2 * UCW Library -- Shell Interface to Configuration Files
4 * (c) 2002--2005 Martin Mares <mj@ucw.cz>
5 * (c) 2006 Robert Spalek <robert@ucw.cz>
6 * (c) 2006 Pavel Charvat <pchar@ucw.cz>
8 * Once we were using this beautiful Shell version, but it turned out
9 * that it doesn't work with nested config files:
11 * eval `sed <cf/sherlock '/^#/d;/^ *$/d;s/ \+$//;
12 * h;s@[^ ]*@@;x;s@[ ].*@@;y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/;G;s/\n//;
13 * /^\[SECTION\]/,/^\[/ {; /^[A-Z]/ { s/^\([^ ]\+\)[ ]*\(.*\)$/SH_\1="\2"/; p; }; };
16 * This software may be freely distributed and used according to the terms
17 * of the GNU Lesser General Public License.
22 #include "lib/getopt.h"
23 #include "lib/conf-internal.h"
24 #include "lib/clists.h"
25 #include "lib/mempool.h"
26 #include "lib/chartype.h"
38 Usage: config [-C<configfile>] [-S<section>.<option>=<value>] <sections>\n\
40 <sections>\t<section>[;<sections>]\n\
41 <section>\t[!]<name>{[<items>]}\n\
42 <items>\t\t[-]<item>[;<items>]\n\
43 <item>\t\t<static> | <array> | <list>\n\
44 <static>\t<type><name>[=<value>]\n\
45 <list>\t\t@<name>{[<items>]}\n\
46 <array>\t\t<type><name><left-bracket>[<number>]<right-bracket>\n\
47 <value>\t\t[a-zA-Z0-9.-/]* | 'string without single quotes'<value> | \"c-like string\"<value>\n\
51 #\t\t32-bit integer\n\
52 ##\t\t64-bit integer\n\
53 $\t\tFloating point number\n\
56 !\t\tReport unknown items as errors\n\
57 -\t\tDo not dump item's value\n\
71 #define FLAG_NO_UNKNOWN 0x2
88 static struct mempool *pool;
89 static clist sections;
103 die("Missing '%c'", c);
112 uns len = pos - name;
114 die("Expected item/section name");
115 byte *buf = mp_alloc(pool, len + 1);
116 memcpy(buf, name, len);
122 parse_section(struct section *section)
124 #define TRY(x) do{byte *_err=(x); if (_err) die(_err); }while(0)
125 for (uns sep = 0; ; sep = 1)
128 if (!*pos || *pos == '}')
139 struct section *sec = mp_alloc_zero(pool, sizeof(*sec));
140 sec->size = sizeof(cnode);
141 clist_init(&sec->list);
143 item->cf.name = parse_name();
144 item->cf.cls = CC_LIST;
153 item = mp_alloc_zero(pool, sizeof(*item));
156 item->flags |= FLAG_HIDE;
159 item->cf.cls = CC_STATIC;
167 item->cf.type = CT_U64;
170 item->cf.type = CT_INT;
174 item->cf.type = CT_DOUBLE;
178 die("Invalid type syntax");
179 item->cf.type = CT_STRING;
183 item->cf.name = parse_name();
189 item->cf.cls = CC_DYNAMIC;
191 while (*pos && *pos != ']')
197 item->cf.number = CF_ANY_NUM;
201 TRY(cf_parse_int(num, &inum));
203 die("Invalid array length");
204 item->cf.number = inum;
212 if (section->item.cf.cls == CC_LIST)
213 die("List items can not have default values");
214 if (item->cf.cls == CC_DYNAMIC)
215 die("Arrays can not have default values");
216 byte *def = pos, *d = def;
217 while (*pos != ';' && *pos != '}' && !Cspace(*pos))
225 die("Unterminated string");
230 else if (*pos == '"')
235 while (*pos != '"' || esc)
238 die("Unterminated string");
247 d = str_unesc(start, start);
