bsnes/nall/arguments.hpp

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#pragma once
#include <nall/location.hpp>
#include <nall/path.hpp>
#include <nall/string.hpp>
#include <nall/vector.hpp>
namespace nall {
struct Arguments {
Arguments(int argc, char** argv);
Arguments(vector<string> arguments);
explicit operator bool() const { return (bool)arguments; }
auto size() const -> uint { return arguments.size(); }
auto operator[](uint index) -> string& { return arguments[index]; }
auto operator[](uint index) const -> const string& { return arguments[index]; }
auto programPath() const -> string;
auto programName() const -> string;
auto programLocation() const -> string;
auto find(string_view name) const -> bool;
auto find(string_view name, bool& argument) const -> bool;
auto find(string_view name, string& argument) const -> bool;
auto begin() const { return arguments.begin(); }
auto end() const { return arguments.end(); }
auto rbegin() const { return arguments.rbegin(); }
auto rend() const { return arguments.rend(); }
auto take() -> string;
auto take(string_view name) -> bool;
auto take(string_view name, bool& argument) -> bool;
auto take(string_view name, string& argument) -> bool;
auto begin() { return arguments.begin(); }
auto end() { return arguments.end(); }
auto rbegin() { return arguments.rbegin(); }
auto rend() { return arguments.rend(); }
private:
auto construct() -> void;
string programArgument;
vector<string> arguments;
};
inline auto Arguments::construct() -> void {
if(!arguments) return;
//extract and pre-process program argument
programArgument = arguments.takeFirst();
programArgument = {Path::real(programArgument), Location::file(programArgument)};
//normalize path and file arguments
for(auto& argument : arguments) {
if(directory::exists(argument)) argument.transform("\\", "/").trimRight("/").append("/");
else if(file::exists(argument)) argument.transform("\\", "/").trimRight("/");
}
}
inline Arguments::Arguments(int argc, char** argv) {
#if defined(PLATFORM_WINDOWS)
utf8_arguments(argc, argv);
#endif
for(uint index : range(argc)) arguments.append(argv[index]);
construct();
}
inline Arguments::Arguments(vector<string> arguments) {
this->arguments = arguments;
construct();
}
inline auto Arguments::programPath() const -> string {
return Location::path(programArgument);
}
inline auto Arguments::programName() const -> string {
return Location::file(programArgument);
}
inline auto Arguments::programLocation() const -> string {
return programArgument;
}
inline auto Arguments::find(string_view name) const -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name)) {
return true;
}
}
return false;
}
inline auto Arguments::find(string_view name, bool& argument) const -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name) && arguments.size() >= index
&& (arguments[index + 1] == "true" || arguments[index + 1] == "false")) {
argument = arguments[index + 1] == "true";
return true;
}
}
return false;
}
inline auto Arguments::find(string_view name, string& argument) const -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name) && arguments.size() >= index) {
argument = arguments[index + 1];
return true;
}
}
return false;
}
//
inline auto Arguments::take() -> string {
if(!arguments) return {};
return arguments.takeFirst();
}
inline auto Arguments::take(string_view name) -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name)) {
arguments.remove(index);
return true;
}
}
return false;
}
inline auto Arguments::take(string_view name, bool& argument) -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name) && arguments.size() > index + 1
&& (arguments[index + 1] == "true" || arguments[index + 1] == "false")) {
arguments.remove(index);
argument = arguments.take(index) == "true";
return true;
}
}
return false;
}
inline auto Arguments::take(string_view name, string& argument) -> bool {
for(uint index : range(arguments.size())) {
if(arguments[index].match(name) && arguments.size() > index + 1) {
arguments.remove(index);
argument = arguments.take(index);
return true;
}
}
return false;
}
}