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Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BASIC_COLOR_PRINTER_HPP
#define BASIC_COLOR_PRINTER_HPP
#include "color_printer_base.hpp"
namespace bcp_detail{//lookup tables for the basic_color_printer class
template<int I>
struct lookup_table{};
template<>
struct lookup_table<8>{
static constexpr const char* table[] = {"12","12","14","14","10","10","11","11","9","9","13","13"};
static constexpr long len = sizeof(table)/sizeof(table[0]); //long because of arithmetic promotion during modulo
};
template<>
struct lookup_table<16>:public lookup_table<8>{};
template<>
struct lookup_table<256>{
static constexpr const char* table[] = {"39", "38", "44", "43", "49", "48", "84", "83", "119", "118", "154", "148", "184", "178", "214", "208", "209", "203", "204", "198", "199", "163", "164", "128", "129", "93", "99", "63", "69", "33"};
static constexpr long len = sizeof(table)/sizeof(table[0]);
};
}
//For color systems which have an easily enumerated amount of colors (256 and lower essentially)
template<int I>
class basic_color_printer : public color_printer_base<basic_color_printer<I>>
{
friend class printer_base<basic_color_printer<I>>;
private:
static constexpr const char* const* color_lookup_table = bcp_detail::lookup_table<I>::table;
static constexpr long color_lookup_len = bcp_detail::lookup_table<I>::len;
private:
int m_col = 0; //current column number
int m_line = 0; //current line number
int m_index = -1; //index in lookup_table
public:
constexpr basic_color_printer(const cmd_args& args)noexcept;
~basic_color_printer(void)noexcept = default;
protected:
basic_color_printer& _print(const wchar_t s)noexcept;
constexpr basic_color_printer& _reset(void)noexcept;
constexpr void inc_col(int i);
constexpr void inc_line(void);
};
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef BASIC_COLOR_PRINTER_TPP
#define BASIC_COLOR_PRINTER_TPP
#include "basic_color_printer.hpp"
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE //for wcwidth
#endif
#include <cwchar> //wcwidth
#include <cstdio> //wprintf, putwchar
template<int I>
constexpr basic_color_printer<I>::basic_color_printer(const cmd_args& args)noexcept:
color_printer_base<basic_color_printer<I>>(args){}
template<int I>
basic_color_printer<I>& basic_color_printer<I>::_print(const wchar_t s)noexcept{
if(s == L'\n'){
inc_line();
}else{
int width = wcwidth(s);
if(width > 0)
inc_col(wcwidth(s));
else
inc_col(1);
}
long new_index = static_cast<int>(this->m_freq*m_col + this->m_spread*m_line) % color_lookup_len;
if(new_index < 0)
new_index += color_lookup_len;
if(new_index != m_index){
m_index = new_index;
wprintf(L"\033[38;5;%sm", color_lookup_table[m_index]);
}
putwchar(s);
return *this;
}
template<int I>
constexpr basic_color_printer<I>& basic_color_printer<I>::_reset(void)noexcept{
color_printer_base<basic_color_printer<I>>::_reset();
m_index = -1; //force color update on next print
return *this;
}
template<int I>
constexpr void basic_color_printer<I>::inc_col(int i){
m_col += i;
}
template<int I>
constexpr void basic_color_printer<I>::inc_line(void){
++m_line;
m_col = 0;
}
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CMD_HPP
#define CMD_HPP
#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
#define PRINT_LINE_NONBLANK 2
//struct of command line options/values
struct cmd_args{
std::vector<const char*> filenames;
float freq = 0.2f;
float spread = 0.3f;
unsigned number:2;
unsigned ends:1;
unsigned squeeze:1;
unsigned tabs:1;
unsigned nonprinting:1;
unsigned usage:1;
unsigned version:1;
cmd_args(void)noexcept;
void clear_gnu_options(void);
};
cmd_args process_cmd_args(int argc, char** argv);
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COLOR_PRINTER_BASE_HPP
#define COLOR_PRINTER_BASE_HPP
#include "printer_base.hpp"
#include "cmd.hpp"
//Provides some needed variables for the color printers
template<class Derived>
class color_printer_base : public printer_base<Derived>
{
protected:
const float m_freq;
const float m_spread;
protected:
constexpr color_printer_base(const cmd_args& args)noexcept:
printer_base<Derived>(args.tabs ? SHOW_TABS_STRING : L" ", args),
m_freq(args.freq), m_spread(m_freq < 0 ? -args.spread : args.spread){}
Derived& _reset(void){
wprintf(L"\033[0m");
return static_cast<Derived&>(*this);
}
};
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COLOR_PRINTER_MONO_HPP
#define COLOR_PRINTER_MONO_HPP
#include "printer_base.tpp"
#include "cmd.hpp"
#include <cstdio> //putwchar
//Uncolored printer
//Get it? color_printer_true and color_printer_false?!
