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Checking in initial version of Keith Visco's (kvisco@ziplink.net) XSL processor, Transformiix. Some glue code to interface it with mozilla is #ifdef MOZILLA protected.

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git-svn-id: svn://10.0.0.236/trunk@44991 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
nisheeth%netscape.com
1999-08-28 08:19:56 +00:00
parent 5b86aa3a5c
commit b791d4288f
183 changed files with 37007 additions and 0 deletions
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236
mozilla/extensions/transformiix/source/xsl/expr/StringFunctionCall.cpp Normal file
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/*
* (C) Copyright The MITRE Corporation 1999 All rights reserved.
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (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/
*
* The program provided "as is" without any warranty express or
* implied, including the warranty of non-infringement and the implied
* warranties of merchantibility and fitness for a particular purpose.
* The Copyright owner will not be liable for any damages suffered by
* you as a result of using the Program. In no event will the Copyright
* owner be liable for any special, indirect or consequential damages or
* lost profits even if the Copyright owner has been advised of the
* possibility of their occurrence.
*
* Please see release.txt distributed with this file for more information.
*
*/
/**
* StringFunctionCall
* A representation of the XPath String funtions
* @author <a href="mailto:kvisco@mitre.org">Keith Visco</a>
**/
#include "FunctionLib.h"
/**
* Creates a default StringFunctionCall. The string() function
* is the default
**/
StringFunctionCall::StringFunctionCall() : FunctionCall(STRING_FN) {
type = STRING;
} //-- StringFunctionCall
/**
* Creates a StringFunctionCall of the given type
**/
StringFunctionCall::StringFunctionCall(short type) : FunctionCall() {
this->type = type;
switch ( type ) {
case CONCAT:
FunctionCall::setName(CONCAT_FN);
break;
case CONTAINS:
FunctionCall::setName(CONTAINS_FN);
break;
case STARTS_WITH:
FunctionCall::setName(STARTS_WITH_FN);
break;
case STRING_LENGTH:
FunctionCall::setName(STRING_LENGTH_FN);
break;
case SUBSTRING:
FunctionCall::setName(SUBSTRING_FN);
break;
case SUBSTRING_AFTER:
FunctionCall::setName(SUBSTRING_AFTER_FN);
break;
case SUBSTRING_BEFORE:
FunctionCall::setName(SUBSTRING_BEFORE_FN);
break;
case TRANSLATE:
FunctionCall::setName(TRANSLATE_FN);
break;
default:
FunctionCall::setName(STRING_FN);
break;
}
} //-- StringFunctionCall
/**
* Evaluates this Expr based on the given context node and processor state
* @param context the context node for evaluation of this Expr
* @param ps the ContextState containing the stack information needed
* for evaluation
* @return the result of the evaluation
**/
ExprResult* StringFunctionCall::evaluate(Node* context, ContextState* cs) {
ListIterator* iter = params.iterator();
Int32 argc = params.getLength();
String err;
ExprResult* result = 0;
switch ( type ) {
case CONCAT :
if ( requireParams(2, cs) ) {
String resultStr;
while(iter->hasNext()) {
evaluateToString((Expr*)iter->next(),context, cs, resultStr);
}
result = new StringResult(resultStr);
}
else result = new StringResult("");
break;
case CONTAINS :
if ( requireParams(2, 2, cs) ) {
String arg1, arg2;
evaluateToString((Expr*)iter->next(),context, cs, arg1);
evaluateToString((Expr*)iter->next(),context, cs, arg2);
