+ Fixed crash when TMPQFile failed to allocate

+ ZLIB updated

1 files changed, 85 insertions, 183 deletions

diff --git a/src/zlib/deflate.c b/src/zlib/deflate.c
index 5c4022f..29ce1f6 100644
--- a/src/zlib/deflate.c
+++ b/src/zlib/deflate.c
@@ -1,5 +1,5 @@
 /* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
+ * Copyright (C) 1995-2005 Jean-loup Gailly.
  * For conditions of distribution and use, see copyright notice in zlib.h
  */
 
@@ -52,7 +52,7 @@
 #include "deflate.h"
 
 const char deflate_copyright[] =
-   " deflate 1.2.5 Copyright 1995-2010 Jean-loup Gailly and Mark Adler ";
+   " deflate 1.2.3 Copyright 1995-2005 Jean-loup Gailly ";
 /*
   If you use the zlib library in a product, an acknowledgment is welcome
   in the documentation of your product. If for some reason you cannot
@@ -79,18 +79,19 @@ local block_state deflate_fast   OF((deflate_state *s, int flush));
 #ifndef FASTEST
 local block_state deflate_slow   OF((deflate_state *s, int flush));
 #endif
-local block_state deflate_rle    OF((deflate_state *s, int flush));
-local block_state deflate_huff   OF((deflate_state *s, int flush));
 local void lm_init        OF((deflate_state *s));
 local void putShortMSB    OF((deflate_state *s, uInt b));
 local void flush_pending  OF((z_streamp strm));
 local int read_buf        OF((z_streamp strm, Bytef *buf, unsigned size));
+#ifndef FASTEST
 #ifdef ASMV
       void match_init OF((void)); /* asm code initialization */
       uInt longest_match  OF((deflate_state *s, IPos cur_match));
 #else
 local uInt longest_match  OF((deflate_state *s, IPos cur_match));
 #endif
+#endif
+local uInt longest_match_fast OF((deflate_state *s, IPos cur_match));
 
 #ifdef DEBUG
 local  void check_match OF((deflate_state *s, IPos start, IPos match,
@@ -109,6 +110,11 @@ local  void check_match OF((deflate_state *s, IPos start, IPos match,
 #endif
 /* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
 
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
 /* Values for max_lazy_match, good_match and max_chain_length, depending on
  * the desired pack level (0..9). The values given below have been tuned to
  * exclude worst case performance for pathological files. Better values may be
@@ -282,8 +288,6 @@ int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
     s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
     s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
 
-    s->high_water = 0;      /* nothing written to s->window yet */
-
     s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
 
     overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
@@ -328,8 +332,8 @@ int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
         strm->adler = adler32(strm->adler, dictionary, dictLength);
 
     if (length < MIN_MATCH) return Z_OK;
-    if (length > s->w_size) {
-        length = s->w_size;
+    if (length > MAX_DIST(s)) {
+        length = MAX_DIST(s);
         dictionary += dictLength - length; /* use the tail of the dictionary */
     }
     zmemcpy(s->window, dictionary, length);
@@ -431,10 +435,9 @@ int ZEXPORT deflateParams(strm, level, strategy)
     }
     func = configuration_table[s->level].func;
 
-    if ((strategy != s->strategy || func != configuration_table[level].func) &&
-        strm->total_in != 0) {
+    if (func != configuration_table[level].func && strm->total_in != 0) {
         /* Flush the last buffer: */
-        err = deflate(strm, Z_BLOCK);
+        err = deflate(strm, Z_PARTIAL_FLUSH);
     }
     if (s->level != level) {
         s->level = level;
@@ -478,66 +481,33 @@ int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
  * resulting from using fixed blocks instead of stored blocks, which deflate
  * can emit on compressed data for some combinations of the parameters.
  *
- * This function could be more sophisticated to provide closer upper bounds for
- * every combination of windowBits and memLevel.  But even the conservative
- * upper bound of about 14% expansion does not seem onerous for output buffer
- * allocation.
+ * This function could be more sophisticated to provide closer upper bounds
+ * for every combination of windowBits and memLevel, as well as wrap.
+ * But even the conservative upper bound of about 14% expansion does not
+ * seem onerous for output buffer allocation.
  */
 uLong ZEXPORT deflateBound(strm, sourceLen)
     z_streamp strm;
     uLong sourceLen;
 {
     deflate_state *s;
-    uLong complen, wraplen;
-    Bytef *str;
+    uLong destLen;
 
