gecko/build/wince/shunt/a2w.cpp

154 lines
4.6 KiB
C++
Executable File

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code, released
* Jan 28, 2003.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 2003
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Garrett Arch Blythe, 28-January-2003
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "mozce_internal.h"
int a2w_buffer(const char* inACPString, int inACPChars, unsigned short* outWideString, int inWideChars)
{
int retval = 0;
/*
** Start off by terminating the out argument if appropriate.
*/
if(NULL != outWideString && 0 != inWideChars)
{
*outWideString = L'\0';
}
/*
** Sanity check arguments.
*/
if(NULL != inACPString && 0 != inACPChars && (0 == inWideChars || NULL != outWideString))
{
/*
** Attempt the conversion.
*/
retval = MultiByteToWideChar(
CP_ACP,
0,
inACPString,
inACPChars,
outWideString,
inWideChars
);
}
return retval;
}
unsigned short* a2w_malloc(const char* inACPString, int inACPChars, int* outWideChars)
{
LPWSTR retval = NULL;
/*
** Initialize any out arguments.
*/
if(NULL != outWideChars)
{
*outWideChars = 0;
}
/*
** Initialize the acp char length if requested.
** We do this here to avoid doing it twice in calls to a2w_buffer.
*/
if(-1 == inACPChars)
{
if(NULL != inACPString)
{
/*
** Plus one so the terminating character is included.
*/
inACPChars = (int)strlen(inACPString) + 1;
}
else
{
inACPChars = 0;
}
}
/*
** Sanity check arguments.
*/
if(NULL != inACPString && 0 != inACPChars)
{
int charsRequired = 0;
/*
** Determine the size of buffer required for the conversion.
*/
charsRequired = a2w_buffer(inACPString, inACPChars, NULL, 0);
if(0 != charsRequired)
{
LPWSTR heapBuffer = NULL;
heapBuffer = (LPWSTR)malloc((size_t)charsRequired * sizeof(WCHAR));
if(NULL != heapBuffer)
{
int wideChars = 0;
/*
** Real thing this time.
*/
wideChars = a2w_buffer(inACPString, inACPChars, heapBuffer, charsRequired);
if(0 != wideChars)
{
retval = heapBuffer;
if(NULL != outWideChars)
{
*outWideChars = wideChars;
}
}
else
{
/*
** Something wrong.
** Clean up.
*/
free(heapBuffer);
}
}
}
}
return retval;
}