printfRGB.c (1301B)
1 #include <inttypes.h> 2 #include <stdio.h> 3 #include <printf.h> 4 5 #define TERMRGB "\x1b[38;2;" 6 #define BGTERMRGB "\x1b[48;2;" 7 8 int print_k(FILE *stream, const struct printf_info *info, const void *const *args) { 9 uint32_t rgbColor = *((uint32_t*) args[0]); 10 char b[20]; 11 size_t len; 12 13 snprintf(b, sizeof(b), TERMRGB "%d;%d;%dm", rgbColor>>16, (rgbColor&0xFF00)>>8, rgbColor&0xFF); 14 15 /* Pad to the minimum field width and print to the stream. */ 16 len = fprintf(stream, "%*s", (info->left ? -info->width : info->width), b); 17 return len; 18 } 19 20 int print_K(FILE *stream, const struct printf_info *info, const void *const *args) { 21 uint32_t rgbColor = *((uint32_t*) args[0]); 22 char b[20]; 23 size_t len; 24 25 snprintf(b, sizeof(b), BGTERMRGB "%d;%d;%dm", rgbColor>>16, (rgbColor&0xFF00)>>8, rgbColor&0xFF); 26 27 /* Pad to the minimum field width and print to the stream. */ 28 len = fprintf(stream, "%*s", (info->left ? -info->width : info->width), b); 29 return len; 30 } 31 32 33 int print_k_arginfo(const struct printf_info *info, size_t n, int *argtypes, int* size) { 34 if (n > 0) { 35 argtypes[0] = PA_POINTER; 36 size[0] = sizeof(uint32_t); 37 } 38 return 1; 39 } 40 41 void initPrintfRBG(void) { 42 register_printf_specifier('k', print_k, print_k_arginfo); 43 register_printf_specifier('K', print_K, print_k_arginfo); 44 }