIX(x) xml_dtd_ents_##x
-#define HASH_NODE struct xml_dtd_ent
-#define HASH_KEY_STRING name
-#define HASH_ZERO_FILL
-#define HASH_TABLE_DYNAMIC
-#define HASH_WANT_FIND
-#define HASH_WANT_LOOKUP
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-static struct xml_dtd_ent *
-xml_dtd_declare_trivial_gent(struct xml_context *ctx, char *name, char *text)
-{
- struct xml_dtd *dtd = ctx->dtd;
- struct xml_dtd_ent *ent = xml_dtd_ents_lookup(dtd->tab_gents, name);
- if (ent->flags & XML_DTD_ENT_DECLARED)
- {
- xml_warn(ctx, "Entity &%s; already declared", name);
- return NULL;
- }
- slist_add_tail(&dtd->gents, &ent->n);
- ent->flags = XML_DTD_ENT_DECLARED | XML_DTD_ENT_TRIVIAL;
- ent->text = text;
- ent->len = strlen(text);
- return ent;
-}
-
-static void
-xml_dtd_declare_default_gents(struct xml_context *ctx)
-{
- xml_dtd_declare_trivial_gent(ctx, "lt", "<");
- xml_dtd_declare_trivial_gent(ctx, "gt", ">");
- xml_dtd_declare_trivial_gent(ctx, "amp", "&");
- xml_dtd_declare_trivial_gent(ctx, "apos", "'");
- xml_dtd_declare_trivial_gent(ctx, "quot", "\"");
-}
-
-static struct xml_dtd_ent *
-xml_dtd_find_gent(struct xml_context *ctx, char *name)
-{
- struct xml_dtd *dtd = ctx->dtd;
- if (dtd)
- {
- struct xml_dtd_ent *ent = xml_dtd_ents_find(dtd->tab_gents, name);
- return !ent ? NULL : (ent->flags & XML_DTD_ENT_DECLARED) ? ent : NULL;
- }
- else
- {
-#define ENT(n, t) ent_##n = { .name = #n, .text = t, .len = 1, .flags = XML_DTD_ENT_DECLARED | XML_DTD_ENT_TRIVIAL }
- static struct xml_dtd_ent ENT(lt, "<"), ENT(gt, ">"), ENT(amp, "&"), ENT(apos, "'"), ENT(quot, "\"");
-#undef ENT
- switch (name[0])
- {
- case 'l':
- if (!strcmp(name, "lt"))
- return &ent_lt;
- break;
- case 'g':
- if (!strcmp(name, "gt"))
- return &ent_gt;
- break;
- case 'a':
- if (!strcmp(name, "amp"))
- return &ent_amp;
- if (!strcmp(name, "apos"))
- return &ent_apos;
- break;
- case 'q':
- if (!strcmp(name, "quot"))
- return &ent_quot;
- break;
- }
- return NULL;
- }
-}
-
-/* Parameter entities */
-
-static struct xml_dtd_ent *
-xml_dtd_find_pent(struct xml_context *ctx, char *name)
-{
- struct xml_dtd *dtd = ctx->dtd;
- struct xml_dtd_ent *ent = xml_dtd_ents_find(dtd->tab_pents, name);
- return !ent ? NULL : (ent->flags & XML_DTD_ENT_DECLARED) ? ent : NULL;
-}
-
-/* Elements */
-
-#define HASH_PREFIX(x) xml_dtd_elems_##x
-#define HASH_NODE struct xml_dtd_elem
-#define HASH_KEY_STRING name
-#define HASH_TABLE_DYNAMIC
-#define HASH_ZERO_FILL
-#define HASH_WANT_LOOKUP
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* Element sons */
-
-struct xml_dtd_enodes_table;
-
-static inline uns
-xml_dtd_enodes_hash(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem)
-{
- return hash_pointer(parent) ^ hash_pointer(elem);
-}
-
-static inline int
-xml_dtd_enodes_eq(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *parent1, struct xml_dtd_elem *elem1, struct xml_dtd_elem_node *parent2, struct xml_dtd_elem *elem2)
-{
- return (parent1 == parent2) && (elem1 == elem2);
-}
-
-static inline void
-xml_dtd_enodes_init_key(struct xml_dtd_enodes_table *tab UNUSED, struct xml_dtd_elem_node *node, struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem)
-{
- node->parent = parent;
- node->elem = elem;
-}
-
-#define HASH_PREFIX(x) xml_dtd_enodes_##x
-#define HASH_NODE struct xml_dtd_elem_node
-#define HASH_KEY_COMPLEX(x) x parent, x elem
-#define HASH_KEY_DECL struct xml_dtd_elem_node *parent, struct xml_dtd_elem *elem
-#define HASH_GIVE_HASHFN
-#define HASH_GIVE_EQ
-#define HASH_GIVE_INIT_KEY
-#define HASH_TABLE_DYNAMIC
-#define HASH_ZERO_FILL
-#define HASH_WANT_FIND
-#define HASH_WANT_NEW
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* Element attributes */
-
-struct xml_dtd_attrs_table;
-
-static inline uns
-xml_dtd_attrs_hash(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_elem *elem, char *name)
-{
- return hash_pointer(elem) ^ hash_string(name);
-}
-
-static inline int
-xml_dtd_attrs_eq(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_elem *elem1, char *name1, struct xml_dtd_elem *elem2, char *name2)
-{
- return (elem1 == elem2) && !strcmp(name1, name2);
-}
-
-static inline void
-xml_dtd_attrs_init_key(struct xml_dtd_attrs_table *tab UNUSED, struct xml_dtd_attr *attr, struct xml_dtd_elem *elem, char *name)
-{
- attr->elem = elem;
- attr->name = name;
-}
-
-#define HASH_PREFIX(x) xml_dtd_attrs_##x
-#define HASH_NODE struct xml_dtd_attr
-#define HASH_ZERO_FILL
-#define HASH_TABLE_DYNAMIC
-#define HASH_KEY_COMPLEX(x) x elem, x name
-#define HASH_KEY_DECL struct xml_dtd_elem *elem, char *name
-#define HASH_GIVE_HASHFN
-#define HASH_GIVE_EQ
-#define HASH_GIVE_INIT_KEY
-#define HASH_WANT_FIND
-#define HASH_WANT_NEW
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* Enumerated attribute values */
-
-struct xml_dtd_evals_table;
-
-static inline uns
-xml_dtd_evals_hash(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_attr *attr, char *val)
-{
- return hash_pointer(attr) ^ hash_string(val);
-}
-
-static inline int
-xml_dtd_evals_eq(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_attr *attr1, char *val1, struct xml_dtd_attr *attr2, char *val2)
-{
- return (attr1 == attr2) && !strcmp(val1, val2);
-}
-
