File: | src/usr.bin/tmux/style.c |
Warning: | line 329, column 3 Value stored to 'comma' is never read |
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1 | /* $OpenBSD: style.c,v 1.33 2023/08/17 14:10:28 nicm Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com> |
5 | * Copyright (c) 2014 Tiago Cunha <tcunha@users.sourceforge.net> |
6 | * |
7 | * Permission to use, copy, modify, and distribute this software for any |
8 | * purpose with or without fee is hereby granted, provided that the above |
9 | * copyright notice and this permission notice appear in all copies. |
10 | * |
11 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
12 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
13 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
14 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
15 | * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER |
16 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING |
17 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
18 | */ |
19 | |
20 | #include <sys/types.h> |
21 | |
22 | #include <ctype.h> |
23 | #include <stdlib.h> |
24 | #include <string.h> |
25 | |
26 | #include "tmux.h" |
27 | |
28 | /* Mask for bits not included in style. */ |
29 | #define STYLE_ATTR_MASK(~0) (~0) |
30 | |
31 | /* Default style. */ |
32 | static struct style style_default = { |
33 | { { { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0, 0 }, |
34 | 0, |
35 | |
36 | 8, |
37 | STYLE_ALIGN_DEFAULT, |
38 | STYLE_LIST_OFF, |
39 | |
40 | STYLE_RANGE_NONE, 0, "", |
41 | |
42 | STYLE_DEFAULT_BASE |
43 | }; |
44 | |
45 | /* Set range string. */ |
46 | static void |
47 | style_set_range_string(struct style *sy, const char *s) |
48 | { |
49 | strlcpy(sy->range_string, s, sizeof sy->range_string); |
50 | } |
51 | |
52 | /* |
53 | * Parse an embedded style of the form "fg=colour,bg=colour,bright,...". Note |
54 | * that this adds onto the given style, so it must have been initialized |
55 | * already. |
56 | */ |
57 | int |
58 | style_parse(struct style *sy, const struct grid_cell *base, const char *in) |
59 | { |
60 | struct style saved; |
61 | const char delimiters[] = " ,\n", *cp; |
62 | char tmp[256], *found; |
63 | int value; |
64 | size_t end; |
65 | |
66 | if (*in == '\0') |
67 | return (0); |
68 | style_copy(&saved, sy); |
69 | |
70 | log_debug("%s: %s", __func__, in); |
71 | do { |
72 | while (*in != '\0' && strchr(delimiters, *in) != NULL((void *)0)) |
73 | in++; |
74 | if (*in == '\0') |
75 | break; |
76 | |
77 | end = strcspn(in, delimiters); |
78 | if (end > (sizeof tmp) - 1) |
79 | goto error; |
80 | memcpy(tmp, in, end); |
81 | tmp[end] = '\0'; |
82 | |
83 | log_debug("%s: %s", __func__, tmp); |
84 | if (strcasecmp(tmp, "default") == 0) { |
85 | sy->gc.fg = base->fg; |
86 | sy->gc.bg = base->bg; |
87 | sy->gc.us = base->us; |
88 | sy->gc.attr = base->attr; |
89 | sy->gc.flags = base->flags; |
90 | } else if (strcasecmp(tmp, "ignore") == 0) |
91 | sy->ignore = 1; |
92 | else if (strcasecmp(tmp, "noignore") == 0) |
93 | sy->ignore = 0; |
94 | else if (strcasecmp(tmp, "push-default") == 0) |
95 | sy->default_type = STYLE_DEFAULT_PUSH; |
96 | else if (strcasecmp(tmp, "pop-default") == 0) |
97 | sy->default_type = STYLE_DEFAULT_POP; |
