euarel
/
src
/
main.cc
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153#include "parg.hh"
using Parg = OB::Parg;
#include "euarel.hh"
namespace Euarel = OB::Euarel;
#include <unistd.h>
#include <string>
#include <iostream>
int program_options(Parg& pg);
void print(std::string const& str);
void run(Parg& pg);
int program_options(Parg& pg)
{
pg.name("euarel").version("0.1.1 (06.12.2018)");
pg.description("A CLI tool for URL percent-encoding and percent-decoding text.");
pg.usage("[flags] [options] [--] [arguments]");
pg.usage("[-e|--encode] [-f|--form] 'text'");
pg.usage("[-d|--decode] [-f|--form] 'text'");
pg.usage("[-v|--version]");
pg.usage("[-h|--help]");
pg.info("Examples", {
"euarel --encode 'text to encode'",
"euarel --decode 'text to decode'",
"euarel -ef 'encode form data'",
"printf 'redirect text to encode' | euarel -e",
"euarel --help",
"euarel --version",
});
pg.info("Exit Codes", {"0 -> normal", "1 -> error"});
pg.info("Repository", {
"https://github.com/octobanana/euarel.git",
});
pg.info("Homepage", {
"https://octobanana.com/software/euarel",
});
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("encode,e", "percent encode text");
pg.set("decode,d", "percent decode text");
pg.set("form,f", "use 'application/x-www-form-urlencoded' media type");
pg.set_pos();
pg.set_stdin();
int status {pg.parse()};
if (status > 0 && pg.get_stdin().empty())
{
std::cerr << pg.help() << "\n";
std::cerr << "Error: " << "expected arguments" << "\n";
return -1;
}
if (status < 0)
{
std::cerr << pg.help() << "\n";
std::cerr << "Error: " << pg.error() << "\n";
return -1;
}
if (pg.get<bool>("help"))
{
std::cerr << pg.help();
return 1;
}
if (pg.get<bool>("version"))
{
std::cerr << pg.name() << " v" << pg.version() << "\n";
return 1;
}
if (! pg.get<bool>("encode") && ! pg.get<bool>("decode"))
{
std::cerr << pg.help() << "\n";
std::cerr << "Error: " << "expected either '-e' or '-d' flag" << "\n";
return -1;
}
if (pg.get<bool>("encode") && pg.get<bool>("decode"))
{
std::cerr << pg.help() << "\n";
std::cerr << "Error: " << "flags '-e' and '-d' are in conflict" << "\n";
return -1;
}
if ((pg.get<bool>("encode") || pg.get<bool>("decode")) &&
(pg.get_stdin().empty() && pg.get_pos().empty()))
{
std::cerr << pg.help() << "\n";
std::cerr << "Error: " << "expected input text" << "\n";
return -1;
}
return 0;
}
void print(std::string const& str)
{
if (! isatty(STDOUT_FILENO))
{
std::cout << str;
}
else
{
std::cout << str << "\n";
}
}
void run(Parg& pg)
{
bool form {pg.get<bool>("form")};
std::string data {pg.get_stdin() + pg.get_pos()};
std::string str;
if (pg.get<bool>("encode"))
{
str = Euarel::url_encode(data, form);
}
else if (pg.get<bool>("decode"))
{
str = Euarel::url_decode(data, form);
}
print(str);
}
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;
run(pg);
return 0;
}