-static inline void
-xml_dtd_evals_init_key(struct xml_dtd_evals_table *tab UNUSED, struct xml_dtd_eval *eval, struct xml_dtd_attr *attr, char *val)
-{
- eval->attr = attr;
- eval->val = val;
-}
-
-#define HASH_PREFIX(x) xml_dtd_evals_##x
-#define HASH_NODE struct xml_dtd_eval
-#define HASH_TABLE_DYNAMIC
-#define HASH_KEY_COMPLEX(x) x attr, x val
-#define HASH_KEY_DECL struct xml_dtd_attr *attr, char *val
-#define HASH_GIVE_HASHFN
-#define HASH_GIVE_EQ
-#define HASH_GIVE_INIT_KEY
-#define HASH_WANT_FIND
-#define HASH_WANT_NEW
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* Enumerated attribute notations */
-
-struct xml_dtd_enotns_table;
-
-static inline uns
-xml_dtd_enotns_hash(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_attr *attr, struct xml_dtd_notn *notn)
-{
- return hash_pointer(attr) ^ hash_pointer(notn);
-}
-
-static inline int
-xml_dtd_enotns_eq(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_attr *attr1, struct xml_dtd_notn *notn1, struct xml_dtd_attr *attr2, struct xml_dtd_notn *notn2)
-{
- return (attr1 == attr2) && (notn1 == notn2);
-}
-
-static inline void
-xml_dtd_enotns_init_key(struct xml_dtd_enotns_table *tab UNUSED, struct xml_dtd_enotn *enotn, struct xml_dtd_attr *attr, struct xml_dtd_notn *notn)
-{
- enotn->attr = attr;
- enotn->notn = notn;
-}
-
-#define HASH_PREFIX(x) xml_dtd_enotns_##x
-#define HASH_NODE struct xml_dtd_enotn
-#define HASH_TABLE_DYNAMIC
-#define HASH_KEY_COMPLEX(x) x attr, x notn
-#define HASH_KEY_DECL struct xml_dtd_attr *attr, struct xml_dtd_notn *notn
-#define HASH_GIVE_HASHFN
-#define HASH_GIVE_EQ
-#define HASH_GIVE_INIT_KEY
-#define HASH_WANT_FIND
-#define HASH_WANT_NEW
-#define HASH_GIVE_ALLOC
-#define HASH_TABLE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-/* DTD initialization/cleanup */
-
-static void
-xml_dtd_init(struct xml_context *ctx)
-{
- if (ctx->dtd)
- return;
- struct mempool *pool = mp_new(4096);
- struct xml_dtd *dtd = ctx->dtd = mp_alloc_zero(pool, sizeof(*ctx->dtd));
- dtd->pool = pool;
- xml_dtd_ents_init(dtd->tab_gents = xml_hash_new(pool, sizeof(struct xml_dtd_ents_table)));
- xml_dtd_ents_init(dtd->tab_pents = xml_hash_new(pool, sizeof(struct xml_dtd_ents_table)));
- xml_dtd_notns_init(dtd->tab_notns = xml_hash_new(pool, sizeof(struct xml_dtd_notns_table)));
- xml_dtd_elems_init(dtd->tab_elems = xml_hash_new(pool, sizeof(struct xml_dtd_elems_table)));
- xml_dtd_enodes_init(dtd->tab_enodes = xml_hash_new(pool, sizeof(struct xml_dtd_enodes_table)));
- xml_dtd_attrs_init(dtd->tab_attrs = xml_hash_new(pool, sizeof(struct xml_dtd_attrs_table)));
- xml_dtd_evals_init(dtd->tab_evals = xml_hash_new(pool, sizeof(struct xml_dtd_evals_table)));
- xml_dtd_enotns_init(dtd->tab_enotns = xml_hash_new(pool, sizeof(struct xml_dtd_enotns_table)));
- xml_dtd_declare_default_gents(ctx);
-}
-
-static void
-xml_dtd_cleanup(struct xml_context *ctx)
-{
- if (!ctx->dtd)
- return;
- mp_delete(ctx->dtd->pool);
- ctx->dtd = NULL;
-}
-
-static void
-xml_dtd_finish(struct xml_context *ctx)
-{
- if (!ctx->dtd)
- return;
- // FIXME
-}
-
-/*** Parsing functions ***/
-
-/* Comments */
-
-static void
-xml_push_comment(struct xml_context *ctx)
-{
- /* Parse a comment to ctx->value:
- * Comment ::= '<!--' ((Char - '-') | ('-' (Char - '-')))* '-->'
- * Already parsed: '<!-' */
- struct fastbuf *out = ctx->value;
- uns c;
- xml_parse_char(ctx, '-');
- while (1)
- {
- if ((c = xml_get_char(ctx)) == '-')
- if ((c = xml_get_char(ctx)) == '-')
- break;
- else
- bputc(out, '-');
- bput_utf8_32(out, c);
- }
- xml_parse_char(ctx, '>');
- xml_dec(ctx);
- fbgrow_rewind(out);
- if (ctx->h_comment)
- ctx->h_comment(ctx);
-}
-
-static void
-xml_pop_comment(struct xml_context *ctx)
-{
- fbgrow_rewind(ctx->value);
-}
-
-static void
-xml_skip_comment(struct xml_context *ctx)
-{
- xml_parse_char(ctx, '-');
- while (xml_get_char(ctx) != '-' || xml_get_char(ctx) != '-');
- xml_parse_char(ctx, '>');
- xml_dec(ctx);
-}
-
-/* Processing instructions */
-
-static void
-xml_push_pi(struct xml_context *ctx)
-{
- /* Parses a PI to ctx->value and ctx->name:
- * PI ::= '<?' PITarget (S (Char* - (Char* '?>' Char*)))? '?>'
- * PITarget ::= Name - (('X' | 'x') ('M' | 'm') ('L' | 'l'))
- * Already parsed: '<?' */
-
- ctx->name = xml_parse_name(ctx);
- if (unlikely(!strcasecmp(ctx->name, "xml")))
- xml_fatal(ctx, "Reserved PI target");
- struct fastbuf *out = ctx->value;
- if (xml_parse_white(ctx, 0))
- xml_parse_seq(ctx, "?>");
- else
- {
- while (1)
- {
- uns c;
- if ((c = xml_get_char(ctx)) == '?')
- if (xml_get_char(ctx) == '>')
- break;
- else
- {
- xml_unget_char(ctx);
- bputc(out, '?');
- }
- else
- bput_utf8_32(out, c);
- }
- fbgrow_rewind(out);
- }
- xml_dec(ctx);
- if (ctx->h_pi)
- ctx->h_pi(ctx);
-}
-
-static void
-xml_pop_pi(struct xml_context *ctx)
-{
- fbgrow_reset(ctx->value);
-}
-
-static void
-xml_skip_pi(struct xml_context *ctx)
-{
- if (ctx->flags & XML_FLAG_VALIDATING)
- {
- mp_push(ctx->pool);
- if (unlikely(!strcasecmp(xml_parse_name(ctx), "xml")))
- xml_fatal(ctx, "Reserved PI target");
- mp_pop(ctx->pool);
- if (!xml_parse_white(ctx, 0))
- {
- xml_parse_seq(ctx, "?>");
- xml_dec(ctx);
- return;
- }
- }
- while (1)
- if (xml_get_char(ctx) == '?')
