156 lines
4.2 KiB
C
156 lines
4.2 KiB
C
/* $LP: LPlib/source/LPdir_win.c,v 1.10 2004/08/26 13:36:05 _cvs_levitte Exp $ */
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/*
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* Copyright (c) 2004, Richard Levitte <richard@levitte.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <windows.h>
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#include <tchar.h>
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#ifndef LPDIR_H
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#include "LPdir.h"
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#endif
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/* We're most likely overcautious here, but let's reserve for
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broken WinCE headers and explicitly opt for UNICODE call.
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Keep in mind that our WinCE builds are compiled with -DUNICODE
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[as well as -D_UNICODE]. */
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#if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
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# define FindFirstFile FindFirstFileW
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#endif
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#if defined(LP_SYS_WINCE) && !defined(FindFirstFile)
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# define FindNextFile FindNextFileW
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#endif
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#ifndef NAME_MAX
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#define NAME_MAX 255
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#endif
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struct LP_dir_context_st
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{
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WIN32_FIND_DATA ctx;
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HANDLE handle;
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char entry_name[NAME_MAX+1];
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};
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const char *LP_find_file(LP_DIR_CTX **ctx, const char *directory)
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{
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struct dirent *direntry = NULL;
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if (ctx == NULL || directory == NULL)
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{
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errno = EINVAL;
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return 0;
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}
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errno = 0;
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if (*ctx == NULL)
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{
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*ctx = (LP_DIR_CTX *)malloc(sizeof(LP_DIR_CTX));
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if (*ctx == NULL)
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{
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errno = ENOMEM;
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return 0;
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}
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memset(*ctx, '\0', sizeof(LP_DIR_CTX));
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if (sizeof(TCHAR) != sizeof(char))
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{
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TCHAR *wdir = NULL;
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/* len_0 denotes string length *with* trailing 0 */
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size_t index = 0,len_0 = strlen(directory) + 1;
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wdir = (TCHAR *)malloc(len_0 * sizeof(TCHAR));
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if (wdir == NULL)
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{
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free(*ctx);
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*ctx = NULL;
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errno = ENOMEM;
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return 0;
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}
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#ifdef LP_MULTIBYTE_AVAILABLE
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if (!MultiByteToWideChar(CP_ACP, 0, directory, len_0, (WCHAR *)wdir, len_0))
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#endif
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for (index = 0; index < len_0; index++)
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wdir[index] = (TCHAR)directory[index];
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(*ctx)->handle = FindFirstFile(wdir, &(*ctx)->ctx);
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free(wdir);
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}
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else
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(*ctx)->handle = FindFirstFile((TCHAR *)directory, &(*ctx)->ctx);
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if ((*ctx)->handle == INVALID_HANDLE_VALUE)
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{
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free(*ctx);
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*ctx = NULL;
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errno = EINVAL;
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return 0;
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}
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}
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else
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{
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if (FindNextFile((*ctx)->handle, &(*ctx)->ctx) == FALSE)
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{
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return 0;
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}
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}
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if (sizeof(TCHAR) != sizeof(char))
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{
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TCHAR *wdir = (*ctx)->ctx.cFileName;
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size_t index, len_0 = 0;
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while (wdir[len_0] && len_0 < (sizeof((*ctx)->entry_name) - 1)) len_0++;
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len_0++;
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#ifdef LP_MULTIBYTE_AVAILABLE
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if (!WideCharToMultiByte(CP_ACP, 0, (WCHAR *)wdir, len_0, (*ctx)->entry_name,
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sizeof((*ctx)->entry_name), NULL, 0))
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#endif
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for (index = 0; index < len_0; index++)
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(*ctx)->entry_name[index] = (char)wdir[index];
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}
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else
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strncpy((*ctx)->entry_name, (const char *)(*ctx)->ctx.cFileName,
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sizeof((*ctx)->entry_name)-1);
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(*ctx)->entry_name[sizeof((*ctx)->entry_name)-1] = '\0';
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return (*ctx)->entry_name;
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}
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int LP_find_file_end(LP_DIR_CTX **ctx)
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{
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if (ctx != NULL && *ctx != NULL)
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{
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FindClose((*ctx)->handle);
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free(*ctx);
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*ctx = NULL;
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return 1;
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}
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errno = EINVAL;
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return 0;
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}
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