int main(int argc, char *argv[])
{
//Error if there are not at least two commandline arguments
if(argc < 2)
output_usage_and_exit(argv[0]);
//Open specified file, quit if cannot open
std::ifstream in(argv[1]);
if(!in){
std::cerr << "Couldn't open " << argv[1] << std::endl;
exit (2);
}
//convert the infix expressions to postfix
string infix;
Stack<string> postfix;
while(in>>infix){
//substrings out the infix expression minus the line return and
//semi-colon.
string temp = infix.substr(0,infix.length()-2);
//splits the infix expression on spaces for easier processing. Stores in
//it in vector.
std::vector<string> vec = temp.split(' ');
//function for converting infix expressions to postfix format.
string result = infix2postfix(vec);
//places the resulting string from the the conversion on the stack.
postfix.push(result);
}
//done using the input file
in.close();
//handles if an output file was specified on commandline
if(argc==3){
std::ofstream out(argv[2]);
if(!out){
std::cerr << "Couldn't open " << argv[2] <<std::endl;
}
while(!postfix.IsEmpty()){
out<< postfix.pop() << std::endl;}
}else{
while(!postfix.IsEmpty()){
std::cout << postfix.pop() << std::endl;}
}
//successful
return 0;
}
int main(int argc, char *argv[]) {
// Options
std::vector<String> opt(3);
opt[0] = "all";
opt[1] = "bytes";
opt[2] = "host";
// Error if there are not 3 things on the command line
if (argc != 3)
{ output_usage_and_exit(argv[0], opt); }
// Open file, quit if open fails
std::ifstream in(argv[2]);
if (!in)
{ std::cerr << "Couldn't open " << argv[2] << "\n"; exit(2); }
// Process the log file
std::vector<LogEntry> log_entries = parse(in);
// Close the in file
in.close();
// Handle the specified option
String option(argv[1]);
if (option == opt[0]) {
// Output everything
output_all(std::cout, log_entries);
}
else if (option == opt[1]) {
// Output total number of bytes
std::cout << "Total number of bytes sent: "
<< byte_count(log_entries) << std::endl;
}
else if (option == opt[2]) {
// Host names will be out-putted here
by_host(std::cout, log_entries);
}
else {
std::cerr << "Unrecognized option: " << option << std::endl;
std::cerr << "Recognized options: "
<< opt[0] << " "
<< opt[1] << " "
<< opt[2] << std::endl;
}
return 0;
}
int main(int argc, char *argv[])
{
//Error if less than 2 commandline arguments. Means user did not
//specify input file.
if(argc < 2)
output_usage_and_exit(argv[0]);
std::ifstream in(argv[1]);
if(!in){
std::cerr << "Couldn't open: " << argv[1] << std::endl;
exit(2);
}
string temp, infix;
if(argc==3){
std::ofstream out(argv[2]);
if(!out){
std::cerr << "Couldn't open: " << argv[2] << std::endl;
exit(2);
}
while(in>>temp){
out << "Infix: " << temp << std::endl;
infix = temp.substr(0, temp.length()-2);
std::vector<string> vec = infix.split(' ');
string postfix = infix2postfix(vec);
out << "postfix: " << postfix << std::endl;
std::vector<string> vec2 = postfix.split(' ');
out << "Assembler:" << std::endl;
Stack<string> assembler = postfix2assembler(vec2);
outputassembler(out, assembler);
}
}else{
