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https://github.com/CLIUtils/CLI11.git
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94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
#pragma once
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// Distributed under the LGPL v2.1 license. See accompanying
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// file LICENSE or https://github.com/CLIUtils/CLI11 for details.
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#include <string>
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#include <vector>
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#include <tuple>
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#include "CLI/Error.hpp"
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#include "CLI/StringTools.hpp"
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namespace CLI {
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namespace detail {
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// Returns false if not a short option. Otherwise, sets opt name and rest and returns true
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inline bool split_short(const std::string ¤t, std::string &name, std::string &rest) {
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if(current.size()>1 && current[0] == '-' && valid_first_char(current[1])) {
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name = current.substr(1,1);
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rest = current.substr(2);
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return true;
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} else
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return false;
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}
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// Returns false if not a long option. Otherwise, sets opt name and other side of = and returns true
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inline bool split_long(const std::string ¤t, std::string &name, std::string &value) {
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if(current.size()>2 && current.substr(0,2) == "--" && valid_first_char(current[2])) {
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auto loc = current.find("=");
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if(loc != std::string::npos) {
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name = current.substr(2,loc-2);
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value = current.substr(loc+1);
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} else {
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name = current.substr(2);
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value = "";
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}
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return true;
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} else
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return false;
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}
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// Splits a string into multiple long and short names
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inline std::vector<std::string> split_names(std::string current) {
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std::vector<std::string> output;
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size_t val;
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while((val = current.find(",")) != std::string::npos) {
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output.push_back(current.substr(0,val));
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current = current.substr(val+1);
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}
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output.push_back(current);
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return output;
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}
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/// Get a vector of short names, one of long names, and a single name
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inline std::tuple<std::vector<std::string>,std::vector<std::string>, std::string>
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get_names(const std::vector<std::string> &input) {
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std::vector<std::string> short_names;
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std::vector<std::string> long_names;
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std::string pos_name;
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for(std::string name : input) {
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if(name.length() == 0)
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continue;
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else if(name.length() > 1 && name[0] == '-' && name[1] != '-') {
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if(name.length()==2 && valid_first_char(name[1]))
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short_names.emplace_back(1,name[1]);
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else
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throw BadNameString("Invalid one char name: "+name);
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} else if(name.length() > 2 && name.substr(0,2) == "--") {
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name = name.substr(2);
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if(valid_name_string(name))
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long_names.push_back(name);
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else
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throw BadNameString("Bad long name: "+name);
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} else if(name == "-" || name == "--") {
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throw BadNameString("Must have a name, not just dashes");
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} else {
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if(pos_name.length() > 0)
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throw BadNameString("Only one positional name allowed, remove: "+name);
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pos_name = name;
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}
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}
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return std::tuple<std::vector<std::string>,std::vector<std::string>, std::string>
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(short_names, long_names, pos_name);
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}
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} // namespace detail
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} // namespace CLI
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