setcase
/
src
/
main.cc
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121#include "parg.hh"
using Parg = OB::Parg;
#include "setcase.hh"
using Setcase = OB::Setcase;
#include <string>
#include <iostream>
#include <vector>
#include <map>
#include <unistd.h>
int program_options(Parg& pg);
int program_options(Parg& pg)
{
pg.name("setcase").version("0.1.2 (27.02.2018)");
pg.description("transform text to uppercase and lowercase");
pg.usage("[flags] [options] [--] [arguments]");
pg.usage("[-u|-l] [--] [input text]");
pg.usage("[-v|--version]");
pg.usage("[-h|--help]");
pg.info("Examples", {
"setcase -u uppercase string",
"setcase -l 'LOWERCASE string'",
"setcase -l LOWERCASE | xargs printf \"%s\"",
"printf \"uppercase\" | setcase -u",
"setcase --help",
"setcase --version",
});
pg.info("Exit Codes", {"0 -> normal", "1 -> error"});
pg.author("Brett Robinson (octobanana) <octobanana.dev@gmail.com>");
// flags
pg.set("help,h", "print the help output");
pg.set("version,v", "print the program version");
pg.set("upper,u", "transforms the text to uppercase");
pg.set("lower,l", "transforms the text to lowercase");
pg.set_pos();
pg.set_stdin();
int status {pg.parse()};
if (status > 0 && pg.get_stdin().empty())
{
std::cout << pg.print_help() << "\n";
std::cout << "Error: " << "expected arguments" << "\n";
return -1;
}
if (status < 0)
{
std::cout << pg.print_help() << "\n";
std::cout << "Error: " << pg.error() << "\n";
return -1;
}
if (pg.get<bool>("help"))
{
std::cout << pg.print_help();
return 1;
}
if (pg.get<bool>("version"))
{
std::cout << pg.print_version();
return 1;
}
if (pg.get<bool>("lower") && pg.get<bool>("upper"))
{
std::cout << pg.print_help() << "\n";
std::cout << "Error: " << "flags '-l' and '-u' are in conflict" << "\n";
return -1;
}
if (pg.get_pos().empty() && pg.get_stdin().empty())
{
std::cout << pg.print_help() << "\n";
std::cout << "Error: " << "no input text given" << "\n";
return -1;
}
return 0;
}
int main(int argc, char *argv[])
{
Parg pg {argc, argv};
int pstatus {program_options(pg)};
if (pstatus > 0) return 0;
if (pstatus < 0) return 1;
Setcase sc {pg.get_stdin() + pg.get_pos()};
bool lower {pg.get<bool>("lower")};
bool upper {pg.get<bool>("upper")};
std::string out;
if (lower || upper)
{
if (lower)
{
out = sc.get(Setcase::Lower);
}
else
{
out = sc.get(Setcase::Upper);
}
}
else
{
out = sc.get(Setcase::Lower);
}
if (! isatty(STDOUT_FILENO))
{
std::cout << out;
}
else
{
std::cout << out << "\n";
}
return 0;
}