Fix invert flag not being zero initialized

CMakeLists.txt

@@ -1,6 +1,7 @@
-include(CMakeDependentOption)
-cmake_minimum_required(VERSION 3.1)
 project(roflcat)
+cmake_minimum_required(VERSION 3.1)
+include(CMakeDependentOption)
+include(GNUInstallDirs)
 
 #c++17 without compiler extensions
 set(CMAKE_CXX_STANDARD 17)

README.md

@@ -1,31 +1,42 @@
 # README
 
 ## About
-roflcat is a C++ rewrite of [lolcat][1] which runs much faster and supports all the options of GNU cat. I am not going to support the animation options of lolcat (--animate, --duration, --speed) because there is no real purpose to them.
+roflcat is a C++ rewrite of [lolcat][1] which runs much faster and supports all the options of GNU cat. I am not going to support the animation options of lolcat (--animate, --duration, --speed) because there is no real purpose to them.  
 Currently I can only confirm it runs on a linux system and I have no desire to expand to supporting anything else at this time.
 
 To keep compatability with both GNU cat and lolcat, I wanted all command line options from both to either be implemented or ignored. However there are a few conflicts between the two, namely -s -t and -v. For these I will be implementing the GNU cat functionality.
 
-Current version is 0.1a as of writing this, so if the version is much newer, remind me to update this readme :)
-![alt text](https://i.postimg.cc/1tYmJzxd/roflcat-usage.png "Screenshot of --help output")
+Current version is 1.1 as of writing this, so if the version is much newer, remind me to update this readme :)  
+![alt text](https://i.postimg.cc/0Qk6k34j/roflcat-usage.png "Screenshot of --help output")
+
+## Dependencies
+ncurses  
+cmake
 
 ## Building
-There is no release right now. There is only the debug build which will produce an executable called 'tester'.
-To build just run `make`.
+```
+mkdir build
+cd build
+cmake ..
+make
+```
 
 ## Installing
-I would not recommend installing at this time. There is no install target in the makefile.
+From within the build directory:  
+```
+make install
+```
 
 ## More Screenshots
 Some test outputs on a file filled with laughing cat emojis
 
-256 color:
+256 color:  
 ![alt text](https://i.postimg.cc/1tZC2k6r/roflcat-roflcats.png "roflcats in 256 color")
 
-Truecolor (24 bit):
+Truecolor (24 bit):  
 ![alt text](https://i.postimg.cc/tJF2527m/roflcat-roflcats-truecolor.png "roflcats in truecolor")
 
-16 color (type that will work in a tty):
+16 color (type that will work in a tty):  
 ![alt text](https://i.postimg.cc/LX99RbFj/roflcat-roflcats-16color.png "roflcats in 16 color")
 
 [1]: https://github.com/busyloop/lolcat

TODO

@@ -0,0 +1,2 @@
+move GNU cat logic out of printer class to make it more modular
+fix ^` not printing

include/cmd.hpp

@@ -22,15 +22,6 @@
 #include <vector> //std::vector
 #include <cstddef> //size_t
 
-struct cmd_options{
-	const char* lopt;
-	char sopt;
-	const char* desc;
-};
-
-extern const cmd_options cmd_arguments_list[];
-extern const size_t cmd_arguments_list_size;
-
 
 #define PRINT_LINE_NEVER    0
 #define PRINT_LINE_ALWAYS   1
@@ -46,8 +37,8 @@ struct cmd_args{
 
 	//lolcat options
 	long seed = 0;
-	float freq = 0.2f;
-	float spread = 0.3f;
+	float freq = 0.3f;
+	float spread = 0.4f;
 	unsigned truecol:1;
 	unsigned color:2;
 	unsigned invert:1;
@@ -58,6 +49,7 @@ struct cmd_args{
 	unsigned squeeze:1;
 	unsigned tabs:1;
 	unsigned nonprinting:1;
+	unsigned treatbinary:1;
 
 	//flags
 	unsigned error:1;
@@ -66,8 +58,20 @@ struct cmd_args{
 
 	cmd_args(void)noexcept;
 	void clear_gnu_options(void);
+	void set_nonprinting(bool = true);
 };
 
