2 * Copyright (c) 1995-2000, Index Data
3 * See the file LICENSE for details.
6 * Revision 1.18 2000-02-29 13:44:55 adam
7 * Check for config.h (currently not generated).
9 * Revision 1.17 2000/01/31 13:15:21 adam
10 * Removed uses of assert(3). Cleanup of ODR. CCL parser update so
11 * that some characters are not surrounded by spaces in resulting term.
14 * Revision 1.16 1999/11/30 13:47:11 adam
15 * Improved installation. Moved header files to include/yaz.
17 * Revision 1.15 1999/03/31 11:18:25 adam
18 * Implemented odr_strdup. Added Reference ID to backend server API.
20 * Revision 1.14 1998/07/20 12:38:15 adam
21 * More LOG_DEBUG-diagnostics.
23 * Revision 1.13 1998/02/11 11:53:34 adam
24 * Changed code so that it compiles as C++.
26 * Revision 1.12 1995/11/08 17:41:33 quinn
29 * Revision 1.11 1995/11/01 13:54:43 quinn
32 * Revision 1.10 1995/10/25 16:58:19 quinn
33 * Stupid bug in odr_malloc
35 * Revision 1.9 1995/10/13 16:08:08 quinn
38 * Revision 1.8 1995/09/29 17:12:24 quinn
41 * Revision 1.7 1995/09/27 15:02:59 quinn
42 * Modified function heads & prototypes.
44 * Revision 1.6 1995/08/21 09:10:41 quinn
45 * Smallish fixes to suppport new formats.
47 * Revision 1.5 1995/05/16 08:50:55 quinn
48 * License, documentation, and memory fixes
50 * Revision 1.4 1995/05/15 11:56:09 quinn
51 * More work on memory management.
53 * Revision 1.3 1995/04/18 08:15:21 quinn
54 * Added dynamic memory allocation on encoding (whew). Code is now somewhat
55 * neater. We'll make the same change for decoding one day.
57 * Revision 1.2 1995/03/17 10:17:52 quinn
58 * Added memory management.
60 * Revision 1.1 1995/03/14 10:27:40 quinn
61 * Modified makefile to use common lib
62 * Beginning to add memory management to odr
71 #include <yaz/xmalloc.h>
73 /* ------------------------ NIBBLE MEMORY ---------------------- */
76 * Extract the memory control block from o.
78 NMEM odr_extract_mem(ODR o)
86 void *odr_malloc(ODR o, int size)
89 o->mem = nmem_create();
90 return nmem_malloc(o ? o->mem : 0, size);
93 char *odr_strdup(ODR o, const char *str)
95 return nmem_strdup(o->mem, str);
100 return o->mem ? nmem_total(o->mem) : 0;
103 /* ---------- memory management for data encoding ----------*/
106 int odr_grow_block(ODR b, int min_bytes)
116 if (togrow < min_bytes)
118 if (b->size && !(b->buf =
119 (unsigned char *) xrealloc(b->buf, b->size += togrow)))
121 else if (!b->size && !(b->buf = (unsigned char *)
122 xmalloc(b->size = togrow)))
125 fprintf(stderr, "New size for encode_buffer: %d\n", b->size);
130 int odr_write(ODR o, unsigned char *buf, int bytes)
132 if (o->pos + bytes >= o->size && odr_grow_block(o, bytes))
137 memcpy(o->buf + o->pos, buf, bytes);
144 int odr_seek(ODR o, int whence, int offset)
146 if (whence == ODR_S_CUR)
148 else if (whence == ODR_S_END)
150 if (offset > o->size && odr_grow_block(o, offset - o->size))