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
|
#include <escpos/parser.h>
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <err.h>
static FILE*
fopen_or_die(const char *path, const char *mode)
{
assert(path && mode);
FILE *f;
if (!(f = fopen(path, mode)))
err(EXIT_FAILURE, "fopen(%s, %s)", path, mode);
return f;
}
struct parser {
struct escpos_parser parser;
FILE *input, *output;
};
#define container_of(ptr, type, member) ((type *)((char *)(1 ? (ptr) : &((type *)0)->member) - offsetof(type, member)))
size_t
escpos_read(const struct escpos_parser *parser, void *ptr, const size_t size)
{
assert(parser && ptr);
const struct parser *p = container_of(parser, struct parser, parser);
return fread(ptr, 1, size, p->input);
}
void
escpos_write(const struct escpos_parser *parser, const uint8_t *ptr, const size_t w, const size_t h)
{
assert(parser && ptr);
const struct parser *p = container_of(parser, struct parser, parser);
const uint8_t header[] = { 'P', '4', '\n' };
fwrite(header, 1, sizeof(header), p->output);
fprintf(p->output, "%zu\n", w);
fprintf(p->output, "%zu\n", h);
for (size_t y = 0; y < h; ++y) {
for (size_t x = 0; x < w; x += 8) {
uint8_t p8 = 255;
for (uint8_t b = 0; b < 8 && x + b < w; ++b)
p8 ^= (-(!!ptr[y * w + x + b]) ^ p8) & (1 << (7 - b));
fwrite(&p8, 1, 1, p->output);
}
}
}
int
main(int argc, char *argv[])
{
XXX
{
#define CANVAS_W 300 * 2
#define CANVAS_H 1024
char window[4096], var[256];
uint8_t canvas_data[CANVAS_W * CANVAS_H], print_buffer[CANVAS_W * ESCPOS_PRINT_BUFFER_MAX_HEIGHT];
struct parser p = {
.parser = {
.read = escpos_read,
.write = escpos_write,
.canvas = { .data = canvas_data, .w = CANVAS_W, .h = CANVAS_H },
.print_buffer = { .data = print_buffer, .w = CANVAS_W, .h = ESCPOS_PRINT_BUFFER_MAX_HEIGHT },
.window = { .data = window, .len = sizeof(window) },
.var = { .data = var, .len = sizeof(var) },
},
.input = (argc >= 2 ? fopen_or_die(argv[1], "rb") : stdin),
.output = (argc >= 3 ? fopen_or_die(argv[2], "wb") : stdout),
};
if (!escpos_parser_parse(&p.parser, (argc >= 2 ? argv[1] : "stdin")))
exit(EXIT_FAILURE);
fclose(p.input);
fclose(p.output);
}
return EXIT_SUCCESS;
}
|
