💾 Archived View for gmi.noulin.net › gitRepositories › printfRGB › file › printfRGB.c.gmi captured on 2023-07-10 at 18:02:44. Gemini links have been rewritten to link to archived content
⬅️ Previous capture (2023-01-29)
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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 }