big_alloc() now takes a 64-bit argument.

[libucw.git] / lib / fastbuf.c

diff --git a/lib/fastbuf.c b/lib/fastbuf.c
index d976730d2b7affb829a2b4322e0f7ca57b2abb54..980d53aa619ceb0509d64987ef57765dc8f42199 100644 (file)
--- a/lib/fastbuf.c
+++ b/lib/fastbuf.c
@@ -1,7 +1,7 @@
 /*
 /*

- *     Sherlock Library -- Fast Buffered I/O
+ *     UCW Library -- Fast Buffered I/O

  *
  *

- *     (c) 1997--2000 Martin Mares <mj@ucw.cz>
+ *     (c) 1997--2006 Martin Mares <mj@ucw.cz>

  *
  *     This software may be freely distributed and used according to the terms
  *     of the GNU Lesser General Public License.
  *
  *     This software may be freely distributed and used according to the terms
  *     of the GNU Lesser General Public License.


@@ -84,112 +84,6 @@ void bputc_slow(struct fastbuf *f, uns c)
   *f->bptr++ = c;
 }
 
   *f->bptr++ = c;
 }
 

-int bgetw_slow(struct fastbuf *f)
-{
-  int w1, w2;
-  w1 = bgetc_slow(f);
-  if (w1 < 0)
-    return w1;
-  w2 = bgetc_slow(f);
-  if (w2 < 0)
-    return w2;
-#ifdef CPU_BIG_ENDIAN
-  return (w1 << 8) | w2;
-#else
-  return w1 | (w2 << 8);
-#endif
-}
-
-u32 bgetl_slow(struct fastbuf *f)
-{
-  u32 l = bgetc_slow(f);
-#ifdef CPU_BIG_ENDIAN
-  l = (l << 8) | bgetc_slow(f);
-  l = (l << 8) | bgetc_slow(f);
-  return (l << 8) | bgetc_slow(f);
-#else
-  l = (bgetc_slow(f) << 8) | l;
-  l = (bgetc_slow(f) << 16) | l;
-  return (bgetc_slow(f) << 24) | l;
-#endif
-}
-
-u64 bgetq_slow(struct fastbuf *f)
-{
-  u32 l, h;
-#ifdef CPU_BIG_ENDIAN
-  h = bgetl_slow(f);
-  l = bgetl_slow(f);
-#else
-  l = bgetl_slow(f);
-  h = bgetl_slow(f);
-#endif
-  return ((u64) h << 32) | l;
-}
-
-u64 bget5_slow(struct fastbuf *f)
-{
-  u32 l, h;
-#ifdef CPU_BIG_ENDIAN
-  h = bgetc_slow(f);
-  l = bgetl_slow(f);
-#else
-  l = bgetl_slow(f);
-  h = bgetc_slow(f);
-#endif
-  return ((u64) h << 32) | l;
-}
-
-void bputw_slow(struct fastbuf *f, uns w)
-{
-#ifdef CPU_BIG_ENDIAN
-  bputc_slow(f, w >> 8);
-  bputc_slow(f, w);
-#else
-  bputc_slow(f, w);
-  bputc_slow(f, w >> 8);
-#endif
-}
-
-void bputl_slow(struct fastbuf *f, u32 l)
-{
-#ifdef CPU_BIG_ENDIAN
-  bputc_slow(f, l >> 24);
-  bputc_slow(f, l >> 16);
-  bputc_slow(f, l >> 8);
-  bputc_slow(f, l);
-#else
-  bputc_slow(f, l);
-  bputc_slow(f, l >> 8);
-  bputc_slow(f, l >> 16);
-  bputc_slow(f, l >> 24);
-#endif
-}
-
-void bputq_slow(struct fastbuf *f, u64 q)
-{
-#ifdef CPU_BIG_ENDIAN
-  bputl_slow(f, q >> 32);
-  bputl_slow(f, q);
-#else
-  bputl_slow(f, q);
-  bputl_slow(f, q >> 32);
-#endif
-}
-
-void bput5_slow(struct fastbuf *f, u64 o)
-{
-  u32 hi = o >> 32;
-  u32 low = o;
-#ifdef CPU_BIG_ENDIAN
-  bputc_slow(f, hi);
-  bputl_slow(f, low);
-#else
-  bputl_slow(f, low);
-  bputc_slow(f, hi);
-#endif
-}
-

 uns bread_slow(struct fastbuf *f, void *b, uns l, uns check)
 {
   uns total = 0;
 uns bread_slow(struct fastbuf *f, void *b, uns l, uns check)
 {
   uns total = 0;