+struct cmd_options{
+	const char* lopt;
+	char sopt;
+	const char* desc;
+};
+
+extern const cmd_options cmd_arguments_list[];
+extern const size_t cmd_arguments_list_size;
+
+
+
 cmd_args process_cmd_args(int argc, char** argv);
 
 #endif

include/printer_base.tpp

@@ -96,9 +96,7 @@ auto printer_base<Derived>::print(const wchar_t* s)noexcept(noexcept(std::declva
 }
 template<class Derived>
 auto printer_base<Derived>::print(char s) -> Derived&{
-	wchar_t tmp;
-	mbstowcs(&tmp, &s, 1);
-	return print(tmp);
+	return print(static_cast<wchar_t>(s));
 }
 template<class Derived>
 auto printer_base<Derived>::print(const char* s) -> Derived&{

src/cmd.cpp

@@ -25,11 +25,14 @@
 #include <cstdlib> //atol
 
 cmd_args::cmd_args(void)noexcept:
-	truecol(0), color(0), number(0), ends(0), squeeze(0), tabs(0), nonprinting(0), error(0), usage(0), version(0){}
+	truecol(0), color(0), invert(0), number(0), ends(0), squeeze(0), tabs(0), nonprinting(0), treatbinary(0), error(0), usage(0), version(0){}
 void cmd_args::clear_gnu_options(void){
 	number = PRINT_LINE_NEVER;
 	ends = squeeze = tabs = nonprinting = 0;
 }
+void cmd_args::set_nonprinting(bool i){
+	nonprinting = treatbinary = i;
+}
 
 static constexpr size_t constexpr_strlen(const char* str){
 	size_t i = 0;
@@ -60,6 +63,10 @@ template<const char* S1, const char* S2>
 struct concat_many_strs<S1,S2>{
 	static constexpr const char* str = concat_strs<S1, S2>::str;
 };
+template<char... Cs>
+struct char_to_str{
+	static constexpr const char str[sizeof...(Cs)+1] = {Cs..., '\0'};
+};
 
 #define NO_LONG_OPTION nullptr
 #define REQ_INTEGER_ARG "=<i>"
@@ -74,6 +81,7 @@ static constexpr const char* VT_LONG_OPTION =                NO_LONG_OPTION;
 static constexpr const char SHOW_TABS_LONG_OPTION[] =        "show-tabs";
 static constexpr const char* U_IGNORED_LONG_OPTION =         NO_LONG_OPTION;
 static constexpr const char NONPRINTING_LONG_OPTION[] =      "show-nonprinting";
+static constexpr const char BINARY_LONG_OPTION[] =           "binary";
 static constexpr const char USAGE_LONG_OPTION[] =            "help";
 static constexpr const char VERSION_LONG_OPTION[] =          "version";
 static constexpr const char SEED_LONG_OPTION[] =             "seed" REQ_INTEGER_ARG;
@@ -88,64 +96,97 @@ static constexpr const char IGNORE_ANIMATE_LONG_OPTION[] =   "animate";
 static constexpr const char IGNORE_DURATION_LONG_OPTION[] =  "duration" REQ_INTEGER_ARG;
 static constexpr const char IGNORE_SPEED_LONG_OPTION[] =     "speed" REQ_FLOAT_ARG;
 
