-
Notifications
You must be signed in to change notification settings - Fork 9
/
console.c
313 lines (284 loc) · 10.2 KB
/
console.c
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
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
/*
$Id: console.c 3086 2023-09-03 06:23:08Z soci $
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "console.h"
#ifdef COLOR_OUTPUT
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
#define ENABLE_VIRTUAL_TERMINAL_PROCESSING 4
#endif
#else
#include <unistd.h>
#endif
bool console_use_color = false;
bool console_use_bold = false;
struct console_info_s {
bool known;
bool color;
#ifdef _WIN32
bool use_ansi;
int attributes;
HANDLE handle;
DWORD mode;
#endif
};
static struct console_info_s console_stdout, console_stderr;
static const struct console_info_s console_file = {
#ifdef _WIN32
true, false, false, 0, INVALID_HANDLE_VALUE, 0
#else
true, false
#endif
};
#ifdef _WIN32
static bool use_ansi;
static int old_attributes, current_attributes;
static HANDLE console_handle = INVALID_HANDLE_VALUE;
static DWORD console_mode;
#endif
enum terminal_e {
TERMINAL_UNKNOWN, TERMINAL_OK, TERMINAL_DUMB
};
static enum terminal_e terminal = TERMINAL_UNKNOWN;
static bool terminal_detect(void) {
if (terminal == TERMINAL_UNKNOWN) {
char const *term = getenv("TERM");
terminal = (term != NULL && strcmp(term, "dumb") != 0) ? TERMINAL_OK : TERMINAL_DUMB;
}
return terminal == TERMINAL_OK;
}
static bool console_known(FILE *f) {
const struct console_info_s *console;
if (f == stderr) {
console = &console_stderr;
} else if (f == stdout) {
console = &console_stdout;
} else {
console = &console_file;
}
if (console->known) {
console_use_color = console->color;
#ifdef _WIN32
use_ansi = console->use_ansi;
old_attributes = current_attributes = console->attributes;
console_handle = console->handle;
console_mode = console->mode;
#endif
return true;
}
return false;
}
static void console_remember(FILE *f) {
struct console_info_s *console;
if (f == stderr) {
console = &console_stderr;
} else {
console = &console_stdout;
}
console->color = console_use_color;
#ifdef _WIN32
console->use_ansi = use_ansi;
console->attributes = old_attributes;
console->handle = console_handle;
console->mode = console_mode;
#endif
console->known = true;
}
#ifdef _WIN32
static UINT old_consoleoutputcp;
static UINT old_consolecp;
void console_init(unsigned int ansicp) {
UINT consoleoutputcp = GetConsoleOutputCP();
UINT consolecp = GetConsoleCP();
old_consoleoutputcp = 0;
old_consolecp = 0;
if (consolecp != ansicp) {
if (SetConsoleCP(ansicp)) old_consolecp = consolecp;
}
if (consoleoutputcp != ansicp) {
if (SetConsoleOutputCP(ansicp)) old_consoleoutputcp = consoleoutputcp;
}
console_stdout.known = false;
console_stderr.known = false;
}
static void console_destroy2(const struct console_info_s *console) {
if (!console->known) return;
if (console->handle == INVALID_HANDLE_VALUE) return;
if (console->attributes >= 0) {
SetConsoleTextAttribute(console->handle, (WORD)console->attributes);
}
if ((console->mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING) != 0) {
SetConsoleMode(console->handle, console->mode ^ ENABLE_VIRTUAL_TERMINAL_PROCESSING);
}
}
void console_destroy(void) {
if (old_consolecp != 0) SetConsoleCP(old_consolecp);
if (old_consoleoutputcp != 0) SetConsoleOutputCP(old_consoleoutputcp);
console_destroy2(&console_stdout);
console_destroy2(&console_stderr);
}
static bool is_pty_name(const WCHAR *name, DWORD len) {
DWORD i;
int s = 0;
len /= 2;
for (i = 0; i < len; i++) {
wchar_t c = name[i];
switch (s) {
case 0: case 1: case 2: case 3: s = (c == L"-pty"[s]) ? s + 1 : 0; break;
case 4: s = (c >= L'0' && c <= L'9') ? s + 1 : 0; break;
case 5: if (c < L'0' || c > L'9') s = (c == L'-') ? s + 1 : 0; break;
default: if (c == L'\\') s = 0; break;
}
}
return s == 6;
}
static bool is_pipe_pty1(HANDLE *handle) {
typedef enum eFILE_INFO_BY_HANDLE_CLASS { eFileNameInfo = 2 } eFILE_INFO_BY_HANDLE_CLASS;
typedef BOOL (WINAPI *lpGetFileInformationByHandleEx)(HANDLE, eFILE_INFO_BY_HANDLE_CLASS, LPVOID, DWORD);
static lpGetFileInformationByHandleEx fnGetFileInformationByHandleEx;
static bool unavailable;
if (unavailable) {
return false;
}
if (fnGetFileInformationByHandleEx == NULL) {
HMODULE mhandle = GetModuleHandle("kernel32.dll");
if (mhandle != NULL) {
fnGetFileInformationByHandleEx = (lpGetFileInformationByHandleEx)GetProcAddress(mhandle, "GetFileInformationByHandleEx");
