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
|
#include <stdio.h>
#include <unistd.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdbool.h>
#include <getopt.h>
void usage(void) {
printf("Usage: palette palfile\n");
exit(1);
}
void print_rgb(uint16_t word) {
int r, g, b;
r = word & 0x1f;
g = (word >> 5) & 0x1f;
b = (word >> 10) & 0x1f;
printf("\tRGB %2d, %2d, %2d\n", r, g, b);
}
void print_pokemon_palette(char* palette_filename) {
FILE* f;
uint8_t bytes[4];
f = fopen(palette_filename, "rb");
if (f == NULL) {
fprintf(stderr, "failed to open file %s\n", palette_filename);
exit(1);
}
fseek(f, 2, SEEK_SET);
size_t size = 4;
if (size != fread(bytes, 1, size, f)) {
fprintf(stderr, "failed to read file %s\n", palette_filename);
exit(1);
}
fclose(f);
print_rgb((bytes[1] << 8) | bytes[0]);
print_rgb((bytes[3] << 8) | bytes[2]);
}
void print_palette(char* palette_filename) {
FILE* f;
uint8_t* bytes;
size_t size;
int i;
f = fopen(palette_filename, "rb");
if (f == NULL) {
fprintf(stderr, "failed to open file %s\n", palette_filename);
exit(1);
}
fseek(f, 0, SEEK_END);
size = ftell(f);
if (!size) {
fprintf(stderr, "empty file %s\n", palette_filename);
exit(1);
}
rewind(f);
bytes = malloc(size);
if (!bytes) {
fprintf(stderr, "malloc failure\n");
exit(1);
}
fseek(f, 0, SEEK_SET);
if (size != fread(bytes, 1, size, f)) {
fprintf(stderr, "failed to read file %s\n", palette_filename);
exit(1);
}
fclose(f);
for (i = 0; i + 1 < (int)size; i += 2) {
print_rgb((bytes[i + 1] << 8) | bytes[i]);
}
}
int main(int argc, char* argv[]) {
int ch;
bool pokemon = false;
while ((ch = getopt(argc, argv, "p")) != -1) {
switch (ch) {
case 'p':
pokemon = true;
break;
default:
usage();
}
}
argc -= optind;
argv += optind;
if (argc < 1) {
usage();
}
if (pokemon) {
print_pokemon_palette(argv[0]);
} else {
print_palette(argv[0]);
}
return 0;
}
|