98 | else if (strcasecmp(tmp, "nolist") == 0) |
99 | sy->list = STYLE_LIST_OFF; |
100 | else if (strncasecmp(tmp, "list=", 5) == 0) { |
101 | if (strcasecmp(tmp + 5, "on") == 0) |
102 | sy->list = STYLE_LIST_ON; |
103 | else if (strcasecmp(tmp + 5, "focus") == 0) |
104 | sy->list = STYLE_LIST_FOCUS; |
105 | else if (strcasecmp(tmp + 5, "left-marker") == 0) |
106 | sy->list = STYLE_LIST_LEFT_MARKER; |
107 | else if (strcasecmp(tmp + 5, "right-marker") == 0) |
108 | sy->list = STYLE_LIST_RIGHT_MARKER; |
109 | else |
110 | goto error; |
111 | } else if (strcasecmp(tmp, "norange") == 0) { |
112 | sy->range_type = style_default.range_type; |
113 | sy->range_argument = style_default.range_type; |
114 | strlcpy(sy->range_string, style_default.range_string, |
115 | sizeof sy->range_string); |
116 | } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) { |
117 | found = strchr(tmp + 6, '|'); |
118 | if (found != NULL((void *)0)) { |
119 | *found++ = '\0'; |
120 | if (*found == '\0') |
121 | goto error; |
122 | } |
123 | if (strcasecmp(tmp + 6, "left") == 0) { |
124 | if (found != NULL((void *)0)) |
125 | goto error; |
126 | sy->range_type = STYLE_RANGE_LEFT; |
127 | sy->range_argument = 0; |
128 | style_set_range_string(sy, ""); |
129 | } else if (strcasecmp(tmp + 6, "right") == 0) { |
130 | if (found != NULL((void *)0)) |
131 | goto error; |
132 | sy->range_type = STYLE_RANGE_RIGHT; |
133 | sy->range_argument = 0; |
134 | style_set_range_string(sy, ""); |
135 | } else if (strcasecmp(tmp + 6, "pane") == 0) { |
136 | if (found == NULL((void *)0)) |
137 | goto error; |
138 | if (*found != '%' || found[1] == '\0') |
139 | goto error; |
140 | for (cp = found + 1; *cp != '\0'; cp++) { |
141 | if (!isdigit((u_char)*cp)) |
142 | goto error; |
143 | } |
144 | sy->range_type = STYLE_RANGE_PANE; |
145 | sy->range_argument = atoi(found + 1); |
146 | style_set_range_string(sy, ""); |
147 | } else if (strcasecmp(tmp + 6, "window") == 0) { |
148 | if (found == NULL((void *)0)) |
149 | goto error; |
150 | for (cp = found; *cp != '\0'; cp++) { |
151 | if (!isdigit((u_char)*cp)) |
152 | goto error; |
153 | } |
154 | sy->range_type = STYLE_RANGE_WINDOW; |
155 | sy->range_argument = atoi(found); |
156 | style_set_range_string(sy, ""); |
157 | } else if (strcasecmp(tmp + 6, "session") == 0) { |
158 | if (found == NULL((void *)0)) |
159 | goto error; |
160 | if (*found != '$' || found[1] == '\0') |
161 | goto error; |
162 | for (cp = found + 1; *cp != '\0'; cp++) { |
163 | if (!isdigit((u_char)*cp)) |
164 | goto error; |
165 | } |
166 | sy->range_type = STYLE_RANGE_SESSION; |
167 | sy->range_argument = atoi(found + 1); |
168 | style_set_range_string(sy, ""); |
169 | } else if (strcasecmp(tmp + 6, "user") == 0) { |
170 | if (found == NULL((void *)0)) |
171 | goto error; |
172 | sy->range_type = STYLE_RANGE_USER; |
173 | sy->range_argument = 0; |
174 | style_set_range_string(sy, found); |
175 | } |
176 | } else if (strcasecmp(tmp, "noalign") == 0) |
177 | sy->align = style_default.align; |
178 | else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) { |
179 | if (strcasecmp(tmp + 6, "left") == 0) |
180 | sy->align = STYLE_ALIGN_LEFT; |
181 | else if (strcasecmp(tmp + 6, "centre") == 0) |
182 | sy->align = STYLE_ALIGN_CENTRE; |
