/*
- * Copyright (C) 1994, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
+ * Copyright (c) 1995-2001, Index Data
+ * See the file LICENSE for details.
*
* $Log: odr_mem.c,v $
- * Revision 1.2 1995-03-17 10:17:52 quinn
+ * Revision 1.19 2001-03-25 21:55:12 adam
+ * Added odr_intdup. Ztest server returns TaskPackage for ItemUpdate.
+ *
+ * Revision 1.18 2000/02/29 13:44:55 adam
+ * Check for config.h (currently not generated).
+ *
+ * Revision 1.17 2000/01/31 13:15:21 adam
+ * Removed uses of assert(3). Cleanup of ODR. CCL parser update so
+ * that some characters are not surrounded by spaces in resulting term.
+ * ILL-code updates.
+ *
+ * Revision 1.16 1999/11/30 13:47:11 adam
+ * Improved installation. Moved header files to include/yaz.
+ *
+ * Revision 1.15 1999/03/31 11:18:25 adam
+ * Implemented odr_strdup. Added Reference ID to backend server API.
+ *
+ * Revision 1.14 1998/07/20 12:38:15 adam
+ * More LOG_DEBUG-diagnostics.
+ *
+ * Revision 1.13 1998/02/11 11:53:34 adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.12 1995/11/08 17:41:33 quinn
+ * Smallish.
+ *
+ * Revision 1.11 1995/11/01 13:54:43 quinn
+ * Minor adjustments
+ *
+ * Revision 1.10 1995/10/25 16:58:19 quinn
+ * Stupid bug in odr_malloc
+ *
+ * Revision 1.9 1995/10/13 16:08:08 quinn
+ * Added OID utility
+ *
+ * Revision 1.8 1995/09/29 17:12:24 quinn
+ * Smallish
+ *
+ * Revision 1.7 1995/09/27 15:02:59 quinn
+ * Modified function heads & prototypes.
+ *
+ * Revision 1.6 1995/08/21 09:10:41 quinn
+ * Smallish fixes to suppport new formats.
+ *
+ * Revision 1.5 1995/05/16 08:50:55 quinn
+ * License, documentation, and memory fixes
+ *
+ * Revision 1.4 1995/05/15 11:56:09 quinn
+ * More work on memory management.
+ *
+ * Revision 1.3 1995/04/18 08:15:21 quinn
+ * Added dynamic memory allocation on encoding (whew). Code is now somewhat
+ * neater. We'll make the same change for decoding one day.
+ *
+ * Revision 1.2 1995/03/17 10:17:52 quinn
* Added memory management.
*
* Revision 1.1 1995/03/14 10:27:40 quinn
* Beginning to add memory management to odr
*
*/
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <stdlib.h>
-#include <odr.h>
+#include <yaz/odr.h>
+#include <yaz/xmalloc.h>
-#define ODR_MEM_CHUNK (10*1024)
+/* ------------------------ NIBBLE MEMORY ---------------------- */
-typedef struct odr_memblock
+/*
+ * Extract the memory control block from o.
+ */
+NMEM odr_extract_mem(ODR o)
{
- char *buf;
- int size;
- int top;
- struct odr_memblock *next;
-} odr_memblock;
+ NMEM r = o->mem;
-static odr_memblock *freelist = 0;
+ o->mem = 0;
+ return r;
+}
-static void free_block(odr_memblock *p)
+void *odr_malloc(ODR o, int size)
{
- p->next = freelist;
- freelist = p;
+ if (o && !o->mem)
+ o->mem = nmem_create();
+ return nmem_malloc(o ? o->mem : 0, size);
}
-static odr_memblock *get_block(int size)
+char *odr_strdup(ODR o, const char *str)
{
- odr_memblock *r, *l;
+ return nmem_strdup(o->mem, str);
+}
- for (r = freelist, l = 0; r; l = r, r = r->next)
- if (r->size >= size)
- break;
- if (r)
- if (l)
- l->next = r->next;
- else
- freelist = r->next;
- else
- {
- int get = ODR_MEM_CHUNK;
+int *odr_intdup(ODR o, int v)
+{
+ return nmem_intdup(o->mem, v);
+}
- if (get < size)
- get = size;
- if (!(r = malloc(sizeof(*r))))
- return 0;
- if (!(r->buf = malloc(r->size = get)))
- return 0;
- }
- r->top = 0;
- return r;
+int odr_total(ODR o)
+{
+ return o->mem ? nmem_total(o->mem) : 0;
}
-void odr_release_mem(odr_memblock *p)
+/* ---------- memory management for data encoding ----------*/
+
+
+int odr_grow_block(ODR b, int min_bytes)
{
- odr_memblock *t;
+ int togrow;
- while (p)
+ if (!b->can_grow)
+ return -1;
+ if (!b->size)
+ togrow = 1024;
+ else
+ togrow = b->size;
+ if (togrow < min_bytes)
+ togrow = min_bytes;
+ if (b->size && !(b->buf =
+ (unsigned char *) xrealloc(b->buf, b->size += togrow)))
+ abort();
+ else if (!b->size && !(b->buf = (unsigned char *)
+ xmalloc(b->size = togrow)))
+ abort();
+#ifdef ODR_DEBUG
+ fprintf(stderr, "New size for encode_buffer: %d\n", b->size);
+#endif
+ return 0;
+}
+
+int odr_write(ODR o, unsigned char *buf, int bytes)
+{
+ if (o->pos + bytes >= o->size && odr_grow_block(o, bytes))
{
- t = p;
- p = p->next;
- free_block(t);
+ o->error = OSPACE;
+ return -1;
}
+ memcpy(o->buf + o->pos, buf, bytes);
+ o->pos += bytes;
+ if (o->pos > o->top)
+ o->top = o->pos;
+ return 0;
}
-void *odr_malloc(ODR o, int size)
+int odr_seek(ODR o, int whence, int offset)
{
- struct odr_memblock *p = o->mem;
- char *r;
-
- if (!p || p->size - p->top < size)
- if (!(p = get_block(size)))
- {
- o->error = OMEMORY;
- return 0;
- }
- else
- {
- p->next = o->mem;
- o->mem = p;
- }
- r = p->buf + p->top;
- p->top += (size + (sizeof(long) - 1)) & ~(sizeof(long) - 1);
- return r;
+ if (whence == ODR_S_CUR)
+ offset += o->pos;
+ else if (whence == ODR_S_END)
+ offset += o->top;
+ if (offset > o->size && odr_grow_block(o, offset - o->size))
+ {
+ o->error = OSPACE;
+ return -1;
+ }
+ o->pos = offset;
+ return 0;
}