gecko/dom/plugins/base/nsPluginManifestLineReader.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* 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 ***** */
#ifndef nsPluginManifestLineReader_h_
#define nsPluginManifestLineReader_h_
#include "nspr.h"
#include "nsDebug.h"
#ifdef XP_WIN
#define PLUGIN_REGISTRY_FIELD_DELIMITER '|'
#else
#define PLUGIN_REGISTRY_FIELD_DELIMITER ':'
#endif
#define PLUGIN_REGISTRY_END_OF_LINE_MARKER '$'
class nsPluginManifestLineReader
{
public:
nsPluginManifestLineReader() {mBase = mCur = mNext = mLimit = 0;}
~nsPluginManifestLineReader() { if (mBase) delete[] mBase; mBase=0;}
char* Init(PRUint32 flen)
{
mBase = mCur = mNext = new char[flen + 1];
if (mBase) {
mLimit = mBase + flen;
*mLimit = 0;
}
mLength = 0;
return mBase;
}
PRBool NextLine()
{
if (mNext >= mLimit)
return PR_FALSE;
mCur = mNext;
mLength = 0;
char *lastDelimiter = 0;
while(mNext < mLimit) {
if (IsEOL(*mNext)) {
if (lastDelimiter) {
if (lastDelimiter && *(mNext - 1) != PLUGIN_REGISTRY_END_OF_LINE_MARKER)
return PR_FALSE;
*lastDelimiter = '\0';
} else {
*mNext = '\0';
}
for (++mNext; mNext < mLimit; ++mNext) {
if (!IsEOL(*mNext))
break;
}
return PR_TRUE;
}
if (*mNext == PLUGIN_REGISTRY_FIELD_DELIMITER)
lastDelimiter = mNext;
++mNext;
++mLength;
}
return PR_FALSE;
}
int ParseLine(char** chunks, int maxChunks)
{
NS_ASSERTION(mCur && maxChunks && chunks, "bad call to ParseLine");
int found = 0;
chunks[found++] = mCur;
if (found < maxChunks) {
for (char* cur = mCur; *cur; cur++) {
if (*cur == PLUGIN_REGISTRY_FIELD_DELIMITER) {
*cur = 0;
chunks[found++] = cur + 1;
if (found == maxChunks)
break;
}
}
}
return found;
}
char* LinePtr() { return mCur; }
PRUint32 LineLength() { return mLength; }
PRBool IsEOL(char c) {return c == '\n' || c == '\r';}
char* mBase;
private:
char* mCur;
PRUint32 mLength;
char* mNext;
char* mLimit;
};
#endif