253 byte *buf = mp_alloc(pool, len + 1);
254 memcpy(buf, def, len);
256 switch (item->cf.type)
259 item->value.v_ptr = buf;
262 TRY(cf_parse_int(buf, &item->value.v_int));
265 TRY(cf_parse_u64(buf, &item->value.v_u64));
268 TRY(cf_parse_double(buf, &item->value.v_double));
275 if (section->item.cf.cls == CC_LIST)
277 item->cf.ptr = (void *)(uintptr_t)section->size;
278 section->size += sizeof(union value);
281 item->cf.ptr = &item->value;
282 clist_add_tail(§ion->list, &item->node);
291 for (uns sep = 0; ; sep = 1)
299 struct section *sec = mp_alloc_zero(pool, sizeof(*sec));
303 sec->item.flags |= FLAG_NO_UNKNOWN;
305 sec->item.cf.name = parse_name();
308 clist_add_tail(§ions, &sec->item.node);
309 clist_init(&sec->list);
315 static struct cf_section *
316 generate_section(struct section *section)
318 struct cf_section *sec = mp_alloc_zero(pool, sizeof(*sec));
319 if (section->item.cf.cls == CC_LIST)
320 sec->size = section->size;
321 struct cf_item *c = sec->cfg = mp_alloc_zero(pool, sizeof(struct cf_item) * (section->count + 1));
322 CLIST_FOR_EACH(struct item *, item, section->list)
325 if (c->cls == CC_LIST)
326 c->u.sec = generate_section((struct section *)item);
336 dump_value(uns array, struct item *item, void *v)
338 byte buf[128], *value = buf;
340 printf("CF_%s_%s='", path.ptr, item->cf.name);
342 printf("CF_%s_%s[%u]='", path.ptr, item->cf.name, ++item->index);
343 switch (item->cf.type)
346 sprintf(buf, "%d", *(int *)v);
349 sprintf(buf, "%llu", (long long) *(u64 *)v);
352 sprintf(buf, "%g", *(double *)v);
374 dump_item(struct item *item, void *ptr, uns path_len)
376 if (item->flags & FLAG_HIDE)
378 byte *val = (byte *)((uintptr_t)ptr + (uintptr_t)item->cf.ptr);
379 if (item->cf.cls == CC_LIST)
381 uns len = strlen(item->cf.name);
382 bb_grow(&path, path_len + len + 1);
383 path.ptr[path_len] = '_';
384 memcpy(path.ptr + path_len + 1, item->cf.name, len);
385 CLIST_FOR_EACH(cnode *, ptr2, *(clist *)val)
386 CLIST_FOR_EACH(struct item *, item2, ((struct section *)item)->list)
387 dump_item(item2, ptr2, path_len + len + 1);
391 bb_grow(&path, path_len + 1)[path_len] = 0;
392 if (item->cf.cls == CC_STATIC)
393 dump_value(!!ptr, item, val);
397 uns len = DARY_LEN(val);
398 uns size = cf_type_size(item->cf.type, NULL);
399 for (uns i = 0; i < len; i++, val += size)
400 dump_value(1, item, val);
405 int main(int argc, char **argv)
410 pos = argv[argc - 1];
411 argv[argc - 1] = NULL;
413 pool = mp_new(0x1000);
414 clist_init(§ions);
416 CLIST_FOR_EACH(struct section *, sec, sections)
417 cf_declare_section(sec->item.cf.name, generate_section(sec), !(sec->item.flags & FLAG_NO_UNKNOWN));
419 if (cf_getopt(argc - 1, argv, CF_SHORT_OPTS, CF_NO_LONG_OPTS, NULL) != -1)
423 CLIST_FOR_EACH(struct section *, section, sections)
425 uns len = strlen(section->item.cf.name);
426 memcpy(bb_grow(&path, len), section->item.cf.name, len);
427 CLIST_FOR_EACH(struct item *, item, section->list)
428 dump_item(item, NULL, len);