- if (xml_get_char(ctx) == '>')
- break;
- else
- xml_unget_char(ctx);
- xml_dec(ctx);
-}
-
-/* Character references */
-
-static uns
-xml_parse_char_ref(struct xml_context *ctx)
-{
- TRACE(ctx, "parse_char_ref");
- /* CharRef ::= '&#' [0-9]+ ';' | '&#x' [0-9a-fA-F]+ ';'
- * Already parsed: '&#' */
- uns v = 0;
- if (xml_get_char(ctx) == 'x')
- {
- if (!(xml_get_cat(ctx) & XML_CHAR_XDIGIT))
- {
- xml_error(ctx, "Expected a hexadecimal value of character reference");
- goto recover;
- }
- do
- {
- v = (v << 4) + Cxvalue(xml_last_char(ctx));
- }
- while (v < 0x110000 && (xml_get_cat(ctx) & XML_CHAR_XDIGIT));
- }
- else
- {
- if (!(xml_last_cat(ctx) & XML_CHAR_DIGIT))
- {
- xml_error(ctx, "Expected a numeric value of character reference");
- goto recover;
- }
- do
- {
- v = v * 10 + xml_last_char(ctx) - '0';
- }
- while (v < 0x110000 && (xml_get_cat(ctx) & XML_CHAR_DIGIT));
- }
- uns cat = xml_char_cat(v);
- if (!(cat & XML_CHAR_UNRESTRICTED_1_1) && ((ctx->flags & XML_FLAG_VERSION_1_1) || !(cat & XML_CHAR_VALID_1_0)))
- {
- xml_error(ctx, "Character reference out of range");
- goto recover;
- }
- if (xml_last_char(ctx) == ';')
- {
- xml_dec(ctx);
- return v;
- }
- xml_error(ctx, "Expected ';'");
-recover:
- while (xml_last_char(ctx) != ';')
- xml_get_char(ctx);
- xml_dec(ctx);
- return UNI_REPLACEMENT;
-}
-
-/* References to general entities */
-
-static void
-xml_parse_ge_ref(struct xml_context *ctx, struct fastbuf *out)
-{
- /* Reference ::= EntityRef | CharRef
- * EntityRef ::= '&' Name ';'
- * Already parsed: '&' */
- if (xml_peek_char(ctx) == '#')
- {
- xml_skip_char(ctx);
- uns c = xml_parse_char_ref(ctx);
- bput_utf8_32(out, c);
- }
- else
- {
- struct mempool_state state;
- mp_save(ctx->pool, &state);
- char *name = xml_parse_name(ctx);
- xml_parse_char(ctx, ';');
- struct xml_dtd_ent *ent = xml_dtd_find_gent(ctx, name);
- if (!ent)
- {
- xml_error(ctx, "Unknown entity &%s;", name);
- bputc(out, '&');
- bputs(out, name);
- bputc(out, ';');
- }
- else if (ent->flags & XML_DTD_ENT_TRIVIAL)
- {
- TRACE(ctx, "Trivial entity &%s;", name);
- bwrite(out, ent->text, ent->len);
- }
- else
- {
- TRACE(ctx, "Pushed entity &%s;", name);
- mp_restore(ctx->pool, &state);
- xml_dec(ctx);
- xml_push_entity(ctx, ent);
- return;
- }
- mp_restore(ctx->pool, &state);
- xml_dec(ctx);
- }
-}
-
-/* References to parameter entities */
-
-static void
-xml_parse_pe_ref(struct xml_context *ctx)
-{
- /* PEReference ::= '%' Name ';'
- * Already parsed: '%' */
- struct mempool_state state;
- mp_save(ctx->pool, &state);
- char *name = xml_parse_name(ctx);
- xml_parse_char(ctx, ';');
- struct xml_dtd_ent *ent = xml_dtd_find_pent(ctx, name);
- if (!ent)
- xml_error(ctx, "Unknown entity %%%s;", name);
- else
- {
- TRACE(ctx, "Pushed entity %%%s;", name);
- mp_restore(ctx->pool, &state);
- xml_dec(ctx);
- xml_push_entity(ctx, ent);
- return;
- }
- mp_restore(ctx->pool, &state);
- xml_dec(ctx);
-}
-
-static void
-xml_parse_dtd_pe(struct xml_context *ctx)
-{
- do
- {
- xml_skip_char(ctx);
- xml_inc(ctx);
- while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
- xml_skip_char(ctx);
- xml_parse_pe_ref(ctx);
- }
- while (xml_peek_char(ctx) != '%');
-}
-
-static inline uns
-xml_parse_dtd_white(struct xml_context *ctx, uns mandatory)
-{
- /* Whitespace or parameter entity */
- uns cnt = 0;
- while (xml_peek_cat(ctx) & XML_CHAR_WHITE)
- {
- xml_skip_char(ctx);
- cnt = 1;
- }
- if (xml_peek_char(ctx) == '%')
- {
- xml_parse_dtd_pe(ctx);
- return 1;
- }
- else if (unlikely(mandatory && !cnt))
- xml_fatal_expected_white(ctx);
- return cnt;
-}
-
-static inline uns
-xml_check_dtd_pe(struct xml_context *ctx)
-{
- if (xml_peek_char(ctx) == '%')
- {
- xml_parse_dtd_pe(ctx);
- return 1;
- }
- return 0;
-}
-
-/* External ID */
-
-static void
-xml_parse_external_id(struct xml_context *ctx, struct xml_ext_id *eid, uns allow_public, uns dtd)
-{
- bzero(eid, sizeof(*eid));
- if (dtd)
- xml_check_dtd_pe(ctx);
- uns c = xml_peek_char(ctx);
- if (c == 'S')
- {
- xml_parse_seq(ctx, "SYSTEM");
- if (dtd)
- xml_parse_dtd_white(ctx, 1);
- else
- xml_parse_white(ctx, 1);
- eid->system_id = xml_parse_system_literal(ctx);
- }
- else if (c == 'P')
- {
- xml_parse_seq(ctx, "PUBLIC");
- if (dtd)
- xml_parse_dtd_white(ctx, 1);
- else
- xml_parse_white(ctx, 1);
- eid->public_id = xml_parse_pubid_literal(ctx);
- if (dtd ? xml_parse_dtd_white(ctx, 0) : xml_parse_white(ctx, 0))
- if ((c = xml_peek_char(ctx)) == '\'' || c == '"' || !allow_public)
- eid->system_id = xml_parse_system_literal(ctx);
- }
- else
- xml_fatal(ctx, "Expected an external ID");
-}
-
-/* DTD: <!NOTATION ...> */
-
-static void
-xml_parse_notation_decl(struct xml_context *ctx)
-{
- /* NotationDecl ::= '<!NOTATION' S Name S (ExternalID | PublicID) S? '>'
- * Already parsed: '<!NOTATION' */
- TRACE(ctx, "parse_notation_decl");
- struct xml_dtd *dtd = ctx->dtd;
- xml_parse_dtd_white(ctx, 1);
-
- struct xml_dtd_notn *notn = xml_dtd_notns_lookup(dtd->tab_notns, xml_parse_name(ctx));
- xml_parse_dtd_white(ctx, 1);
- struct xml_ext_id eid;
- xml_parse_external_id(ctx, &eid, 1, 1);
- xml_parse_dtd_white(ctx, 0);
- xml_parse_char(ctx, '>');
-
- if (notn->flags & XML_DTD_NOTN_DECLARED)
