Annotation of src/usr.bin/tmux/style.c, Revision 1.25
1.25 ! nicm 1: /* $OpenBSD: style.c,v 1.24 2019/09/15 21:42:57 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. */
1.25 ! nicm 29: #define STYLE_ATTR_MASK (~0)
1.15 nicm 30:
31: /* Default style. */
32: static struct style style_default = {
1.23 nicm 33: { { { ' ' }, 0, 1, 1 }, 0, 0, 8, 8, 0 },
1.18 nicm 34:
1.22 nicm 35: 8,
1.18 nicm 36: STYLE_ALIGN_DEFAULT,
37: STYLE_LIST_OFF,
38:
1.24 nicm 39: STYLE_RANGE_NONE, 0,
40:
41: STYLE_DEFAULT_BASE
1.15 nicm 42: };
43:
44: /*
1.24 nicm 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.
1.15 nicm 48: */
1.1 nicm 49: int
1.15 nicm 50: style_parse(struct style *sy, const struct grid_cell *base, const char *in)
1.1 nicm 51: {
1.17 nicm 52: struct style saved;
1.18 nicm 53: const char delimiters[] = " ,", *cp;
54: char tmp[256], *found;
1.17 nicm 55: int value;
56: size_t end;
1.1 nicm 57:
58: if (*in == '\0')
59: return (0);
1.16 nicm 60: style_copy(&saved, sy);
1.1 nicm 61:
1.17 nicm 62: do {
1.20 nicm 63: while (*in != '\0' && strchr(delimiters, *in) != NULL)
1.17 nicm 64: in++;
65: if (*in == '\0')
66: break;
1.15 nicm 67:
1.1 nicm 68: end = strcspn(in, delimiters);
69: if (end > (sizeof tmp) - 1)
1.5 nicm 70: goto error;
1.1 nicm 71: memcpy(tmp, in, end);
72: tmp[end] = '\0';
73:
74: if (strcasecmp(tmp, "default") == 0) {
1.17 nicm 75: sy->gc.fg = base->fg;
76: sy->gc.bg = base->bg;
77: sy->gc.attr = base->attr;
78: sy->gc.flags = base->flags;
1.24 nicm 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)
1.18 nicm 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;
1.22 nicm 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;
1.1 nicm 141: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
1.15 nicm 142: if ((value = colour_fromstring(tmp + 3)) == -1)
1.5 nicm 143: goto error;
1.1 nicm 144: if (*in == 'f' || *in == 'F') {
1.15 nicm 145: if (value != 8)
1.17 nicm 146: sy->gc.fg = value;
1.10 nicm 147: else
1.17 nicm 148: sy->gc.fg = base->fg;
1.1 nicm 149: } else if (*in == 'b' || *in == 'B') {
1.15 nicm 150: if (value != 8)
1.17 nicm 151: sy->gc.bg = value;
1.10 nicm 152: else
1.17 nicm 153: sy->gc.bg = base->bg;
1.1 nicm 154: } else
1.5 nicm 155: goto error;
1.1 nicm 156: } else if (strcasecmp(tmp, "none") == 0)
1.17 nicm 157: sy->gc.attr = 0;
1.1 nicm 158: else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
1.15 nicm 159: if ((value = attributes_fromstring(tmp + 2)) == -1)
1.5 nicm 160: goto error;
1.17 nicm 161: sy->gc.attr &= ~value;
1.1 nicm 162: } else {
1.15 nicm 163: if ((value = attributes_fromstring(tmp)) == -1)
1.5 nicm 164: goto error;
1.17 nicm 165: sy->gc.attr |= value;
1.1 nicm 166: }
167:
168: in += end + strspn(in + end, delimiters);
169: } while (*in != '\0');
1.15 nicm 170:
1.1 nicm 171: return (0);
1.5 nicm 172:
173: error:
1.16 nicm 174: style_copy(sy, &saved);
1.5 nicm 175: return (-1);
1.1 nicm 176: }
177:
178: /* Convert style to a string. */
179: const char *
1.15 nicm 180: style_tostring(struct style *sy)
1.1 nicm 181: {
1.15 nicm 182: struct grid_cell *gc = &sy->gc;
183: int off = 0;
1.19 nicm 184: const char *comma = "", *tmp = "";
1.15 nicm 185: static char s[256];
1.18 nicm 186: char b[16];
1.1 nicm 187:
188: *s = '\0';
189:
1.18 nicm 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: }
1.24 nicm 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: }
1.22 nicm 235: if (sy->fill != 8) {
236: off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
237: colour_tostring(sy->fill));
238: comma = ",";
239: }
1.10 nicm 240: if (gc->fg != 8) {
1.17 nicm 241: off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
242: colour_tostring(gc->fg));
1.15 nicm 243: comma = ",";
1.1 nicm 244: }
1.10 nicm 245: if (gc->bg != 8) {
1.17 nicm 246: off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
247: colour_tostring(gc->bg));
1.15 nicm 248: comma = ",";
1.1 nicm 249: }
1.25 ! nicm 250: if (gc->attr != 0) {
1.17 nicm 251: xsnprintf(s + off, sizeof s - off, "%s%s", comma,
252: attributes_tostring(gc->attr));
1.15 nicm 253: comma = ",";
1.1 nicm 254: }
255:
256: if (*s == '\0')
257: return ("default");
258: return (s);
259: }
260:
261: /* Apply a style. */
262: void
263: style_apply(struct grid_cell *gc, struct options *oo, const char *name)
264: {
1.15 nicm 265: struct style *sy;
1.1 nicm 266:
267: memcpy(gc, &grid_default_cell, sizeof *gc);
1.15 nicm 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. */
275: void
276: style_set(struct style *sy, const struct grid_cell *gc)
277: {
1.17 nicm 278: memcpy(sy, &style_default, sizeof *sy);
1.15 nicm 279: memcpy(&sy->gc, gc, sizeof sy->gc);
280: }
1.1 nicm 281:
1.15 nicm 282: /* Copy style. */
283: void
284: style_copy(struct style *dst, struct style *src)
285: {
286: memcpy(dst, src, sizeof *dst);
1.8 nicm 287: }
288:
1.18 nicm 289: /* Check if two styles are (visibly) the same. */
1.8 nicm 290: int
1.15 nicm 291: style_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))
1.22 nicm 301: return (0);
302: if (sy1->fill != sy2->fill)
1.18 nicm 303: return (0);
304: if (sy1->align != sy2->align)
1.15 nicm 305: return (0);
306: return (1);
307: }
308:
309: /* Is this style default? */
310: int
311: style_is_default(struct style *sy)
1.8 nicm 312: {
1.15 nicm 313: return (style_equal(sy, &style_default));
1.1 nicm 314: }
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