@@ -237,50 +131,6 @@ void bwrite_slow(struct fastbuf *f, void *b, uns l)
     }
 }
 
     }
 }
 

-byte *                                 /* Non-standard */
-bgets(struct fastbuf *f, byte *b, uns l)
-{
-  byte *e = b + l - 1;
-  int k;
-
-  k = bgetc(f);
-  if (k == EOF)
-    return NULL;
-  while (b < e)
-    {
-      if (k == '\n' || k == EOF)
-       {
-         *b = 0;
-         return b;
-       }
-      *b++ = k;
-      k = bgetc(f);
-    }
-  die("%s: Line too long", f->name);
-}
-
-byte *
-bgets0(struct fastbuf *f, byte *b, uns l)
-{
-  byte *e = b + l - 1;
-  int k;
-
-  k = bgetc(f);
-  if (k == EOF)
-    return NULL;
-  while (b < e)
-    {
-      if (!k || k == EOF)
-       {
-         *b = 0;
-         return b;
-       }
-      *b++ = k;
-      k = bgetc(f);
-    }
-  die("%s: Line too long", f->name);
-}
-

 void
 bbcopy_slow(struct fastbuf *f, struct fastbuf *t, uns l)
 {
 void
 bbcopy_slow(struct fastbuf *f, struct fastbuf *t, uns l)
 {


@@ -290,14 +140,60 @@ bbcopy_slow(struct fastbuf *f, struct fastbuf *t, uns l)
       uns favail, tavail, n;
 
       favail = bdirect_read_prepare(f, &fptr);
       uns favail, tavail, n;
 
       favail = bdirect_read_prepare(f, &fptr);

-      if (favail == (uns)EOF)
-       die("bbcopy: source exhausted");
+      if (!favail)
+       {
+         if (l == ~0U)
+           return;
+         die("bbcopy: source exhausted");
+       }

       tavail = bdirect_write_prepare(t, &tptr);
       n = MIN(l, favail);
       n = MIN(n, tavail);
       memcpy(tptr, fptr, n);
       bdirect_read_commit(f, fptr + n);
       bdirect_write_commit(t, tptr + n);
       tavail = bdirect_write_prepare(t, &tptr);
       n = MIN(l, favail);
       n = MIN(n, tavail);
       memcpy(tptr, fptr, n);
       bdirect_read_commit(f, fptr + n);
       bdirect_write_commit(t, tptr + n);

-      l -= n;
+      if (l != ~0U)
+       l -= n;
+    }
+}
+
+int
+bconfig(struct fastbuf *f, uns item, int value)
+{
+  return f->config ? f->config(f, item, value) : -1;
+}
+
+void
+brewind(struct fastbuf *f)
+{
+  bflush(f);
+  bsetpos(f, 0);
+}
+
+int
+bskip_slow(struct fastbuf *f, uns len)
+{
+  while (len)
+    {
+      byte *buf;
+      uns l = bdirect_read_prepare(f, &buf);
+      if (!l)
+       return 0;
+      l = MIN(l, len);
+      bdirect_read_commit(f, buf+l);
+      len -= l;

     }
     }

+  return 1;
+}
+
+sh_off_t
+bfilesize(struct fastbuf *f)
+{
+  if (!f)
+    return 0;
+  sh_off_t pos = btell(f);
+  bseek(f, 0, SEEK_END);
+  sh_off_t len = btell(f);
+  bsetpos(f, pos);
+  return len;

 }
 }