- xml_warn(ctx, "Notation %s already declared", notn->name);
- else
- {
- notn->flags = XML_DTD_NOTN_DECLARED;
- notn->eid = eid;
- slist_add_tail(&dtd->notns, ¬n->n);
- }
- xml_dec(ctx);
-}
-
-/* DTD: <!ENTITY ...> */
-
-static void
-xml_parse_entity_decl(struct xml_context *ctx)
-{
- /* Already parsed: '<!ENTITY' */
- TRACE(ctx, "parse_entity_decl");
- struct xml_dtd *dtd = ctx->dtd;
- xml_parse_dtd_white(ctx, 1);
-
- uns flags = (xml_get_char(ctx) == '%') ? XML_DTD_ENT_PARAMETER : 0;
- if (flags)
- xml_parse_dtd_white(ctx, 1);
- else
- xml_unget_char(ctx);
-
- struct xml_dtd_ent *ent = xml_dtd_ents_lookup(flags ? dtd->tab_pents : dtd->tab_gents, xml_parse_name(ctx));
- slist *list = flags ? &dtd->pents : &dtd->gents;
- xml_parse_white(ctx, 1);
- if (ent->flags & XML_DTD_ENT_DECLARED)
- {
- xml_fatal(ctx, "Entity &%s; already declared, skipping not implemented", ent->name);
- // FIXME: should be only warning
- }
-
- uns c, sep = xml_get_char(ctx);
- if (sep == '\'' || sep == '"')
- {
- /* Internal entity:
- * EntityValue ::= '"' ([^%&"] | PEReference | Reference)* '"' | "'" ([^%&'] | PEReference | Reference)* "'" */
- struct fastbuf *out = ctx->value;
- while (1)
- {
- if ((c = xml_get_char(ctx)) == sep)
- break;
- else if (c == '%')
- {
- // FIXME
- ASSERT(0);
- //xml_parse_parameter_ref(ctx);
- }
- else if (c != '&')
- bput_utf8_32(out, c);
- else if ((c = xml_get_char(ctx)) == '#')
- c = xml_parse_char_ref(ctx);
- else
- {
- /* Bypass references to general entities */
- mp_push(ctx->pool);
- bputc(out, '&');
- xml_unget_char(ctx);
- bputs(out, xml_parse_name(ctx));
- xml_parse_char(ctx, ';');
- bputc(out, ';');
- mp_pop(ctx->pool);
- }
- }
- bputc(out, 0);
- fbgrow_rewind(out);
- slist_add_tail(list, &ent->n);
- ent->flags = flags | XML_DTD_ENT_DECLARED;
- ent->len = out->bstop - out->bptr - 1;
- ent->text = mp_memdup(ctx->pool, out->bptr, ent->len + 1);
- fbgrow_reset(out);
- }
- else
- {
- /* External entity */
- struct xml_ext_id eid;
- struct xml_dtd_notn *notn = NULL;
- xml_parse_external_id(ctx, &eid, 0, 0);
- if (!xml_parse_white(ctx, 0) || !flags)
- xml_parse_char(ctx, '>');
- else if (xml_get_char(ctx) != '>')
- {
- /* General external unparsed entity */
- flags |= XML_DTD_ENT_UNPARSED;
- xml_parse_seq(ctx, "NDATA");
- xml_parse_white(ctx, 1);
- notn = xml_dtd_notns_lookup(dtd->tab_notns, xml_parse_name(ctx));
- }
- slist_add_tail(list, &ent->n);
- ent->flags = flags | XML_DTD_ENT_DECLARED | XML_DTD_ENT_EXTERNAL;
- ent->eid = eid;
- ent->notn = notn;
- }
- xml_parse_dtd_white(ctx, 0);
- xml_parse_char(ctx, '>');
- xml_dec(ctx);
-}
-
-/* DTD: <!ELEMENT ...> */
-
-static void
-xml_parse_element_decl(struct xml_context *ctx)
-{
- /* Elementdecl ::= '<!ELEMENT' S Name S contentspec S? '>'
- * Already parsed: '<!ELEMENT' */
- xml_parse_dtd_white(ctx, 1);
- char *name = xml_parse_name(ctx);
- xml_parse_dtd_white(ctx, 1);
- struct xml_dtd *dtd = ctx->dtd;
- struct xml_dtd_elem *elem = xml_dtd_elems_lookup(dtd->tab_elems, name);
- if (elem->flags & XML_DTD_ELEM_DECLARED)
- xml_fatal(ctx, "Element <%s> already declared", name);
-
- /* contentspec ::= 'EMPTY' | 'ANY' | Mixed | children */
- uns c = xml_peek_char(ctx);
- if (c == 'E')
- {
- xml_parse_seq(ctx, "EMPTY");
- elem->type = XML_DTD_ELEM_EMPTY;
- }
- else if (c == 'A')
- {
- xml_parse_seq(ctx, "ANY");
- elem->type = XML_DTD_ELEM_ANY;
- }
- else if (c == '(')
- {
- xml_skip_char(ctx);
- xml_inc(ctx);
- xml_parse_dtd_white(ctx, 0);
- struct xml_dtd_elem_node *parent = elem->node = mp_alloc_zero(dtd->pool, sizeof(*parent));
- if (xml_peek_char(ctx) == '#')
- {
- /* Mixed ::= '(' S? '#PCDATA' (S? '|' S? Name)* S? ')*' | '(' S? '#PCDATA' S? ')' */
- xml_skip_char(ctx);
- xml_parse_seq(ctx, "PCDATA");
- elem->type = XML_DTD_ELEM_MIXED;
- parent->type = XML_DTD_ELEM_PCDATA;
- while (1)
- {
- xml_parse_dtd_white(ctx, 0);
- if ((c = xml_get_char(ctx)) == ')')
- break;
- else if (c != '|')
- xml_fatal_expected(ctx, ')');
- xml_parse_dtd_white(ctx, 0);
- struct xml_dtd_elem *son_elem = xml_dtd_elems_lookup(dtd->tab_elems, xml_parse_name(ctx));
- if (xml_dtd_enodes_find(dtd->tab_enodes, parent, son_elem))
- xml_error(ctx, "Duplicate content '%s'", son_elem->name);
- else
- {
- struct xml_dtd_elem_node *son = xml_dtd_enodes_new(dtd->tab_enodes, parent, son_elem);
- slist_add_tail(&parent->sons, &son->n);
- }
- }
- xml_dec(ctx);
- if (xml_peek_char(ctx) == '*')
- {
- xml_skip_char(ctx);
- parent->occur = XML_DTD_ELEM_OCCUR_MULT;
- }
- else if (!slist_head(&parent->sons))
- parent->occur = XML_DTD_ELEM_OCCUR_ONCE;
- else
- xml_fatal_expected(ctx, '*');
- }
- else
- {
- /* children ::= (choice | seq) ('?' | '*' | '+')?
- * cp ::= (Name | choice | seq) ('?' | '*' | '+')?
- * choice ::= '(' S? cp ( S? '|' S? cp )+ S? ')'
- * seq ::= '(' S? cp ( S? ',' S? cp )* S? ')' */
-
- elem->type = XML_DTD_ELEM_CHILDREN;
- parent->type = XML_DTD_ELEM_PCDATA;
- uns c;
- goto first;
-
- while (1)
- {
- /* After name */
- xml_parse_dtd_white(ctx, 0);
- if ((c = xml_get_char(ctx)) == ')')
- {
- xml_dec(ctx);
- if (parent->type == XML_DTD_ELEM_PCDATA)
- parent->type = XML_DTD_ELEM_SEQ;
- if ((c = xml_get_char(ctx)) == '?')
