From d2fe7edb2bfea20987a1f69935179fa5fc9f3b37 Mon Sep 17 00:00:00 2001
From: Mike Buland <eichlan@xagasoft.com>
Date: Wed, 23 Aug 2006 22:09:30 +0000
Subject: Really close...functions are doing their stuff, we have inputs,
 almost have rules.

---
 src/regexp.cpp | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 src/regexp.cpp

(limited to 'src/regexp.cpp')

diff --git a/src/regexp.cpp b/src/regexp.cpp
new file mode 100644
index 0000000..f79be97
--- /dev/null
+++ b/src/regexp.cpp
@@ -0,0 +1,78 @@
+#include "regexp.h"
+#include "build.h" // For BuildException
+#include "staticstring.h"
+
+RegExp::RegExp() :
+	bCompiled( false ),
+	aSubStr( NULL )
+{
+}
+
+RegExp::RegExp( const char *sSrc ) :
+	bCompiled( false ),
+	aSubStr( NULL )
+{
+	compile( sSrc );
+}
+
+RegExp::~RegExp()
+{
+	if( bCompiled )
+	{
+		regfree( &re );
+		delete[] aSubStr;
+	}
+}
+
+void RegExp::compile( const char *sSrc )
+{
+	if( bCompiled )
+	{
+		regfree( &re );
+		delete[] aSubStr;
+		bCompiled = false;
+	}
+
+	int nErr = regcomp( &re, sSrc, 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 );
+		StaticString s( buffer );
+		delete[] buffer;
+		throw BuildException( s.getString() );
+	}
+	bCompiled = true;
+	this->sSrc = sSrc;
+
+	nSubStr = re.re_nsub+1;
+	aSubStr = new regmatch_t[nSubStr];
+}
+
+int RegExp::getNumSubStrings()
+{
+	return nSubStr;
+}
+
+bool RegExp::execute( const char *sSrc )
+{
+	sTest = sSrc;
+	if( regexec( &re, sSrc, nSubStr, aSubStr, 0 ) )
+		return false;
+	return true;
+}
+
+std::pair<int,int> RegExp::getSubStringRange( int nIndex )
+{
+	return std::pair<int,int>( aSubStr[nIndex].rm_so, aSubStr[nIndex].rm_eo );
+}
+
+std::string RegExp::getSubString( int nIndex )
+{
+	return std::string(
+		sTest.getString()+aSubStr[nIndex].rm_so,
+		aSubStr[nIndex].rm_eo - aSubStr[nIndex].rm_so
+		);
+}
+
-- 
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