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
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <ctype.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <unistd.h>
static bool color_mode(FILE *file)
{
static int mode = -1;
const char *var;
if (mode != -1)
return mode;
var = getenv("WG_COLOR_MODE");
if (var && !strcmp(var, "always"))
mode = true;
else if (var && !strcmp(var, "never"))
mode = false;
else
return isatty(fileno(file));
return mode;
}
static void filter_ansi(FILE *file, const char *fmt, va_list args)
{
char *str = NULL;
size_t len, i, j;
if (color_mode(file)) {
vfprintf(file, fmt, args);
return;
}
len = vasprintf(&str, fmt, args);
if (len >= 2) {
for (i = 0; i < len - 2; ++i) {
if (str[i] == '\x1b' && str[i + 1] == '[') {
str[i] = str[i + 1] = '\0';
for (j = i + 2; j < len; ++j) {
if (isalpha(str[j]))
break;
str[j] = '\0';
}
str[j] = '\0';
}
}
}
for (i = 0; i < len; i = j) {
fputs(&str[i], file);
for (j = i + strlen(&str[i]); j < len; ++j) {
if (str[j] != '\0')
break;
}
}
free(str);
}
void terminal_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
filter_ansi(stdout, fmt, args);
va_end(args);
}
void terminal_fprintf(FILE *file, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
filter_ansi(file, fmt, args);
va_end(args);
}
|
