163 lines
4.3 KiB
C
163 lines
4.3 KiB
C
/*
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* msvcrt.dll environment functions
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*
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* Copyright 1996,1998 Marcus Meissner
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* Copyright 1996 Jukka Iivonen
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* Copyright 1997,2000 Uwe Bonnes
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* Copyright 2000 Jon Griffiths
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "wine/unicode.h"
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#include "msvcrt.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(msvcrt);
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/*********************************************************************
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* getenv (MSVCRT.@)
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*/
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char * CDECL MSVCRT_getenv(const char *name)
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{
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char **environ;
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unsigned int length=strlen(name);
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for (environ = *__p__environ(); *environ; environ++)
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{
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char *str = *environ;
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char *pos = strchr(str,'=');
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if (pos && ((pos - str) == length) && !strncasecmp(str,name,length))
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{
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TRACE("(%s): got %s\n", debugstr_a(name), debugstr_a(pos + 1));
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return pos + 1;
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}
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}
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return NULL;
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}
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/*********************************************************************
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* _wgetenv (MSVCRT.@)
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*/
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MSVCRT_wchar_t * CDECL _wgetenv(const MSVCRT_wchar_t *name)
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{
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MSVCRT_wchar_t **environ;
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unsigned int length=strlenW(name);
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for (environ = *__p__wenviron(); *environ; environ++)
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{
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MSVCRT_wchar_t *str = *environ;
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MSVCRT_wchar_t *pos = strchrW(str,'=');
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if (pos && ((pos - str) == length) && !strncmpiW(str,name,length))
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{
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TRACE("(%s): got %s\n", debugstr_w(name), debugstr_w(pos + 1));
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return pos + 1;
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}
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}
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return NULL;
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}
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/*********************************************************************
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* _putenv (MSVCRT.@)
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*/
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int CDECL _putenv(const char *str)
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{
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char *name, *value;
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char *dst;
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int ret;
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TRACE("%s\n", debugstr_a(str));
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if (!str)
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return -1;
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name = HeapAlloc(GetProcessHeap(), 0, strlen(str) + 1);
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if (!name)
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return -1;
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dst = name;
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while (*str && *str != '=')
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*dst++ = *str++;
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if (!*str++)
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{
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ret = -1;
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goto finish;
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}
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*dst++ = '\0';
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value = dst;
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while (*str)
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*dst++ = *str++;
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*dst = '\0';
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ret = SetEnvironmentVariableA(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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/* Update the __p__environ array only when already initialized */
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if (MSVCRT__environ)
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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if (MSVCRT__wenviron)
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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finish:
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HeapFree(GetProcessHeap(), 0, name);
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return ret;
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}
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/*********************************************************************
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* _wputenv (MSVCRT.@)
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*/
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int CDECL _wputenv(const MSVCRT_wchar_t *str)
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{
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MSVCRT_wchar_t *name, *value;
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MSVCRT_wchar_t *dst;
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int ret;
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TRACE("%s\n", debugstr_w(str));
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if (!str)
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return -1;
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name = HeapAlloc(GetProcessHeap(), 0, (strlenW(str) + 1) * sizeof(MSVCRT_wchar_t));
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if (!name)
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return -1;
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dst = name;
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while (*str && *str != '=')
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*dst++ = *str++;
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if (!*str++)
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{
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ret = -1;
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goto finish;
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}
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*dst++ = 0;
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value = dst;
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while (*str)
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*dst++ = *str++;
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*dst = 0;
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ret = SetEnvironmentVariableW(name, value[0] ? value : NULL) ? 0 : -1;
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/* _putenv returns success on deletion of nonexistent variable, unlike [Rtl]SetEnvironmentVariable */
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if ((ret == -1) && (GetLastError() == ERROR_ENVVAR_NOT_FOUND)) ret = 0;
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/* Update the __p__environ array only when already initialized */
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if (MSVCRT__environ)
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MSVCRT__environ = msvcrt_SnapshotOfEnvironmentA(MSVCRT__environ);
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if (MSVCRT__wenviron)
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MSVCRT__wenviron = msvcrt_SnapshotOfEnvironmentW(MSVCRT__wenviron);
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finish:
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HeapFree(GetProcessHeap(), 0, name);
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return ret;
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}
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