Annotation of src/usr.bin/tmux/style.c, Revision 1.22
1.22 ! nicm 1: /* $OpenBSD: style.c,v 1.21 2019/06/27 15:17:41 nicm Exp $ */
1.1 nicm 2:
3: /*
1.9 nicm 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 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: */
1.4 nicm 19:
20: #include <sys/types.h>
1.1 nicm 21:
1.18 nicm 22: #include <ctype.h>
23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
25:
26: #include "tmux.h"
27:
1.15 nicm 28: /* Mask for bits not included in style. */
29: #define STYLE_ATTR_MASK (~GRID_ATTR_CHARSET)
30:
31: /* Default style. */
32: static struct style style_default = {
1.21 nicm 33: { 0, 0, 8, 8, 0, { { ' ' }, 0, 1, 1 } },
1.18 nicm 34:
1.22 ! nicm 35: 8,
1.18 nicm 36: STYLE_ALIGN_DEFAULT,
37: STYLE_LIST_OFF,
38:
39: STYLE_RANGE_NONE, 0
1.15 nicm 40: };
41:
42: /*
43: * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".
44: * Note that this adds onto the given style, so it must have been initialized
45: * alredy.
46: */
1.1 nicm 47: int
1.15 nicm 48: style_parse(struct style *sy, const struct grid_cell *base, const char *in)
1.1 nicm 49: {
1.17 nicm 50: struct style saved;
1.18 nicm 51: const char delimiters[] = " ,", *cp;
52: char tmp[256], *found;
1.17 nicm 53: int value;
54: size_t end;
1.1 nicm 55:
56: if (*in == '\0')
57: return (0);
1.16 nicm 58: style_copy(&saved, sy);
1.1 nicm 59:
1.17 nicm 60: do {
1.20 nicm 61: while (*in != '\0' && strchr(delimiters, *in) != NULL)
1.17 nicm 62: in++;
63: if (*in == '\0')
64: break;
1.15 nicm 65:
1.1 nicm 66: end = strcspn(in, delimiters);
67: if (end > (sizeof tmp) - 1)
1.5 nicm 68: goto error;
1.1 nicm 69: memcpy(tmp, in, end);
70: tmp[end] = '\0';
71:
72: if (strcasecmp(tmp, "default") == 0) {
1.17 nicm 73: sy->gc.fg = base->fg;
74: sy->gc.bg = base->bg;
75: sy->gc.attr = base->attr;
76: sy->gc.flags = base->flags;
1.18 nicm 77: } else if (strcasecmp(tmp, "nolist") == 0)
78: sy->list = STYLE_LIST_OFF;
79: else if (strncasecmp(tmp, "list=", 5) == 0) {
80: if (strcasecmp(tmp + 5, "on") == 0)
81: sy->list = STYLE_LIST_ON;
82: else if (strcasecmp(tmp + 5, "focus") == 0)
83: sy->list = STYLE_LIST_FOCUS;
84: else if (strcasecmp(tmp + 5, "left-marker") == 0)
85: sy->list = STYLE_LIST_LEFT_MARKER;
86: else if (strcasecmp(tmp + 5, "right-marker") == 0)
87: sy->list = STYLE_LIST_RIGHT_MARKER;
88: else
89: goto error;
90: } else if (strcasecmp(tmp, "norange") == 0) {
91: sy->range_type = style_default.range_type;
92: sy->range_argument = style_default.range_type;
93: } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
94: found = strchr(tmp + 6, '|');
95: if (found != NULL) {
96: *found++ = '\0';
97: if (*found == '\0')
98: goto error;
99: for (cp = found; *cp != '\0'; cp++) {
100: if (!isdigit((u_char)*cp))
101: goto error;
102: }
103: }
104: if (strcasecmp(tmp + 6, "left") == 0) {
105: if (found != NULL)
106: goto error;
107: sy->range_type = STYLE_RANGE_LEFT;
108: sy->range_argument = 0;
109: } else if (strcasecmp(tmp + 6, "right") == 0) {
110: if (found != NULL)
111: goto error;
112: sy->range_type = STYLE_RANGE_RIGHT;
113: sy->range_argument = 0;
