1/* $OpenBSD$ */
2
3/*
4 * Copyright (c) 2007 Nicholas Marriott <[email protected]>
5 * Copyright (c) 2014 Tiago Cunha <[email protected]>
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 (~GRID_ATTR_CHARSET)
30
31/* Default style. */
32static struct style style_default = {
33 { { { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0 },
34
35 8,
36 STYLE_ALIGN_DEFAULT,
37 STYLE_LIST_OFF,
38
39 STYLE_RANGE_NONE, 0,
40
41 STYLE_DEFAULT_BASE
42};
43
44/*
45 * Parse an embedded style of the form "fg=colour,bg=colour,bright,...". Note
46 * that this adds onto the given style, so it must have been initialized
47 * already.
48 */
49int
50style_parse(struct style *sy, const struct grid_cell *base, const char *in)
51{
52 struct style saved;
53 const char delimiters[] = " ,", *cp;
54 char tmp[256], *found;
55 int value;
56 size_t end;
57
58 if (*in == '\0')
59 return (0);
60 style_copy(&saved, sy);
61
62 do {
63 while (*in != '\0' && strchr(delimiters, *in) != NULL)
64 in++;
65 if (*in == '\0')
66 break;
67
68 end = strcspn(in, delimiters);
69 if (end > (sizeof tmp) - 1)
70 goto error;
71 memcpy(tmp, in, end);
72 tmp[end] = '\0';
73
74 if (strcasecmp(tmp, "default") == 0) {
75 sy->gc.fg = base->fg;
76 sy->gc.bg = base->bg;
77 sy->gc.attr = base->attr;
78 sy->gc.flags = base->flags;
79 } else if (strcasecmp(tmp, "push-default") == 0)
80 sy->default_type = STYLE_DEFAULT_PUSH;
81 else if (strcasecmp(tmp, "pop-default") == 0)
82 sy->default_type = STYLE_DEFAULT_POP;
83 else if (strcasecmp(tmp, "nolist") == 0)
84 sy->list = STYLE_LIST_OFF;
85 else if (strncasecmp(tmp, "list=", 5) == 0) {
86 if (strcasecmp(tmp + 5, "on") == 0)
87 sy->list = STYLE_LIST_ON;
88 else if (strcasecmp(tmp + 5, "focus") == 0)
89 sy->list = STYLE_LIST_FOCUS;
90 else if (strcasecmp(tmp + 5, "left-marker") == 0)
91 sy->list = STYLE_LIST_LEFT_MARKER;
92 else if (strcasecmp(tmp + 5, "right-marker") == 0)
93 sy->list = STYLE_LIST_RIGHT_MARKER;
94 else
95 goto error;
96 } else if (strcasecmp(tmp, "norange") == 0) {
97 sy->range_type = style_default.range_type;
98 sy->range_argument = style_default.range_type;
99 } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
100 found = strchr(tmp + 6, '|');
101 if (found != NULL) {
102 *found++ = '\0';
103 if (*found == '\0')
104 goto error;
105 for (cp = found; *cp != '\0'; cp++) {
106 if (!isdigit((u_char)*cp))
107 goto error;
108 }
109 }
110 if (strcasecmp(tmp + 6, "left") == 0) {
111 if (found != NULL)
112 goto error;
113 sy->range_type = STYLE_RANGE_LEFT;
114 sy->range_argument = 0;
115 } else if (strcasecmp(tmp + 6, "right") == 0) {
116 if (found != NULL)
117 goto error;
118 sy->range_type = STYLE_RANGE_RIGHT;
119 sy->range_argument = 0;
120 } else if (strcasecmp(tmp + 6, "window") == 0) {
121 if (found == NULL)
122 goto error;
123 sy->range_type = STYLE_RANGE_WINDOW;
124 sy->range_argument = atoi(found);
125 }
126 } else if (strcasecmp(tmp, "noalign") == 0)
127 sy->align = style_default.align;
128 else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
129 if (strcasecmp(tmp + 6, "left") == 0)
130 sy->align = STYLE_ALIGN_LEFT;
131 else if (strcasecmp(tmp + 6, "centre") == 0)
132 sy->align = STYLE_ALIGN_CENTRE;
133 else if (strcasecmp(tmp + 6, "right") == 0)
134 sy->align = STYLE_ALIGN_RIGHT;
135 else
136 goto error;
137 } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) {
138 if ((value = colour_fromstring(tmp + 5)) == -1)
139 goto error;
140 sy->fill = value;
141 } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
142 if ((value = colour_fromstring(tmp + 3)) == -1)
143 goto error;
144 if (*in == 'f' || *in == 'F') {
145 if (value != 8)
146 sy->gc.fg = value;
147 else
148 sy->gc.fg = base->fg;
149 } else if (*in == 'b' || *in == 'B') {
150 if (value != 8)
151 sy->gc.bg = value;
152 else
153 sy->gc.bg = base->bg;
154 } else
155 goto error;
156 } else if (strcasecmp(tmp, "none") == 0)
157 sy->gc.attr = 0;
158 else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
