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Removed dependency on regex

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Henry Fredrick Schreiner 2017-02-01 11:22:31 -05:00
parent 1df5d9db93
commit a36e1ddfe6
1 changed files with 41 additions and 48 deletions
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89
include/CLI.hpp
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@ -16,6 +16,7 @@
#include <set> #include <set>
#include <iomanip> #include <iomanip>
#include <numeric> #include <numeric>
#include <vector>
// C standard library // C standard library
// Only needed for existence checking // Only needed for existence checking
@ -25,17 +26,6 @@
#include <locale> #include <locale>
// GCC 4.7 and 4.8 have an non-working implementation of regex
#include <regex>
#if __cplusplus >= 201103L \
&& (!defined(__GLIBCXX__) \
|| (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE>4) \
|| (__cplusplus >= 201402L) \
|| (defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) || defined(_GLIBCXX_REGEX_STATE_LIMIT)))
#define HAVE_WORKING_REGEX 1
#else
#define HAVE_WORKING_REGEX 0
#endif
//#define CLI_LOG 1 //#define CLI_LOG 1
@ -191,43 +181,6 @@ struct EmptyError : public Error {
EmptyError(std::string name) : Error("EmptyError", name, 9) {} EmptyError(std::string name) : Error("EmptyError", name, 9) {}
}; };
const std::regex reg_short{R"regex(-([a-zA-Z_])(.*))regex"};
const std::regex reg_long{R"regex(--([^-^=][^=]*)=?(.*))regex"};
// Returns false if not a short option. Otherwise, sets opt name and rest and returns true
inline bool split_short(const std::string &current, std::string &name, std::string &rest) {
std::smatch match;
if(std::regex_match(current, match, reg_short)) {
name = match[1];
rest = match[2];
return true;
} else
return false;
}
// Returns false if not a long option. Otherwise, sets opt name and other side of = and returns true
inline bool split_long(const std::string &current, std::string &name, std::string &value) {
std::smatch match;
if(std::regex_match(current, match, reg_long)) {
name = match[1];
value = match[2];
return true;
} else
return false;
}
// Splits a string into multiple long and short names
inline std::vector<std::string> split_names(std::string current) {
std::vector<std::string> output;
size_t val;
while((val = current.find(",")) != std::string::npos) {
output.push_back(current.substr(0,val));
current = current.substr(val+1);
}
output.push_back(current);
return output;
}
template<typename T> template<typename T>
bool valid_first_char(T c) { bool valid_first_char(T c) {
@ -248,6 +201,46 @@ inline bool valid_name_string(const std::string &str) {
return true; return true;
} }
// Returns false if not a short option. Otherwise, sets opt name and rest and returns true
inline bool split_short(const std::string &current, std::string &name, std::string &rest) {
if(current.size()>1 && current[0] == '-' && valid_first_char(current[1])) {
name = current.substr(1,1);
rest = current.substr(2);
return true;
} else
return false;
}
// Returns false if not a long option. Otherwise, sets opt name and other side of = and returns true
inline bool split_long(const std::string &current, std::string &name, std::string &value) {
if(current.size()>2 && current.substr(0,2) == "--" && valid_first_char(current[2])) {
auto loc = current.find("=");
if(loc != std::string::npos) {
name = current.substr(2,loc-2);
value = current.substr(loc+1);
} else {
name = current.substr(2);
value = "";
}
return true;
} else
return false;
}
// Splits a string into multiple long and short names
inline std::vector<std::string> split_names(std::string current) {
std::vector<std::string> output;
size_t val;
while((val = current.find(",")) != std::string::npos) {
output.push_back(current.substr(0,val));
current = current.substr(val+1);
}
output.push_back(current);
return output;
}
inline std::tuple<std::vector<std::string>,std::vector<std::string>> get_names(const std::vector<std::string> &input) { inline std::tuple<std::vector<std::string>,std::vector<std::string>> get_names(const std::vector<std::string> &input) {
std::vector<std::string> short_names; std::vector<std::string> short_names;
std::vector<std::string> long_names; std::vector<std::string> long_names;