-#define NO_SHORT_OPTION ""
-static constexpr const char SHOW_ALL_SHORT_OPTION[] =        "A";
-static constexpr const char NUMBER_NONBLANK_SHORT_OPTION[] = "b";
-static constexpr const char TRUECOLOR_SHORT_OPTION[] =       "C";
-static constexpr const char VE_SHORT_OPTION[] =              "e";
-static constexpr const char SHOW_ENDS_SHORT_OPTION[] =       "E";
-static constexpr const char FORCE_COLOR_SHORT_OPTION[] =     "f";
-static constexpr const char FREQ_SHORT_OPTION[] =            "F";
-static constexpr const char USAGE_SHORT_OPTION[] =           "h";
-static constexpr const char INVERT_SHORT_OPTION[] =          "i";
-static constexpr const char NUMBER_LINES_SHORT_OPTION[] =    "n";
-static constexpr const char DISABLE_COLOR_SHORT_OPTION[] =   "N";
-static constexpr const char SPREAD_SHORT_OPTION[] =          "p";
-static constexpr const char SQUEEZE_BLANKS_SHORT_OPTION[] =  "s";
-static constexpr const char SEED_SHORT_OPTION[] =            "S";
-static constexpr const char VT_SHORT_OPTION[] =              "t";
-static constexpr const char SHOW_TABS_SHORT_OPTION[] =       "T";
-static constexpr const char U_IGNORED_SHORT_OPTION[] =       "u";
-static constexpr const char NONPRINTING_SHORT_OPTION[] =     "v";
+#define NO_SHORT_OPTION 0
+static constexpr char SHOW_ALL_SHORT_OPTION =        'A';
+static constexpr char NUMBER_NONBLANK_SHORT_OPTION = 'b';
+static constexpr char BINARY_SHORT_OPTION =          'B';
+static constexpr char TRUECOLOR_SHORT_OPTION =       'C';
+static constexpr char VE_SHORT_OPTION =              'e';
+static constexpr char SHOW_ENDS_SHORT_OPTION =       'E';
+static constexpr char FORCE_COLOR_SHORT_OPTION =     'f';
+static constexpr char FREQ_SHORT_OPTION =            'F';
+static constexpr char USAGE_SHORT_OPTION =           'h';
+static constexpr char INVERT_SHORT_OPTION =          'i';
+static constexpr char NUMBER_LINES_SHORT_OPTION =    'n';
+static constexpr char DISABLE_COLOR_SHORT_OPTION =   'N';
+static constexpr char SPREAD_SHORT_OPTION =          'p';
+static constexpr char SQUEEZE_BLANKS_SHORT_OPTION =  's';
+static constexpr char SEED_SHORT_OPTION =            'S';
+static constexpr char VT_SHORT_OPTION =              't';
+static constexpr char SHOW_TABS_SHORT_OPTION =       'T';
+static constexpr char U_IGNORED_SHORT_OPTION =       'u';
+static constexpr char NONPRINTING_SHORT_OPTION =     'v';
 
-static constexpr const char IGNORE_ANIMATE_SHORT_OPTION[] =  "a";
-static constexpr const char IGNORE_DURATION_SHORT_OPTION[] = "d";
-static constexpr const char* IGNORE_SPEED_SHORT_OPTION =     NO_SHORT_OPTION;
+static constexpr char IGNORE_ANIMATE_SHORT_OPTION =  'a';
+static constexpr char IGNORE_DURATION_SHORT_OPTION = 'd';
+static constexpr char IGNORE_SPEED_SHORT_OPTION =     NO_SHORT_OPTION;
 
-static constexpr const char* VERSION_SHORT_OPTION =          NO_SHORT_OPTION;
+static constexpr char VERSION_SHORT_OPTION =          NO_SHORT_OPTION;
 
