rbtext/rbtext.c

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/*
Rainbow Text (rbtext)
$ gcc -o rbtext rbtext.c
Created by Seelenlos <samoyo@protonmail.com>
NO WARRANTY OF ANY KIND.
NO LIABILITY TO CREATOR FOR ANY TYPE OF DAMAGE.
I DON'T CARE HOW YOU USE OR CONFIGURE THIS PROGRAM.
*/
#include <stdio.h>
#include <stdlib.h>
#include <memory.h>
#include <unistd.h>
// How many milliseconds the program will wait until the next print ( DEFAULT = 100 )
#define CONF_SLEEP_TIMEMS 100
// How many times a color should be shown before switching to the next ( DEFAULT = 2 )
#define CONF_COLOR_LAG 2
// BEWARE RICERS
// If you add extra colors make sure to
// a) Add it to the color enum
// b) Add the case to the switch statement in the genColors function
// c) Update the COLORS definition with the new amount of colors
// FORMAT
// #define COLOR "R;G;B"
#define RED "193;71;87"
#define ORANGE "193;116;71"
#define YELLOW "193;177;71"
#define GREEN "149;193;71"
#define CYAN "71;193;161"
#define BLUE "71;165;193"
#define PURPLE "155;71;193"
#define PINK "193;71;153"
#define COLORS 8
enum color {
red,orange,yellow,green,cyan,blue,purple,pink
};
#define addcase(enum, defin)\
case enum:\
cstr = "\e[38;2;"defin"m";\
break;
unsigned long long t = 0;
void genColors(char *s) {
char *cstr = malloc(20 * sizeof(char));
for (int i = 0; i < strlen(s); i++) {
enum color c = (((t + i) / CONF_COLOR_LAG) % COLORS);
switch (c) {
//addcase(enum value, #define name)
addcase(red, RED);
addcase(orange, ORANGE);
addcase(yellow, YELLOW);
addcase(green, GREEN);
addcase(cyan, CYAN);
addcase(blue, BLUE);
addcase(purple, PURPLE);
addcase(pink, PINK);
}
printf("%s%c",cstr,s[i]);
}
}
int main(int carg, char **varg) {
if (carg < 2) {
printf("\e[1;31m[ERROR]\e[0m No arguments given.\n\tUSAGE: \e[34m%s \e[33m<text>\e[0m\n",varg[0]);
return 1;
}
char *text = malloc(1024 * sizeof(char));
// Similar to pythons str.join(' ') method
// Adds all the arguments together with spaces seperating them
// EG: ./rbtext hello world > "hello world"
for (int i = 1, j = 0; i < carg; i++) {
for (int k = 0; k < strlen(varg[i]); k++, j++) {
text[j] = varg[i][k];
}
text[j] = ' ';
j++;
}
while (1) {
printf("\r\e[2K");
genColors(text);
printf("\e[0m");
fflush(stdout);
usleep(CONF_SLEEP_TIMEMS*1000);
t += 1;
}
return 0;
}