class color_printer_false : public printer_base<color_printer_false>
{
friend class printer_base<color_printer_false>;
public:
constexpr color_printer_false(void)noexcept = default;
constexpr color_printer_false(const cmd_args& args)noexcept:
printer_base(args.tabs ? SHOW_TABS_STRING : L"\t", args){}
protected:
inline color_printer_false& _print(const wchar_t s)noexcept{
putwchar(s);
return *this;
}
};
//don't worry, i gave a sensible alias name
using color_printer_mono = color_printer_false;
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COLOR_PRINTER_TRUE_HPP
#define COLOR_PRINTER_TRUE_HPP
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE //for wcwidth
#endif
#include <cwchar> //wcwidth
#include "cmd.hpp"
#include "color_printer_base.hpp"
#include <cstdlib> //std::abs
#include <algorithm> //std::min, std::max
#include <cstdio> //wprintf, putwchar
//True color printer. Too many options to enumerate the entire list of possible colors, so we calculate on the fly
class color_printer_true : public color_printer_base<color_printer_true>
{
friend class printer_base<color_printer_true>;
private:
static constexpr const char* lookup_table[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", "100", "101", "102", "103", "104", "105", "106", "107", "108", "109", "110", "111", "112", "113", "114", "115", "116", "117", "118", "119", "120", "121", "122", "123", "124", "125", "126", "127", "128", "129", "130", "131", "132", "133", "134", "135", "136", "137", "138", "139", "140", "141", "142", "143", "144", "145", "146", "147", "148", "149", "150", "151", "152", "153", "154", "155", "156", "157", "158", "159", "160", "161", "162", "163", "164", "165", "166", "167", "168", "169", "170", "171", "172", "173", "174", "175", "176", "177", "178", "179", "180", "181", "182", "183", "184", "185", "186", "187", "188", "189", "190", "191", "192", "193", "194", "195", "196", "197", "198", "199", "200", "201", "202", "203", "204", "205", "206", "207", "208", "209", "210", "211", "212", "213", "214", "215", "216", "217", "218", "219", "220", "221", "222", "223", "224", "225", "226", "227", "228", "229", "230", "231", "232", "233", "234", "235", "236", "237", "238", "239", "240", "241", "242", "243", "244", "245", "246", "247", "248", "249", "250", "251", "252", "253", "254", "255"};
static constexpr long lookup_table_len = sizeof(lookup_table)/sizeof(lookup_table[0]);
static constexpr int color_min_amount = 20;
static constexpr int color_max_amount = 255;
enum class color{
red, green, blue
};
struct color_state{
int r = color_min_amount, g = color_min_amount, b = color_max_amount;
color curr = color::red;
constexpr color_state(void)noexcept = default;
constexpr color inc(void){
switch(curr){
default:
case color::red:
return (curr = color::green);
case color::green:
return (curr = color::blue);
case color::blue:
return (curr = color::red);
};
}
constexpr color dec(void){
switch(curr){
default:
case color::red:
return (curr = color::blue);
case color::green:
return (curr = color::red);
case color::blue:
return (curr = color::green);
};
}
}m_line_color = {}, m_color = {};
public:
constexpr color_printer_true(const cmd_args& args)noexcept:
color_printer_base<color_printer_true>(args){}
protected:
color_printer_true& _print(const wchar_t s)noexcept{
