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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 of 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 nsManifestLineReader_h__
#define nsManifestLineReader_h__
#include "nspr.h"
#include "nsDebug.h"
class nsManifestLineReader
{
public:
nsManifestLineReader() : mBase(nsnull) {}
~nsManifestLineReader() {}
void Init(char* base, PRUint32 flen)
{
mBase = mCur = mNext = base;
mLength = 0;
mLimit = base + flen;
}
PRBool NextLine()
{
if(mNext >= mLimit)
return PR_FALSE;
mCur = mNext;
mLength = 0;
while(mNext < mLimit)
{
if(IsEOL(*mNext))
{
*mNext = '\0';
for(++mNext; mNext < mLimit; ++mNext)
if(!IsEOL(*mNext))
break;
return PR_TRUE;
}
++mNext;
++mLength;
}
return PR_FALSE;
}
int ParseLine(char** chunks, int* lengths, int maxChunks)
{
NS_ASSERTION(mCur && maxChunks && chunks, "bad call to ParseLine");
int found = 0;
chunks[found++] = mCur;
if(found < maxChunks)
{
char *lastchunk = mCur;
int *lastlength = lengths;
for(char* cur = mCur; *cur; cur++)
{
if(*cur == ',')
{
*cur = 0;
// always fill in the previous chunk's length
*lastlength++ = cur - lastchunk;
chunks[found++] = lastchunk = cur+1;
if(found == maxChunks)
break;
}
}
// crazy pointer math - calculate the length of the final chunk
*lastlength = (mCur + mLength) - lastchunk;
}
return found;
}
char* LinePtr() {return mCur;}
PRUint32 LineLength() {return mLength;}
PRBool IsEOL(char c) {return c == '\n' || c == '\r';}
private:
char* mCur;
PRUint32 mLength;
char* mNext;
char* mBase;
char* mLimit;
};
#endif
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