-    /* conservative upper bound for compressed data */
-    complen = sourceLen +
-              ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
+    /* conservative upper bound */
+    destLen = sourceLen +
+              ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 11;
 
-    /* if can't get parameters, return conservative bound plus zlib wrapper */
+    /* if can't get parameters, return conservative bound */
     if (strm == Z_NULL || strm->state == Z_NULL)
-        return complen + 6;
-
-    /* compute wrapper length */
-    s = strm->state;
-    switch (s->wrap) {
-    case 0:                                 /* raw deflate */
-        wraplen = 0;
-        break;
-    case 1:                                 /* zlib wrapper */
-        wraplen = 6 + (s->strstart ? 4 : 0);
-        break;
-    case 2:                                 /* gzip wrapper */
-        wraplen = 18;
-        if (s->gzhead != Z_NULL) {          /* user-supplied gzip header */
-            if (s->gzhead->extra != Z_NULL)
-                wraplen += 2 + s->gzhead->extra_len;
-            str = s->gzhead->name;
-            if (str != Z_NULL)
-                do {
-                    wraplen++;
-                } while (*str++);
-            str = s->gzhead->comment;
-            if (str != Z_NULL)
-                do {
-                    wraplen++;
-                } while (*str++);
-            if (s->gzhead->hcrc)
-                wraplen += 2;
-        }
-        break;
-    default:                                /* for compiler happiness */
-        wraplen = 6;
-    }
+        return destLen;
 
     /* if not default parameters, return conservative bound */
+    s = strm->state;
     if (s->w_bits != 15 || s->hash_bits != 8 + 7)
-        return complen + wraplen;
+        return destLen;
 
     /* default settings: return tight bound for that case */
-    return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
-           (sourceLen >> 25) + 13 - 6 + wraplen;
+    return compressBound(sourceLen);
 }
 
 /* =========================================================================
@@ -587,7 +557,7 @@ int ZEXPORT deflate (strm, flush)
     deflate_state *s;
 
     if (strm == Z_NULL || strm->state == Z_NULL ||
-        flush > Z_BLOCK || flush < 0) {
+        flush > Z_FINISH || flush < 0) {
         return Z_STREAM_ERROR;
     }
     s = strm->state;
@@ -611,7 +581,7 @@ int ZEXPORT deflate (strm, flush)
             put_byte(s, 31);
             put_byte(s, 139);
             put_byte(s, 8);
-            if (s->gzhead == Z_NULL) {
+            if (s->gzhead == NULL) {
                 put_byte(s, 0);
                 put_byte(s, 0);
                 put_byte(s, 0);
@@ -638,7 +608,7 @@ int ZEXPORT deflate (strm, flush)
                             (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
                              4 : 0));
                 put_byte(s, s->gzhead->os & 0xff);
-                if (s->gzhead->extra != Z_NULL) {
+                if (s->gzhead->extra != NULL) {
                     put_byte(s, s->gzhead->extra_len & 0xff);
                     put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
                 }
@@ -680,7 +650,7 @@ int ZEXPORT deflate (strm, flush)
     }
 #ifdef GZIP
     if (s->status == EXTRA_STATE) {
-        if (s->gzhead->extra != Z_NULL) {
+        if (s->gzhead->extra != NULL) {
             uInt beg = s->pending;  /* start of bytes to update crc */
 
             while (s->gzindex < (s->gzhead->extra_len & 0xffff)) {
@@ -708,7 +678,7 @@ int ZEXPORT deflate (strm, flush)
             s->status = NAME_STATE;
     }
     if (s->status == NAME_STATE) {
-        if (s->gzhead->name != Z_NULL) {
+        if (s->gzhead->name != NULL) {
             uInt beg = s->pending;  /* start of bytes to update crc */
             int val;
 