 #define NO_DESC nullptr
 static constexpr const char IGNORED_DESC[] =                 "Ignored for compatability";
 static constexpr const char EQUIV_DESC_BASE[] =              "equivalent to -";
-static constexpr const char* SHOW_ALL_DESC =                 concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_ENDS_SHORT_OPTION,SHOW_TABS_SHORT_OPTION>::str;
+static constexpr const char* SHOW_ALL_DESC =                 concat_many_strs<EQUIV_DESC_BASE,char_to_str<NONPRINTING_SHORT_OPTION>::str,char_to_str<SHOW_ENDS_SHORT_OPTION>::str,char_to_str<SHOW_TABS_SHORT_OPTION>::str>::str;
 static constexpr const char NUMBER_NONBLANK_DESC_BASE[] =    "number nonempty output lines, overrides -";
-static constexpr const char* NUMBER_NONBLANK_DESC =          concat_many_strs<NUMBER_NONBLANK_DESC_BASE,SHOW_TABS_SHORT_OPTION>::str;
-static constexpr const char* VE_DESC =                       concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_ENDS_SHORT_OPTION>::str;
+static constexpr const char* NUMBER_NONBLANK_DESC =          concat_many_strs<NUMBER_NONBLANK_DESC_BASE,char_to_str<SHOW_TABS_SHORT_OPTION>::str>::str;
+static constexpr const char* VE_DESC =                       concat_many_strs<EQUIV_DESC_BASE,char_to_str<NONPRINTING_SHORT_OPTION>::str,char_to_str<SHOW_ENDS_SHORT_OPTION>::str>::str;
 static constexpr const char SHOW_ENDS_DESC[] =               "display $ at end of each line";
 static constexpr const char NUMBER_LINES_DESC[] =            "number all output lines";
 static constexpr const char SQUEEZE_BLANKS_DESC[] =          "suppress repeated empty output lines";
-static constexpr const char* VT_DESC =                       concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_TABS_SHORT_OPTION>::str;
+static constexpr const char* VT_DESC =                       concat_many_strs<EQUIV_DESC_BASE,char_to_str<NONPRINTING_SHORT_OPTION>::str,char_to_str<SHOW_TABS_SHORT_OPTION>::str>::str;
 static constexpr const char SHOW_TABS_DESC[] =               "display TAB characters as ^I";
 static constexpr const char* U_IGNORED_DESC =                IGNORED_DESC;
-static constexpr const char NONPRINTING_DESC[] =             "should use ^ and M- notation, except for LFD and TAB (not supported as of now)";
+static constexpr const char BINARY_DESC[] =                  "treat FILE as a binary file\n";
+static constexpr const char NONPRINTING_DESC_BASE[] =        "Use ^ and M- notation, except for LFD and TAB. Implies -";
+static constexpr const char* NONPRINTING_DESC =              concat_many_strs<NONPRINTING_DESC_BASE,char_to_str<BINARY_SHORT_OPTION>::str,char_to_str<'\n'>::str>::str;
 static constexpr const char USAGE_DESC[] =                   "display this help and exit";
 static constexpr const char VERSION_DESC[] =                 "output version information and exit";
 static constexpr const char SEED_DESC[] =                    "Rainbow seed, 0 = random (default: 0)";
-static constexpr const char SPREAD_DESC[] =                  "Rainbow spread (default: Not yet decided)";
-static constexpr const char FREQ_DESC[] =                    "Rainbow frequency (default: Not yet decided)";
+static constexpr const char SPREAD_DESC[] =                  "Rainbow spread (default: 0.4)";
+static constexpr const char FREQ_DESC[] =                    "Rainbow frequency (default: 0.3)";
 static constexpr const char TRUECOLOR_DESC[] =               "24-bit (truecolor)";
 static constexpr const char FORCE_COLOR_DESC[] =             "Force color even when stdout is not a tty";
 static constexpr const char DISABLE_COLOR_DESC_BASE[] =      "Suppress color even when stdout is a tty, overrides -";
-static constexpr const char* DISABLE_COLOR_DESC =            concat_many_strs<DISABLE_COLOR_DESC_BASE,FORCE_COLOR_SHORT_OPTION>::str;
-static constexpr const char INVERT_DESC[] =                  "Change background color instead of foreground";
+static constexpr const char* DISABLE_COLOR_DESC =            concat_many_strs<DISABLE_COLOR_DESC_BASE,char_to_str<FORCE_COLOR_SHORT_OPTION>::str>::str;
+static constexpr const char INVERT_DESC[] =                  "Change background color instead of foreground\n";
 
 static constexpr const char* IGNORE_ANIMATE_DESC =           IGNORED_DESC;
 static constexpr const char* IGNORE_DURATION_DESC =          IGNORED_DESC;
 static constexpr const char* IGNORE_SPEED_DESC =             IGNORED_DESC;
 
-#define SHORT_OPT(x) (x##_SHORT_OPTION)[0]
+#define SHORT_OPT(x) (x##_SHORT_OPTION)
 #define OPTION(x) {x##_LONG_OPTION, SHORT_OPT(x), x##_DESC}
 
