1 files changed, 150 insertions, 148 deletions

diff --git a/gzio.c b/gzio.c
index 3337353..1f561ac 100644
--- a/gzio.c
+++ b/gzio.c
@@ -117,17 +117,19 @@ local gzFile gz_open (path, mode, fd)
         if (*p == 'r') s->mode = 'r';
         if (*p == 'w' || *p == 'a') s->mode = 'w';
         if (*p >= '0' && *p <= '9') {
-            level = *p - '0';
-        } else if (*p == 'f') {
-          strategy = Z_FILTERED;
-        } else if (*p == 'h') {
-          strategy = Z_HUFFMAN_ONLY;
-        } else {
-            *m++ = *p; /* copy the mode */
-        }
+            level = *p - '0';
+        } else if (*p == 'f') {
+          strategy = Z_FILTERED;
+        } else if (*p == 'h') {
+          strategy = Z_HUFFMAN_ONLY;
+        } else if (*p == 'R') {
+          strategy = Z_RLE;
+        } else {
+            *m++ = *p; /* copy the mode */
+        }
     } while (*p++ && m != fmode + sizeof(fmode));
     if (s->mode == '\0') return destroy(s), (gzFile)Z_NULL;
-    
+
     if (s->mode == 'w') {
 #ifdef NO_DEFLATE
         err = Z_STREAM_ERROR;
@@ -168,17 +170,17 @@ local gzFile gz_open (path, mode, fd)
          */
         fprintf(s->file, "%c%c%c%c%c%c%c%c%c%c", gz_magic[0], gz_magic[1],
              Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE);
-        s->startpos = 10L;
-        /* We use 10L instead of ftell(s->file) to because ftell causes an
+        s->startpos = 10L;
+        /* We use 10L instead of ftell(s->file) to because ftell causes an
          * fflush on some systems. This version of the library doesn't use
          * startpos anyway in write mode, so this initialization is not
          * necessary.
          */
     } else {
-        check_header(s); /* skip the .gz header */
-        s->startpos = (ftell(s->file) - s->stream.avail_in);
+        check_header(s); /* skip the .gz header */
+        s->startpos = (ftell(s->file) - s->stream.avail_in);
     }
-    
+
     return (gzFile)s;
 }
 
@@ -223,11 +225,11 @@ int ZEXPORT gzsetparams (file, level, strategy)
     /* Make room to allow flushing */
     if (s->stream.avail_out == 0) {
 
-        s->stream.next_out = s->outbuf;
-        if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
-            s->z_err = Z_ERRNO;
-        }
-        s->stream.avail_out = Z_BUFSIZE;
+        s->stream.next_out = s->outbuf;
+        if (fwrite(s->outbuf, 1, Z_BUFSIZE, s->file) != Z_BUFSIZE) {
+            s->z_err = Z_ERRNO;
+        }
+        s->stream.avail_out = Z_BUFSIZE;
     }
 
     return deflateParams (&(s->stream), level, strategy);
@@ -243,14 +245,14 @@ local int get_byte(s)
 {
     if (s->z_eof) return EOF;
     if (s->stream.avail_in == 0) {
-        errno = 0;
-        s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);
-        if (s->stream.avail_in == 0) {
-            s->z_eof = 1;
-            if (ferror(s->file)) s->z_err = Z_ERRNO;
-            return EOF;
-        }
-        s->stream.next_in = s->inbuf;
+        errno = 0;
+        s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);
+        if (s->stream.avail_in == 0) {
+            s->z_eof = 1;
+            if (ferror(s->file)) s->z_err = Z_ERRNO;
+            return EOF;
+        }
+        s->stream.next_in = s->inbuf;
     }
     s->stream.avail_in--;
     return *(s->stream.next_in)++;
@@ -292,7 +294,7 @@ local void check_header(s)
 
     /* Peek ahead to check the gzip magic header */
     if (s->stream.next_in[0] != gz_magic[0] ||
-        s->stream.next_in[1] != gz_magic[1]) {
+        s->stream.next_in[1] != gz_magic[1]) {
         s->transparent = 1;
         return;
     }
@@ -303,27 +305,27 @@ local void check_header(s)
     method = get_byte(s);
     flags = get_byte(s);
     if (method != Z_DEFLATED || (flags & RESERVED) != 0) {
-        s->z_err = Z_DATA_ERROR;
-        return;
+        s->z_err = Z_DATA_ERROR;
+        return;
     }
 