result = new BooleanResult((MBool)(arg1.indexOf(arg2) >= 0));
}
else result = new BooleanResult(MB_FALSE);
break;
case STARTS_WITH :
if ( requireParams(2, 2, cs) ) {
String arg1, arg2;
evaluateToString((Expr*)iter->next(),context, cs, arg1);
evaluateToString((Expr*)iter->next(),context, cs, arg2);
result = new BooleanResult((MBool)(arg1.indexOf(arg2) == 0));
}
else result = new BooleanResult(MB_FALSE);
break;
case STRING_LENGTH:
if ( requireParams(0, 1, cs) ) {
String resultStr;
if ( argc == 1) {
evaluateToString((Expr*)iter->next(),context, cs, resultStr);
}
else XMLDOMUtils::getNodeValue(context, &resultStr);
result = new NumberResult( (double) resultStr.length());
}
else result = new NumberResult(0.0);
break;
case SUBSTRING:
if ( requireParams(2, 3, cs) ) {
String src;
evaluateToString((Expr*)iter->next(),context, cs, src);
double dbl = evaluateToNumber((Expr*)iter->next(), context, cs);
//-- check for NaN
if ( Double::isNaN(dbl)) {
result = new StringResult("");
break;
}
Int32 startIdx = (Int32)ceil(dbl);
Int32 endIdx = src.length();
if ( argc == 3) {
dbl += evaluateToNumber((Expr*)iter->next(),context, cs);
if (dbl == Double::POSITIVE_INFINITY) endIdx++;
else if ( dbl == Double::NEGATIVE_INFINITY ) endIdx = 0;
else endIdx = (Int32)floor(dbl);
}
String resultStr;
//-- strings are indexed starting at 1 for XSL
//-- adjust to a 0-based index
if (startIdx > 0) startIdx--;
else if (startIdx == 0 ) endIdx--;
else startIdx=0;
src.subString(startIdx,endIdx,resultStr);
result = new StringResult(resultStr);
}
else result = new StringResult("");
break;
case SUBSTRING_AFTER:
if ( requireParams(2, 2, cs) ) {
String arg1, arg2;
evaluateToString((Expr*)iter->next(),context, cs, arg1);
evaluateToString((Expr*)iter->next(),context, cs, arg2);
Int32 idx = arg1.indexOf(arg2);
if ((idx >= 0)&&(idx<arg1.length())) {
Int32 len = arg2.length();
arg2.clear();
arg1.subString(idx+len,arg2);
result = new StringResult(arg2);
break;
}
}
result = new StringResult("");
break;
case SUBSTRING_BEFORE:
if ( requireParams(2, 2, cs) ) {
String arg1, arg2;
evaluateToString((Expr*)iter->next(),context, cs, arg1);
evaluateToString((Expr*)iter->next(),context, cs, arg2);
Int32 idx = arg1.indexOf(arg2);
if ((idx >= 0)&&(idx<arg1.length())) {
arg2.clear();
arg1.subString(0,idx,arg2);
result = new StringResult(arg2);
break;
}
}
result = new StringResult("");
break;
case TRANSLATE:
if ( requireParams(3, 3, cs) ) {
String src, oldChars, newChars;
evaluateToString((Expr*)iter->next(),context, cs, src);
evaluateToString((Expr*)iter->next(),context, cs, oldChars);
evaluateToString((Expr*)iter->next(),context, cs, newChars);
Int32 size = src.length();
char* chars = new char[size+1];
src.toChar(chars);
src.clear();
Int32 newIdx = 0;
for (Int32 i = 0; i < size; i++) {
Int32 idx = oldChars.indexOf(chars[i]);
if (idx >= 0) {
UNICODE_CHAR nchar = newChars.charAt(idx);
if (nchar != -1) src.append(nchar);
}
else src.append(chars[i]);
}
return new StringResult(src);
}
result = new StringResult("");
break;
default : //-- string( object? )
if ( requireParams(0, 1, cs) ) {
String resultStr;
if (iter->hasNext()) {
evaluateToString((Expr*)iter->next(),context, cs, resultStr);
}
else {
String temp;
XMLDOMUtils::getNodeValue(context, &temp);
if ( cs->isStripSpaceAllowed(context) ) {
XMLUtils::stripSpace(temp, resultStr);
}
else resultStr.append(temp);
}
result = new StringResult(resultStr);
}
else result = new StringResult("");
break;
}
delete iter;
return result;
} //-- evaluate