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/*
* Copyright (C) 2007-2023 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#include "bu/regex.h"
#include <regex.h> // Please, please include the system regex.h file
#define re ((regex_t *)pRegEx)
#define aSubStr ((regmatch_t *)paSubStr)
Bu::RegEx::RegEx() :
pRegEx( NULL ),
bCompiled( false ),
paSubStr( NULL )
{
}
Bu::RegEx::RegEx( const Bu::String &sSrc ) :
pRegEx( NULL ),
bCompiled( false ),
paSubStr( NULL )
{
compile( sSrc );
}
Bu::RegEx::~RegEx()
{
if( bCompiled )
{
regfree( re );
delete re;
delete[] aSubStr;
}
}
void Bu::RegEx::compile( const Bu::String &sSrc )
{
if( bCompiled )
{
regfree( re );
delete re;
delete[] aSubStr;
bCompiled = false;
}
pRegEx = (void *)(new regex_t);
int nErr = regcomp( re, sSrc.getStr(), REG_EXTENDED|REG_NEWLINE );
if( nErr )
{
size_t length = regerror( nErr, re, NULL, 0 );
char *buffer = new char[length];
(void) regerror( nErr, re, buffer, length );
Bu::String s( buffer );
delete[] buffer;
throw "???"; // BuildException( s.getStr() );
}
bCompiled = true;
this->sSrc = sSrc;
nSubStr = re->re_nsub+1;
paSubStr = (void *)(new regmatch_t[nSubStr]);
}
int Bu::RegEx::getNumSubStrings()
{
return nSubStr;
}
bool Bu::RegEx::execute( const Bu::String &sSrc )
{
sTest = sSrc;
if( regexec( re, sSrc.getStr(), nSubStr, aSubStr, 0 ) )
return false;
return true;
}
void Bu::RegEx::getSubStringRange( int nIndex, int &iStart, int &iEnd )
{
iStart = aSubStr[nIndex].rm_so;
iEnd = aSubStr[nIndex].rm_eo;
}
Bu::String Bu::RegEx::getSubString( int nIndex )
{
// regmatch_t *Subs = aSubStr;
return Bu::String(
sTest.getStr()+aSubStr[nIndex].rm_so,
aSubStr[nIndex].rm_eo - aSubStr[nIndex].rm_so
);
}
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