From: Martin Mares <mj@ucw.cz>
Date: Sat, 11 Dec 2004 11:51:35 +0000 (+0000)
Subject: Moved the lizard-fb module to Sherlock library, because it's heavily
X-Git-Tag: holmes-import~853
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=836f12855a6ccfa54e727867584f070e5c846f4a;p=libucw.git

Moved the lizard-fb module to Sherlock library, because it's heavily
dependent on the bucket types. The rest of LiZaRd should better remain
in libucw, it's very useful outside Sherlock.
---

diff --git a/lib/Makefile b/lib/Makefile
index 1ae62a68..ff317b43 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -21,7 +21,7 @@ LIBUCW_MODS= \
 	db \
 	url \
 	mainloop exitstatus runcmd sighandler \
-	lizard lizard-safe lizard-fb adler32 \
+	lizard lizard-safe adler32 \
 	md5 md5hex \
 	base64 base224 \
 	sync
diff --git a/lib/lizard-fb.c b/lib/lizard-fb.c
deleted file mode 100644
index d356d0cd..00000000
--- a/lib/lizard-fb.c
+++ /dev/null
@@ -1,157 +0,0 @@
-/*
- *	LiZaRd -- Reading and writing to a fastbuf
- *
- *	(c) 2004, Robert Spalek <robert@ucw.cz>
- */
-
-#include "lib/lib.h"
-#include "lib/lizard.h"
-#include "lib/bbuf.h"
-#include "lib/fastbuf.h"
-#include "sherlock/bucket.h"		/* FIXME */
-
-#include <errno.h>
-
-static uns liz_type;
-static float liz_min_compr;
-
-static bb_t bb_in, bb_out;
-
-void
-lizard_set_type(uns type, float min_compr)
-{
-  liz_type = type;
-  liz_min_compr = min_compr;
-}
-
-int
-lizard_bwrite(struct fastbuf *fb_out, byte *ptr_in, uns len_in)
-{
-  byte *ptr_out;
-  uns len_out;
-  uns type = liz_type;
-  if (type == BUCKET_TYPE_V33_LIZARD && liz_min_compr)
-  {
-    uns est_out = len_in * LIZARD_MAX_MULTIPLY + LIZARD_MAX_ADD + 16;
-    uns aval_out = bdirect_write_prepare(fb_out, &ptr_out);
-    if (aval_out < est_out)
-    {
-      bb_grow(&bb_out, est_out);
-      ptr_out = bb_out.ptr;
-    }
-    else
-      ptr_out += 16;
-    len_out = lizard_compress(ptr_in, len_in, ptr_out);
-    if (len_out + 8 > len_in * liz_min_compr)
-    {
-      type = BUCKET_TYPE_V33;
-      ptr_out = ptr_in;
-      len_out = len_in;
-    }
-  }
-  else
-  {
-    if (type == BUCKET_TYPE_V33_LIZARD)
-      type = BUCKET_TYPE_V33;
-    ptr_out = ptr_in;
-    len_out = len_in;
-  }
-  bputl(fb_out, type);
-  bputl(fb_out, len_out);
-  if (type == BUCKET_TYPE_V33_LIZARD)
-  {
-    bputl(fb_out, len_in);
-    bputl(fb_out, adler32(ptr_in, len_in));
-  }
-  if (ptr_out == bb_out.ptr || ptr_out == ptr_in)
-    bwrite(fb_out, ptr_out, len_out);
-  else
-    bdirect_write_commit(fb_out, ptr_out + len_out);
-  return type;
-}
-
-int
-lizard_bbcopy_compress(struct fastbuf *fb_out, struct fastbuf *fb_in, uns len_in)
-{
-  byte *ptr_in;
-  uns i = bdirect_read_prepare(fb_in, &ptr_in);
-  if (i < len_in)
-  {
-    bb_grow(&bb_in, len_in);
-    bread(fb_in, bb_in.ptr, len_in);
-    ptr_in = bb_in.ptr;
-  }
-  else
-    bdirect_read_commit(fb_in, ptr_in + len_in);
-  return lizard_bwrite(fb_out, ptr_in, len_in);
-}
-
-static int
-decompress(struct lizard_buffer *liz_buf, byte *ptr_in, byte **ptr_out)
-{
-  uns orig_len = GET_U32(ptr_in);
-  uns orig_adler = GET_U32(ptr_in + 4);
-  ptr_in += 8;
-  *ptr_out = lizard_decompress_safe(ptr_in, liz_buf, orig_len);
-  if (!*ptr_out)
-    return -1;
-  if (adler32(*ptr_out, orig_len) != orig_adler)
-  {
-    errno = EINVAL;
-    return -1;
-  }
-  return orig_len;
-}
-
-int
-lizard_memread(struct lizard_buffer *liz_buf, byte *ptr_in, byte **ptr_out, uns *type)
-{
-  *type = GET_U32(ptr_in);
-  if (*type < BUCKET_TYPE_PLAIN || *type > BUCKET_TYPE_V33_LIZARD)
-  {
-    errno = EINVAL;
-    return -1;
-  }
-  uns stored_len = GET_U32(ptr_in + 4);
-  ptr_in += 8;
-  if (*type == BUCKET_TYPE_V33_LIZARD)
-    return decompress(liz_buf, ptr_in, ptr_out);
-  else
-  {
-    *ptr_out = ptr_in;
-    return stored_len;
-  }
-}
-
-int
-lizard_bread(struct lizard_buffer *liz_buf, struct fastbuf *fb_in, byte **ptr_out, uns *type)
-{
-  *type = bgetl(fb_in);
-  if (*type < BUCKET_TYPE_PLAIN || *type > BUCKET_TYPE_V33_LIZARD)
-  {
-    if (*type == ~0U)			// EOF
-      errno = EBADF;
-    else
-      errno = EINVAL;
-    return -1;
-  }
-  uns stored_len = bgetl(fb_in);
-  uns want_len = stored_len + (*type == BUCKET_TYPE_V33_LIZARD ? 8 : 0);
-  byte *ptr_in;
-  uns i = bdirect_read_prepare(fb_in, &ptr_in);
-  if (i < want_len)
-  {
-    bb_grow(&bb_in, want_len);
-    bread(fb_in, bb_in.ptr, want_len);
-    ptr_in = bb_in.ptr;
-  }
-  else
-    bdirect_read_commit(fb_in, ptr_in + want_len);
-  if (*type == BUCKET_TYPE_V33_LIZARD)
-    return decompress(liz_buf, ptr_in, ptr_out);
-  else
-  {
-    *ptr_out = ptr_in;
-    return stored_len;
-  }
-}
diff --git a/lib/lizard.h b/lib/lizard.h
index be8a0618..bc7f317e 100644
--- a/lib/lizard.h
+++ b/lib/lizard.h
@@ -46,14 +46,4 @@ adler32(byte *buf, uns len)
   return update_adler32(1, buf, len);
 }
 
-/* lizard-fb.c */
-struct fastbuf;
-
-void lizard_set_type(uns type, float min_compr);
-int lizard_bwrite(struct fastbuf *fb_out, byte *ptr_in, uns len_in);
-int lizard_bbcopy_compress(struct fastbuf *fb_out, struct fastbuf *fb_in, uns len_in);
-int lizard_memread(struct lizard_buffer *liz_buf, byte *ptr_in, byte **ptr_out, uns *type);
-int lizard_bread(struct lizard_buffer *liz_buf, struct fastbuf *fb_in, byte **ptr_out, uns *type);
-  /* These functions use static variables, hence they are not re-entrant.  */
-
 #endif