253 lines
7.3 KiB
C++
253 lines
7.3 KiB
C++
/*
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* (C) Copyright The MITRE Corporation 1999 All rights reserved.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with 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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* The program provided "as is" without any warranty express or
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* implied, including the warranty of non-infringement and the implied
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* warranties of merchantibility and fitness for a particular purpose.
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* The Copyright owner will not be liable for any damages suffered by
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* you as a result of using the Program. In no event will the Copyright
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* owner be liable for any special, indirect or consequential damages or
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* lost profits even if the Copyright owner has been advised of the
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* possibility of their occurrence.
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*
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* Please see release.txt distributed with this file for more information.
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*
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*/
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/**
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* An XML utility class
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* @author <a href="mailto:kvisco@mitre.org">Keith Visco</a>
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**/
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#include "XMLUtils.h"
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//------------------------------/
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//- Implementation of XMLUtils -/
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//------------------------------/
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const String XMLUtils::XMLNS = "xmlns";
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void XMLUtils::getNameSpace(const String& src, String& dest) {
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//-- anything preceding ':' is the namespace part of the name
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int idx = src.indexOf(':');
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if ( idx > 0 ) {
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//-- create new String to prevent any chars in dest from being
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//-- lost
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String tmp;
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src.subString(0,idx, tmp);
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dest.append(tmp);
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}
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else dest.append("");
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} //-- getNameSpace
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void XMLUtils::getLocalPart(const String& src, String& dest) {
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//-- anything after ':' is the local part of the name
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int idx = src.indexOf(':');
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if ( idx < -1 ) idx = -1;
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//-- create new String to prevent any chars in dest from being
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//-- lost
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String tmp;
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src.subString(idx+1, tmp);
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dest.append(tmp);
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} //-- getLocalPart
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/**
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* Returns true if the given character represents an Alpha letter
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**/
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MBool XMLUtils::isAlphaChar(Int32 ch) {
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if ((ch >= 'a' ) && (ch <= 'z' )) return MB_TRUE;
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if ((ch >= 'A' ) && (ch <= 'Z' )) return MB_TRUE;
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return MB_FALSE;
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} //-- isAlphaChar
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/**
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* Returns true if the given character represents a numeric letter (digit)
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**/
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MBool XMLUtils::isDigit(Int32 ch) {
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if ((ch >= '0') && (ch <= '9')) return MB_TRUE;
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return MB_FALSE;
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} //-- isDigit
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/**
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* Returns true if the given character is an allowable QName character
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**/
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MBool XMLUtils::isNCNameChar(Int32 ch) {
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if (isDigit(ch) || isAlphaChar(ch)) return MB_TRUE;
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return (MBool) ((ch == '.') ||(ch == '_') || (ch == '-'));
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} //-- isNCNameChar
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/**
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* Returns true if the given character is an allowable NCName character
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**/
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MBool XMLUtils::isQNameChar(Int32 ch) {
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return (MBool) (( ch == ':') || isNCNameChar(ch));
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} //-- isQNameChar
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/**
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* Returns true if the given String is a valid XML QName
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**/
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MBool XMLUtils::isValidQName(String& name) {
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int size = name.length();
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if ( size == 0 ) return MB_FALSE;
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else if ( !isAlphaChar(name.charAt(0))) return MB_FALSE;
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else {
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for ( int i = 1; i < size; i++) {
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if ( ! isQNameChar(name.charAt(i))) return MB_FALSE;
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}
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}
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return MB_TRUE;
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} //-- isValidQName
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/**
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* Normalizes the value of an XML attribute
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**/
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void XMLUtils::normalizeAttributeValue(String& attValue) {
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Int32 size = attValue.length();
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//-- make copy of chars
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char* chars = new char[size+1];
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attValue.toChar(chars);
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//-- clear attValue
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attValue.clear();
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Int32 cc = 0;
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MBool addSpace = MB_FALSE;
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while ( cc < size) {
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char ch = chars[cc++];
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switch (ch) {
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case ' ':
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if ( attValue.length() > 0) addSpace = MB_TRUE;
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break;
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case '\r':
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break;
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case '\n':
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attValue.append("
");
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break;
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default:
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if ( addSpace) {
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attValue.append(' ');
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addSpace = MB_FALSE;
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}
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attValue.append(ch);
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break;
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}
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}
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delete chars;
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} //-- normalizeAttributeValue
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/**
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* Normalizes the value of a XML processing instruction
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**/
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void XMLUtils::normalizePIValue(String& piValue) {
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Int32 size = piValue.length();
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//-- make copy of chars
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char* chars = new char[size+1];
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piValue.toChar(chars);
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//-- clear attValue
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piValue.clear();
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Int32 cc = 0;
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char prevCh = '\0';
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while ( cc < size) {
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char ch = chars[cc++];
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switch (ch) {
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case '>':
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if ( prevCh == '?' ) {
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piValue.append(' ');
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}
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piValue.append(ch);
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break;
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default:
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piValue.append(ch);
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break;
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}
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prevCh = ch;
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}
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delete chars;
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} //-- noramlizePIValue
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/**
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* Strips whitespace from the given String.
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* Newlines (#xD), tabs (#x9), and consecutive spaces (#x20) are
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* converted to a single space (#x20).
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* @param data the String to strip whitespace from
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* @param dest the destination String to append the result to
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**/
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void XMLUtils::stripSpace (const String& data, String& dest) {
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stripSpace(data,dest,MB_FALSE,MB_FALSE);
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} //-- stripSpace
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/**
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* Strips whitespace from the given String.
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* Newlines (#xD), tabs (#x9), and consecutive spaces (#x20) are
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* converted to a single space (#x20).
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* @param data the String to strip whitespace from
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* @param dest the destination String to append the result to
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* @param stripAllLeadSpace, a boolean indicating whether or not to
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* strip all leading space. If true all whitespace from the start of the
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* given String will be stripped. If false, all whitespace from the start
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* of the given String will be converted to a single space.
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* @param stripAllTrailSpace, a boolean indicating whether or not to
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* strip all trailing space. If true all whitespace at the end of the
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* given String will be stripped. If false, all whitespace at the end
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* of the given String will be converted to a single space.
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**/
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void XMLUtils::stripSpace
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( const String& data,
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String& dest,
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MBool stripAllLeadSpace,
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MBool stripAllTrailSpace )
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{
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char lastToken, token;
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Int32 oldSize = data.length();
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char* chars = new char[oldSize+1];
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data.toChar(chars);
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lastToken = '\0';
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Int32 total = 0;
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// indicates we have seen at least one
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// non whitespace charater
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MBool validChar = MB_FALSE;
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for (int i = 0; i < oldSize; i++) {
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token = chars[i];
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switch(token) {
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case ' ':
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case '\t':
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case '\n':
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case '\r':
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token = ' ';
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if (stripAllLeadSpace && (!validChar)) break;
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if (lastToken != token) chars[total++] = token;
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break;
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default:
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chars[total++] = token;
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validChar = MB_TRUE;
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break;
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}
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lastToken = token;
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}
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//-- remove last trailing space if necessary
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if (stripAllTrailSpace)
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if ((total > 0) && (chars[total-1] == ' ')) --total;
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if (validChar) {
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chars[total] = '\0'; //-- add Null terminator
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dest.append(chars);
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}
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delete chars;
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} //-- stripSpace
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