bool updated = false;
if(s == L'\n'){
inc_line();
updated = true;
}else{
int width = wcwidth(s);
if(width > 0)
updated = inc_color(wcwidth(s));
else
updated = inc_color(1);
}
if(updated)
wprintf(L"\033[38;2;%s;%s;%sm", lookup_table[m_color.r], lookup_table[m_color.g], lookup_table[m_color.b]);
putwchar(s);
return *this;
}
constexpr void inc_line(void){
int amount = m_spread*(float{color_max_amount}/4);
_do_inc_color(amount, m_line_color);
m_color = m_line_color;
}
constexpr bool inc_color(int i){
int amount = i*m_freq*(float{color_max_amount}/4);
if(amount == 0)
return false;
_do_inc_color(amount, m_color);
return true;
}
constexpr static void _do_inc_color(int amount, color_state& c){
int* curr = nullptr, *next = nullptr, *prev = nullptr;
color (color_state::*inc)(void) = nullptr;
if(amount > 0){
inc = &color_state::inc;
switch(c.curr){
default:
case color::red:
curr = &c.r;
prev = &c.b;
next = &c.g;
break;
case color::green:
curr = &c.g;
prev = &c.r;
next = &c.b;
break;
case color::blue:
curr = &c.b;
prev = &c.g;
next = &c.r;
break;
};
}else{
inc = &color_state::dec;
switch(c.curr){
default:
case color::red:
curr = &c.b;
prev = &c.r;
next = &c.g;
break;
case color::green:
curr = &c.r;
prev = &c.g;
next = &c.b;
break;
case color::blue:
curr = &c.g;
prev = &c.b;
next = &c.r;
break;
};
}
amount = std::abs(amount);
while(amount != 0){
int old = *curr;
*curr = std::min((*curr)+amount, color_max_amount);
amount = (old+amount)-(*curr);
old = *prev;
*prev = std::max((*prev)-amount, color_min_amount);
amount = (amount-old)+(*prev);
if((*prev) == color_min_amount){
(c.*inc)();
int* tmp = curr;
curr = next;next = prev;prev = tmp;
}
}
}
};
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PRINTER_BASE_HPP
#define PRINTER_BASE_HPP
#include "cmd.hpp"
#include <type_traits> //std::is_same
#include <utility> //std::declval
#define SHOW_TABS_STRING L"^I"
#define LINE_NUMBERING_SPACE STRINGIFY(8)
#define REAL_STRINGIFY(x) #x
#define STRINGIFY(x) REAL_STRINGIFY(x)
//name of struct generated by OPTIONAL_MEMBER_FUNC for given x
#define HAS_FUNC(x) _determine_has_member_func_##x
//generate utility struct to determine if a given class has a member function
#define OPTIONAL_MEMBER_FUNC(x) \
template<class U, class Ret = void, class... Args> \
struct HAS_FUNC(x){ \
private: \
template<class T, Ret& (T::*)(Args...)> \
struct check_s{}; \
template<class T> \
static char test(check_s<T, &T::x>*); \
template<class T> \
static int test(...); \
public: \
static constexpr bool value = std::is_same<char,decltype(test<U>(nullptr))>::value; \
}
//Defines an interface for the base classes
//require a _print and an optional _reset function
template<class Derived>
class printer_base
{
private:
OPTIONAL_MEMBER_FUNC(_reset);
private:
const bool m_show_ends = false;
const int m_print_ln = PRINT_LINE_NEVER;
const bool m_squeeze_blank = false;
int m_squeeze_cnt = 0;
bool m_newline = true;
int m_line_num = 1;
const wchar_t* const m_tab_str = L"\t";
const size_t m_tab_size = 1;
protected:
constexpr printer_base(void)noexcept = default;
constexpr printer_base(const wchar_t* tabstr, const cmd_args& args)noexcept;
~printer_base(void)noexcept = default;
public:
constexpr Derived& print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s)));
