Allow for 2 digit years.

Y2K is sufficiently long ago, why not invite a
Y2.1K bug?  :-P

cudir.cc

@@ -5,8 +5,13 @@
 #include <algorithm>
 #include <filesystem>
 
+#include <Alepha/ProgramOptions.h>
+
+#include <Alepha/Utility/enroll.h>
+
 #include "Entry.h"
 
+
 auto
 getEntries( const std::filesystem::path where )
 {
@@ -31,26 +36,48 @@ getEntries( const std::filesystem::path where )
 	return entries;
 }
 
-	using namespace std::literals::string_literals;
+using namespace std::literals::string_literals;
 
 namespace C
 {
 	constexpr int sizeWidth= 14;
 	constexpr int dateWidth= "1982-12-21"s.size();
+	constexpr int shortDateWidth= "82-12-21"s.size();
 	constexpr int timeWidth= "12:34"s.size();
+	constexpr int modeBitsWidth= "drwxrwxrwx"s.size();
+}
+
+namespace O
+{
+	bool twoDigitDate= false;
+
+	auto init= Alepha::Utility::enroll <=[]
+	{
+		using namespace Alepha::ProgramOptions_m;
+
+		--"short-date"_option << twoDigitDate << "Use short 2-digit years in date stamps";
+	};
+}
+
+inline int
+trimYear( const int year )
+{
+	if( O::twoDigitDate ) return year % 100;
+	else return year;
 }
 
 int
-main()
+main( const int argcnt, const char *const argvec[] )
 {
 	std::filesystem::path where="./";
+	const auto args= Alepha::handleOptions( argcnt, argvec );
 
 	const auto entries= getEntries( where );
 
 	const auto widest= std::max_element( begin( entries ), end( entries ),
 			[]( const auto &lhs, const auto &rhs ) { return lhs.name.size() < rhs.name.size(); } )->name.size();
 
-	const int rowWidth= widest + C::filePadding + C::sizeWidth + 2 + 10 + 2 + C::dateWidth + 1 + C::timeWidth;
+	const int rowWidth= widest + C::filePadding + C::sizeWidth + 1 + C::modeBitsWidth + 2 + ( O::twoDigitDate ? C::shortDateWidth : C::dateWidth )+ 1 + C::timeWidth;
 
 	std::cout << "";
 	for( int i= 0; i < rowWidth; ++i ) std::cout << "\u2500";
@@ -83,7 +110,7 @@ main()
 
 		// Date
 		std::cout << "\e[1;31;91m";
-		std::cout << std::setw( 2 ) << std::setfill( '0' ) << entry.year % 10000 << '-';
+		std::cout << std::setw( 2 ) << std::setfill( '0' ) << trimYear( entry.year % 10000 ) << '-';
 		std::cout << std::setw( 2 ) << std::setfill( '0' ) << entry.month << '-';
 		std::cout << std::setw( 2 ) << std::setfill( '0' ) << entry.day;
 		std::cout << "\e[m";