114: } else if (strcasecmp(tmp + 6, "window") == 0) {
115: if (found == NULL)
116: goto error;
117: sy->range_type = STYLE_RANGE_WINDOW;
118: sy->range_argument = atoi(found);
119: }
120: } else if (strcasecmp(tmp, "noalign") == 0)
121: sy->align = style_default.align;
122: else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
123: if (strcasecmp(tmp + 6, "left") == 0)
124: sy->align = STYLE_ALIGN_LEFT;
125: else if (strcasecmp(tmp + 6, "centre") == 0)
126: sy->align = STYLE_ALIGN_CENTRE;
127: else if (strcasecmp(tmp + 6, "right") == 0)
128: sy->align = STYLE_ALIGN_RIGHT;
129: else
130: goto error;
1.22 ! nicm 131: } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) {
! 132: if ((value = colour_fromstring(tmp + 5)) == -1)
! 133: goto error;
! 134: sy->fill = value;
1.1 nicm 135: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
1.15 nicm 136: if ((value = colour_fromstring(tmp + 3)) == -1)
1.5 nicm 137: goto error;
1.1 nicm 138: if (*in == 'f' || *in == 'F') {
1.15 nicm 139: if (value != 8)
1.17 nicm 140: sy->gc.fg = value;
1.10 nicm 141: else
1.17 nicm 142: sy->gc.fg = base->fg;
1.1 nicm 143: } else if (*in == 'b' || *in == 'B') {
1.15 nicm 144: if (value != 8)
1.17 nicm 145: sy->gc.bg = value;
1.10 nicm 146: else
1.17 nicm 147: sy->gc.bg = base->bg;
1.1 nicm 148: } else
1.5 nicm 149: goto error;
1.1 nicm 150: } else if (strcasecmp(tmp, "none") == 0)
1.17 nicm 151: sy->gc.attr = 0;
1.1 nicm 152: else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
1.15 nicm 153: if ((value = attributes_fromstring(tmp + 2)) == -1)
1.5 nicm 154: goto error;
1.17 nicm 155: sy->gc.attr &= ~value;
1.1 nicm 156: } else {
1.15 nicm 157: if ((value = attributes_fromstring(tmp)) == -1)
1.5 nicm 158: goto error;
1.17 nicm 159: sy->gc.attr |= value;
1.1 nicm 160: }
161:
162: in += end + strspn(in + end, delimiters);
163: } while (*in != '\0');
1.15 nicm 164:
1.1 nicm 165: return (0);
1.5 nicm 166:
167: error:
1.16 nicm 168: style_copy(sy, &saved);
1.5 nicm 169: return (-1);
1.1 nicm 170: }
171:
172: /* Convert style to a string. */
173: const char *
1.15 nicm 174: style_tostring(struct style *sy)
1.1 nicm 175: {
1.15 nicm 176: struct grid_cell *gc = &sy->gc;
177: int off = 0;
1.19 nicm 178: const char *comma = "", *tmp = "";
1.15 nicm 179: static char s[256];
1.18 nicm 180: char b[16];
1.1 nicm 181:
182: *s = '\0';
183:
1.18 nicm 184: if (sy->list != STYLE_LIST_OFF) {
185: if (sy->list == STYLE_LIST_ON)
186: tmp = "on";
187: else if (sy->list == STYLE_LIST_FOCUS)
188: tmp = "focus";
189: else if (sy->list == STYLE_LIST_LEFT_MARKER)
190: tmp = "left-marker";
191: else if (sy->list == STYLE_LIST_RIGHT_MARKER)
192: tmp = "right-marker";
193: off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
194: tmp);
195: comma = ",";
196: }
197: if (sy->range_type != STYLE_RANGE_NONE) {
198: if (sy->range_type == STYLE_RANGE_LEFT)
199: tmp = "left";
200: else if (sy->range_type == STYLE_RANGE_RIGHT)
201: tmp = "right";
202: else if (sy->range_type == STYLE_RANGE_WINDOW) {
203: snprintf(b, sizeof b, "window|%u", sy->range_argument);
204: tmp = b;
205: }
206: off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