constexpr Derived& print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>())));
constexpr Derived& print(char s);
constexpr Derived& print(const char* s);
constexpr Derived& reset(void);
};
#endif

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PRINTER_BASE_TPP
#define PRINTER_BASE_TPP
#include "printer_base.hpp"
#include "cmd.hpp"
#include <utility> //std::declval
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE //wcwidth
#endif
#include <cwchar> //wcwidth
#include <cstdio> //wprintf, putwchar
#include <cstdlib> //mbstowcs
template<class Derived>
constexpr printer_base<Derived>::printer_base(const wchar_t* tabstr, const cmd_args& args)noexcept:
m_show_ends(args.ends),
m_print_ln(args.number),
m_squeeze_blank(args.squeeze),
m_tab_str(tabstr),
m_tab_size(wcslen(tabstr)){}
template<class Derived>
constexpr auto printer_base<Derived>::print(wchar_t s)noexcept(noexcept(std::declval<Derived>()._print(s))) -> Derived&{
Derived& dv = static_cast<Derived&>(*this);
//suppress repeated blank lines
if(m_squeeze_blank){
//if 2 newlines in a row
if(m_newline && s == L'\n'){
if(m_squeeze_cnt == 0){
//don't suppress the first blank line
++m_squeeze_cnt;
}else{
return dv;
}
}else{
m_squeeze_cnt = 0;
}
}
//if we want to print line numbers and our last char was a newline
if(m_print_ln != PRINT_LINE_NEVER && m_newline){
//if we want to print always or if we want nonblanks and last char wasn't a newline (ie nonblank)
if(m_print_ln == PRINT_LINE_ALWAYS || s != L'\n'){
m_newline = false;
wchar_t buffer[24]; //excessive
swprintf(buffer, sizeof(buffer)/sizeof(buffer[0])-1, L"%" LINE_NUMBERING_SPACE "d", m_line_num++);
for(wchar_t* c = buffer;*c != 0;++c){
dv._print(*c);
}
dv._print(L' ');
}
}
//update status of last character
if(s == L'\n'){
m_newline = true;
if(m_show_ends)
dv._print(L'$');
}else{
m_newline = false;
}
//tabs character can be changed with the -T switch, so treat it special
if(s == L'\t'){
for(size_t i = 0;i < m_tab_size;++i){
dv._print(m_tab_str[i]);
}
}else{
dv._print(s);
}
return dv;
}
template<class Derived>
constexpr auto printer_base<Derived>::print(const wchar_t* s)noexcept(noexcept(std::declval<printer_base<Derived>>().print(std::declval<wchar_t>()))) -> Derived&{
for(;*s != 0;++s){
print(*s);
}
return static_cast<Derived&>(*this);
}
template<class Derived>
constexpr auto printer_base<Derived>::print(char s) -> Derived&{
wchar_t tmp;
mbstowcs(&tmp, &s, 1);
return print(tmp);
}
template<class Derived>
constexpr auto printer_base<Derived>::print(const char* s) -> Derived&{
for(;*s != 0;++s){
print(*s);
}
return static_cast<Derived&>(*this);
}
template<class Derived>
constexpr auto printer_base<Derived>::reset(void) -> Derived&{
if constexpr(HAS_FUNC(_reset)<Derived,Derived&>::value){
return static_cast<Derived&>(*this)._reset();
}else{
return static_cast<Derived&>(*this);
}
}
#endif

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#This program is free software: you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation, either version 3 of the License, or
#(at your option) any later version.
#This program is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#GNU General Public License for more details.
#You should have received a copy of the GNU General Public License
#along with this program. If not, see <http://www.gnu.org/licenses/>.
