mirror of
https://github.com/rn10950/RetroZilla.git
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386 lines
10 KiB
C++
386 lines
10 KiB
C++
/* vim:set ts=2 sw=2 et cindent: */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is IBM Corporation.
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* Portions created by IBM Corporation are Copyright (C) 2003
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* IBM Corporation. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@meer.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsString.h"
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#include "nsCharTraits.h"
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#include "nsStringAPI.h"
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#include "nsNativeCharsetUtils.h"
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/* ------------------------------------------------------------------------- */
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NS_STRINGAPI(nsresult)
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NS_StringContainerInit(nsStringContainer &aContainer)
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{
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NS_ASSERTION(sizeof(nsStringContainer) >= sizeof(nsString),
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"nsStringContainer is not large enough");
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// use placement new to avoid heap allocating nsString object
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new (&aContainer) nsString();
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return NS_OK;
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}
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NS_STRINGAPI(nsresult)
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NS_StringContainerInit2(nsStringContainer &aContainer,
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const PRUnichar *aData,
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PRUint32 aDataLength,
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PRUint32 aFlags)
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{
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NS_ASSERTION(sizeof(nsStringContainer) >= sizeof(nsString),
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"nsStringContainer is not large enough");
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if (!aData)
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{
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new (&aContainer) nsString();
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}
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else
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{
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if (aDataLength == PR_UINT32_MAX)
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{
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NS_ENSURE_ARG(!(aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING));
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aDataLength = nsCharTraits<PRUnichar>::length(aData);
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}
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if (aFlags & (NS_STRING_CONTAINER_INIT_DEPEND |
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NS_STRING_CONTAINER_INIT_ADOPT))
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{
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PRUint32 flags;
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if (aFlags & NS_STRING_CONTAINER_INIT_SUBSTRING)
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flags = nsSubstring::F_NONE;
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else
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flags = nsSubstring::F_TERMINATED;
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if (aFlags & NS_STRING_CONTAINER_INIT_ADOPT)
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flags |= nsSubstring::F_OWNED;
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new (&aContainer) nsSubstring(NS_CONST_CAST(PRUnichar *, aData),
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aDataLength, flags);
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}
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else
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{
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new (&aContainer) nsString(aData, aDataLength);
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}
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}
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return NS_OK;
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}
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NS_STRINGAPI(void)
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NS_StringContainerFinish(nsStringContainer &aContainer)
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{
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// call the nsString dtor
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NS_REINTERPRET_CAST(nsString *, &aContainer)->~nsString();
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}
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/* ------------------------------------------------------------------------- */
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NS_STRINGAPI(PRUint32)
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NS_StringGetData(const nsAString &aStr, const PRUnichar **aData,
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PRBool *aTerminated)
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{
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if (aTerminated)
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*aTerminated = aStr.IsTerminated();
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nsAString::const_iterator begin;
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aStr.BeginReading(begin);
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*aData = begin.get();
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return begin.size_forward();
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}
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NS_STRINGAPI(PRUint32)
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NS_StringGetMutableData(nsAString &aStr, PRUint32 aDataLength,
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PRUnichar **aData)
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{
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if (aDataLength != PR_UINT32_MAX) {
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aStr.SetLength(aDataLength);
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if (aStr.Length() != aDataLength) {
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*aData = nsnull;
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return 0;
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}
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}
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nsAString::iterator begin;
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aStr.BeginWriting(begin);
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*aData = begin.get();
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return begin.size_forward();
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}
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NS_STRINGAPI(PRUnichar *)
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NS_StringCloneData(const nsAString &aStr)
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{
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return ToNewUnicode(aStr);
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}
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NS_STRINGAPI(nsresult)
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NS_StringSetData(nsAString &aStr, const PRUnichar *aData, PRUint32 aDataLength)
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{
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aStr.Assign(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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NS_STRINGAPI(nsresult)
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NS_StringSetDataRange(nsAString &aStr,
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PRUint32 aCutOffset, PRUint32 aCutLength,
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const PRUnichar *aData, PRUint32 aDataLength)
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{
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if (aCutOffset == PR_UINT32_MAX)
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{
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// append case
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if (aData)
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aStr.Append(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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if (aCutLength == PR_UINT32_MAX)
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aCutLength = aStr.Length() - aCutOffset;
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if (aData)
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{
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if (aDataLength == PR_UINT32_MAX)
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aStr.Replace(aCutOffset, aCutLength, nsDependentString(aData));
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else
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aStr.Replace(aCutOffset, aCutLength, Substring(aData, aData + aDataLength));
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}
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else
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aStr.Cut(aCutOffset, aCutLength);
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return NS_OK; // XXX report errors
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}
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NS_STRINGAPI(nsresult)
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NS_StringCopy(nsAString &aDest, const nsAString &aSrc)
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{
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aDest.Assign(aSrc);
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return NS_OK; // XXX report errors
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}
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/* ------------------------------------------------------------------------- */
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NS_STRINGAPI(nsresult)
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NS_CStringContainerInit(nsCStringContainer &aContainer)
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{
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NS_ASSERTION(sizeof(nsCStringContainer) >= sizeof(nsCString),
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"nsCStringContainer is not large enough");
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// use placement new to avoid heap allocating nsCString object
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new (&aContainer) nsCString();
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return NS_OK;
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}
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NS_STRINGAPI(nsresult)