- parent->occur = XML_DTD_ELEM_OCCUR_OPT;
- else if (c == '*')
- parent->occur = XML_DTD_ELEM_OCCUR_MULT;
- else if (c == '+')
- parent->occur = XML_DTD_ELEM_OCCUR_PLUS;
- else
- {
- xml_unget_char(ctx);
- parent->occur = XML_DTD_ELEM_OCCUR_ONCE;
- }
- if (!parent->parent)
- break;
- parent = parent->parent;
- continue;
- }
- else if (c == '|')
- {
- if (parent->type == XML_DTD_ELEM_PCDATA)
- parent->type = XML_DTD_ELEM_OR;
- else if (parent->type != XML_DTD_ELEM_OR)
- xml_fatal(ctx, "Mixed operators in the list of element children");
- }
- else if (c == ',')
- {
- if (parent->type == XML_DTD_ELEM_PCDATA)
- parent->type = XML_DTD_ELEM_SEQ;
- else if (parent->type != XML_DTD_ELEM_SEQ)
- xml_fatal(ctx, "Mixed operators in the list of element children");
- }
- else if (c == '(')
- {
- xml_inc(ctx);
- struct xml_dtd_elem_node *son = mp_alloc_zero(dtd->pool, sizeof(*son));
- son->parent = parent;
- slist_add_tail(&parent->sons, &son->n);
- parent = son->parent;
- son->type = XML_DTD_ELEM_MIXED;
- }
- else
- xml_unget_char(ctx);
-
- /* Before name */
- xml_parse_dtd_white(ctx, 0);
-first:;
- struct xml_dtd_elem *son_elem = xml_dtd_elems_lookup(dtd->tab_elems, xml_parse_name(ctx));
- // FIXME: duplicates, occurance
- //struct xml_dtd_elem_node *son = xml_dtd_enodes_new(dtd->tab_enodes, parent, son_elem);
- struct xml_dtd_elem_node *son = mp_alloc_zero(dtd->pool, sizeof(*son));
- son->parent = parent;
- son->elem = son_elem;
- slist_add_tail(&parent->sons, &son->n);
- }
- }
- }
- else
- xml_fatal(ctx, "Expected element content specification");
-
- xml_parse_dtd_white(ctx, 0);
- xml_parse_char(ctx, '>');
- xml_dec(ctx);
-}
-
-static char *
-xml_parse_attr_value(struct xml_context *ctx, struct xml_dtd_attr *attr UNUSED)
-{
- uns quote = xml_parse_quote(ctx);
- xml_push(ctx);
- struct fastbuf *out = ctx->value;
- while (1)
- {
- uns c = xml_get_char(ctx);
- if (c == '&')
- {
- xml_inc(ctx);
- xml_parse_ge_ref(ctx, out);
- }
- else if (c == quote) // FIXME: beware quotes inside parsed
- break;
- else if (c == '<')
- xml_error(ctx, "Attribute value must not contain '<'");
- else
- bput_utf8_32(out, c);
- }
- xml_pop(ctx);
- bputc(out, 0);
- fbgrow_rewind(out);
- char *value = mp_memdup(ctx->pool, out->bptr, out->bstop - out->bptr);
- // FIXME: check value constraints / normalize value
- fbgrow_reset(out);
- return value;
-}
-
-static void
-xml_parse_attr_list_decl(struct xml_context *ctx)
-{
- /* AttlistDecl ::= '<!ATTLIST' S Name AttDef* S? '>'
- * AttDef ::= S Name S AttType S DefaultDecl
- * Already parsed: '<!ATTLIST' */
- xml_parse_dtd_white(ctx, 1);
- struct xml_dtd_elem *elem = xml_dtd_elems_lookup(ctx->dtd->tab_elems, xml_parse_name(ctx));
-
- while (xml_parse_dtd_white(ctx, 0) && xml_peek_char(ctx) != '>')
- {
- char *name = xml_parse_name(ctx);
- struct xml_dtd_attr *attr = xml_dtd_attrs_find(ctx->dtd->tab_attrs, elem, name);
- uns ignored = 0;
- if (attr)
- {
- xml_warn(ctx, "Duplicate attribute definition");
- ignored++;
- }
- else
- attr = xml_dtd_attrs_new(ctx->dtd->tab_attrs, elem, name);
- xml_parse_dtd_white(ctx, 1);
- if (xml_peek_char(ctx) == '(')
- {
- xml_skip_char(ctx); // FIXME: xml_inc/dec ?
- if (!ignored)
- attr->type = XML_ATTR_ENUM;
- do
- {
- xml_parse_dtd_white(ctx, 0);
- char *value = xml_parse_nmtoken(ctx);
- if (!ignored)
- if (xml_dtd_evals_find(ctx->dtd->tab_evals, attr, value))
- xml_error(ctx, "Duplicate enumeration value");
- else
- xml_dtd_evals_new(ctx->dtd->tab_evals, attr, value);
- xml_parse_dtd_white(ctx, 0);
- }
- while (xml_get_char(ctx) == '|');
- xml_unget_char(ctx);
- xml_parse_char(ctx, ')');
- }
- else
- {
- char *type = xml_parse_name(ctx);
- enum xml_dtd_attribute_type t;
- if (!strcmp(type, "CDATA"))
- t = XML_ATTR_CDATA;
- else if (!strcmp(type, "ID"))
- t = XML_ATTR_ID;
- else if (!strcmp(type, "IDREF"))
- t = XML_ATTR_IDREF;
- else if (!strcmp(type, "IDREFS"))
- t = XML_ATTR_IDREFS;
- else if (!strcmp(type, "ENTITY"))
- t = XML_ATTR_ENTITY;
- else if (!strcmp(type, "ENTITIES"))
- t = XML_ATTR_ENTITIES;
- else if (!strcmp(type, "NMTOKEN"))
- t = XML_ATTR_NMTOKEN;
- else if (!strcmp(type, "NMTOKENS"))
- t = XML_ATTR_NMTOKENS;
- else if (!strcmp(type, "NOTATION"))
- {
- if (elem->type == XML_DTD_ELEM_EMPTY)
- xml_fatal(ctx, "Empty element must not have notation attribute");
- // FIXME: An element type MUST NOT have more than one NOTATION attribute specified.
- t = XML_ATTR_NOTATION;
- xml_parse_dtd_white(ctx, 1);
- xml_parse_char(ctx, '(');
- do
- {
- xml_parse_dtd_white(ctx, 0);
- struct xml_dtd_notn *n = xml_dtd_notns_lookup(ctx->dtd->tab_notns, xml_parse_name(ctx));
- if (!ignored)
- if (xml_dtd_enotns_find(ctx->dtd->tab_enotns, attr, n))
- xml_error(ctx, "Duplicate enumerated notation");
- else
- xml_dtd_enotns_new(ctx->dtd->tab_enotns, attr, n);
- xml_parse_dtd_white(ctx, 0);
- }
- while (xml_get_char(ctx) == '|');
- xml_unget_char(ctx);
- xml_parse_char(ctx, ')');
- }
- else
- xml_fatal(ctx, "Unknown attribute type");
- if (!ignored)
- attr->type = t;
- }
- xml_parse_dtd_white(ctx, 1);
- enum xml_dtd_attribute_default def = XML_ATTR_NONE;
- if (xml_get_char(ctx) == '#')
- switch (xml_peek_char(ctx))
- {
- case 'R':
- xml_parse_seq(ctx, "REQUIRED");
- def = XML_ATTR_REQUIRED;
- break;
- case 'I':
- xml_parse_seq(ctx, "IMPLIED");
- def = XML_ATTR_IMPLIED;
- break;
- case 'F':
- xml_parse_seq(ctx, "FIXED");
- def = XML_ATTR_FIXED;
- xml_parse_dtd_white(ctx, 1);
- break;
- default:
- xml_fatal(ctx, "Expected a modifier for default attribute value");
- }
- else
- xml_unget_char(ctx);
- if (def != XML_ATTR_REQUIRED && def != XML_ATTR_IMPLIED)
- {
- char *v = xml_parse_attr_value(ctx, attr);
- if (!ignored)
- attr->default_value = v;
- }
- if (!ignored)
- attr->default_mode = def;
- }
- xml_skip_char(ctx);
- xml_dec(ctx);
-}
-
-/* DTD: Internal subset */
-
-static void
-xml_parse_internal_subset(struct xml_context *ctx)
-{
- // FIXME: comments/pi have no parent
- /* '[' intSubset ']'
- * intSubset :== (markupdecl | DeclSep)
- * Already parsed: ']' */
- while (1)
- {
- xml_parse_white(ctx, 0);
- uns c = xml_get_char(ctx);
- xml_inc(ctx);
- if (c == '<')
- if ((c = xml_get_char(ctx)) == '!')
- switch (c = xml_get_char(ctx))
- {
- case '-':
- xml_push_comment(ctx);
- xml_pop_comment(ctx);
- break;
- case 'N':
- xml_parse_seq(ctx, "OTATION");
- xml_parse_notation_decl(ctx);
- break;
- case 'E':
- if ((c = xml_get_char(ctx)) == 'N')
- {
- xml_parse_seq(ctx, "TITY");
- xml_parse_entity_decl(ctx);
- }
- else if (c == 'L')
- {
- xml_parse_seq(ctx, "EMENT");
- xml_parse_element_decl(ctx);
- }
- else
- goto invalid_markup;
- break;
- case 'A':
- xml_parse_seq(ctx, "TTLIST");
- xml_parse_attr_list_decl(ctx);
- break;
- default:
- goto invalid_markup;
- }
- else if (c == '?')
