Source/LibTIFF/tif_wince.c

/* $Id: tif_wince.c,v 1.9 2009/07/14 21:10:27 drolon Exp $ */

/*
 * Copyright (c) 1988-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and 
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 * 
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
 * 
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
 * OF THIS SOFTWARE.
 */

/*
 * Windows CE-specific routines for TIFF Library.
 * Adapted from tif_win32.c 01/10/2006 by Mateusz Loskot (mateusz@loskot.net)
 */

#ifndef _WIN32_WCE
# error "Only Windows CE target is supported!"
#endif

#include "tiffiop.h"
#include <windows.h>

/* Turn off console support on Windows CE. */
#undef TIF_PLATFORM_CONSOLE


/*
 * Open a TIFF file for read/writing.
 */
TIFF*
TIFFOpen(const char* name, const char* mode)
{
	static const char module[] = "TIFFOpen";
	thandle_t fd;
	int m;
	DWORD dwMode;
	TIFF* tif;
    size_t nLen;
    size_t nWideLen;
    wchar_t* wchName;

	m = _TIFFgetMode(mode, module);

	switch(m)
	{
	case O_RDONLY:
		dwMode = OPEN_EXISTING;
		break;
	case O_RDWR:
		dwMode = OPEN_ALWAYS;
		break;
	case O_RDWR|O_CREAT:
		dwMode = OPEN_ALWAYS;
		break;
	case O_RDWR|O_TRUNC:
		dwMode = CREATE_ALWAYS;
		break;
	case O_RDWR|O_CREAT|O_TRUNC:
		dwMode = CREATE_ALWAYS;
		break;
	default:
		return ((TIFF*)0);
	}

    /* On Windows CE, CreateFile is mapped to CreateFileW,
     * but file path is passed as char-based string,
     * so the path has to be converted to wchar_t.
     */

    nWideLen = 0;
    wchName = NULL;
    nLen = strlen(name) + 1;
    
    nWideLen = MultiByteToWideChar(CP_ACP, 0, name, nLen, NULL, 0);
    wchName = (wchar_t*)malloc(sizeof(wchar_t) * nWideLen);
    if (NULL == wchName)
    {
        TIFFErrorExt(0, module, "Memory allocation error!");
		return ((TIFF *)0);
    }
    memset(wchName, 0, sizeof(wchar_t) * nWideLen);
    MultiByteToWideChar(CP_ACP, 0, name, nLen, wchName, nWideLen);

	fd = (thandle_t)CreateFile(wchName,
		(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ | GENERIC_WRITE),
		FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, dwMode,
		(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
		NULL);

    free(wchName);

    if (fd == INVALID_HANDLE_VALUE) {
		TIFFErrorExt(0, module, "%s: Cannot open", name);
		return ((TIFF *)0);
	}

    /* TODO - mloskot: change to TIFFdOpenW and pass wchar path */

	tif = TIFFFdOpen((int)fd, name, mode);
	if(!tif)
		CloseHandle(fd);
	return tif;
}

/*
 * Open a TIFF file with a Unicode filename, for read/writing.
 */
TIFF*
TIFFOpenW(const wchar_t* name, const char* mode)
{
	static const char module[] = "TIFFOpenW";
	thandle_t fd;
	int m;
	DWORD dwMode;
	int mbsize;
	char *mbname;
	TIFF *tif;

	m = _TIFFgetMode(mode, module);

	switch(m) {
		case O_RDONLY:			dwMode = OPEN_EXISTING; break;
		case O_RDWR:			dwMode = OPEN_ALWAYS;   break;
		case O_RDWR|O_CREAT:		dwMode = OPEN_ALWAYS;   break;
		case O_RDWR|O_TRUNC:		dwMode = CREATE_ALWAYS; break;
		case O_RDWR|O_CREAT|O_TRUNC:	dwMode = CREATE_ALWAYS; break;
		default:			return ((TIFF*)0);
	}

    /* On Windows CE, CreateFile is mapped to CreateFileW,
     * so no conversion of wchar_t to char is required.
     */

	fd = (thandle_t)CreateFile(name,
		(m == O_RDONLY)?GENERIC_READ:(GENERIC_READ|GENERIC_WRITE),
		FILE_SHARE_READ, NULL, dwMode,
		(m == O_RDONLY)?FILE_ATTRIBUTE_READONLY:FILE_ATTRIBUTE_NORMAL,
		NULL);
	if (fd == INVALID_HANDLE_VALUE) {
		TIFFErrorExt(0, module, "%S: Cannot open", name);
		return ((TIFF *)0);
	}

	mbname = NULL;
	mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);
	if (mbsize > 0) {
		mbname = (char *)_TIFFmalloc(mbsize);
		if (!mbname) {
			TIFFErrorExt(0, module,
			"Can't allocate space for filename conversion buffer");
			return ((TIFF*)0);
		}

		WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,
				    NULL, NULL);
	}

	tif = TIFFFdOpen((int)fd,
			 (mbname != NULL) ? mbname : "<unknown>", mode);
	if(!tif)
		CloseHandle(fd);

	_TIFFfree(mbname);

	return tif;
}

static void
Win32WarningHandler(const char* module, const char* fmt, va_list ap)
{
    /* On Windows CE, MessageBox is mapped to wide-char based MessageBoxW. */

    size_t nWideLen = 0;
    LPTSTR szWideTitle = NULL;
    LPTSTR szWideMsg = NULL;

	LPSTR szTitle;
	LPSTR szTmp;
	LPCSTR szTitleText = "%s Warning";
	LPCSTR szDefaultModule = "LIBTIFF";
	LPCSTR szTmpModule;

	szTmpModule = (module == NULL) ? szDefaultModule : module;
	if ((szTitle = (LPSTR)LocalAlloc(LMEM_FIXED,
        (strlen(szTmpModule) + strlen(szTitleText)
        + strlen(fmt) + 128) * sizeof(char))) == NULL)
		return;

	sprintf(szTitle, szTitleText, szTmpModule);
	szTmp = szTitle + (strlen(szTitle) + 2) * sizeof(char);
	vsprintf(szTmp, fmt, ap);

    /* Convert error message to Unicode. */

    nWideLen = MultiByteToWideChar(CP_ACP, 0, szTitle, -1, NULL, 0);
    szWideTitle = (wchar_t*)malloc(sizeof(wchar_t) * nWideLen);
    MultiByteToWideChar(CP_ACP, 0, szTitle, -1, szWideTitle, nWideLen);

    nWideLen = MultiByteToWideChar(CP_ACP, 0, szTmp, -1, NULL, 0);
    szWideMsg = (wchar_t*)malloc(sizeof(wchar_t) * nWideLen);
    MultiByteToWideChar(CP_ACP, 0, szTmp, -1, szWideMsg, nWideLen);

    /* Display message */
	
    MessageBox(GetFocus(), szWideMsg, szWideTitle, MB_OK | MB_ICONEXCLAMATION);
    
    /* Free resources */

    LocalFree(szTitle);
    free(szWideMsg);
    free(szWideTitle);
}

TIFFErrorHandler _TIFFwarningHandler = Win32WarningHandler;

static void
Win32ErrorHandler(const char* module, const char* fmt, va_list ap)
{
    /* On Windows CE, MessageBox is mapped to wide-char based MessageBoxW. */

    size_t nWideLen = 0;
    LPTSTR szWideTitle = NULL;
    LPTSTR szWideMsg = NULL;

    LPSTR szTitle;
	LPSTR szTmp;
	LPCSTR szTitleText = "%s Error";
	LPCSTR szDefaultModule = "LIBTIFF";
	LPCSTR szTmpModule;

	szTmpModule = (module == NULL) ? szDefaultModule : module;
	if ((szTitle = (LPSTR)LocalAlloc(LMEM_FIXED,
        (strlen(szTmpModule) + strlen(szTitleText)
        + strlen(fmt) + 128) * sizeof(char))) == NULL)
		return;

	sprintf(szTitle, szTitleText, szTmpModule);
	szTmp = szTitle + (strlen(szTitle) + 2) * sizeof(char);
	vsprintf(szTmp, fmt, ap);

    /* Convert error message to Unicode. */

    nWideLen = MultiByteToWideChar(CP_ACP, 0, szTitle, -1, NULL, 0);
    szWideTitle = (wchar_t*)malloc(sizeof(wchar_t) * nWideLen);
    MultiByteToWideChar(CP_ACP, 0, szTitle, -1, szWideTitle, nWideLen);

    nWideLen = MultiByteToWideChar(CP_ACP, 0, szTmp, -1, NULL, 0);
    szWideMsg = (wchar_t*)malloc(sizeof(wchar_t) * nWideLen);
    MultiByteToWideChar(CP_ACP, 0, szTmp, -1, szWideMsg, nWideLen);

    /* Display message */

	MessageBox(GetFocus(), szWideMsg, szWideTitle, MB_OK | MB_ICONEXCLAMATION);

    /* Free resources */

    LocalFree(szTitle);
    free(szWideMsg);
    free(szWideTitle);
}

TIFFErrorHandler _TIFFerrorHandler = Win32ErrorHandler;


/* vim: set ts=8 sts=8 sw=8 noet: */