}
}
if (fnGetFileInformationByHandleEx != NULL) {
struct { DWORD length; WCHAR name[200]; } fni;
if (fnGetFileInformationByHandleEx(handle, eFileNameInfo, &fni, sizeof fni) != 0) {
return is_pty_name(fni.name, fni.length);
}
} else unavailable = true;
return false;
}
static bool is_pipe_pty2(HANDLE *handle) {
typedef enum eOBJECT_INFORMATION_CLASS { eObjectNameInformation = 1 } eOBJECT_INFORMATION_CLASS;
typedef LONG (NTAPI *lpNtQueryObject)(HANDLE, eOBJECT_INFORMATION_CLASS, PVOID, ULONG, PULONG);
static lpNtQueryObject fnNtQueryObject;
static bool unavailable;
if (unavailable) {
return false;
}
if (fnNtQueryObject == NULL) {
HANDLE mhandle = GetModuleHandle("ntdll.dll");
if (mhandle != NULL) {
fnNtQueryObject = (lpNtQueryObject)GetProcAddress(mhandle, "NtQueryObject");
}
}
if (fnNtQueryObject != NULL) {
DWORD len;
struct { USHORT Length; USHORT MaximumLength; PWSTR Buffer; WCHAR pad[200]; } oni;
if (fnNtQueryObject(handle, eObjectNameInformation, &oni, sizeof oni, &len) == 0) {
return is_pty_name(oni.Buffer, oni.Length);
}
} else unavailable = true;
return false;
}
static bool console_detect(FILE *f) {
DWORD mode;
CONSOLE_SCREEN_BUFFER_INFO console_info;
use_ansi = false;
old_attributes = current_attributes = -1;
console_handle = INVALID_HANDLE_VALUE;
console_mode = 0;
console_handle = GetStdHandle(f == stderr ? STD_ERROR_HANDLE : STD_OUTPUT_HANDLE);
if (console_handle == INVALID_HANDLE_VALUE) {
return false;
}
mode = 0;
if (GetConsoleMode(console_handle, &mode) == 0) {
if (GetFileType(console_handle) == FILE_TYPE_PIPE) {
if (is_pipe_pty1(console_handle) || is_pipe_pty2(console_handle)) {
use_ansi = true;
return true;
}
}
return false;
}
if ((mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING) == 0) {
if (SetConsoleMode(console_handle, mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING) != 0) {
console_mode = mode | ENABLE_VIRTUAL_TERMINAL_PROCESSING;
mode = 0;
if (GetConsoleMode(console_handle, &mode) == 0) mode = 0;
}
}
if ((mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING) != 0) {
use_ansi = true;
return true;
}
use_ansi = terminal_detect();
if (use_ansi) {
return true;
}
if (GetConsoleScreenBufferInfo(console_handle, &console_info)) {
old_attributes = current_attributes = console_info.wAttributes;
return true;
}
return false;
}
void console_use(FILE *f) {
if (console_known(f)) return;
console_use_color = console_detect(f);
console_remember(f);
}
static const char *const ansi_sequences[8] = {
"\33[1m", "\33[0;1m", "\33[7m", "\33[m", "\33[36m", "\33[31m", "\33[1;32m",
"\33[35m"
};
void console_attribute(int c, FILE *f) {
if (use_ansi) {
fputs(ansi_sequences[c], f);
return;
}
if (console_handle == INVALID_HANDLE_VALUE) {
return;
}
if (fflush(f) != 0) setvbuf(f, NULL, _IOLBF, 1024);
switch (c) {
case 0: current_attributes |= FOREGROUND_INTENSITY; break;
case 1: current_attributes = old_attributes | FOREGROUND_INTENSITY; break;
case 2:
if (!(current_attributes & FOREGROUND_BLUE) != !(current_attributes & BACKGROUND_BLUE)) current_attributes ^= FOREGROUND_BLUE | BACKGROUND_BLUE;
if (!(current_attributes & FOREGROUND_GREEN) != !(current_attributes & BACKGROUND_GREEN)) current_attributes ^= FOREGROUND_GREEN | BACKGROUND_GREEN;
if (!(current_attributes & FOREGROUND_RED) != !(current_attributes & BACKGROUND_RED)) current_attributes ^= FOREGROUND_RED | BACKGROUND_RED;
if (!(current_attributes & FOREGROUND_INTENSITY) != !(current_attributes & BACKGROUND_INTENSITY)) current_attributes ^= FOREGROUND_INTENSITY | BACKGROUND_INTENSITY;
break;
case 3: current_attributes = old_attributes; break;
case 4: current_attributes = FOREGROUND_GREEN | FOREGROUND_BLUE | (current_attributes & ~FOREGROUND_RED); break;
case 5: current_attributes = FOREGROUND_RED | (current_attributes & ~(FOREGROUND_BLUE | FOREGROUND_GREEN)); break;
case 6: current_attributes = FOREGROUND_GREEN | FOREGROUND_INTENSITY | (current_attributes & ~(FOREGROUND_BLUE | FOREGROUND_RED)); break;
case 7: current_attributes = FOREGROUND_RED | FOREGROUND_BLUE | (current_attributes & ~FOREGROUND_GREEN); break;
default: break;
}
SetConsoleTextAttribute(console_handle, (WORD)current_attributes);
}
#else
void console_init(void) {
console_stdout.known = false;
console_stderr.known = false;
}
void console_use(FILE *f) {
if (console_known(f)) return;
console_use_color = terminal_detect() && isatty(f == stderr ? STDERR_FILENO : STDOUT_FILENO) == 1;
console_remember(f);
}
#endif
#endif