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
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <syslog.h>
#include <sys/types.h>
#include "macro.h"
#include "time-util.h"
/* Regular colors */
#define ANSI_BLACK "\x1B[0;30m" /* Some type of grey usually. */
#define ANSI_RED "\x1B[0;31m"
#define ANSI_GREEN "\x1B[0;32m"
#define ANSI_YELLOW "\x1B[0;33m"
#define ANSI_BLUE "\x1B[0;34m"
#define ANSI_MAGENTA "\x1B[0;35m"
#define ANSI_CYAN "\x1B[0;36m"
#define ANSI_WHITE "\x1B[0;37m" /* This is actually rendered as light grey, legible even on a white
* background. See ANSI_HIGHLIGHT_WHITE for real white. */
#define ANSI_BRIGHT_BLACK "\x1B[0;90m"
#define ANSI_BRIGHT_RED "\x1B[0;91m"
#define ANSI_BRIGHT_GREEN "\x1B[0;92m"
#define ANSI_BRIGHT_YELLOW "\x1B[0;93m"
#define ANSI_BRIGHT_BLUE "\x1B[0;94m"
#define ANSI_BRIGHT_MAGENTA "\x1B[0;95m"
#define ANSI_BRIGHT_CYAN "\x1B[0;96m"
#define ANSI_BRIGHT_WHITE "\x1B[0;97m"
#define ANSI_GREY "\x1B[0;38;5;245m"
/* Bold/highlighted */
#define ANSI_HIGHLIGHT_BLACK "\x1B[0;1;30m"
#define ANSI_HIGHLIGHT_RED "\x1B[0;1;31m"
#define ANSI_HIGHLIGHT_GREEN "\x1B[0;1;32m"
#define _ANSI_HIGHLIGHT_YELLOW "\x1B[0;1;33m" /* This yellow is currently not displayed well by some terminals */
#define ANSI_HIGHLIGHT_BLUE "\x1B[0;1;34m"
#define ANSI_HIGHLIGHT_MAGENTA "\x1B[0;1;35m"
#define ANSI_HIGHLIGHT_CYAN "\x1B[0;1;36m"
#define ANSI_HIGHLIGHT_WHITE "\x1B[0;1;37m"
#define ANSI_HIGHLIGHT_YELLOW4 "\x1B[0;1;38;5;100m"
#define ANSI_HIGHLIGHT_KHAKI3 "\x1B[0;1;38;5;185m"
#define ANSI_HIGHLIGHT_GREY "\x1B[0;1;38;5;245m"
#define ANSI_HIGHLIGHT_YELLOW ANSI_HIGHLIGHT_KHAKI3 /* Replacement yellow that is more legible */
/* Underlined */
#define ANSI_GREY_UNDERLINE "\x1B[0;4;38;5;245m"
#define ANSI_BRIGHT_BLACK_UNDERLINE "\x1B[0;4;90m"
#define ANSI_HIGHLIGHT_RED_UNDERLINE "\x1B[0;1;4;31m"
#define ANSI_HIGHLIGHT_GREEN_UNDERLINE "\x1B[0;1;4;32m"
#define ANSI_HIGHLIGHT_YELLOW_UNDERLINE "\x1B[0;1;4;38;5;185m"
#define ANSI_HIGHLIGHT_BLUE_UNDERLINE "\x1B[0;1;4;34m"
#define ANSI_HIGHLIGHT_MAGENTA_UNDERLINE "\x1B[0;1;4;35m"
#define ANSI_HIGHLIGHT_GREY_UNDERLINE "\x1B[0;1;4;38;5;245m"
/* Other ANSI codes */
#define ANSI_UNDERLINE "\x1B[0;4m"
#define ANSI_HIGHLIGHT "\x1B[0;1;39m"
#define ANSI_HIGHLIGHT_UNDERLINE "\x1B[0;1;4m"
/* Fallback colors: 256 -> 16 */
#define ANSI_HIGHLIGHT_GREY_FALLBACK "\x1B[0;1;90m"
#define ANSI_HIGHLIGHT_GREY_FALLBACK_UNDERLINE "\x1B[0;1;4;90m"
#define ANSI_HIGHLIGHT_YELLOW_FALLBACK "\x1B[0;1;33m"
#define ANSI_HIGHLIGHT_YELLOW_FALLBACK_UNDERLINE "\x1B[0;1;4;33m"
/* Background colors */
#define ANSI_BACKGROUND_BLUE "\x1B[44m"
/* Reset/clear ANSI styles */
#define ANSI_NORMAL "\x1B[0m"
/* Erase characters until the end of the line */
#define ANSI_ERASE_TO_END_OF_LINE "\x1B[K"
/* Move cursor up one line */
#define ANSI_REVERSE_LINEFEED "\x1BM"
/* Set cursor to top left corner and clear screen */
#define ANSI_HOME_CLEAR "\x1B[H\x1B[2J"
int reset_terminal_fd(int fd, bool switch_to_text);
int reset_terminal(const char *name);
int set_terminal_cursor_position(int fd, unsigned int row, unsigned int column);
int open_terminal(const char *name, int mode);
/* Flags for tweaking the way we become the controlling process of a terminal. */