#Copyright 2018 rexy712
SOURCE_DIRS:=src
OBJDIR:=obj
DEPDIR:=$(OBJDIR)/dep
INCLUDE_DIRS:=include
EXT:=cpp
MAIN_EXECUTABLE:=tester
CXX:=g++
CXXFLAGS:=-g -std=c++17 -Wall -pedantic -Wextra -fno-exceptions -fno-rtti
all: CXXFLAGS+=-O0
release: CXXFLAGS+=-O2
LDFLAGS=
LDLIBS:=-lncurses
STRIP:=strip
memchk:LDFLAGS+=-fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls
memchk:CXXFLAGS+=-O0 -fsanitize=address -fno-omit-frame-pointer -fno-optimize-sibling-calls
ifeq ($(OS),Windows_NT)
mkdir=mkdir $(subst /,\,$(1)) > NUL 2>&1
rm=del /F $(1) > NUL 2>&1
rmdir=rd /s /q $(1) > NUL 2>&1
move=move /y $(subst /,\,$(1)) $(subst /,\,$(2)) > NUL 2>&1
MAIN_EXECUTABLE:=$(MAIN_EXECUTABLE).exe
LDLIBS:=-lglfw3 -lSOIL -lgl3w -lm -lopengl32 -lglu32 -lgdi32 -lkernel32
else
mkdir=mkdir -p $(1)
rm=rm -f $(1)
rmdir=rm -rf $(1)
move=mv $(1) $(2)
endif
INTERNAL_CXXFLAGS=-c $(foreach dir,$(INCLUDE_DIRS),-I"$(dir)") -MMD -MP -MF"$(DEPDIR)/$(notdir $(patsubst %.o,%.d,$@))"
SOURCES:=$(foreach source,$(SOURCE_DIRS),$(foreach ext,$(EXT),$(wildcard $(source)/*.$(ext))))
OBJECTS:=$(addprefix $(OBJDIR)/,$(subst \,.,$(subst /,.,$(addsuffix .o,$(SOURCES)))))
all: $(MAIN_EXECUTABLE)
memchk: $(MAIN_EXECUTABLE)
$(MAIN_EXECUTABLE): $(OBJECTS)
$(CXX) $(LDFLAGS) $^ -o "$(basename $@)" $(LDLIBS)
.PHONY: release
release: $(OBJECTS)
$(CXX) $(LDFLAGS) $^ -o "$(basename $(MAIN_EXECUTABLE))" $(LDLIBS)
$(STRIP) --strip-all "$(MAIN_EXECUTABLE)"
define GENERATE_OBJECTS
$$(OBJDIR)/$(subst \,.,$(subst /,.,$(1))).%.o: $(1)/%
$$(CXX) $$(CXXFLAGS) $$(INTERNAL_CXXFLAGS) "$$<" -o "$$@"
endef
$(foreach dir,$(SOURCE_DIRS),$(eval $(call GENERATE_OBJECTS,$(dir))))
$(OBJECTS): | $(OBJDIR) $(DEPDIR)
$(OBJDIR):
$(call mkdir,"$@")
$(DEPDIR):
$(call mkdir,"$@")
.PHONY: clean
clean:
$(call rmdir,"$(DEPDIR)")
$(call rmdir,"$(OBJDIR)")
$(call rm,"$(MAIN_EXECUTABLE)")
-include $(wildcard $(DEPDIR)/*.d)

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "cmd.hpp"
#include <cstddef> //size_t
#include <cstring> //strncmp
#include <cwchar>
#include <cstdio> //fwprintf, stderr
cmd_args::cmd_args(void)noexcept:
number(0), ends(0), squeeze(0), tabs(0), nonprinting(0), usage(0), version(0){}
void cmd_args::clear_gnu_options(void){
number = PRINT_LINE_NEVER;
ends = squeeze = tabs = nonprinting = 0;
}
static constexpr size_t constexpr_strlen(const char* str){
size_t i = 0;
for(;*str;++str,++i){
if(*str == '\0'){
break;
}
}
return i;
}
template<const char* S1, const char* S2, size_t I = 0, size_t J = 0, size_t Size1 = constexpr_strlen(S1), size_t Size2 = constexpr_strlen(S2), char... Cs>
struct concat_strs{
static constexpr const char* str = concat_strs<S1,S2,I+1,J,Size1-1,Size2,Cs...,S1[I]>::str;
};
template<const char* S1, const char* S2, size_t I, size_t J, size_t Size2, char... Cs>
struct concat_strs<S1,S2,I,J,0,Size2,Cs...>{
static constexpr const char* str = concat_strs<S1,S2,I,J+1,0,Size2-1,Cs...,S2[J]>::str;
};
template<const char* S1, const char* S2, size_t I, size_t J, char... Cs>
