/* This file is part of the Zebra server.
- Copyright (C) 1994-2009 Index Data
+ Copyright (C) 1994-2011 Index Data
Zebra is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
#if HAVE_BZLIB_H
#include <bzlib.h>
#endif
+#if HAVE_ZLIB_H
+#include <zlib.h>
+#endif
#define REC_BLOCK_TYPES 2
#define REC_HEAD_MAGIC "recindex"
return ZEBRA_OK;
}
+int rec_check_compression_method(int compression_method)
+{
+ switch(compression_method)
+ {
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ return 1;
+#else
+ return 0;
+#endif
+ case REC_COMPRESS_BZIP2:
+#if HAVE_BZLIB_H
+ return 1;
+#else
+ return 0;
+#endif
+ case REC_COMPRESS_NONE:
+ return 1;
+ }
+ return 0;
+}
+
Records rec_open(BFiles bfs, int rw, int compression_method)
{
Records p;
char compression_method = p->compression_method;
switch (compression_method)
{
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ csize = out_offset + (out_offset >> 6) + 620;
+ while (1)
+ {
+ int r;
+ uLongf destLen = csize;
+ rec_tmp_expand(p, csize);
+ r = compress((Bytef *) p->tmp_buf+sizeof(zint)+sizeof(short)+
+ sizeof(char),
+ &destLen, (const Bytef *) out_buf, out_offset);
+ csize = destLen;
+ if (r == Z_OK)
+ {
+ break;
+ }
+ if (r != Z_MEM_ERROR)
+ {
+ yaz_log(YLOG_WARN, "compress error: %d", r);
+ csize = 0;
+ break;
+ }
+ csize = csize * 2;
+ }
+#endif
+ break;
case REC_COMPRESS_BZIP2:
#if HAVE_BZLIB_H
csize = out_offset + (out_offset >> 6) + 620;
yaz_log(YLOG_WARN, "bzBuffToBuffCompress error code=%d", i);
csize = 0;
}
- yaz_log(YLOG_LOG, "compress %4d %5d %5d", ref_count, out_offset,
- csize);
#endif
break;
case REC_COMPRESS_NONE:
char *nptr, *cptr;
char *in_buf = 0;
char *bz_buf = 0;
-#if HAVE_BZLIB_H
- unsigned int bz_size;
-#endif
char compression_method;
assert(sysno > 0);
in_size = entry.size - sizeof(short) - sizeof(char);
switch (compression_method)
{
+ case REC_COMPRESS_ZLIB:
+#if HAVE_ZLIB_H
+ if (1)
+ {
+ unsigned int bz_size = entry.size * 20 + 100;
+ while (1)
+ {
+ uLongf destLen = bz_size;
+ bz_buf = (char *) xmalloc(bz_size);
+ i = uncompress((Bytef *) bz_buf, &destLen,
+ (const Bytef *) in_buf, in_size);
+ if (i == Z_OK)
+ {
+ bz_size = destLen;
+ break;
+ }
+ yaz_log(YLOG_LOG, "failed");
+ xfree(bz_buf);
+ bz_size *= 2;
+ }
+ in_buf = bz_buf;
+ in_size = bz_size;
+ }
+#else
+ yaz_log(YLOG_FATAL, "cannot decompress record(s) in ZLIB format");
+ return 0;
+#endif
+ break;
case REC_COMPRESS_BZIP2:
#if HAVE_BZLIB_H
- bz_size = entry.size * 20 + 100;
- while (1)
- {
- bz_buf = (char *) xmalloc(bz_size);
+ if (1)
+ {
+ unsigned int bz_size = entry.size * 20 + 100;
+ while (1)
+ {
+ bz_buf = (char *) xmalloc(bz_size);
#ifdef BZ_CONFIG_ERROR
- i = BZ2_bzBuffToBuffDecompress
+ i = BZ2_bzBuffToBuffDecompress
#else
- i = bzBuffToBuffDecompress
+ i = bzBuffToBuffDecompress
#endif
- (bz_buf, &bz_size, in_buf, in_size, 0, 0);
- yaz_log(YLOG_LOG, "decompress %5d %5d", in_size, bz_size);
- if (i == BZ_OK)
- break;
- yaz_log(YLOG_LOG, "failed");
- xfree(bz_buf);
- bz_size *= 2;
- }
- in_buf = bz_buf;
- in_size = bz_size;
+ (bz_buf, &bz_size, in_buf, in_size, 0, 0);
+ if (i == BZ_OK)
+ break;
+ yaz_log(YLOG_LOG, "failed");
+ xfree(bz_buf);
+ bz_size *= 2;
+ }
+ in_buf = bz_buf;
+ in_size = bz_size;
+ }
#else
yaz_log(YLOG_FATAL, "cannot decompress record(s) in BZIP2 format");
return 0;
return rec_get(p, rec_sysno_to_ext(1));
}
+Record rec_get_next(Records p, Record rec)
+{
+ Record next = 0;
+ zint next_sysno_int = rec_sysno_to_int(rec->sysno);
+
+ while (!next)
+ {
+ ++next_sysno_int;
+ if (next_sysno_int == p->head.index_last)
+ break;
+ next = rec_get(p, rec_sysno_to_ext(next_sysno_int));
+ }
+ return next;
+}
+
static Record rec_new_int(Records p)
{
int i;