+const cmd_options cmd_arguments_list[] = {
+	OPTION(SHOW_ALL),
+	OPTION(NUMBER_NONBLANK),
+	OPTION(VE),
+	OPTION(SHOW_ENDS),
+	OPTION(NUMBER_LINES),
+	OPTION(SQUEEZE_BLANKS),
+	OPTION(VT),
+	OPTION(SHOW_TABS),
+	OPTION(U_IGNORED),
+	OPTION(NONPRINTING),
+	OPTION(BINARY),
+	OPTION(SEED),
+	OPTION(SPREAD),
+	OPTION(FREQ),
+	OPTION(TRUECOLOR),
+	OPTION(FORCE_COLOR),
+	OPTION(DISABLE_COLOR),
+	OPTION(IGNORE_ANIMATE),
+	OPTION(IGNORE_DURATION),
+	OPTION(IGNORE_SPEED),
+	OPTION(INVERT),
+	OPTION(USAGE),
+	OPTION(VERSION)
+};
+const size_t cmd_arguments_list_size = sizeof(cmd_arguments_list)/sizeof(cmd_arguments_list[0]);
+
+
+
+
 
 static constexpr bool is_integer(const char* s){
 	if(*s != '-' && (*s < '0' || *s > '9')){
@@ -188,10 +229,11 @@ static constexpr size_t strlen_pre_eq(const char* str){
 	return i;
 }
 
