rlib/rprint.h

// Written by retoor@molodetz.nl

// This source code provides a custom printing library for formatted output with optional color effects. It implements functions to print
// strings with various color enhancements and control codes for terminal manipulation.

// Includes: The code uses a custom header "rtime.h" to work with time-related functions.

// MIT License: Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial
// portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
// TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
// IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#ifndef RPRINT_H
#define RPRINT_H
#include "rtime.h"
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

long rpline_number = 0;
nsecs_t rprtime = 0;

int8_t _env_rdisable_colors = -1;
bool _rprint_enable_colors = true;

bool rprint_is_color_enabled() {
    if (_env_rdisable_colors == -1) {
        _env_rdisable_colors = getenv("RDISABLE_COLORS") != NULL;
    }
    if (_env_rdisable_colors) {
        _rprint_enable_colors = false;
    }
    return _rprint_enable_colors;
}

void rprint_disable_colors() { _rprint_enable_colors = false; }

void rprint_enable_colors() { _rprint_enable_colors = true; }

void rprint_toggle_colors() { _rprint_enable_colors = !_rprint_enable_colors; }

void rclear() { printf("\033[2J"); }

void rprintpf(FILE *f, const char *prefix, const char *format, va_list args) {
    bool reset_color = false;
    bool press_any_key = false;
    char new_format[4096];
    bool enable_color = rprint_is_color_enabled();

    memset(new_format, 0, sizeof(new_format));
    int new_format_length = 0;
    char temp[1000];
    memset(temp, 0, sizeof(temp));

    if (enable_color && prefix[0]) {
        strcat(new_format, prefix);
        new_format_length += strlen(prefix);
        reset_color = true;
    }

    while (*format) {
        if (format[0] == '\\' && format[1] == 'i') {
            strcat(new_format, "\e[3m");
            new_format_length += strlen("\e[3m");
            reset_color = true;
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'u') {
            strcat(new_format, "\e[4m");
            new_format_length += strlen("\e[4m");
            reset_color = true;
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'b') {
            strcat(new_format, "\e[1m");
            new_format_length += strlen("\e[1m");
            reset_color = true;
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'C') {
            press_any_key = true;
            rpline_number++;
            format += 2;
            reset_color = false;
        } else if (format[0] == '\\' && format[1] == 'k') {
            press_any_key = true;
            rpline_number++;
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'c') {
            rpline_number++;
            strcat(new_format, "\e[2J\e[H");
            new_format_length += strlen("\e[2J\e[H");
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'L') {
            rpline_number++;
            sprintf(temp, "%ld", rpline_number);
            strcat(new_format, temp);
            new_format_length += strlen(temp);
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'l') {
            rpline_number++;
            sprintf(temp, "%.5ld", rpline_number);
            strcat(new_format, temp);
            new_format_length += strlen(temp);
            format += 2;
        } else if (format[0] == '\\' && format[1] == 'T') {
            nsecs_t nsecs_now = nsecs();
            nsecs_t end = rprtime ? nsecs_now - rprtime : 0;
            sprintf(temp, "%s", format_time(end));
            strcat(new_format, temp);
            new_format_length += strlen(temp);
            rprtime = nsecs_now;
            format += 2;
        } else if (format[0] == '\\' && format[1] == 't') {
            rprtime = nsecs();
            format += 2;
        } else {
            new_format[new_format_length++] = *format++;
        }
    }

    if (reset_color) {
        strcat(new_format, "\e[0m");
        new_format_length += strlen("\e[0m");
    }

    new_format[new_format_length] = '\0';
    vfprintf(f, new_format, args);

    fflush(stdout);
    if (press_any_key) {
        nsecs_t s = nsecs();
        fgetc(stdin);
        rprtime += nsecs() - s;
    }
}

void rprintp(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "", format, args);
    va_end(args);
}

void rprintf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "", format, args);
    va_end(args);
}

void rprint(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "", format, args);
    va_end(args);
}

#define printf rprint

void rprintlf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\\l", format, args);
    va_end(args);
}

void rprintl(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\\l", format, args);
    va_end(args);
}

void rprintkf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[30m", format, args);
    va_end(args);
}

void rprintk(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[30m", format, args);
    va_end(args);
}

void rprintrf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[31m", format, args);
    va_end(args);
}

void rprintr(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[31m", format, args);
    va_end(args);
}

void rprintgf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[32m", format, args);
    va_end(args);
}

void rprintg(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[32m", format, args);
    va_end(args);
}

void rprintyf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[33m", format, args);
    va_end(args);
}

void rprinty(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[33m", format, args);
    va_end(args);
}

void rprintbf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[34m", format, args);
    va_end(args);
}

void rprintb(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[34m", format, args);
    va_end(args);
}

void rprintmf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[35m", format, args);
    va_end(args);
}

void rprintm(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[35m", format, args);
    va_end(args);
}

void rprintcf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[36m", format, args);
    va_end(args);
}

void rprintc(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[36m", format, args);
    va_end(args);
}

void rprintwf(FILE *f, const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(f, "\e[37m", format, args);
    va_end(args);
}

void rprintw(const char *format, ...) {
    va_list args;
    va_start(args, format);
    rprintpf(stdout, "\e[37m", format, args);
    va_end(args);
}
#endif