| 1 | /* $Id: kHlpBareEnv.c 3599 2007-10-04 19:09:39Z bird $ */
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| 2 | /** @file
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| 3 | * kHlpBare - Environment Manipulation.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (c) 2006-2007 knut st. osmundsen <bird-src-spam@anduin.net>
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| 8 | *
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| 9 | * This file is part of kStuff.
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| 10 | *
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| 11 | * kStuff is free software; you can redistribute it and/or
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| 12 | * modify it under the terms of the GNU Lesser General Public
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| 13 | * License as published by the Free Software Foundation; either
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| 14 | * version 2.1 of the License, or (at your option) any later version.
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| 15 | *
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| 16 | * kStuff is distributed in the hope that it will be useful,
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| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 19 | * Lesser General Public License for more details.
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| 20 | *
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| 21 | * You should have received a copy of the GNU Lesser General Public
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| 22 | * License along with kStuff; if not, write to the Free Software
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| 23 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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| 24 | *
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| 25 | */
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| 26 |
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| 27 | /*******************************************************************************
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| 28 | * Header Files *
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| 29 | *******************************************************************************/
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| 30 | #include <k/kHlpEnv.h>
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| 31 | #include <k/kHlpString.h>
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| 32 | #include <k/kErrors.h>
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| 33 |
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| 34 | #if K_OS == K_OS_DARWIN
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| 35 |
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| 36 | #elif K_OS == K_OS_LINUX
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| 37 |
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| 38 | #elif K_OS == K_OS_OS2
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| 39 | # define INCL_BASE
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| 40 | # define INCL_ERRORS
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| 41 | # include <os2.h>
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| 42 |
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| 43 | #elif K_OS == K_OS_WINDOWS
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| 44 | # include <Windows.h>
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| 45 |
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| 46 | #else
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| 47 | # error "port me"
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| 48 | #endif
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| 49 |
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| 50 |
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| 51 | KHLP_DECL(int) kHlpGetEnv(const char *pszVar, char *pszVal, KSIZE cchVal)
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| 52 | {
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| 53 | #if K_OS == K_OS_DARWIN
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| 54 | /** @todo need to figure out where the stuff is or how it's inherited on darwin ... */
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| 55 | return KERR_ENVVAR_NOT_FOUND;
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| 56 |
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| 57 | #elif K_OS == K_OS_LINUX
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| 58 | /** @todo either read /proc/self/environ or figure out where in the memory the initial environment is... */
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| 59 | return KERR_ENVVAR_NOT_FOUND;
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| 60 |
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| 61 | #elif K_OS == K_OS_OS2
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| 62 | PSZ pszValue = NULL;
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| 63 | int rc;
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| 64 |
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| 65 | *pszVal = '\0';
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| 66 | rc = DosScanEnv((PCSZ)pszVar, &pszValue);
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| 67 | if (!rc)
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| 68 | {
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| 69 | KSIZE cch = kHlpStrLen((const char *)pszValue);
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| 70 | if (cchVal > cch)
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| 71 | kHlpMemCopy(pszVal, pszValue, cch + 1);
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| 72 | else
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| 73 | rc = KERR_BUFFER_OVERFLOW;
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| 74 | }
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| 75 | else
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| 76 | rc = KERR_ENVVAR_NOT_FOUND;
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| 77 | return rc;
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| 78 |
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| 79 | #elif K_OS == K_OS_WINDOWS
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| 80 | DWORD cch;
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| 81 |
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| 82 | SetLastError(0);
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| 83 | cch = GetEnvironmentVariable(pszVar, pszVal, cchVal);
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| 84 | if (cch > 0 && cch < cchVal)
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| 85 | return 0;
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| 86 |
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| 87 | *pszVal = '\0';
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| 88 | if (cch >= cchVal)
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| 89 | return KERR_BUFFER_OVERFLOW;
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| 90 | if (GetLastError() == ERROR_ENVVAR_NOT_FOUND)
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| 91 | return KERR_ENVVAR_NOT_FOUND;
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| 92 | return GetLastError();
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| 93 |
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| 94 | #else
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| 95 | # error "Port me"
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| 96 | #endif
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| 97 | }
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| 98 |
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