     /* Discard time, xflags and OS code: */
     for (len = 0; len < 6; len++) (void)get_byte(s);
 
     if ((flags & EXTRA_FIELD) != 0) { /* skip the extra field */
-        len  =  (uInt)get_byte(s);
-        len += ((uInt)get_byte(s))<<8;
-        /* len is garbage if EOF but the loop below will quit anyway */
-        while (len-- != 0 && get_byte(s) != EOF) ;
+        len  =  (uInt)get_byte(s);
+        len += ((uInt)get_byte(s))<<8;
+        /* len is garbage if EOF but the loop below will quit anyway */
+        while (len-- != 0 && get_byte(s) != EOF) ;
     }
     if ((flags & ORIG_NAME) != 0) { /* skip the original file name */
-        while ((c = get_byte(s)) != 0 && c != EOF) ;
+        while ((c = get_byte(s)) != 0 && c != EOF) ;
     }
     if ((flags & COMMENT) != 0) {   /* skip the .gz file comment */
-        while ((c = get_byte(s)) != 0 && c != EOF) ;
+        while ((c = get_byte(s)) != 0 && c != EOF) ;
     }
     if ((flags & HEAD_CRC) != 0) {  /* skip the header crc */
-        for (len = 0; len < 2; len++) (void)get_byte(s);
+        for (len = 0; len < 2; len++) (void)get_byte(s);
     }
     s->z_err = s->z_eof ? Z_DATA_ERROR : Z_OK;
 }
@@ -342,21 +344,21 @@ local int destroy (s)
     TRYFREE(s->msg);
 
     if (s->stream.state != NULL) {
-        if (s->mode == 'w') {
+        if (s->mode == 'w') {
 #ifdef NO_DEFLATE
-            err = Z_STREAM_ERROR;
+            err = Z_STREAM_ERROR;
 #else
-            err = deflateEnd(&(s->stream));
+            err = deflateEnd(&(s->stream));
 #endif
-        } else if (s->mode == 'r') {
-            err = inflateEnd(&(s->stream));
-        }
+        } else if (s->mode == 'r') {
+            err = inflateEnd(&(s->stream));
+        }
     }
     if (s->file != NULL && fclose(s->file)) {
 #ifdef ESPIPE
-        if (errno != ESPIPE) /* fclose is broken for pipes in HP/UX */
+        if (errno != ESPIPE) /* fclose is broken for pipes in HP/UX */
 #endif
-            err = Z_ERRNO;
+            err = Z_ERRNO;
     }
     if (s->z_err < 0) err = s->z_err;
 
@@ -391,69 +393,69 @@ int ZEXPORT gzread (file, buf, len)
 
     while (s->stream.avail_out != 0) {
 
-        if (s->transparent) {
-            /* Copy first the lookahead bytes: */
-            uInt n = s->stream.avail_in;
-            if (n > s->stream.avail_out) n = s->stream.avail_out;
-            if (n > 0) {
-                zmemcpy(s->stream.next_out, s->stream.next_in, n);
-                next_out += n;
-                s->stream.next_out = next_out;
-                s->stream.next_in   += n;
-                s->stream.avail_out -= n;
-                s->stream.avail_in  -= n;
-            }
-            if (s->stream.avail_out > 0) {
-                s->stream.avail_out -= fread(next_out, 1, s->stream.avail_out,
-                                             s->file);
-            }
-            len -= s->stream.avail_out;
-            s->stream.total_in  += (uLong)len;
-            s->stream.total_out += (uLong)len;
+        if (s->transparent) {
+            /* Copy first the lookahead bytes: */
+            uInt n = s->stream.avail_in;
+            if (n > s->stream.avail_out) n = s->stream.avail_out;
+            if (n > 0) {
+                zmemcpy(s->stream.next_out, s->stream.next_in, n);
+                next_out += n;
+                s->stream.next_out = next_out;
+                s->stream.next_in   += n;
+                s->stream.avail_out -= n;
+                s->stream.avail_in  -= n;
+            }
+            if (s->stream.avail_out > 0) {
+                s->stream.avail_out -= fread(next_out, 1, s->stream.avail_out,
+                                             s->file);
+            }
+            len -= s->stream.avail_out;
+            s->stream.total_in  += (uLong)len;
+            s->stream.total_out += (uLong)len;
             if (len == 0) s->z_eof = 1;
-            return (int)len;
-        }
+            return (int)len;
+        }
         if (s->stream.avail_in == 0 && !s->z_eof) {
 
             errno = 0;
             s->stream.avail_in = fread(s->inbuf, 1, Z_BUFSIZE, s->file);
             if (s->stream.avail_in == 0) {
                 s->z_eof = 1;
-                if (ferror(s->file)) {
-                    s->z_err = Z_ERRNO;
-                    break;
-                }
+                if (ferror(s->file)) {
+                    s->z_err = Z_ERRNO;
+                    break;
+                }
             }
             s->stream.next_in = s->inbuf;
         }
         s->z_err = inflate(&(s->stream), Z_NO_FLUSH);
 