struct concat_strs<S1,S2,I,J,0,0,Cs...>{
static constexpr const char str[sizeof...(Cs)+1] = {Cs..., '\0'};
};
template<const char* S1, const char* S2, const char*... Strs>
struct concat_many_strs{
static constexpr const char* str = concat_many_strs<concat_strs<S1,S2>::str, Strs...>::str;
};
template<const char* S1, const char* S2>
struct concat_many_strs<S1,S2>{
static constexpr const char* str = concat_strs<S1, S2>::str;
};
#define NO_LONG_OPTION nullptr
constexpr const char SHOW_ALL_LONG_OPTION[] = "show-all";
constexpr const char NUMBER_NONBLANK_LONG_OPTION[] = "number-nonblank";
constexpr const char* VE_LONG_OPTION = NO_LONG_OPTION;
constexpr const char SHOW_ENDS_LONG_OPTION[] = "show-ends";
constexpr const char NUMBER_LINES_LONG_OPTION[] = "number";
constexpr const char SQUEEZE_BLANKS_LONG_OPTION[] = "squeeze-blank";
constexpr const char* VT_LONG_OPTION = NO_LONG_OPTION;
constexpr const char SHOW_TABS_LONG_OPTION[] = "show-tabs";
constexpr const char* U_IGNORED_LONG_OPTION = NO_LONG_OPTION;
constexpr const char NONPRINTING_LONG_OPTION[] = "show-nonprinting";
constexpr const char USAGE_LONG_OPTION[] = "help";
constexpr const char VERSION_LONG_OPTION[] = "version";
#define NO_SHORT_OPTION ""
constexpr const char SHOW_ALL_SHORT_OPTION[] = "A";
constexpr const char NUMBER_NONBLANK_SHORT_OPTION[] = "b";
constexpr const char VE_SHORT_OPTION[] = "e";
constexpr const char SHOW_ENDS_SHORT_OPTION[] = "E";
constexpr const char NUMBER_LINES_SHORT_OPTION[] = "n";
constexpr const char SQUEEZE_BLANKS_SHORT_OPTION[] = "s";
constexpr const char VT_SHORT_OPTION[] = "t";
constexpr const char SHOW_TABS_SHORT_OPTION[] = "T";
constexpr const char U_IGNORED_SHORT_OPTION[] = "u";
constexpr const char NONPRINTING_SHORT_OPTION[] = "v";
constexpr const char USAGE_SHORT_OPTION[] = "h";
constexpr const char* VERSION_SHORT_OPTION = NO_SHORT_OPTION;
#define NO_DESC nullptr
constexpr const char EQUIV_DESC_BASE[] = "equivalent to -";
constexpr const char* SHOW_ALL_DESC = concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_ENDS_SHORT_OPTION,SHOW_TABS_SHORT_OPTION>::str;
constexpr const char NUMBER_NONBLANK_DESC_BASE[] = "number nonempty output lines, overrides -";
constexpr const char* NUMBER_NONBLANK_DESC = concat_many_strs<NUMBER_NONBLANK_DESC_BASE,SHOW_TABS_SHORT_OPTION>::str;
constexpr const char* VE_DESC = concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_ENDS_SHORT_OPTION>::str;
constexpr const char SHOW_ENDS_DESC[] = "display $ at end of each line";
constexpr const char NUMBER_LINES_DESC[] = "number all output lines";
constexpr const char SQUEEZE_BLANKS_DESC[] = "suppress repeated empty output lines";
constexpr const char* VT_DESC = concat_many_strs<EQUIV_DESC_BASE,NONPRINTING_SHORT_OPTION,SHOW_TABS_SHORT_OPTION>::str;
constexpr const char SHOW_TABS_DESC[] = "desplay TAB characters as ^I";
constexpr const char U_IGNORED_DESC[] = "(ignored)";
constexpr const char NONPRINTING_DESC[] = "should use ^ and M- notation, except for LFD and TAB (not supported as of now)";