- {
- xml_push_pi(ctx);
- xml_pop_pi(ctx);
- }
- else
- goto invalid_markup;
- else if (c == '%')
- xml_parse_dtd_pe(ctx);
- else if (c == ']')
- break;
- else
- goto invalid_markup;
- }
- xml_dec(ctx);
- xml_dec(ctx);
- return;
-invalid_markup:
- xml_fatal(ctx, "Invalid markup in the internal subset");
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-static void
-xml_parse_cdata(struct xml_context *ctx)
-{
- struct fastbuf *out = ctx->chars;
- xml_parse_seq(ctx, "CDATA[");
- while (1)
- {
- uns c;
- if ((c = xml_get_char(ctx)) == ']')
- {
- if ((c = xml_get_char(ctx)) == ']')
- if ((c = xml_get_char(ctx)) == '>')
- break;
- else
- bputc(out, ']');
- bputc(out, ']');
- }
- bput_utf8_32(out, c);
- }
-}
-
-static void
-xml_skip_cdata(struct xml_context *ctx)
-{
- xml_parse_cdata(ctx);
-}
-
-static void
-xml_parse_chars(struct xml_context *ctx)
-{
- TRACE(ctx, "parse_chars");
- struct fastbuf *out = ctx->chars;
- uns c;
- while ((c = xml_get_char(ctx)) != '<')
- if (c == '&')
- {
- xml_inc(ctx);
- xml_parse_ge_ref(ctx, out);
- }
- else
- bput_utf8_32(out, c);
- xml_unget_char(ctx);
-}
-
-/*----------------------------------------------*/
-
-struct xml_attrs_table;
-
-static inline uns
-xml_attrs_hash(struct xml_attrs_table *t UNUSED, struct xml_elem *e, char *n)
-{
- return hash_pointer(e) ^ hash_string(n);
-}
-
-static inline int
-xml_attrs_eq(struct xml_attrs_table *t UNUSED, struct xml_elem *e1, char *n1, struct xml_elem *e2, char *n2)
-{
- return (e1 == e2) && !strcmp(n1, n2);
-}
-
-static inline void
-xml_attrs_init_key(struct xml_attrs_table *t UNUSED, struct xml_attr *a, struct xml_elem *e, char *name)
-{
- a->elem = e;
- a->name = name;
- a->val = NULL;
- slist_add_tail(&e->attrs, &a->n);
-}
-
-#define HASH_PREFIX(x) xml_attrs_##x
-#define HASH_NODE struct xml_attr
-#define HASH_KEY_COMPLEX(x) x elem, x name
-#define HASH_KEY_DECL struct xml_elem *elem, char *name
-#define HASH_TABLE_DYNAMIC
-#define HASH_GIVE_EQ
-#define HASH_GIVE_HASHFN
-#define HASH_GIVE_INIT_KEY
-#define HASH_WANT_CLEANUP
-#define HASH_WANT_REMOVE
-#define HASH_WANT_LOOKUP
-#define HASH_WANT_FIND
-#define HASH_GIVE_ALLOC
-XML_HASH_GIVE_ALLOC
-#include "lib/hashtable.h"
-
-void
-xml_init(struct xml_context *ctx)
-{
- bzero(ctx, sizeof(*ctx));
- ctx->pool = mp_new(65536);
- ctx->chars = fbgrow_create(4096);
- ctx->value = fbgrow_create(4096);
- xml_dtd_init(ctx);
- xml_attrs_init(ctx->tab_attrs = xml_hash_new(ctx->pool, sizeof(struct xml_attrs_table)));
-}
-
-void
-xml_cleanup(struct xml_context *ctx)
-{
- xml_attrs_cleanup(ctx->tab_attrs);
- xml_dtd_cleanup(ctx);
- bclose(ctx->value);
- bclose(ctx->chars);
- mp_delete(ctx->pool);
-}
-
-static void
-xml_parse_attr(struct xml_context *ctx)
-{
- // FIXME: memory management, dtd, literal
- TRACE(ctx, "parse_attr");
- struct xml_elem *e = ctx->elem;
- char *name = xml_parse_name(ctx);
- struct xml_attr *a = xml_attrs_lookup(ctx->tab_attrs, e, name);
- xml_parse_eq(ctx);
- char *val =xml_parse_system_literal(ctx);
- if (a->val)
- xml_error(ctx, "Attribute is not unique");
- else
- a->val = val;
-}
-
-static void
-xml_parse_stag(struct xml_context *ctx)
-{
- // FIXME: dtd
- TRACE(ctx, "parse_stag");
- xml_push(ctx);
- struct xml_elem *e = mp_alloc_zero(ctx->pool, sizeof(*e));
- struct xml_elem *parent = ctx->elem;
- clist_init(&e->sons);
- e->node.parent = (void *)parent;
- ctx->elem = e;
- e->name = xml_parse_name(ctx);
- if (parent)
- clist_add_tail(&parent->sons, &e->node.n);
- else
- {
- ctx->root = e;
- if (ctx->document_type && strcmp(e->name, ctx->document_type))
- xml_error(ctx, "The root element does not match the document type");
- }
- while (1)
- {
- uns white = xml_parse_white(ctx, 0);
- uns c = xml_get_char(ctx);
- if (c == '/')
- {
- xml_parse_char(ctx, '>');
- ctx->flags |= XML_FLAG_EMPTY_ELEM;
- break;
- }
- else if (c == '>')
- break;
- else if (!white)
- xml_fatal_expected_white(ctx);
- xml_unget_char(ctx);
- xml_parse_attr(ctx);
- }
- if (ctx->h_element_start)
- ctx->h_element_start(ctx);
-}
-
-static void
-xml_parse_etag(struct xml_context *ctx)
-{
- TRACE(ctx, "parse_etag");
- struct xml_elem *e = ctx->elem;
- ASSERT(e);
- char *name = xml_parse_name(ctx);
- if (strcmp(name, e->name))
- xml_fatal(ctx, "Invalid ETag, expected '%s'", e->name);
- xml_parse_white(ctx, 0);
- xml_parse_char(ctx, '>');
- xml_dec(ctx);
-}
-
-static void
-xml_pop_element(struct xml_context *ctx)
-{
- TRACE(ctx, "pop_element");
- if (ctx->h_element_end)
- ctx->h_element_end(ctx);
- struct xml_elem *e = ctx->elem;
- if (ctx->flags & XML_DOM_FREE)
- {
- if (e->node.parent)
- clist_remove(&e->node.n);
- else
- ctx->root = NULL;
- SLIST_FOR_EACH(struct xml_attr *, a, e->attrs)
- xml_attrs_remove(ctx->tab_attrs, a);
- struct xml_node *n;
- while (n = clist_head(&e->sons))
- {
- if (n->type == XML_NODE_ELEM)
- {
- SLIST_FOR_EACH(struct xml_attr *, a, ((struct xml_elem *)n)->attrs)
- xml_attrs_remove(ctx->tab_attrs, a);
- clist_insert_list_after(&((struct xml_elem *)n)->sons, &n->n);
- }
- clist_remove(&n->n);
- }
- }
- ctx->node = e->node.parent;
- xml_pop(ctx); // FIXME: memory management without XML_DOM_FREE
- xml_dec(ctx);
-#if 0
- for (struct xml_attribute *a = e->attrs; a; a = a->next)
- xml_attribute_remove(ctx->attribute_table, a);
-#endif
-}
-
-static void
-xml_parse_doctype_decl(struct xml_context *ctx)
-{
- if (ctx->document_type)
- xml_fatal(ctx, "Multiple document types not allowed");
- xml_parse_seq(ctx, "DOCTYPE");
- xml_parse_white(ctx, 1);
- ctx->document_type = xml_parse_name(ctx);
- TRACE(ctx, "doctyype=%s", ctx->document_type);
- uns white = xml_parse_white(ctx, 0);
- uns c = xml_peek_char(ctx);
- if (c != '>' && c != '[' && white)
- {
- xml_parse_external_id(ctx, &ctx->eid, 0, 0);
- xml_parse_white(ctx, 0);
- ctx->flags |= XML_FLAG_HAS_EXTERNAL_SUBSET;
- }
- if (xml_peek_char(ctx) == '[')
- ctx->flags |= XML_FLAG_HAS_INTERNAL_SUBSET;
- if (ctx->h_doctype_decl)
- ctx->h_doctype_decl(ctx);
-}
-
-int
-xml_next(struct xml_context *ctx)
-{
- /* A nasty state machine */
-
- TRACE(ctx, "xml_next (state=%u)", ctx->state);
- jmp_buf throw_buf;
- ctx->throw_buf = &throw_buf;
- if (setjmp(throw_buf))
- {
-error:
- if (ctx->err_code == XML_ERR_EOF && ctx->h_fatal)
- ctx->h_fatal(ctx);
- ctx->state = XML_STATE_FATAL;
- TRACE(ctx, "raised fatal error");
- return -1;
- }
- uns c;
- switch (ctx->state)
- {
- case XML_STATE_FATAL:
- return -1;
-
- case XML_STATE_START:
- TRACE(ctx, "entering prolog");
- if (ctx->h_document_start)
- ctx->h_document_start(ctx);
- /* XMLDecl */
- xml_refill(ctx);
- if (ctx->h_xml_decl)
- ctx->h_xml_decl(ctx);
- if (ctx->want & XML_WANT_DECL)
- return ctx->state = XML_STATE_DECL;
- case XML_STATE_DECL:
-
- /* Misc* (doctypedecl Misc*)? */
- while (1)
- {
- xml_parse_white(ctx, 0);
- xml_parse_char(ctx, '<');
- if ((c = xml_get_char(ctx)) == '?')