-        if (s->z_err == Z_STREAM_END) {
-            /* Check CRC and original size */
-            s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
-            start = s->stream.next_out;
+        if (s->z_err == Z_STREAM_END) {
+            /* Check CRC and original size */
+            s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
+            start = s->stream.next_out;
 
-            if (getLong(s) != s->crc) {
-                s->z_err = Z_DATA_ERROR;
-            } else {
-                (void)getLong(s);
+            if (getLong(s) != s->crc) {
+                s->z_err = Z_DATA_ERROR;
+            } else {
+                (void)getLong(s);
                 /* The uncompressed length returned by above getlong() may
                  * be different from s->stream.total_out) in case of
-                 * concatenated .gz files. Check for such files:
-                 */
-                check_header(s);
-                if (s->z_err == Z_OK) {
-                    uLong total_in = s->stream.total_in;
-                    uLong total_out = s->stream.total_out;
-
-                    inflateReset(&(s->stream));
-                    s->stream.total_in = total_in;
-                    s->stream.total_out = total_out;
-                    s->crc = crc32(0L, Z_NULL, 0);
-                }
-            }
-        }
-        if (s->z_err != Z_OK || s->z_eof) break;
+                 * concatenated .gz files. Check for such files:
+                 */
+                check_header(s);
+                if (s->z_err == Z_OK) {
+                    uLong total_in = s->stream.total_in;
+                    uLong total_out = s->stream.total_out;
+
+                    inflateReset(&(s->stream));
+                    s->stream.total_in = total_in;
+                    s->stream.total_out = total_out;
+                    s->crc = crc32(0L, Z_NULL, 0);
+                }
+            }
+        }
+        if (s->z_err != Z_OK || s->z_eof) break;
     }
     s->crc = crc32(s->crc, start, (uInt)(s->stream.next_out - start));
 
@@ -580,11 +582,11 @@ int ZEXPORTVA gzprintf (gzFile file, const char *format, /* args */ ...)
 #else /* not ANSI C */
 
 int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
+                       a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
     gzFile file;
     const char *format;
     int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
-        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
+        a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
 {
     char buf[Z_PRINTF_BUFSIZE];
     int len;
@@ -592,25 +594,25 @@ int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
 #ifdef NO_snprintf
 #  ifdef HAS_sprintf_void
     sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
-            a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+            a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
     len = strlen(buf); /* old sprintf doesn't return the nb of bytes written */
     if (len <= 0) return 0;
 #  else
     len = sprintf(buf, format, a1, a2, a3, a4, a5, a6, a7, a8,
-                a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+                a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
     if (len <= 0 || len >= sizeof(buf))
         return 0;
 #  endif
 #else
 #  ifdef HAS_snprintf_void
     snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
-             a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+             a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
     len = strlen(buf);
     if (len <= 0)
         return 0;
 #  else
     len = snprintf(buf, sizeof(buf), format, a1, a2, a3, a4, a5, a6, a7, a8,
-                 a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
+                 a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
     if (len <= 0 || len >= sizeof(buf))
         return 0;
 #  endif
@@ -677,14 +679,14 @@ local int do_flush (file, flush)
         if (done) break;
         s->z_err = deflate(&(s->stream), flush);
 
-        /* Ignore the second of two consecutive flushes: */
-        if (len == 0 && s->z_err == Z_BUF_ERROR) s->z_err = Z_OK;
+        /* Ignore the second of two consecutive flushes: */
+        if (len == 0 && s->z_err == Z_BUF_ERROR) s->z_err = Z_OK;
 
         /* deflate has finished flushing only when it hasn't used up
-         * all the available space in the output buffer: 
+         * all the available space in the output buffer:
          */
         done = (s->stream.avail_out != 0 || s->z_err == Z_STREAM_END);
- 
+
         if (s->z_err != Z_OK && s->z_err != Z_STREAM_END) break;
     }
     return  s->z_err == Z_STREAM_END ? Z_OK : s->z_err;
@@ -719,86 +721,86 @@ z_off_t ZEXPORT gzseek (file, offset, whence)
     gz_stream *s = (gz_stream*)file;
 