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NS_CStringContainerInit2(nsCStringContainer &aContainer,
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const char *aData,
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PRUint32 aDataLength,
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PRUint32 aFlags)
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{
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NS_ASSERTION(sizeof(nsCStringContainer) >= sizeof(nsCString),
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"nsStringContainer is not large enough");
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if (!aData)
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{
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new (&aContainer) nsCString();
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}
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else
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{
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if (aDataLength == PR_UINT32_MAX)
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{
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NS_ENSURE_ARG(!(aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING));
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aDataLength = nsCharTraits<char>::length(aData);
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}
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if (aFlags & (NS_CSTRING_CONTAINER_INIT_DEPEND |
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NS_CSTRING_CONTAINER_INIT_ADOPT))
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{
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PRUint32 flags;
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if (aFlags & NS_CSTRING_CONTAINER_INIT_SUBSTRING)
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flags = nsCSubstring::F_NONE;
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else
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flags = nsCSubstring::F_TERMINATED;
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if (aFlags & NS_CSTRING_CONTAINER_INIT_ADOPT)
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flags |= nsCSubstring::F_OWNED;
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new (&aContainer) nsCSubstring(NS_CONST_CAST(char *, aData),
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aDataLength, flags);
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}
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else
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{
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new (&aContainer) nsCString(aData, aDataLength);
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}
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}
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return NS_OK;
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}
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NS_STRINGAPI(void)
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NS_CStringContainerFinish(nsCStringContainer &aContainer)
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{
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// call the nsCString dtor
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NS_REINTERPRET_CAST(nsCString *, &aContainer)->~nsCString();
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}
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/* ------------------------------------------------------------------------- */
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NS_STRINGAPI(PRUint32)
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NS_CStringGetData(const nsACString &aStr, const char **aData,
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PRBool *aTerminated)
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{
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if (aTerminated)
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*aTerminated = aStr.IsTerminated();
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nsACString::const_iterator begin;
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aStr.BeginReading(begin);
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*aData = begin.get();
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return begin.size_forward();
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}
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NS_STRINGAPI(PRUint32)
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NS_CStringGetMutableData(nsACString &aStr, PRUint32 aDataLength, char **aData)
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{
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if (aDataLength != PR_UINT32_MAX) {
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aStr.SetLength(aDataLength);
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if (aStr.Length() != aDataLength) {
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*aData = nsnull;
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return 0;
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}
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}
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nsACString::iterator begin;
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aStr.BeginWriting(begin);
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*aData = begin.get();
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return begin.size_forward();
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}
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NS_STRINGAPI(char *)
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NS_CStringCloneData(const nsACString &aStr)
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{
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return ToNewCString(aStr);
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}
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NS_STRINGAPI(nsresult)
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NS_CStringSetData(nsACString &aStr, const char *aData, PRUint32 aDataLength)
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{
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aStr.Assign(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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NS_STRINGAPI(nsresult)
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NS_CStringSetDataRange(nsACString &aStr,
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PRUint32 aCutOffset, PRUint32 aCutLength,
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const char *aData, PRUint32 aDataLength)
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{
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if (aCutOffset == PR_UINT32_MAX)
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{
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// append case
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if (aData)
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aStr.Append(aData, aDataLength);
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return NS_OK; // XXX report errors
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}
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if (aCutLength == PR_UINT32_MAX)
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aCutLength = aStr.Length() - aCutOffset;
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if (aData)
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{
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if (aDataLength == PR_UINT32_MAX)
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aStr.Replace(aCutOffset, aCutLength, nsDependentCString(aData));
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else
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aStr.Replace(aCutOffset, aCutLength, Substring(aData, aData + aDataLength));
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}
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else
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aStr.Cut(aCutOffset, aCutLength);
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return NS_OK; // XXX report errors
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}
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NS_STRINGAPI(nsresult)
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NS_CStringCopy(nsACString &aDest, const nsACString &aSrc)
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{
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aDest.Assign(aSrc);
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return NS_OK; // XXX report errors
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}
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/* ------------------------------------------------------------------------- */
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NS_STRINGAPI(nsresult)
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NS_CStringToUTF16(const nsACString &aSrc,
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nsCStringEncoding aSrcEncoding,
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nsAString &aDest)
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{
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switch (aSrcEncoding)
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{
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case NS_CSTRING_ENCODING_ASCII:
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CopyASCIItoUTF16(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_UTF8:
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CopyUTF8toUTF16(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
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NS_CopyNativeToUnicode(aSrc, aDest);
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break;
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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return NS_OK; // XXX report errors
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}
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NS_STRINGAPI(nsresult)
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NS_UTF16ToCString(const nsAString &aSrc,
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nsCStringEncoding aDestEncoding,
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nsACString &aDest)
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{
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switch (aDestEncoding)
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{
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case NS_CSTRING_ENCODING_ASCII:
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LossyCopyUTF16toASCII(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_UTF8:
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CopyUTF16toUTF8(aSrc, aDest);
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break;
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case NS_CSTRING_ENCODING_NATIVE_FILESYSTEM:
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NS_CopyUnicodeToNative(aSrc, aDest);
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break;
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default:
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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return NS_OK; // XXX report errors
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}
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