constexpr const char USAGE_DESC[] = "display this help and exit";
constexpr const char VERSION_DESC[] = "output version information and exit";
#define SHORT_OPT(x) (x##_SHORT_OPTION)[0]
#define OPTION(x) {x##_LONG_OPTION, SHORT_OPT(x), x##_DESC}
#define CHECK_LONG_OPTION(x, arg) (!strncmp(x##_LONG_OPTION, arg, strlen(x##_LONG_OPTION)))
#define IS_SHORT_OPTION(arg) ((arg)[0] == '-' && (arg)[1] != '-')
#define IS_LONG_OPTION(arg) ((arg)[0] == '-' && (arg)[1] == '-')
//Convert command line options to a cmd_args struct
cmd_args process_cmd_args(int argc, char** argv){
cmd_args ret;
bool escaped = false;
for(int i = 1;i < argc;++i){
if(escaped){
ret.filenames.push_back(argv[i]);
continue;
}
if(!strcmp(argv[i], "--")){
escaped = true;
}else if(IS_SHORT_OPTION(argv[i])){
size_t arg_len = strlen(argv[i]);
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;
break;
case SHORT_OPT(NUMBER_NONBLANK):
ret.number = PRINT_LINE_NONBLANK;
break;
case SHORT_OPT(VE):
ret.nonprinting = ret.ends = 1;
break;
case SHORT_OPT(SHOW_ENDS):
ret.ends = 1;
break;
case SHORT_OPT(NUMBER_LINES):
if(!ret.number)
ret.number = PRINT_LINE_ALWAYS;
break;
case SHORT_OPT(SQUEEZE_BLANKS):
ret.squeeze = 1;
break;
case SHORT_OPT(VT):
ret.nonprinting = ret.tabs = 1;
break;
case SHORT_OPT(SHOW_TABS):
ret.tabs = 1;
break;
case SHORT_OPT(U_IGNORED):
break;
case SHORT_OPT(NONPRINTING):
ret.nonprinting = 1;
break;
case SHORT_OPT(USAGE):
ret.usage = 1;
break;
case SHORT_OPT(VERSION):
ret.version = 1;
break;
default:
//keep parsing after error so we can still properly output requested color style
ret.usage = 1;
fwprintf(stderr, L"Unrecognized option '-%c'\n", argv[i][j]);
};
}
}else if(IS_LONG_OPTION(argv[i])){
const char* arg = argv[i]+2;
if(CHECK_LONG_OPTION(SHOW_ENDS, arg)){
ret.ends = 1;
}else if(CHECK_LONG_OPTION(NUMBER_NONBLANK, arg)){
ret.number = PRINT_LINE_NONBLANK;
}else if(CHECK_LONG_OPTION(SHOW_ENDS, arg)){
ret.ends = 1;
}else if(CHECK_LONG_OPTION(NUMBER_LINES, arg)){
if(!ret.number)
ret.number = PRINT_LINE_ALWAYS;
}else if(CHECK_LONG_OPTION(SQUEEZE_BLANKS, arg)){
ret.squeeze = 1;
}else if(CHECK_LONG_OPTION(SHOW_TABS, arg)){
ret.tabs = 1;
}else if(CHECK_LONG_OPTION(NONPRINTING, arg)){
ret.nonprinting = 1;
}else if(CHECK_LONG_OPTION(USAGE, arg)){
ret.usage = 1;
}else if(CHECK_LONG_OPTION(VERSION, arg)){
ret.version = 1;
}else{
ret.usage = 1;
fwprintf(stderr, L"Unrecognized option '%s'\n", argv[i]);
}
}else{
ret.filenames.push_back(argv[i]);
}
}
if(ret.filenames.size() == 0){
ret.filenames.push_back("-");
}
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),
OPTION(USAGE),
OPTION(VERSION)
};
const size_t cmd_arguments_list_size = sizeof(cmd_arguments_list)/sizeof(cmd_arguments_list[0]);

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/**
roflcat
Copyright (C) 2019 rexy712
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "color_printer_mono.hpp"
#include "color_printer_true.hpp"
