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