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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 614 | serge | 1 | /**************************************************************************** |
| 2 | * |
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| 3 | * Open Watcom Project |
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| 4 | * |
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| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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| 6 | * |
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| 7 | * ======================================================================== |
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| 8 | * |
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| 9 | * This file contains Original Code and/or Modifications of Original |
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| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
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| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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| 14 | * provided with the Original Code and Modifications, and is also |
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| 15 | * available at www.sybase.com/developer/opensource. |
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| 16 | * |
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| 17 | * The Original Code and all software distributed under the License are |
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| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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| 23 | * governing rights and limitations under the License. |
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| 24 | * |
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| 25 | * ======================================================================== |
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| 26 | * |
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| 27 | * Description: Implementation of getenv(). |
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| 28 | * |
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| 29 | ****************************************************************************/ |
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| 30 | |||
| 31 | |||
| 32 | #include "variety.h" |
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| 33 | #include "widechar.h" |
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| 34 | #include |
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| 35 | #include |
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| 36 | #include |
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| 37 | #include "rtdata.h" |
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| 38 | #ifdef __WIDECHAR__ |
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| 39 | #include "wenviron.h" |
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| 40 | #endif |
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| 41 | |||
| 42 | #if defined(__UNIX__) |
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| 43 | #ifdef __WIDECHAR__ |
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| 44 | #define CMP_FUNC wcsncmp |
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| 45 | #else |
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| 46 | #define CMP_FUNC strncmp |
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| 47 | #endif |
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| 48 | #else |
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| 49 | #define CMP_FUNC _wcsnicmp |
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| 50 | #endif |
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| 51 | |||
| 52 | #if !defined(__UNIX__) && !defined(__WIDECHAR__) && !defined(__NETWARE__) |
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| 53 | |||
| 54 | _WCRTLINK char *getenv( const char *name ) |
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| 55 | { |
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| 56 | char **envp; |
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| 57 | char *p; |
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| 58 | |||
| 59 | /*** Find the environment string ***/ |
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| 60 | __ptr_check( name, 0 ); |
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| 61 | envp = _RWD_environ; |
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| 62 | if( (envp != NULL) && (name != NULL) ) { |
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| 63 | for( ; p = *envp; ++envp ) { |
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| 64 | const char *s = name; |
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| 65 | |||
| 66 | while( *p != '\0' ) { /* simple check is sufficient for p, not s */ |
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| 67 | if ( _mbterm( s ) ) { |
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| 68 | if( *p == '=' ) return( p + 1 ); |
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| 69 | break; |
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| 70 | } |
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| 71 | if ( _mbctoupper( _mbsnextc( p ) ) != _mbctoupper( _mbsnextc( s ) ) ) |
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| 72 | break; |
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| 73 | p = _mbsinc( p ); /* skip over character */ |
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| 74 | s = _mbsinc( s ); /* skip over character */ |
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| 75 | } |
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| 76 | } |
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| 77 | } |
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| 78 | return( NULL ); /* not found */ |
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| 79 | } |
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| 80 | |||
| 81 | #else |
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| 82 | |||
| 83 | _WCRTLINK CHAR_TYPE *__F_NAME(getenv,_wgetenv)( const CHAR_TYPE *name ) |
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| 84 | { |
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| 85 | #ifdef __NETWARE__ |
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| 86 | name = name; |
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| 87 | #else |
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| 88 | CHAR_TYPE **envp; |
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| 89 | CHAR_TYPE *p; |
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| 90 | int len; |
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| 91 | |||
| 92 | #ifdef __WIDECHAR__ |
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| 93 | if( _RWD_wenviron == NULL ) __create_wide_environment(); |
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| 94 | #endif |
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| 95 | |||
| 96 | /*** Find the environment string ***/ |
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| 97 | __ptr_check( name, 0 ); |
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| 98 | envp = __F_NAME(_RWD_environ,_RWD_wenviron); |
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| 99 | if( (envp != NULL) && (name != NULL) ) { |
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| 100 | len = __F_NAME(strlen,wcslen)( name ); |
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| 101 | for( ; p = *envp; ++envp ) { |
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| 102 | if( CMP_FUNC( p, name, len ) == 0 ) { |
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| 103 | if( p[len] == __F_NAME('=',L'=') ) return( &p[len+1] ); |
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| 104 | } |
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| 105 | } |
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| 106 | } |
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| 107 | #endif |
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| 108 | return( NULL ); /* not found */ |
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| 109 | } |
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| 110 | |||
| 111 | #endif |