- /* Processing intruction */
- if (!(ctx->want & XML_WANT_PI))
- xml_skip_pi(ctx);
- else
- {
- xml_push_pi(ctx);
- ctx->state = XML_STATE_PROLOG_PI;
- return XML_STATE_PI;
- case XML_STATE_PROLOG_PI:
- xml_pop_pi(ctx);
- }
- else if (c != '!')
- {
- /* Found the root tag */
- xml_unget_char(ctx);
- goto first_tag;
- }
- else if (xml_get_char(ctx) == '-')
- if (!(ctx->want & XML_WANT_COMMENT))
- xml_skip_comment(ctx);
- else
- {
- xml_push_comment(ctx);
- ctx->state = XML_STATE_PROLOG_COMMENT;
- return XML_STATE_COMMENT;
- case XML_STATE_PROLOG_COMMENT:
- xml_pop_comment(ctx);
- }
- else
- {
- /* DocTypeDecl */
- xml_unget_char(ctx);
- xml_parse_doctype_decl(ctx);
- if (ctx->want & XML_WANT_DOCUMENT_TYPE)
- return ctx->state = XML_STATE_DOCUMENT_TYPE;
- case XML_STATE_DOCUMENT_TYPE:
- if (xml_peek_char(ctx) == '[')
- {
- xml_skip_char(ctx);
- xml_inc(ctx);
- xml_parse_internal_subset(ctx);
- xml_parse_white(ctx, 0);
- }
- xml_parse_char(ctx, '>');
- }
- }
-
- case XML_STATE_PI:
- mp_pop(ctx->pool);
- case XML_STATE_COMMENT:
- fbgrow_reset(ctx->value);
-
- case XML_STATE_CHARS:
-
- while (1)
- {
- if (xml_peek_char(ctx) != '<')
- {
- /* CharData */
- xml_parse_chars(ctx);
- continue;
- }
- else
- xml_skip_char(ctx);
-first_tag: ;
-
- xml_inc(ctx);
- if ((c = xml_get_char(ctx)) == '?')
- {
- /* PI */
- if (!(ctx->want & XML_WANT_PI))
- xml_skip_pi(ctx);
- else
- {
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- ctx->state = XML_STATE_CHARS_BEFORE_PI;
- return XML_STATE_PI;
- case XML_STATE_CHARS_BEFORE_PI:
- fbgrow_reset(ctx->chars);
- }
- xml_push_pi(ctx);
- return ctx->state = XML_STATE_PI;
- }
- }
-
- else if (c == '!')
- if ((c = xml_get_char(ctx)) == '-')
- {
- /* Comment */
- if (!(ctx->want & XML_WANT_COMMENT))
- xml_skip_comment(ctx);
- else
- {
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- ctx->state = XML_STATE_CHARS_BEFORE_COMMENT;
- return XML_STATE_CHARS;
- case XML_STATE_CHARS_BEFORE_COMMENT:
- fbgrow_reset(ctx->chars);
- }
- xml_push_comment(ctx);
- return ctx->state = XML_STATE_COMMENT;
- }
- }
- else if (c == '[')
- {
- /* CDATA */
- if (!(ctx->want & XML_WANT_CDATA))
- xml_skip_cdata(ctx);
- else
- {
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- ctx->state = XML_STATE_CHARS_BEFORE_CDATA;
- return XML_STATE_CHARS;
- case XML_STATE_CHARS_BEFORE_CDATA:
- fbgrow_reset(ctx->chars);
- }
- xml_parse_cdata(ctx);
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- return ctx->state = XML_STATE_CDATA;
- }
- case XML_STATE_CDATA:
- fbgrow_reset(ctx->chars);
- }
- }
- else
- xml_fatal(ctx, "Unexpected character after '<!'");
-
- else if (c != '/')
- {
- /* STag | EmptyElemTag */
- xml_unget_char(ctx);
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- ctx->state = XML_STATE_CHARS_BEFORE_STAG;
- return XML_STATE_CHARS;
- case XML_STATE_CHARS_BEFORE_STAG:
- fbgrow_reset(ctx->chars);
- }
-
- xml_parse_stag(ctx);
- if (ctx->want & XML_WANT_STAG)
- return ctx->state = XML_STATE_STAG;
- case XML_STATE_STAG:
- if (ctx->flags & XML_FLAG_EMPTY_ELEM)
- goto pop_element;
- }
-
- else
- {
- /* ETag */
- if (btell(ctx->chars))
- {
- fbgrow_rewind(ctx->chars);
- ctx->state = XML_STATE_CHARS_BEFORE_ETAG;
- return XML_STATE_CHARS;
- case XML_STATE_CHARS_BEFORE_ETAG:
- fbgrow_reset(ctx->chars);
- }
-
- xml_parse_etag(ctx);
-pop_element:
- if (ctx->want & XML_WANT_ETAG)
- return ctx->state = XML_STATE_ETAG;
- case XML_STATE_ETAG:
- xml_pop_element(ctx);
- if (!ctx->elem)
- goto epilog;
- }
- }
-
-epilog:
- /* Misc* */
- TRACE(ctx, "entering epilog");
- while (1)
- {
- /* Epilog whitespace is the only place, where a valid document can reach EOF */
- if (setjmp(throw_buf))
- if (ctx->err_code == XML_ERR_EOF)
- {
- TRACE(ctx, "reached EOF");
- ctx->state = XML_STATE_EOF;
- if (ctx->h_document_end)
- ctx->h_document_end(ctx);
- case XML_STATE_EOF:
- return XML_STATE_EOF;
- }
- else
- goto error;
- xml_parse_white(ctx, 0);
- if (setjmp(throw_buf))
- goto error;
-
- /* Misc */
- xml_parse_char(ctx, '<');
- if ((c = xml_get_char(ctx)) == '?')