183 | else if (strcasecmp(tmp + 6, "right") == 0) |
184 | sy->align = STYLE_ALIGN_RIGHT; |
185 | else if (strcasecmp(tmp + 6, "absolute-centre") == 0) |
186 | sy->align = STYLE_ALIGN_ABSOLUTE_CENTRE; |
187 | else |
188 | goto error; |
189 | } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) { |
190 | if ((value = colour_fromstring(tmp + 5)) == -1) |
191 | goto error; |
192 | sy->fill = value; |
193 | } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) { |
194 | if ((value = colour_fromstring(tmp + 3)) == -1) |
195 | goto error; |
196 | if (*in == 'f' || *in == 'F') { |
197 | if (value != 8) |
198 | sy->gc.fg = value; |
199 | else |
200 | sy->gc.fg = base->fg; |
201 | } else if (*in == 'b' || *in == 'B') { |
202 | if (value != 8) |
203 | sy->gc.bg = value; |
204 | else |
205 | sy->gc.bg = base->bg; |
206 | } else |
207 | goto error; |
208 | } else if (end > 3 && strncasecmp(tmp, "us=", 3) == 0) { |
209 | if ((value = colour_fromstring(tmp + 3)) == -1) |
210 | goto error; |
211 | if (value != 8) |
212 | sy->gc.us = value; |
213 | else |
214 | sy->gc.us = base->us; |
215 | } else if (strcasecmp(tmp, "none") == 0) |
216 | sy->gc.attr = 0; |
217 | else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) { |
218 | if ((value = attributes_fromstring(tmp + 2)) == -1) |
219 | goto error; |
220 | sy->gc.attr &= ~value; |
221 | } else { |
222 | if ((value = attributes_fromstring(tmp)) == -1) |
223 | goto error; |
224 | sy->gc.attr |= value; |
225 | } |
226 | |
227 | in += end + strspn(in + end, delimiters); |
228 | } while (*in != '\0'); |
229 | |
230 | return (0); |
231 | |
232 | error: |
233 | style_copy(sy, &saved); |
234 | return (-1); |
235 | } |
236 | |
237 | /* Convert style to a string. */ |
238 | const char * |
239 | style_tostring(struct style *sy) |
240 | { |
241 | struct grid_cell *gc = &sy->gc; |
242 | int off = 0; |
243 | const char *comma = "", *tmp = ""; |
244 | static char s[256]; |
245 | char b[16]; |
246 | |
247 | *s = '\0'; |
248 | |
249 | if (sy->list != STYLE_LIST_OFF) { |
250 | if (sy->list == STYLE_LIST_ON) |
251 | tmp = "on"; |
252 | else if (sy->list == STYLE_LIST_FOCUS) |
253 | tmp = "focus"; |
254 | else if (sy->list == STYLE_LIST_LEFT_MARKER) |
255 | tmp = "left-marker"; |
256 | else if (sy->list == STYLE_LIST_RIGHT_MARKER) |
257 | tmp = "right-marker"; |
258 | off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma, |
259 | tmp); |
260 | comma = ","; |
261 | } |
262 | if (sy->range_type != STYLE_RANGE_NONE) { |
263 | if (sy->range_type == STYLE_RANGE_LEFT) |
264 | tmp = "left"; |
265 | else if (sy->range_type == STYLE_RANGE_RIGHT) |
266 | tmp = "right"; |
267 | else if (sy->range_type == STYLE_RANGE_PANE) { |
268 | snprintf(b, sizeof b, "pane|%%%u", sy->range_argument); |
269 | tmp = b; |
270 | } else if (sy->range_type == STYLE_RANGE_WINDOW) { |
271 | snprintf(b, sizeof b, "window|%u", sy->range_argument); |
272 | tmp = b; |
273 | } else if (sy->range_type == STYLE_RANGE_SESSION) { |
274 | snprintf(b, sizeof b, "session|$%u", |
275 | sy->range_argument); |
276 | tmp = b; |
277 | } else if (sy->range_type == STYLE_RANGE_USER) { |
278 | snprintf(b, sizeof b, "user|%s", sy->range_string); |
279 | tmp = b; |
280 | } |
281 | off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma, |
282 | tmp); |