typedef enum AcquireTerminalFlags {
/* Try to become the controlling process of the TTY. If we can't return -EPERM. */
ACQUIRE_TERMINAL_TRY = 0,
/* Tell the kernel to forcibly make us the controlling process of the TTY. Returns -EPERM if the kernel doesn't allow that. */
ACQUIRE_TERMINAL_FORCE = 1,
/* If we can't become the controlling process of the TTY right-away, then wait until we can. */
ACQUIRE_TERMINAL_WAIT = 2,
/* Pick one of the above, and then OR this flag in, in order to request permissive behaviour, if we can't become controlling process then don't mind */
ACQUIRE_TERMINAL_PERMISSIVE = 1 << 2,
} AcquireTerminalFlags;
/* Limits the use of ANSI colors to a subset. */
typedef enum ColorMode {
/* No colors, monochrome output. */
COLOR_OFF,
/* All colors, no restrictions. */
COLOR_ON,
/* Only the base 16 colors. */
COLOR_16,
/* Only 256 colors. */
COLOR_256,
/* For truecolor or 24bit color support. */
COLOR_24BIT,
_COLOR_INVALID = -EINVAL,
} ColorMode;
int acquire_terminal(const char *name, AcquireTerminalFlags flags, usec_t timeout);
int release_terminal(void);
int terminal_vhangup_fd(int fd);
int terminal_vhangup(const char *name);
int terminal_set_size_fd(int fd, const char *ident, unsigned rows, unsigned cols);
int proc_cmdline_tty_size(const char *tty, unsigned *ret_rows, unsigned *ret_cols);
int chvt(int vt);
int read_one_char(FILE *f, char *ret, usec_t timeout, bool *need_nl);
int ask_char(char *ret, const char *replies, const char *text, ...) _printf_(3, 4);
int ask_string(char **ret, const char *text, ...) _printf_(2, 3);
int vt_disallocate(const char *name);
int resolve_dev_console(char **ret);
int get_kernel_consoles(char ***ret);
bool tty_is_vc(const char *tty);
bool tty_is_vc_resolve(const char *tty);
bool tty_is_console(const char *tty) _pure_;
int vtnr_from_tty(const char *tty);
const char *default_term_for_tty(const char *tty);
int make_console_stdio(void);
int fd_columns(int fd);
unsigned columns(void);
int fd_lines(int fd);
unsigned lines(void);
void columns_lines_cache_reset(int _unused_ signum);
void reset_terminal_feature_caches(void);
bool on_tty(void);
bool getenv_terminal_is_dumb(void);
bool terminal_is_dumb(void);
ColorMode get_color_mode(void);
bool underline_enabled(void);
bool dev_console_colors_enabled(void);
static inline bool colors_enabled(void) {
/* Returns true if colors are considered supported on our stdout. */
return get_color_mode() != COLOR_OFF;
}
#define DEFINE_ANSI_FUNC(name, NAME) \
static inline const char *ansi_##name(void) { \
return colors_enabled() ? ANSI_##NAME : ""; \
}
#define DEFINE_ANSI_FUNC_256(name, NAME, FALLBACK) \
static inline const char *ansi_##name(void) { \
switch (get_color_mode()) { \
case COLOR_OFF: return ""; \
case COLOR_16: return ANSI_##FALLBACK; \
default : return ANSI_##NAME; \
} \
}
static inline const char *ansi_underline(void) {
return underline_enabled() ? ANSI_UNDERLINE : "";
}
#define DEFINE_ANSI_FUNC_UNDERLINE(name, NAME) \
static inline const char *ansi_##name(void) { \
return underline_enabled() ? ANSI_##NAME##_UNDERLINE : \
colors_enabled() ? ANSI_##NAME : ""; \
}
#define DEFINE_ANSI_FUNC_UNDERLINE_256(name, NAME, FALLBACK) \