     if (s == NULL || whence == SEEK_END ||
-        s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {
-        return -1L;
+        s->z_err == Z_ERRNO || s->z_err == Z_DATA_ERROR) {
+        return -1L;
     }
-    
+
     if (s->mode == 'w') {
 #ifdef NO_DEFLATE
-        return -1L;
+        return -1L;
 #else
-        if (whence == SEEK_SET) {
-            offset -= s->stream.total_in;
-        }
-        if (offset < 0) return -1L;
-
-        /* At this point, offset is the number of zero bytes to write. */
-        if (s->inbuf == Z_NULL) {
-            s->inbuf = (Byte*)ALLOC(Z_BUFSIZE); /* for seeking */
+        if (whence == SEEK_SET) {
+            offset -= s->stream.total_in;
+        }
+        if (offset < 0) return -1L;
+
+        /* At this point, offset is the number of zero bytes to write. */
+        if (s->inbuf == Z_NULL) {
+            s->inbuf = (Byte*)ALLOC(Z_BUFSIZE); /* for seeking */
             if (s->inbuf == Z_NULL) return -1L;
-            zmemzero(s->inbuf, Z_BUFSIZE);
-        }
-        while (offset > 0)  {
-            uInt size = Z_BUFSIZE;
-            if (offset < Z_BUFSIZE) size = (uInt)offset;
-
-            size = gzwrite(file, s->inbuf, size);
-            if (size == 0) return -1L;
-
-            offset -= size;
-        }
-        return (z_off_t)s->stream.total_in;
+            zmemzero(s->inbuf, Z_BUFSIZE);
+        }
+        while (offset > 0)  {
+            uInt size = Z_BUFSIZE;
+            if (offset < Z_BUFSIZE) size = (uInt)offset;
+
+            size = gzwrite(file, s->inbuf, size);
+            if (size == 0) return -1L;
+
+            offset -= size;
+        }
+        return (z_off_t)s->stream.total_in;
 #endif
     }
     /* Rest of function is for reading only */
 
     /* compute absolute position */
     if (whence == SEEK_CUR) {
-        offset += s->stream.total_out;
+        offset += s->stream.total_out;
     }
     if (offset < 0) return -1L;
 
     if (s->transparent) {
-        /* map to fseek */
-        s->stream.avail_in = 0;
-        s->stream.next_in = s->inbuf;
+        /* map to fseek */
+        s->stream.avail_in = 0;
+        s->stream.next_in = s->inbuf;
         if (fseek(s->file, offset, SEEK_SET) < 0) return -1L;
 
-        s->stream.total_in = s->stream.total_out = (uLong)offset;
-        return offset;
+        s->stream.total_in = s->stream.total_out = (uLong)offset;
+        return offset;
     }
 
     /* For a negative seek, rewind and use positive seek */
     if ((uLong)offset >= s->stream.total_out) {
-        offset -= s->stream.total_out;
+        offset -= s->stream.total_out;
     } else if (gzrewind(file) < 0) {
-        return -1L;
+        return -1L;
     }
     /* offset is now the number of bytes to skip. */
 
     if (offset != 0 && s->outbuf == Z_NULL) {
-        s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
+        s->outbuf = (Byte*)ALLOC(Z_BUFSIZE);
         if (s->outbuf == Z_NULL) return -1L;
     }
     while (offset > 0)  {
-        int size = Z_BUFSIZE;
-        if (offset < Z_BUFSIZE) size = (int)offset;
+        int size = Z_BUFSIZE;
+        if (offset < Z_BUFSIZE) size = (int)offset;
 
-        size = gzread(file, s->outbuf, (uInt)size);
-        if (size <= 0) return -1L;
-        offset -= size;
+        size = gzread(file, s->outbuf, (uInt)size);
+        if (size <= 0) return -1L;
+        offset -= size;
     }
     return (z_off_t)s->stream.total_out;
 }
 
 /* ===========================================================================
-     Rewinds input file. 
+     Rewinds input file.
 */
 int ZEXPORT gzrewind (file)
     gzFile file;
 {
     gz_stream *s = (gz_stream*)file;
-    
+
     if (s == NULL || s->mode != 'r') return -1;
 
     s->z_err = Z_OK;
@@ -806,10 +808,10 @@ int ZEXPORT gzrewind (file)
     s->stream.avail_in = 0;
     s->stream.next_in = s->inbuf;
     s->crc = crc32(0L, Z_NULL, 0);
-        
+
     if (s->startpos == 0) { /* not a compressed file */
-        rewind(s->file);
-        return 0;
+        rewind(s->file);
+        return 0;
     }
 
     (void) inflateReset(&s->stream);
@@ -835,7 +837,7 @@ int ZEXPORT gzeof (file)
     gzFile file;
 {
     gz_stream *s = (gz_stream*)file;
-    
+
     return (s == NULL || s->mode != 'r') ? 0 : s->z_eof;
 }
 
@@ -885,7 +887,7 @@ int ZEXPORT gzclose (file)
 
     if (s->mode == 'w') {
 #ifdef NO_DEFLATE
-        return Z_STREAM_ERROR;
+        return Z_STREAM_ERROR;
 #else
         err = do_flush (file, Z_FINISH);
         if (err != Z_OK) return destroy((gz_stream*)file);