Adding regex support via boost xpressive

Makefile

@@ -6,11 +6,11 @@ prefix=/usr/local
 begin : main.o begin.o args.o
 	$(CC) -o begin $(CCFLAGS) main.o begin.o args.o
 	
-main.o: main.cxx begin.o
+main.o: main.cxx begin.o 
 	$(CC) $(CFLAGS) main.cxx
 	
 begin.o: begin.cxx begin.hpp
-	$(CC) $(CFLAGS) begin.cxx 
+	$(CC) $(CFLAGS) begin.cxx
 	
 args.o: args.cxx args.hpp
 	$(CC) $(CFLAGS) args.cxx 

README

@@ -2,6 +2,13 @@ This is a free implementation of the Cisco ios/asa/catalyst output modifier "beg
 
 http://www.cisco.com/en/US/docs/ios/preface/usingios.html#wp1012384
 
+DEPENDENCIES
+This program depends on boost/xpressive header only library. On RedHat(-ish) systems do:
+
+yum install boost-devel
+
+before installation
+
 INSTALLATION
 git clone git://github.com/mickenordin/begin.git
 cd begin

begin.cxx

@@ -22,16 +22,18 @@
 
 #include <iostream>
 #include <string>
+#include <boost/xpressive/xpressive.hpp>
 
 using namespace std;
 
 void begin(string needle)
 {
 	string input;
-	
+	boost::xpressive::sregex regex = boost::xpressive::sregex::compile( needle, boost::xpressive::regex_constants::icase );
+
 	while(cin) {
 		getline(cin, input);
-		if (input.find(needle) != string::npos) {
+		if ( boost::xpressive::regex_search(input, regex) ) {
 			cout << input << endl;
 			while(cin) {
 				getline(cin,input);
@@ -42,10 +44,4 @@ void begin(string needle)
 
 }
 
-string tolower(string str) {
-	for( unsigned int i = 0; i < str.length(); i++) {
-		str[i] = tolower(str[i]);
-	}
-	return str;
-} 
 

begin.hpp

@@ -23,9 +23,9 @@
 #include <iostream>
 #include <string>
 
+
 using namespace std;
 
 void begin(string needle);
-string tolower(string str);
 
 #endif

main.cxx

@@ -29,8 +29,6 @@ int main(int argc, char **argv)
 {
 	args myargs(argc, argv);
 	
-	myargs.print();
-	
 	if( argc == 2) {
 		begin(argv[1]);
 	}