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Add parsing error color. #11

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Add parsing error color. #11

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33 changes: 32 additions & 1 deletion include/ns_getopt.h
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,10 @@
#include <cctype>
#include <cstring>

#ifdef WIN32
#include <windows.h>
#endif // WIN32

namespace opt {

/* List of argument types. */
Expand Down Expand Up @@ -97,6 +101,7 @@ enum flag : unsigned int {
, arguments_are_optional = 4
, arg0_is_normal_argument = 8
, dont_print_help = 16
, no_color = 32
};

inline flag operator|(flag lhs, flag rhs);
Expand Down Expand Up @@ -675,7 +680,33 @@ inline bool compare_no_case(const std::string& lhs , const std::string& rhs
inline void maybe_print_msg(const options& option, const std::string& msg) {
if (has_flag(option.flags, flag::no_user_error_messages))
return;
std::cout << msg << std::endl << std::endl;

if (has_flag(option.flags, flag::no_color)) {
std::cout << "Parsing error : " << msg << std::endl << std::endl;
return;
}

/* Print colors. */
#ifdef WIN32
/// @todo Find how to set bold text.
HANDLE console_handle = GetStdHandle(STD_OUTPUT_HANDLE);
CONSOLE_SCREEN_BUFFER_INFO consoleInfo;

/* Save current attributes. */
GetConsoleScreenBufferInfo(console_handle, &consoleInfo);

WORD saved_attributes;
saved_attributes = consoleInfo.wAttributes;

SetConsoleTextAttribute(console_handle, FOREGROUND_RED);
std::cout << "Parsing error : " << msg << std::endl << std::endl;

/* Restore original attributes. */
SetConsoleTextAttribute(console_handle, saved_attributes);
#else // Anything other than Windows.
std::cout << "\033[1;31mParsing error : " << msg << "\033[0m" <<
std::endl << std::endl;
#endif // WIN32
}

inline bool has_flag(const flag flags, flag flag_to_check) {
Expand Down