2 * Copyright (c) 1995-2000, Index Data
3 * See the file LICENSE for details.
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.19 2000-10-06 12:46:27 adam
8 * Including sys/types.h and netinet/in.h instead on arpa/inet.h on Unix.
10 * Revision 1.18 2000/02/29 13:44:55 adam
11 * Check for config.h (currently not generated).
13 * Revision 1.17 2000/02/28 11:20:06 adam
14 * Using autoconf. New definitions: YAZ_BEGIN_CDECL/YAZ_END_CDECL.
16 * Revision 1.16 2000/01/31 13:15:21 adam
17 * Removed uses of assert(3). Cleanup of ODR. CCL parser update so
18 * that some characters are not surrounded by spaces in resulting term.
21 * Revision 1.15 1999/11/30 13:47:11 adam
22 * Improved installation. Moved header files to include/yaz.
24 * Revision 1.14 1999/05/26 07:49:35 adam
27 * Revision 1.13 1999/01/08 11:23:22 adam
28 * Added const modifier to some of the BER/ODR encoding routines.
30 * Revision 1.12 1996/07/06 19:58:33 quinn
31 * System headerfiles gathered in yconfig
33 * Revision 1.11 1995/09/29 17:12:16 quinn
36 * Revision 1.10 1995/09/29 17:01:50 quinn
39 * Revision 1.9 1995/09/28 10:12:39 quinn
40 * Windows-support changes
42 * Revision 1.8 1995/09/27 15:02:55 quinn
43 * Modified function heads & prototypes.
45 * Revision 1.7 1995/05/16 08:50:44 quinn
46 * License, documentation, and memory fixes
48 * Revision 1.6 1995/04/18 08:15:14 quinn
49 * Added dynamic memory allocation on encoding (whew). Code is now somewhat
50 * neater. We'll make the same change for decoding one day.
52 * Revision 1.5 1995/03/27 15:01:44 quinn
53 * Added include of sys/types to further portability
55 * Revision 1.4 1995/03/08 12:12:07 quinn
56 * Added better error checking.
58 * Revision 1.3 1995/02/09 15:51:46 quinn
61 * Revision 1.2 1995/02/07 17:52:58 quinn
62 * A damn mess, but now things work, I think.
64 * Revision 1.1 1995/02/02 16:21:52 quinn
77 #include <sys/types.h>
78 #include <netinet/in.h>
83 static int ber_encinteger(ODR o, int val);
84 static int ber_decinteger(const unsigned char *buf, int *val);
86 int ber_integer(ODR o, int *val)
93 if ((res = ber_decinteger(o->bp, val)) <= 0)
101 if ((res = ber_encinteger(o, *val)) < 0)
104 case ODR_PRINT: return 1;
105 default: o->error = OOTHER; return 0;
110 * Returns: number of bytes written or -1 for error (out of bounds).
112 int ber_encinteger(ODR o, int val)
116 union { int i; unsigned char c[sizeof(int)]; } tmp;
118 lenpos = odr_tell(o);
119 if (odr_putc(o, 0) < 0) /* dummy */
121 tmp.i = htonl(val); /* ensure that that we're big-endian */
122 for (a = 0; a < (int) sizeof(int) - 1; a++) /* skip superfluous octets */
123 if (!((tmp.c[a] == 0 && !(tmp.c[a+1] & 0X80)) ||
124 (tmp.c[a] == 0XFF && (tmp.c[a+1] & 0X80))))
126 len = sizeof(int) - a;
127 if (odr_write(o, (unsigned char*) tmp.c + a, len) < 0)
129 odr_seek(o, ODR_S_SET, lenpos);
130 if (ber_enclen(o, len, 1, 1) != 1)
132 odr_seek(o, ODR_S_END, 0);
134 fprintf(stderr, "[val=%d]", val);
140 * Returns: Number of bytes read or 0 if no match, -1 if error.
142 int ber_decinteger(const unsigned char *buf, int *val)
144 const unsigned char *b = buf;
146 int res, len, remains;
147 union { int i; unsigned char c[sizeof(int)]; } tmp;
149 if ((res = ber_declen(b, &len)) < 0)
151 if (len > (int) sizeof(int)) /* let's be reasonable, here */
155 remains = sizeof(int) - len;
156 memcpy(tmp.c + remains, b, len);
161 memset(tmp.c, fill, remains);
166 fprintf(stderr, "[val=%d]", *val);