+
 #define CHECK_VALID_LONG_ARG(opt, off, arg, type) \
 	{ \
 		if(arg[off] != '=' || !is_##type(arg+off+1)){ \
-			fwprintf(stderr, L"'--%.*s' requires an argument of type " #type "\n", off, opt); \
+			fprintf(stderr, "'--%.*s' requires an argument of type " #type "\n", off, opt); \
 			ret.error = 1; \
 			break; \
 		} \
@@ -202,7 +244,7 @@ static constexpr size_t strlen_pre_eq(const char* str){
 #define CHECK_VALID_SHORT_ARG(opt, arg, type) \
 	{ \
 		if(next_arg == argc || !is_##type(arg)){ \
-			fwprintf(stderr, L"'-%s' requires an argument of type " #type "\n", opt); \
+			fprintf(stderr, "'-%c' requires an argument of type " #type "\n", opt); \
 			ret.error = 1; \
 			break; \
 		} \
@@ -234,13 +276,15 @@ cmd_args process_cmd_args(int argc, char** argv){
 			for(size_t j = 1;j < arg_len;++j){
 				switch(argv[i][j]){
 				case SHORT_OPT(SHOW_ALL):
-					ret.nonprinting = ret.ends = ret.tabs = 1;
+					ret.set_nonprinting();
+					ret.ends = ret.tabs = 1;
 					break;
 				case SHORT_OPT(NUMBER_NONBLANK):
 					ret.number = PRINT_LINE_NONBLANK;
 					break;
 				case SHORT_OPT(VE):
-					ret.nonprinting = ret.ends = 1;
+					ret.set_nonprinting();
+					ret.ends = 1;
 					break;
 				case SHORT_OPT(SHOW_ENDS):
 					ret.ends = 1;
@@ -253,6 +297,7 @@ cmd_args process_cmd_args(int argc, char** argv){
 					ret.squeeze = 1;
 					break;
 				case SHORT_OPT(VT):
+					ret.set_nonprinting();
 					ret.nonprinting = ret.tabs = 1;
 					break;
 				case SHORT_OPT(SHOW_TABS):
@@ -261,7 +306,10 @@ cmd_args process_cmd_args(int argc, char** argv){
 				case SHORT_OPT(U_IGNORED):
 					break;
 				case SHORT_OPT(NONPRINTING):
-					ret.nonprinting = 1;
+					ret.set_nonprinting();
+					break;
+				case SHORT_OPT(BINARY):
+					ret.treatbinary = 1;
 					break;
 				case SHORT_OPT(USAGE):
 					ret.usage = 1;
@@ -306,7 +354,7 @@ cmd_args process_cmd_args(int argc, char** argv){
 				default:
 					//keep parsing after error so we can still properly output requested color style
 					ret.error = 1;
-					fwprintf(stderr, L"Unrecognized option '-%c'\n", argv[i][j]);
+					fprintf(stderr, "Unrecognized option '-%c'\n", argv[i][j]);
 				};
 			}
 			i = next_arg-1;
@@ -324,7 +372,9 @@ cmd_args process_cmd_args(int argc, char** argv){
 			}else if(CHECK_LONG_OPTION(SHOW_TABS, arg)){
 				ret.tabs = 1;
 			}else if(CHECK_LONG_OPTION(NONPRINTING, arg)){
-				ret.nonprinting = 1;
+				ret.set_nonprinting();
+			}else if(CHECK_LONG_OPTION(BINARY, arg)){
+				ret.treatbinary = 1;
 			}else if(CHECK_LONG_OPTION(USAGE, arg)){
 				ret.usage = 1;
 			}else if(CHECK_LONG_OPTION(VERSION, arg)){
@@ -339,15 +389,15 @@ cmd_args process_cmd_args(int argc, char** argv){
 			}else if(CHECK_LONG_OPTION(INVERT, arg)){
 				ret.invert = 1;
 			}else if(CHECK_LONG_OPTION_WITH_ARG(SEED, arg)){
-				constexpr size_t offset = strlen_pre_eq(SEED_LONG_OPTION);
+				constexpr int offset = strlen_pre_eq(SEED_LONG_OPTION);
 				CHECK_VALID_LONG_INT_ARG(SEED, offset, arg);
 				ret.seed = atol(arg+offset+1);
 			}else if(CHECK_LONG_OPTION_WITH_ARG(SPREAD, arg)){
-				constexpr size_t offset = strlen_pre_eq(SPREAD_LONG_OPTION);
+				constexpr int offset = strlen_pre_eq(SPREAD_LONG_OPTION);
 				CHECK_VALID_LONG_FLOAT_ARG(SPREAD, offset, arg);
 				ret.spread = atof(arg+offset+1);
 			}else if(CHECK_LONG_OPTION_WITH_ARG(FREQ, arg)){
-				constexpr size_t offset = strlen_pre_eq(FREQ_LONG_OPTION);
+				constexpr int offset = strlen_pre_eq(FREQ_LONG_OPTION);
 				CHECK_VALID_LONG_FLOAT_ARG(FREQ, offset, arg);
 				ret.freq = atof(arg+offset+1);
 			}else if(CHECK_LONG_OPTION(IGNORE_ANIMATE, arg)  ||
@@ -357,7 +407,7 @@ cmd_args process_cmd_args(int argc, char** argv){
 				;
 			}else{
 				ret.error = 1;
-				fwprintf(stderr, L"Unrecognized option '%s'\n", argv[i]);
+				fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
 			}
 		}else{
 			ret.filenames.push_back(argv[i]);
@@ -368,32 +418,3 @@ cmd_args process_cmd_args(int argc, char** argv){
 	}
 	return ret;
 }
-
-const cmd_options cmd_arguments_list[] = {
-	OPTION(SHOW_ALL),
-	OPTION(NUMBER_NONBLANK),
-	OPTION(VE),
-	OPTION(SHOW_ENDS),
-	OPTION(NUMBER_LINES),
-	OPTION(SQUEEZE_BLANKS),
-	OPTION(VT),
-	OPTION(SHOW_TABS),
-	OPTION(U_IGNORED),
-	OPTION(NONPRINTING),
-	{nullptr,0,nullptr}, //add newline to output
-	OPTION(SEED),
-	OPTION(SPREAD),
-	OPTION(FREQ),
-	OPTION(TRUECOLOR),
-	OPTION(FORCE_COLOR),
-	OPTION(DISABLE_COLOR),
-	OPTION(IGNORE_ANIMATE),
-	OPTION(IGNORE_DURATION),
-	OPTION(IGNORE_SPEED),
-	OPTION(INVERT),
-	{nullptr,0,nullptr},
-	OPTION(USAGE),
-	OPTION(VERSION)
-};
-const size_t cmd_arguments_list_size = sizeof(cmd_arguments_list)/sizeof(cmd_arguments_list[0]);
-

