mirror of
https://github.com/rn10950/RetroZilla.git
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122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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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 of the GNU General Public License Version 2 or later (the "GPL"),
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* or 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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#ifndef nsManifestLineReader_h__
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#define nsManifestLineReader_h__
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#include "nspr.h"
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#include "nsDebug.h"
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class nsManifestLineReader
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{
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public:
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nsManifestLineReader() : mBase(nsnull) {}
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~nsManifestLineReader() {}
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void Init(char* base, PRUint32 flen)
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{
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mBase = mCur = mNext = base;
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mLength = 0;
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mLimit = base + flen;
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}
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PRBool NextLine()
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{
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if(mNext >= mLimit)
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return PR_FALSE;
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mCur = mNext;
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mLength = 0;
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while(mNext < mLimit)
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{
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if(IsEOL(*mNext))
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{
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*mNext = '\0';
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for(++mNext; mNext < mLimit; ++mNext)
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if(!IsEOL(*mNext))
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break;
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return PR_TRUE;
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}
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++mNext;
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++mLength;
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}
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return PR_FALSE;
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}
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int ParseLine(char** chunks, int* lengths, int maxChunks)
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{
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NS_ASSERTION(mCur && maxChunks && chunks, "bad call to ParseLine");
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int found = 0;
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chunks[found++] = mCur;
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if(found < maxChunks)
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{
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char *lastchunk = mCur;
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int *lastlength = lengths;
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for(char* cur = mCur; *cur; cur++)
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{
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if(*cur == ',')
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{
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*cur = 0;
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// always fill in the previous chunk's length
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*lastlength++ = cur - lastchunk;
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chunks[found++] = lastchunk = cur+1;
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if(found == maxChunks)
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break;
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}
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}
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// crazy pointer math - calculate the length of the final chunk
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*lastlength = (mCur + mLength) - lastchunk;
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}
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return found;
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}
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char* LinePtr() {return mCur;}
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PRUint32 LineLength() {return mLength;}
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PRBool IsEOL(char c) {return c == '\n' || c == '\r';}
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private:
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char* mCur;
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PRUint32 mLength;
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char* mNext;
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char* mBase;
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char* mLimit;
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};
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#endif
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