зеркало из https://github.com/mozilla/gecko-dev.git
141 строка
4.0 KiB
C++
141 строка
4.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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 TransforMiiX XSLT processor 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) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Peter Van der Beken <peterv@propagandism.org>
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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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#ifndef __nsWhitespaceTokenizer_h
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#define __nsWhitespaceTokenizer_h
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#include "nsDependentSubstring.h"
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class nsWhitespaceTokenizer
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{
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public:
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nsWhitespaceTokenizer(const nsSubstring& aSource)
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{
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aSource.BeginReading(mIter);
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aSource.EndReading(mEnd);
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while (mIter != mEnd && isWhitespace(*mIter)) {
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++mIter;
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}
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}
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/**
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* Checks if any more tokens are available.
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*/
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PRBool hasMoreTokens()
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{
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return mIter != mEnd;
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}
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/**
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* Returns the next token.
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*/
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const nsDependentSubstring nextToken()
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{
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nsSubstring::const_char_iterator begin = mIter;
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while (mIter != mEnd && !isWhitespace(*mIter)) {
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++mIter;
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}
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nsSubstring::const_char_iterator end = mIter;
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while (mIter != mEnd && isWhitespace(*mIter)) {
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++mIter;
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}
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return Substring(begin, end);
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}
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private:
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nsSubstring::const_char_iterator mIter, mEnd;
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PRBool isWhitespace(PRUnichar aChar)
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{
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return aChar <= ' ' &&
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(aChar == ' ' || aChar == '\n' ||
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aChar == '\r'|| aChar == '\t');
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}
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};
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class nsCWhitespaceTokenizer
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{
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public:
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nsCWhitespaceTokenizer(const nsCSubstring& aSource)
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{
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aSource.BeginReading(mIter);
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aSource.EndReading(mEnd);
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while (mIter != mEnd && isWhitespace(*mIter)) {
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++mIter;
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}
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}
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/**
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* Checks if any more tokens are available.
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*/
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PRBool hasMoreTokens()
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{
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return mIter != mEnd;
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}
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/**
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* Returns the next token.
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*/
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const nsDependentCSubstring nextToken()
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{
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nsCSubstring::const_char_iterator begin = mIter;
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while (mIter != mEnd && !isWhitespace(*mIter)) {
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++mIter;
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}
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nsCSubstring::const_char_iterator end = mIter;
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while (mIter != mEnd && isWhitespace(*mIter)) {
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++mIter;
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}
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return Substring(begin, end);
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}
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private:
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nsCSubstring::const_char_iterator mIter, mEnd;
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PRBool isWhitespace(char aChar)
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{
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return aChar <= ' ' &&
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(aChar == ' ' || aChar == '\n' ||
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aChar == '\r'|| aChar == '\t');
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}
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};
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#endif /* __nsWhitespaceTokenizer_h */
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