src/roflcat.cpp

@@ -33,8 +33,11 @@
 #include <cstddef> //size_t
 #include <chrono> //std::chrono::*
 #include <cstdlib> //srand
+#include <string> //char_traits
+#include <sys/types.h> //struct stat
+#include <sys/stat.h> //struct stat
 
-constexpr const char version_string[] = "roflcat version 1.0.4";
+constexpr const char version_string[] = "roflcat version 1.1";
 
 static constexpr size_t constexpr_strlen(const char* str){
 	size_t i = 0;
@@ -50,7 +53,7 @@ static constexpr size_t constexpr_strlen(const char* str){
 static int detect_term_colors(void){
 	int term_colors = 16;
 	if(setupterm(NULL, fileno(stdout), NULL) == ERR){
-		fwprintf(stderr, L"could not set up term\n");
+		fprintf(stderr, "could not set up term\n");
 	}else{
 		term_colors = tigetnum("colors");
 		if(term_colors < 0){
@@ -91,6 +94,7 @@ constexpr void print_usage(Printer&& p){
 		p.print(L'\n');
 	}
 	p.print(L"\nroflcat Copyright (C) 2019 rexy712\n");
+	p.print(L"Source code can be found at https://gitlab.com/rexy712/roflcat\n");
 	p.print(L"This program comes with ABSOLUTELY NO WARRANTY\n");
 	p.print(L"This is free software, and you are welcome to redistribute it\n");
 	p.print(L"under certain conditions; see the GNU GPLv3 for details.\n");
@@ -103,8 +107,133 @@ constexpr void print_version(Printer&& p){
 	p.reset();
 }
 
