#include <iostream>
#include <fstream>
#include <vector>
#include <unistd.h>

using namespace std;

int main(int ac, char* av[]) {
	ifstream cfg("javacredir.cfg");
	vector<string> addArgs;
	if (cfg) {
		string line;
		cfg >> line;
		if (cfg.bad()) {
			cout << "Could not read javacredir.cfg" << endl;
			return 2;
		}
		addArgs.push_back(line);
		while(cfg) {
			getline(cfg, line);
			int start = 0;
			while((start<line.length()) &&
			      (isspace(line[start]))) {
				++start;
			}
			int end = line.length();
			while((end>start) &&
			      (isspace(line[end-1]))) {
				--end;
			}
			line = line.substr(start,end);
			if (line.length()>0) {
				addArgs.push_back(line);
			}
		}
	}
	else {
		// cout << "Did not find javacredir.cfg, need command line argument." << endl;
		if (ac<2) {
			cout << "Syntax if no javacredir.cfg is present:" << endl;
			cout << "<javac.exe> <javac arguments...>" << endl;
			cout << endl;
			cout << "Syntax if javacredir.cfg is present:" << endl;
			cout << "<javac arguments...>" << endl;
			cout << endl;
			return 1;
		}
	}
	int argssize = ac+addArgs.size();
	char** args = new char*[argssize];
	for(int i=0; i<addArgs.size(); ++i) {
		args[i] = new char[addArgs[i].length()+1];
		strcpy(args[i], addArgs[i].c_str());
	}
	args[argssize-1] = NULL;
	for(int i=1; i<ac; ++i) {
		args[i+addArgs.size()-1] = av[i];
	}

	/*
	for(int i=0; i<argssize-1; ++i) {
		cout << "arg " << i << ": ";
		cout << args[i] << endl;
	}
	*/

	int ret = execvp(args[0], args);

	for(int i=0; i<addArgs.size(); ++i) {
		delete[] args[i];
	}
	delete[] args;

	return ret;
}