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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)
{
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, '\0', 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] = '\0';
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;
}
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