+void to_caret_notation(int in, char* dest){
+	dest[0] = '^';
+	dest[1] = in ^ 0x40;
+	dest[2] = 0;
+}
+void to_mdash_notation(int in, char* dest){
+	int corin = in & 0x7F;
+	dest[0] = 'M';
+	dest[1] = '-';
+	if(corin > 32 && corin < 127){
+		dest[2] = corin;
+		dest[3] = 0;
+	}else{
+		char tmp[3];
+		to_caret_notation(corin, tmp);
+		dest[2] = tmp[0];
+		dest[3] = tmp[1];
+		dest[4] = 0;
+	}
+}
+void nonprinting_notation(int in, char* dest){
+	if(in & 0x80){
+		to_mdash_notation(in, dest);
+	}else if(in == '\n' || in == '\t' || (in > 31 && in < 127)){
+		dest[0] = in;
+		dest[1] = 0;
+	}else{
+		to_caret_notation(in, dest);
+	}
+}
+
+bool is_directory(const char* file){
+	struct stat st;
+	if(stat(file, &st) != 0){
+		return false;
+	}
+	return S_ISDIR(st.st_mode);
+}
+bool file_exists(const char* file){
+	struct stat st;
+	return stat(file, &st) == 0;
+}
+FILE* open_file(const char* file, const char* mode){
+	if(is_directory(file)){
+		fflush(stdout);
+		fprintf(stderr, "Unable to open file \"%s\": Is a directory \n", file);
+		return nullptr;
+	}
+	if(!file_exists(file)){
+		fflush(stdout);
+		fprintf(stderr, "Unable to open file \"%s\": No such file\n", file);
+		return nullptr;
+	}
+	FILE* fp = fopen(file, mode);
+	if(!fp){
+		fflush(stdout);
+		fprintf(stderr, "Unable to open file for reading: \"%s\"\n", file);
+	}
+	return fp;
+}
+
+template<class T, class Printer, class Func>
+inline void do_stdin(Printer&& p, Func&& f){
+	for(T in;(in = f(stdin)) != std::char_traits<T>::eof();){
+		p.print(in);
+		if(in == '\n')
+			p.reset();
+	}
+	clearerr(stdin);
+}
 //Use the given type of printer to output the contents of files and/or stdin
 template<class Printer>
+int real_print_files(const cmd_args& args){
+	int ret = 0;
+	Printer p(args);
+	for(size_t i = 0;i < args.filenames.size();++i){
+		if(!strcmp(args.filenames[i], "-")){ //stdin
+
+			if(args.treatbinary){
+				//Don't check if buf is empty because that's not how GNU cat handles Ctrl+D in middle of line
+				for(int in;(in = fgetc(stdin)) != EOF;){
+					p.print(static_cast<char>(in));
+					if(in == L'\n') //Only reset on newline to save print overhead
+						p.reset();
+				}
+			}else{
+				for(wint_t in;(in = fgetwc(stdin)) != WEOF;){
+					p.print(static_cast<wchar_t>(in));
+					if(in == L'\n')
+						p.reset();
+				}
+			}
+			clearerr(stdin);
+
+		}else{ //everything besides stdin
+
+			FILE* fp = open_file(args.filenames[i], "r");
+			if(!fp){
+				ret = 2;
+				continue;
+			}
+			if(args.treatbinary){
+				if(args.nonprinting){
+					for(int in;(in = fgetc(fp)) != EOF;){
+						char tmp[5];
+						nonprinting_notation(in, tmp);
+						p.print(tmp);
+					}
+				}else{
+					for(int in;(in = fgetc(fp)) != EOF;)
+						p.print(static_cast<char>(in));
+				}
+			}else{
+				//set to wide character mode before anything
+				fwide(fp, 1);
+				for(wint_t in;(in = fgetwc(fp)) != WEOF;)
+					p.print(static_cast<wchar_t>(in));
+			}
+			p.reset();
+			fclose(fp);
+
+		}
+	}
+	p.reset();
+	return ret;
+}
+template<class Printer>
 int print_files(cmd_args& args){
 	if(args.usage){
 		args.clear_gnu_options();
@@ -115,37 +244,10 @@ int print_files(cmd_args& args){
 		print_version(Printer{args});
 		return 0;
 	}
-	int ret = 0;
-	Printer p(args);
-	for(size_t i = 0;i < args.filenames.size();++i){
-		if(!strcmp(args.filenames[i], "-")){ //stdin
 
-			//Don't check if buf is empty because that's not how GNU cat handles Ctrl+D in middle of line
-			for(wint_t in;(in = fgetwc(stdin)) != WEOF;){
-				p.print(static_cast<wchar_t>(in));
-				if(in == L'\n') //Only reset on newline to save print overhead
-					p.reset();
-			}
-			clearerr(stdin);
-		}else{ //everything besides stdin
-			FILE* fp = fopen(args.filenames[i], "r");
-			if(!fp){
-				fflush(stdout); //force color update before error
-				fwprintf(stderr, L"Unable to open file %s\n", args.filenames[i]);
-				ret = 2;
-				continue;
-			}
-			//set to wide character mode before anything
-			fwide(fp, 1);
-			for(wint_t in;(in = fgetwc(fp)) != WEOF;)
-				p.print(static_cast<wchar_t>(in));
-			p.reset();
-			fclose(fp);
-		}
-	}
-	p.reset();
-	return ret;
+	return real_print_files<Printer>(args);
 }
+
 auto get_time(void){
 	auto time = std::chrono::high_resolution_clock::now();
 	auto eptime = time.time_since_epoch();
@@ -159,7 +261,7 @@ int main(int argc, char** argv){
 	int avail_colors = detect_term_colors();
 
 	if(args.error){
-		fwprintf(stderr, L"Try '%s --help' for more information.\n", argv[0]);
+		fprintf(stderr, "Try '%s --help' for more information.\n", argv[0]);
 		return 1;
 	}
 
@@ -174,6 +276,5 @@ int main(int argc, char** argv){
 	}else if(avail_colors == 256){
 		return print_files<basic_color_printer<256>>(args);
 	}
-
 	return 0;
 }