207: tmp);
208: comma = ",";
209: }
210: if (sy->align != STYLE_ALIGN_DEFAULT) {
211: if (sy->align == STYLE_ALIGN_LEFT)
212: tmp = "left";
213: else if (sy->align == STYLE_ALIGN_CENTRE)
214: tmp = "centre";
215: else if (sy->align == STYLE_ALIGN_RIGHT)
216: tmp = "right";
217: off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
218: tmp);
219: comma = ",";
220: }
1.22 ! nicm 221: if (sy->fill != 8) {
! 222: off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
! 223: colour_tostring(sy->fill));
! 224: comma = ",";
! 225: }
1.10 nicm 226: if (gc->fg != 8) {
1.17 nicm 227: off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
228: colour_tostring(gc->fg));
1.15 nicm 229: comma = ",";
1.1 nicm 230: }
1.10 nicm 231: if (gc->bg != 8) {
1.17 nicm 232: off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
233: colour_tostring(gc->bg));
1.15 nicm 234: comma = ",";
1.1 nicm 235: }
236: if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
1.17 nicm 237: xsnprintf(s + off, sizeof s - off, "%s%s", comma,
238: attributes_tostring(gc->attr));
1.15 nicm 239: comma = ",";
1.1 nicm 240: }
241:
242: if (*s == '\0')
243: return ("default");
244: return (s);
245: }
246:
247: /* Apply a style. */
248: void
249: style_apply(struct grid_cell *gc, struct options *oo, const char *name)
250: {
1.15 nicm 251: struct style *sy;
1.1 nicm 252:
253: memcpy(gc, &grid_default_cell, sizeof *gc);
1.15 nicm 254: sy = options_get_style(oo, name);
255: gc->fg = sy->gc.fg;
256: gc->bg = sy->gc.bg;
257: gc->attr |= sy->gc.attr;
1.1 nicm 258: }
259:
260: /* Apply a style, updating if default. */
261: void
262: style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
263: {
1.15 nicm 264: struct style *sy;
265:
266: sy = options_get_style(oo, name);
267: if (sy->gc.fg != 8)
268: gc->fg = sy->gc.fg;
269: if (sy->gc.bg != 8)
270: gc->bg = sy->gc.bg;
271: if (sy->gc.attr != 0)
272: gc->attr |= sy->gc.attr;
273: }
274:
275: /* Initialize style from cell. */
276: void
277: style_set(struct style *sy, const struct grid_cell *gc)
278: {
1.17 nicm 279: memcpy(sy, &style_default, sizeof *sy);
1.15 nicm 280: memcpy(&sy->gc, gc, sizeof sy->gc);
281: }
1.1 nicm 282:
1.15 nicm 283: /* Copy style. */
284: void
285: style_copy(struct style *dst, struct style *src)
286: {
287: memcpy(dst, src, sizeof *dst);
1.8 nicm 288: }
289:
1.18 nicm 290: /* Check if two styles are (visibly) the same. */
1.8 nicm 291: int
1.15 nicm 292: style_equal(struct style *sy1, struct style *sy2)
293: {
294: struct grid_cell *gc1 = &sy1->gc;
295: struct grid_cell *gc2 = &sy2->gc;
296:
297: if (gc1->fg != gc2->fg)
298: return (0);
299: if (gc1->bg != gc2->bg)
300: return (0);
301: if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK))
1.22 ! nicm 302: return (0);
! 303: if (sy1->fill != sy2->fill)
1.18 nicm 304: return (0);
305: if (sy1->align != sy2->align)
1.15 nicm 306: return (0);
307: return (1);
308: }
309:
310: /* Is this style default? */
311: int
312: style_is_default(struct style *sy)
1.8 nicm 313: {
1.15 nicm 314: return (style_equal(sy, &style_default));
1.1 nicm 315: }