2 * msvcrt.dll environment functions
4 * Copyright 1996,1998 Marcus Meissner
5 * Copyright 1996 Jukka Iivonen
6 * Copyright 1997,2000 Uwe Bonnes
7 * Copyright 2000 Jon Griffiths
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include "wine/unicode.h"
26 #include "msvcrt/stdlib.h"
29 #include "wine/debug.h"
31 WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
33 /*********************************************************************
36 char *MSVCRT_getenv(const char *name)
39 unsigned int length=strlen(name);
41 for (environ = *__p__environ(); *environ; environ++)
44 char *pos = strchr(str,'=');
45 if (pos && ((pos - str) == length) && !strncasecmp(str,name,length))
47 TRACE("(%s): got %s\n", debugstr_a(name), debugstr_a(pos + 1));
54 /*********************************************************************
57 MSVCRT_wchar_t *_wgetenv(const MSVCRT_wchar_t *name)
59 MSVCRT_wchar_t **environ;
60 unsigned int length=strlenW(name);
62 for (environ = *__p__wenviron(); *environ; environ++)
64 MSVCRT_wchar_t *str = *environ;
65 MSVCRT_wchar_t *pos = strchrW(str,'=');
66 if (pos && ((pos - str) == length) && !strncmpiW(str,name,length))
68 TRACE("(%s): got %s\n", debugstr_w(name), debugstr_w(pos + 1));
75 /*********************************************************************
78 int _putenv(const char *str)
80 char name[256], value[512];
88 while (*str && *str != '=')
98 ret = !SetEnvironmentVariableA(name, value[0] ? value : NULL);
99 /* Update the __p__environ array only when already initialized */
101 MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
102 if (MSVCRT__wenviron)
103 MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
107 /*********************************************************************
108 * _wputenv (MSVCRT.@)
110 int _wputenv(const MSVCRT_wchar_t *str)
112 MSVCRT_wchar_t name[256], value[512];
113 MSVCRT_wchar_t *dst = name;
116 TRACE("%s\n", debugstr_w(str));
120 while (*str && *str != '=')
130 ret = !SetEnvironmentVariableW(name, value[0] ? value : NULL);
131 /* Update the __p__environ array only when already initialized */
133 MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
134 if (MSVCRT__wenviron)
135 MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);