Some utility functions I've written during my time programming C++ in school.

gistfile1.cpp

#ifndef EvanHahn_cpp_commonstuff
#define EvanHahn_cpp_commonstuff

#include <string>
#include <string.h>
#include <sstream>
#include <vector>
using namespace std;

// are two C strings equal?
bool streq(const char* a, const char* b) {
  return (strcmp(a, b) == 0);
}

// string left trim
string ltrim(const string s) {
	string result;
	uint i;
	for (i = 0; (i < s.size()) && (s[i] == ' '); i ++);
	return s.substr(i);
}

// string right trim
string rtrim(const string s) {
	if (s.empty())
		return "";
	string result;
	uint i;
	for (i = s.size() - 1; (i > 0) && (s[i] == ' '); i --);
	return s.substr(0, i + 1);
}

// string trim
string trim(const string s) {
	return ltrim(rtrim(s));
}

// split("hello to the world!", "! ") returns vector of "hello", "to", "the", "world"
vector<string> split(const string toSplit, const char* separatorString) {

	// declare result vector
	vector<string> result;

	// are we done real fast?
	if (toSplit.empty())
		return result;

	// split it up
	char* splitter;
	string toAdd;
	splitter = strtok((char*) toSplit.c_str(), separatorString);
	while (splitter != NULL) {
		toAdd = (string) splitter;
		result.push_back((string) splitter);
		splitter = strtok(NULL, separatorString);
	}

	// done!
	return result;

}

// convert an int to a string
string intToString(int s) {
	stringstream ss;
	ss << s;
	return ss.str();
}

#endif