@@ -739,7 +709,7 @@ int ZEXPORT deflate (strm, flush)
             s->status = COMMENT_STATE;
     }
     if (s->status == COMMENT_STATE) {
-        if (s->gzhead->comment != Z_NULL) {
+        if (s->gzhead->comment != NULL) {
             uInt beg = s->pending;  /* start of bytes to update crc */
             int val;
 
@@ -817,9 +787,7 @@ int ZEXPORT deflate (strm, flush)
         (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
         block_state bstate;
 
-        bstate = s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
-                    (s->strategy == Z_RLE ? deflate_rle(s, flush) :
-                        (*(configuration_table[s->level].func))(s, flush));
+        bstate = (*(configuration_table[s->level].func))(s, flush);
 
         if (bstate == finish_started || bstate == finish_done) {
             s->status = FINISH_STATE;
@@ -840,17 +808,13 @@ int ZEXPORT deflate (strm, flush)
         if (bstate == block_done) {
             if (flush == Z_PARTIAL_FLUSH) {
                 _tr_align(s);
-            } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
+            } else { /* FULL_FLUSH or SYNC_FLUSH */
                 _tr_stored_block(s, (char*)0, 0L, 0);
                 /* For a full flush, this empty block will be recognized
                  * as a special marker by inflate_sync().
                  */
                 if (flush == Z_FULL_FLUSH) {
                     CLEAR_HASH(s);             /* forget history */
-                    if (s->lookahead == 0) {
-                        s->strstart = 0;
-                        s->block_start = 0L;
-                    }
                 }
             }
             flush_pending(strm);
@@ -1203,13 +1167,12 @@ local uInt longest_match(s, cur_match)
     return s->lookahead;
 }
 #endif /* ASMV */
-
-#else /* FASTEST */
+#endif /* FASTEST */
 
 /* ---------------------------------------------------------------------------
- * Optimized version for FASTEST only
+ * Optimized version for level == 1 or strategy == Z_RLE only
  */
-local uInt longest_match(s, cur_match)
+local uInt longest_match_fast(s, cur_match)
     deflate_state *s;
     IPos cur_match;                             /* current match */
 {
@@ -1262,8 +1225,6 @@ local uInt longest_match(s, cur_match)
     return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
 }
 
-#endif /* FASTEST */
-
 #ifdef DEBUG
 /* ===========================================================================
  * Check that the match at match_start is indeed a match.
@@ -1342,6 +1303,7 @@ local void fill_window(s)
                later. (Using level 0 permanently is not an optimal usage of
                zlib, so we don't care about this pathological case.)
              */
+            /* %%% avoid this when Z_RLE */
             n = s->hash_size;
             p = &s->head[n];
             do {
@@ -1393,61 +1355,27 @@ local void fill_window(s)
          */
 
     } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
-
-    /* If the WIN_INIT bytes after the end of the current data have never been
-     * written, then zero those bytes in order to avoid memory check reports of
-     * the use of uninitialized (or uninitialised as Julian writes) bytes by
-     * the longest match routines.  Update the high water mark for the next
-     * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
-     * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
-     */
-    if (s->high_water < s->window_size) {
-        ulg curr = s->strstart + (ulg)(s->lookahead);
-        ulg init;
-
-        if (s->high_water < curr) {
-            /* Previous high water mark below current data -- zero WIN_INIT
-             * bytes or up to end of window, whichever is less.
-             */
-            init = s->window_size - curr;
-            if (init > WIN_INIT)
-                init = WIN_INIT;
-            zmemzero(s->window + curr, (unsigned)init);
-            s->high_water = curr + init;
-        }
-        else if (s->high_water < (ulg)curr + WIN_INIT) {
-            /* High water mark at or above current data, but below current data
-             * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
-             * to end of window, whichever is less.
-             */
-            init = (ulg)curr + WIN_INIT - s->high_water;
-            if (init > s->window_size - s->high_water)
-                init = s->window_size - s->high_water;
-            zmemzero(s->window + s->high_water, (unsigned)init);
-            s->high_water += init;
-        }
-    }
 }
 