#include "basic_color_printer.tpp"
#include "color_printer_base.hpp"
#include "printer_base.tpp"
#include "cmd.hpp"
#include <cwchar> //fgetwc
#include <cstdio> //wprintf, fgetwc, fileno
#include <locale.h> //setlocale
#include <curses.h> //setupterm, tigetnum, del_curterm
#include <term.h> //setupterm, tigetnum, del_curterm
#include <unistd.h> //isatty
#include <cstring> //strcmp
#include <cstddef> //size_t
constexpr const char* version_string = "roflcat version 0.1a";
static constexpr size_t constexpr_strlen(const char* str){
size_t i = 0;
for(;*str;++str,++i){
if(*str == '\0'){
break;
}
}
return i;
}
//Use ncurses (tinfo) to get the terminal's available color count
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");
}else{
term_colors = tigetnum("colors");
if(term_colors < 0){
term_colors = 16; //default to 16 color
}
del_curterm(cur_term);
}
return term_colors;
}
template<class Printer>
constexpr void print_usage(Printer&& p){
p.print(L"Usage: roflcat [OPTION]... [FILE]...\n");
p.print(L"Concatenate FILE(s) to standard output with rainbows!\n");
p.print(L"\nWith no FILE, or when FILE is -, read standard input.\n\n");
for(size_t i = 0;i < cmd_arguments_list_size;++i){
const cmd_options& op = cmd_arguments_list[i];
size_t spacing = 6;
p.print(L' ').print(L' ');
if(op.sopt){
p.print(L'-').print(op.sopt);
if(op.lopt)
p.print(L',').print(L' ');
}else{
p.print(L' ').print(L' ').print(L' ').print(L' ');
}
if(op.lopt){
spacing += constexpr_strlen(op.lopt)+4;
p.print(L'-').print(L'-');
p.print(op.lopt);
}
for(size_t j = spacing;j < 30;++j){
p.print(L' ');
}
if(op.desc){
p.print(op.desc);
}
p.print(L'\n');
}
p.print(L"\nroflcat Copyright (C) 2019 rexy712\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");
p.print(L"A copy of the GPLv3 is available with the source in the file 'LICENSE'\n");
p.reset();
}
template<class Printer>
constexpr void print_version(Printer&& p){
p.print(version_string).print(L'\n');
p.reset();
}
//Use the given type of printer to output the contents of files and/or stdin
template<class Printer>
void print_files(cmd_args& args){
if(args.usage){
args.clear_gnu_options();
print_usage(Printer{args});
return;
}else if(args.version){
args.clear_gnu_options();
print_version(Printer{args});
return;
}
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();
}
}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]);
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();
}
int main(int argc, char** argv){
setlocale(LC_ALL, ""); //change to system locale so wchar_t things work
cmd_args args = process_cmd_args(argc, argv);
int avail_colors = detect_term_colors();
//print_files<color_printer_true>(args);
//if stdout is not a tty, disable color
if(!isatty(fileno(stdout))){
print_files<color_printer_mono>(args);
}else if(avail_colors == 8 || avail_colors == 16){
print_files<basic_color_printer<16>>(args);
}else if(avail_colors == 256){
print_files<basic_color_printer<256>>(args);
}
return 0;
}