2 * Copyright (c) 2000, 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 RCSID("$Id: environment.c 20866 2007-06-03 21:00:29Z lha $");
45 /* find assignment in env list; len is length of variable including
50 find_var(char **env, char *assignment, size_t len)
53 for(i = 0; env != NULL && env[i] != NULL; i++)
54 if(strncmp(env[i], assignment, len) == 0)
60 * return count of environment assignments from open file F in
61 * assigned and list of malloced strings in env, return 0 or errno
66 rk_read_env_file(FILE *F, char ***env, int *assigned)
71 char buf[BUFSIZ], *p, *r;
77 for(idx = 0; *env != NULL && (*env)[idx] != NULL; idx++);
80 /* This is somewhat more relaxed on what it accepts then
81 * Wietses sysv_environ from K4 was...
83 while (fgets(buf, BUFSIZ, F) != NULL) {
84 buf[strcspn(buf, "#\n")] = '\0';
86 for(p = buf; isspace((unsigned char)*p); p++);
90 /* Here one should check that it's a 'valid' env string... */
95 if((i = find_var(l, p, r - p + 1)) >= 0) {
96 char *val = strdup(p);
107 tmp = realloc(l, (idx+2) * sizeof (char *));
129 * return count of environment assignments from file and
130 * list of malloced strings in `env'
133 int ROKEN_LIB_FUNCTION
134 read_environment(const char *file, char ***env)
139 if ((F = fopen(file, "r")) == NULL)
142 rk_read_env_file(F, env, &assigned);
147 void ROKEN_LIB_FUNCTION
148 free_environment(char **env)
153 for (i = 0; env[i]; i++)