- /* Processing instruction */
- if (!(ctx->want & XML_WANT_PI))
- xml_skip_pi(ctx);
- else
- {
- xml_push_pi(ctx);
- return ctx->state = XML_STATE_EPILOG_PI, XML_STATE_PI;
- case XML_STATE_EPILOG_PI:
- xml_pop_pi(ctx);
- }
- else if (c == '!')
- /* Comment */
- if (!(ctx->want & XML_WANT_COMMENT))
- xml_skip_comment(ctx);
- else
- {
- xml_push_comment(ctx);
- return ctx->state = XML_STATE_EPILOG_COMMENT, XML_STATE_COMMENT;
- case XML_STATE_EPILOG_COMMENT:
- xml_pop_comment(ctx);
- }
- else
- xml_fatal(ctx, "Syntax error in the epilog");
- }
-
- }
- return -1;
-}
-
-#ifdef TEST
-
-static void
-error(struct xml_context *ctx)
-{
- msg((ctx->err_code < XML_ERR_ERROR) ? L_WARN_R : L_ERROR_R, "XML %u: %s", xml_row(ctx), ctx->err_msg);
-}
-
-static void
-test(struct fastbuf *in, struct fastbuf *out)
-{
- struct xml_context ctx;
- xml_init(&ctx);
- ctx.h_warn = ctx.h_error = ctx.h_fatal = error;
- ctx.want = XML_WANT_ALL;
- ctx.flags |= XML_DOM_FREE;
- xml_set_source(&ctx, in);
- int state;
- while ((state = xml_next(&ctx)) >= 0)
- switch (state)
- {
- case XML_STATE_CHARS:
- bprintf(out, "CHARS [%.*s]\n", (int)(ctx.chars->bstop - ctx.chars->buffer), ctx.chars->buffer);
- break;
- case XML_STATE_STAG:
- bprintf(out, "STAG <%s>\n", ctx.elem->name);
- SLIST_FOR_EACH(struct xml_attr *, a, ctx.elem->attrs)
- bprintf(out, " ATTR %s=[%s]\n", a->name, a->val);
- break;
- case XML_STATE_ETAG:
- bprintf(out, "ETAG </%s>\n", ctx.elem->name);
- break;
- case XML_STATE_COMMENT:
- bprintf(out, "COMMENT [%.*s]\n", (int)(ctx.value->bstop - ctx.value->buffer), ctx.value->buffer);
- break;
- case XML_STATE_PI:
- bprintf(out, "PI [%s] [%.*s]\n", ctx.name, (int)(ctx.value->bstop - ctx.value->buffer), ctx.value->buffer);
- break;
- case XML_STATE_CDATA:
- bprintf(out, "CDATA [%.*s]\n", (int)(ctx.chars->bstop - ctx.chars->buffer), ctx.chars->buffer);
- break;
- case XML_STATE_EOF:
- bprintf(out, "EOF\n");
- goto end;
- break;
- }
-end:
- xml_cleanup(&ctx);
-}
-
-int
-main(void)
-{
- struct fastbuf *in = bfdopen_shared(0, 1024);
- struct fastbuf *out = bfdopen_shared(1, 1024);
- test(in, out);
- bclose(out);
- return 0;
-}
-
-#endif
#include "lib/clists.h"
#include "lib/slists.h"
#include "lib/mempool.h"
+#include "lib/fastbuf.h"
enum xml_error {
XML_ERR_OK = 0,
cnode n; /* Node for list of parent's sons */
uns type; /* XML_NODE_x */
struct xml_node *parent; /* Parent node */
-};
-
-struct xml_elem {
- struct xml_node node;
- char *name; /* Element name */
- clist sons; /* List of subnodes */
- struct xml_dtd_elem *dtd; /* Element DTD */
- slist attrs; /* Link list of attributes */
+ char *name; /* Element name / PI target */
+ clist sons; /* Children nodes */
+ union {
+ struct {
+ char *text; /* PI text / Comment / CDATA */
+ uns len; /* Text length in bytes */
+ };
+ struct {
+ struct xml_dtd_elem *dtd; /* Element DTD */
+ slist attrs; /* Link list of element attributes */
+ };
+ };
};
struct xml_attr {
snode n;
- struct xml_elem *elem;
+ struct xml_node *elem;
char *name;
char *val;
};
struct xml_context;
-struct xml_stack {
- struct xml_stack *next; /* Link list of stack records */
- uns saved_flags; /* Saved ctx->flags */
- struct mempool_state saved_pool; /* Saved ctx->pool state */
-};
-
#define XML_BUF_SIZE 32 /* At least 16 -- hardcoded */
struct xml_source {
void (*h_fatal)(struct xml_context *ctx); /* Unrecoverable error callback */
/* Memory management */
- struct mempool *pool; /* Most data */
- struct fastbuf *chars; /* Character data */
- struct fastbuf *value; /* Attribute value / comment / processing instruction data */
- char *name; /* Attribute name, processing instruction target */
- void *tab_attrs;
-
- /* Stack */
- struct xml_stack *stack; /* See xml_push(), xml_pop() */
+ struct mempool *pool; /* DOM pool */
+ struct mempool *stack; /* Stack pool (freed as soon as possible) */
+ struct xml_stack *stack_list; /* See xml_push(), xml_pop() */
uns flags; /* XML_FLAG_x (restored on xml_pop()) */
uns depth; /* Nesting level */
+ struct fastbuf chars; /* Character data / attribute value */
+ void *tab_attrs;
/* Input */
struct xml_source *src; /* Current source */
void (*h_document_end)(struct xml_context *ctx); /* Called after leaving epilog */
void (*h_xml_decl)(struct xml_context *ctx); /* Called after the XML declaration */
void (*h_doctype_decl)(struct xml_context *ctx); /* Called in the doctype declaration just before internal subset */
- void (*h_pi)(struct xml_context *ctx); /* Called after a processing instruction */
void (*h_comment)(struct xml_context *ctx); /* Called after a comment */
+ void (*h_pi)(struct xml_context *ctx); /* Called after a processing instruction */
void (*h_element_start)(struct xml_context *ctx); /* Called after STag or EmptyElemTag */
void (*h_element_end)(struct xml_context *ctx); /* Called before ETag or after EmptyElemTag */
+ void (*h_chars)(struct xml_context *ctx); /* Called after some characters */
+ void (*h_cdata)(struct xml_context *ctx); /* Called after a CDATA section */
/* DOM */
- struct xml_elem *root; /* DOM root */
- union {
- struct xml_node *node; /* Current DOM node */
- struct xml_elem *elem; /* Current element */
- };
+ struct xml_node *root; /* DOM root */
+ struct xml_node *node; /* Current DOM node */
char *version_str;
uns standalone;
void (*start_dtd)(struct xml_context *ctx);
void (*end_dtd)(struct xml_context *ctx);
- void (*start_cdata)(struct xml_context *ctx);
- void (*end_cdata)(struct xml_context *ctx);
void (*start_entity)(struct xml_context *ctx);
void (*end_entity)(struct xml_context *ctx);
- void (*chacacters)(struct xml_context *ctx);
struct fastbuf *(*resolve_entity)(struct xml_context *ctx);
void (*notation_decl)(struct xml_context *ctx);
void (*unparsed_entity_decl)(struct xml_context *ctx);
void xml_cleanup(struct xml_context *ctx);
void xml_set_source(struct xml_context *ctx, struct fastbuf *fb);
int xml_next(struct xml_context *ctx);
+uns xml_row(struct xml_context *ctx);
#endif
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