159 if ((value = attributes_fromstring(tmp + 2)) == -1)
160 goto error;
161 sy->gc.attr &= ~value;
162 } else {
163 if ((value = attributes_fromstring(tmp)) == -1)
164 goto error;
165 sy->gc.attr |= value;
166 }
167
168 in += end + strspn(in + end, delimiters);
169 } while (*in != '\0');
170
171 return (0);
172
173error:
174 style_copy(sy, &saved);
175 return (-1);
176}
177
178/* Convert style to a string. */
179const char *
180style_tostring(struct style *sy)
181{
182 struct grid_cell *gc = &sy->gc;
183 int off = 0;
184 const char *comma = "", *tmp = "";
185 static char s[256];
186 char b[16];
187
188 *s = '\0';
189
190 if (sy->list != STYLE_LIST_OFF) {
191 if (sy->list == STYLE_LIST_ON)
192 tmp = "on";
193 else if (sy->list == STYLE_LIST_FOCUS)
194 tmp = "focus";
195 else if (sy->list == STYLE_LIST_LEFT_MARKER)
196 tmp = "left-marker";
197 else if (sy->list == STYLE_LIST_RIGHT_MARKER)
198 tmp = "right-marker";
199 off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
200 tmp);
201 comma = ",";
202 }
203 if (sy->range_type != STYLE_RANGE_NONE) {
204 if (sy->range_type == STYLE_RANGE_LEFT)
205 tmp = "left";
206 else if (sy->range_type == STYLE_RANGE_RIGHT)
207 tmp = "right";
208 else if (sy->range_type == STYLE_RANGE_WINDOW) {
209 snprintf(b, sizeof b, "window|%u", sy->range_argument);
210 tmp = b;
211 }
212 off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
213 tmp);
214 comma = ",";
215 }
216 if (sy->align != STYLE_ALIGN_DEFAULT) {
217 if (sy->align == STYLE_ALIGN_LEFT)
218 tmp = "left";
219 else if (sy->align == STYLE_ALIGN_CENTRE)
220 tmp = "centre";
221 else if (sy->align == STYLE_ALIGN_RIGHT)
222 tmp = "right";
223 off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
224 tmp);
225 comma = ",";
226 }
227 if (sy->default_type != STYLE_DEFAULT_BASE) {
228 if (sy->default_type == STYLE_DEFAULT_PUSH)
229 tmp = "push-default";
230 else if (sy->default_type == STYLE_DEFAULT_POP)
231 tmp = "pop-default";
232 off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
233 comma = ",";
234 }
235 if (sy->fill != 8) {
236 off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
237 colour_tostring(sy->fill));
238 comma = ",";
239 }
240 if (gc->fg != 8) {
241 off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
242 colour_tostring(gc->fg));
243 comma = ",";
244 }
245 if (gc->bg != 8) {
246 off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
247 colour_tostring(gc->bg));
248 comma = ",";
249 }
250 if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
251 xsnprintf(s + off, sizeof s - off, "%s%s", comma,
252 attributes_tostring(gc->attr));
253 comma = ",";
254 }
255
256 if (*s == '\0')
257 return ("default");
258 return (s);
259}
260
261/* Apply a style. */
262void
263style_apply(struct grid_cell *gc, struct options *oo, const char *name)
264{
265 struct style *sy;
266
267 memcpy(gc, &grid_default_cell, sizeof *gc);
268 sy = options_get_style(oo, name);
269 gc->fg = sy->gc.fg;
270 gc->bg = sy->gc.bg;
271 gc->attr |= sy->gc.attr;
272}
273
274/* Initialize style from cell. */
275void
276style_set(struct style *sy, const struct grid_cell *gc)
277{
278 memcpy(sy, &style_default, sizeof *sy);
279 memcpy(&sy->gc, gc, sizeof sy->gc);
280}
281
282/* Copy style. */
283void
284style_copy(struct style *dst, struct style *src)
285{
286 memcpy(dst, src, sizeof *dst);
287}
288
289/* Check if two styles are (visibly) the same. */
290int
291style_equal(struct style *sy1, struct style *sy2)
292{
293 struct grid_cell *gc1 = &sy1->gc;
294 struct grid_cell *gc2 = &sy2->gc;
295
296 if (gc1->fg != gc2->fg)
297 return (0);
298 if (gc1->bg != gc2->bg)
299 return (0);
300 if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK))
301 return (0);
302 if (sy1->fill != sy2->fill)
303 return (0);
304 if (sy1->align != sy2->align)
305 return (0);
306 return (1);
307}
308
309/* Is this style default? */
310int
311style_is_default(struct style *sy)
312{
313 return (style_equal(sy, &style_default));
314}
315