 /* ===========================================================================
  * Flush the current block, with given end-of-file flag.
  * IN assertion: strstart is set to the end of the current match.
  */
-#define FLUSH_BLOCK_ONLY(s, last) { \
+#define FLUSH_BLOCK_ONLY(s, eof) { \
    _tr_flush_block(s, (s->block_start >= 0L ? \
                    (charf *)&s->window[(unsigned)s->block_start] : \
                    (charf *)Z_NULL), \
                 (ulg)((long)s->strstart - s->block_start), \
-                (last)); \
+                (eof)); \
    s->block_start = s->strstart; \
    flush_pending(s->strm); \
    Tracev((stderr,"[FLUSH]")); \
 }
 
 /* Same but force premature exit if necessary. */
-#define FLUSH_BLOCK(s, last) { \
-   FLUSH_BLOCK_ONLY(s, last); \
-   if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
+#define FLUSH_BLOCK(s, eof) { \
+   FLUSH_BLOCK_ONLY(s, eof); \
+   if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
 }
 
 /* ===========================================================================
@@ -1521,7 +1449,7 @@ local block_state deflate_fast(s, flush)
     deflate_state *s;
     int flush;
 {
-    IPos hash_head;       /* head of the hash chain */
+    IPos hash_head = NIL; /* head of the hash chain */
     int bflush;           /* set if current block must be flushed */
 
     for (;;) {
@@ -1541,7 +1469,6 @@ local block_state deflate_fast(s, flush)
         /* Insert the string window[strstart .. strstart+2] in the
          * dictionary, and set hash_head to the head of the hash chain:
          */
-        hash_head = NIL;
         if (s->lookahead >= MIN_MATCH) {
             INSERT_STRING(s, s->strstart, hash_head);
         }
@@ -1554,8 +1481,19 @@ local block_state deflate_fast(s, flush)
              * of window index 0 (in particular we have to avoid a match
              * of the string with itself at the start of the input file).
              */
-            s->match_length = longest_match (s, hash_head);
-            /* longest_match() sets match_start */
+#ifdef FASTEST
+            if ((s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) ||
+                (s->strategy == Z_RLE && s->strstart - hash_head == 1)) {
+                s->match_length = longest_match_fast (s, hash_head);
+            }
+#else
+            if (s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) {
+                s->match_length = longest_match (s, hash_head);
+            } else if (s->strategy == Z_RLE && s->strstart - hash_head == 1) {
+                s->match_length = longest_match_fast (s, hash_head);
+            }
+#endif
+            /* longest_match() or longest_match_fast() sets match_start */
         }
         if (s->match_length >= MIN_MATCH) {
             check_match(s, s->strstart, s->match_start, s->match_length);
@@ -1617,7 +1555,7 @@ local block_state deflate_slow(s, flush)
     deflate_state *s;
     int flush;
 {
-    IPos hash_head;          /* head of hash chain */
+    IPos hash_head = NIL;    /* head of hash chain */
     int bflush;              /* set if current block must be flushed */
 
     /* Process the input block. */
@@ -1638,7 +1576,6 @@ local block_state deflate_slow(s, flush)
         /* Insert the string window[strstart .. strstart+2] in the
          * dictionary, and set hash_head to the head of the hash chain:
          */
-        hash_head = NIL;
         if (s->lookahead >= MIN_MATCH) {
             INSERT_STRING(s, s->strstart, hash_head);
         }
@@ -1654,8 +1591,12 @@ local block_state deflate_slow(s, flush)
              * of window index 0 (in particular we have to avoid a match
              * of the string with itself at the start of the input file).
              */
-            s->match_length = longest_match (s, hash_head);
-            /* longest_match() sets match_start */
+            if (s->strategy != Z_HUFFMAN_ONLY && s->strategy != Z_RLE) {
+                s->match_length = longest_match (s, hash_head);
+            } else if (s->strategy == Z_RLE && s->strstart - hash_head == 1) {
+                s->match_length = longest_match_fast (s, hash_head);
+            }
+            /* longest_match() or longest_match_fast() sets match_start */
 
             if (s->match_length <= 5 && (s->strategy == Z_FILTERED
 #if TOO_FAR <= 32767
@@ -1733,6 +1674,7 @@ local block_state deflate_slow(s, flush)
 }
 #endif /* FASTEST */
 
