1 /* Copyright (C) 2002 by Red Hat, Incorporated. All rights reserved.
2 *
3 * Permission to use, copy, modify, and distribute this software
4 * is freely granted, provided that this notice is preserved.
5 */
6
7 #define _DEFAULT_SOURCE
8 #include <errno.h>
9 #include <sys/types.h>
10 #include <string.h>
11 #include <stdlib.h>
12 #include <argz.h>
13 #include <envz.h>
14
15 error_t
envz_merge(char ** envz,size_t * envz_len,const char * envz2,size_t envz2_len,int override)16 envz_merge (char **envz,
17 size_t *envz_len,
18 const char *envz2,
19 size_t envz2_len,
20 int override)
21 {
22 char *entry = NULL;
23 char *name_str = NULL;
24 char *val_str = NULL;
25 char *name_iter = NULL;
26 int retval = 0;
27
28 while((entry = argz_next((char *)envz2, envz2_len, entry)) && !retval)
29 {
30 if (!override)
31 {
32 name_str = strdup (entry);
33 if (!name_str)
34 return ENOMEM;
35 name_iter = strchr(name_str, '=');
36 if(name_iter)
37 *name_iter = '\0';
38
39 if(!envz_entry(*envz, *envz_len, name_str))
40 {
41 retval = argz_add(envz, envz_len, entry);
42 }
43 free(name_str);
44 }
45 else
46 {
47 name_str = strdup (entry);
48 if (!name_str)
49 return ENOMEM;
50 name_iter = strchr(name_str, '=');
51 if(name_iter)
52 {
53 *name_iter = '\0';
54 val_str = name_iter + 1;
55 }
56 else
57 {
58 val_str = NULL;
59 }
60
61 retval = envz_add(envz, envz_len, name_str, val_str);
62 free(name_str);
63 }
64 }
65 return retval;
66 }
67