283 | comma = ","; |
284 | } |
285 | if (sy->align != STYLE_ALIGN_DEFAULT) { |
286 | if (sy->align == STYLE_ALIGN_LEFT) |
287 | tmp = "left"; |
288 | else if (sy->align == STYLE_ALIGN_CENTRE) |
289 | tmp = "centre"; |
290 | else if (sy->align == STYLE_ALIGN_RIGHT) |
291 | tmp = "right"; |
292 | else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE) |
293 | tmp = "absolute-centre"; |
294 | off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma, |
295 | tmp); |
296 | comma = ","; |
297 | } |
298 | if (sy->default_type != STYLE_DEFAULT_BASE) { |
299 | if (sy->default_type == STYLE_DEFAULT_PUSH) |
300 | tmp = "push-default"; |
301 | else if (sy->default_type == STYLE_DEFAULT_POP) |
302 | tmp = "pop-default"; |
303 | off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp); |
304 | comma = ","; |
305 | } |
306 | if (sy->fill != 8) { |
307 | off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma, |
308 | colour_tostring(sy->fill)); |
309 | comma = ","; |
310 | } |
311 | if (gc->fg != 8) { |
312 | off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma, |
313 | colour_tostring(gc->fg)); |
314 | comma = ","; |
315 | } |
316 | if (gc->bg != 8) { |
317 | off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma, |
318 | colour_tostring(gc->bg)); |
319 | comma = ","; |
320 | } |
321 | if (gc->us != 8) { |
322 | off += xsnprintf(s + off, sizeof s - off, "%sus=%s", comma, |
323 | colour_tostring(gc->us)); |
324 | comma = ","; |
325 | } |
326 | if (gc->attr != 0) { |
327 | xsnprintf(s + off, sizeof s - off, "%s%s", comma, |
328 | attributes_tostring(gc->attr)); |
329 | comma = ","; |
Value stored to 'comma' is never read | |
330 | } |
331 | |
332 | if (*s == '\0') |
333 | return ("default"); |
334 | return (s); |
335 | } |
336 | |
337 | /* Apply a style on top of the given style. */ |
338 | void |
339 | style_add(struct grid_cell *gc, struct options *oo, const char *name, |
340 | struct format_tree *ft) |
341 | { |
342 | struct style *sy; |
343 | struct format_tree *ft0 = NULL((void *)0); |
344 | |
345 | if (ft == NULL((void *)0)) |
346 | ft = ft0 = format_create(NULL((void *)0), NULL((void *)0), 0, FORMAT_NOJOBS0x4); |
347 | |
348 | sy = options_string_to_style(oo, name, ft); |
349 | if (sy == NULL((void *)0)) |
350 | sy = &style_default; |
351 | if (sy->gc.fg != 8) |
352 | gc->fg = sy->gc.fg; |
353 | if (sy->gc.bg != 8) |
354 | gc->bg = sy->gc.bg; |
355 | if (sy->gc.us != 8) |
356 | gc->us = sy->gc.us; |
357 | gc->attr |= sy->gc.attr; |
358 | |
359 | if (ft0 != NULL((void *)0)) |
360 | format_free(ft0); |
361 | } |
362 | |
363 | /* Apply a style on top of the default style. */ |
364 | void |
365 | style_apply(struct grid_cell *gc, struct options *oo, const char *name, |
366 | struct format_tree *ft) |
367 | { |
368 | memcpy(gc, &grid_default_cell, sizeof *gc); |
369 | style_add(gc, oo, name, ft); |
370 | } |
371 | |
372 | /* Initialize style from cell. */ |
373 | void |
374 | style_set(struct style *sy, const struct grid_cell *gc) |
375 | { |
376 | memcpy(sy, &style_default, sizeof *sy); |
377 | memcpy(&sy->gc, gc, sizeof sy->gc); |
378 | } |
379 | |
380 | /* Copy style. */ |
381 | void |
382 | style_copy(struct style *dst, struct style *src) |
383 | { |
384 | memcpy(dst, src, sizeof *dst); |
385 | } |