static inline const char *ansi_##name(void) { \
switch (get_color_mode()) { \
case COLOR_OFF: return ""; \
case COLOR_16: return underline_enabled() ? ANSI_##FALLBACK##_UNDERLINE : ANSI_##FALLBACK; \
default : return underline_enabled() ? ANSI_##NAME##_UNDERLINE: ANSI_##NAME; \
} \
}
DEFINE_ANSI_FUNC(normal, NORMAL);
DEFINE_ANSI_FUNC(highlight, HIGHLIGHT);
DEFINE_ANSI_FUNC(black, BLACK);
DEFINE_ANSI_FUNC(red, RED);
DEFINE_ANSI_FUNC(green, GREEN);
DEFINE_ANSI_FUNC(yellow, YELLOW);
DEFINE_ANSI_FUNC(blue, BLUE);
DEFINE_ANSI_FUNC(magenta, MAGENTA);
DEFINE_ANSI_FUNC(cyan, CYAN);
DEFINE_ANSI_FUNC(white, WHITE);
DEFINE_ANSI_FUNC_256(grey, GREY, BRIGHT_BLACK);
DEFINE_ANSI_FUNC(bright_black, BRIGHT_BLACK);
DEFINE_ANSI_FUNC(bright_red, BRIGHT_RED);
DEFINE_ANSI_FUNC(bright_green, BRIGHT_GREEN);
DEFINE_ANSI_FUNC(bright_yellow, BRIGHT_YELLOW);
DEFINE_ANSI_FUNC(bright_blue, BRIGHT_BLUE);
DEFINE_ANSI_FUNC(bright_magenta, BRIGHT_MAGENTA);
DEFINE_ANSI_FUNC(bright_cyan, BRIGHT_CYAN);
DEFINE_ANSI_FUNC(bright_white, BRIGHT_WHITE);
DEFINE_ANSI_FUNC(highlight_black, HIGHLIGHT_BLACK);
DEFINE_ANSI_FUNC(highlight_red, HIGHLIGHT_RED);
DEFINE_ANSI_FUNC(highlight_green, HIGHLIGHT_GREEN);
DEFINE_ANSI_FUNC_256(highlight_yellow, HIGHLIGHT_YELLOW, HIGHLIGHT_YELLOW_FALLBACK);
DEFINE_ANSI_FUNC_256(highlight_yellow4, HIGHLIGHT_YELLOW4, HIGHLIGHT_YELLOW_FALLBACK);
DEFINE_ANSI_FUNC(highlight_blue, HIGHLIGHT_BLUE);
DEFINE_ANSI_FUNC(highlight_magenta, HIGHLIGHT_MAGENTA);
DEFINE_ANSI_FUNC(highlight_cyan, HIGHLIGHT_CYAN);
DEFINE_ANSI_FUNC_256(highlight_grey, HIGHLIGHT_GREY, HIGHLIGHT_GREY_FALLBACK);
DEFINE_ANSI_FUNC(highlight_white, HIGHLIGHT_WHITE);
static inline const char* _ansi_highlight_yellow(void) {
return colors_enabled() ? _ANSI_HIGHLIGHT_YELLOW : "";
}
DEFINE_ANSI_FUNC_UNDERLINE(highlight_underline, HIGHLIGHT);
DEFINE_ANSI_FUNC_UNDERLINE_256(grey_underline, GREY, BRIGHT_BLACK);
DEFINE_ANSI_FUNC_UNDERLINE(highlight_red_underline, HIGHLIGHT_RED);
DEFINE_ANSI_FUNC_UNDERLINE(highlight_green_underline, HIGHLIGHT_GREEN);
DEFINE_ANSI_FUNC_UNDERLINE_256(highlight_yellow_underline, HIGHLIGHT_YELLOW, HIGHLIGHT_YELLOW_FALLBACK);
DEFINE_ANSI_FUNC_UNDERLINE(highlight_blue_underline, HIGHLIGHT_BLUE);
DEFINE_ANSI_FUNC_UNDERLINE(highlight_magenta_underline, HIGHLIGHT_MAGENTA);
DEFINE_ANSI_FUNC_UNDERLINE_256(highlight_grey_underline, HIGHLIGHT_GREY, HIGHLIGHT_GREY_FALLBACK);
int get_ctty_devnr(pid_t pid, dev_t *d);
int get_ctty(pid_t, dev_t *_devnr, char **r);
int getttyname_malloc(int fd, char **r);
int getttyname_harder(int fd, char **r);
int ptsname_malloc(int fd, char **ret);
int openpt_allocate(int flags, char **ret_slave);
int openpt_allocate_in_namespace(pid_t pid, int flags, char **ret_slave);
int open_terminal_in_namespace(pid_t pid, const char *name, int mode);
int vt_default_utf8(void);
int vt_reset_keyboard(int fd);
int vt_restore(int fd);
int vt_release(int fd, bool restore_vt);
void get_log_colors(int priority, const char **on, const char **off, const char **highlight);
static inline const char* ansi_highlight_green_red(bool b) {
return b ? ansi_highlight_green() : ansi_highlight_red();
}
/* This assumes there is a 'tty' group */
#define TTY_MODE 0620
|