+#if 0
 /* ===========================================================================
  * For Z_RLE, simply look for runs of bytes, generate matches only of distance
  * one.  Do not maintain a hash table.  (It will be regenerated if this run of
@@ -1742,9 +1684,11 @@ local block_state deflate_rle(s, flush)
     deflate_state *s;
     int flush;
 {
-    int bflush;             /* set if current block must be flushed */
-    uInt prev;              /* byte at distance one to match */
-    Bytef *scan, *strend;   /* scan goes up to strend for length of run */
+    int bflush;         /* set if current block must be flushed */
+    uInt run;           /* length of run */
+    uInt max;           /* maximum length of run */
+    uInt prev;          /* byte at distance one to match */
+    Bytef *scan;        /* scan for end of run */
 
     for (;;) {
         /* Make sure that we always have enough lookahead, except
@@ -1760,33 +1704,23 @@ local block_state deflate_rle(s, flush)
         }
 
         /* See how many times the previous byte repeats */
-        s->match_length = 0;
-        if (s->lookahead >= MIN_MATCH && s->strstart > 0) {
+        run = 0;
+        if (s->strstart > 0) {      /* if there is a previous byte, that is */
+            max = s->lookahead < MAX_MATCH ? s->lookahead : MAX_MATCH;
             scan = s->window + s->strstart - 1;
-            prev = *scan;
-            if (prev == *++scan && prev == *++scan && prev == *++scan) {
-                strend = s->window + s->strstart + MAX_MATCH;
-                do {
-                } while (prev == *++scan && prev == *++scan &&
-                         prev == *++scan && prev == *++scan &&
-                         prev == *++scan && prev == *++scan &&
-                         prev == *++scan && prev == *++scan &&
-                         scan < strend);
-                s->match_length = MAX_MATCH - (int)(strend - scan);
-                if (s->match_length > s->lookahead)
-                    s->match_length = s->lookahead;
-            }
+            prev = *scan++;
+            do {
+                if (*scan++ != prev)
+                    break;
+            } while (++run < max);
         }
 
         /* Emit match if have run of MIN_MATCH or longer, else emit literal */
-        if (s->match_length >= MIN_MATCH) {
-            check_match(s, s->strstart, s->strstart - 1, s->match_length);
-
-            _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);
-
-            s->lookahead -= s->match_length;
-            s->strstart += s->match_length;
-            s->match_length = 0;
+        if (run >= MIN_MATCH) {
+            check_match(s, s->strstart, s->strstart - 1, run);
+            _tr_tally_dist(s, 1, run - MIN_MATCH, bflush);
+            s->lookahead -= run;
+            s->strstart += run;
         } else {
             /* No match, output a literal byte */
             Tracevv((stderr,"%c", s->window[s->strstart]));
@@ -1799,36 +1733,4 @@ local block_state deflate_rle(s, flush)
     FLUSH_BLOCK(s, flush == Z_FINISH);
     return flush == Z_FINISH ? finish_done : block_done;
 }
-
-/* ===========================================================================
- * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
- * (It will be regenerated if this run of deflate switches away from Huffman.)
- */
-local block_state deflate_huff(s, flush)
-    deflate_state *s;
-    int flush;
-{
-    int bflush;             /* set if current block must be flushed */
-
-    for (;;) {
-        /* Make sure that we have a literal to write. */
-        if (s->lookahead == 0) {
-            fill_window(s);
-            if (s->lookahead == 0) {
-                if (flush == Z_NO_FLUSH)
-                    return need_more;
-                break;      /* flush the current block */
-            }
-        }
-
-        /* Output a literal byte */
-        s->match_length = 0;
-        Tracevv((stderr,"%c", s->window[s->strstart]));
-        _tr_tally_lit (s, s->window[s->strstart], bflush);
-        s->lookahead--;
-        s->strstart++;
-        if (bflush) FLUSH_BLOCK(s, 0);
-    }
-    FLUSH_BLOCK(s, flush == Z_FINISH);
-    return flush == Z_FINISH ? finish_done : block_done;
-}
+#endif