Annotation of src/usr.bin/tmux/style.c, Revision 1.30
1.30 ! nicm 1: /* $OpenBSD: style.c,v 1.29 2021/03/11 06:41:04 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 },
1.28 nicm 34: 0,
1.18 nicm 35:
1.22 nicm 36: 8,
1.18 nicm 37: STYLE_ALIGN_DEFAULT,
38: STYLE_LIST_OFF,
39:
1.24 nicm 40: STYLE_RANGE_NONE, 0,
41:
42: STYLE_DEFAULT_BASE
1.15 nicm 43: };
44:
45: /*
1.24 nicm 46: * Parse an embedded style of the form "fg=colour,bg=colour,bright,...". Note
47: * that this adds onto the given style, so it must have been initialized
48: * already.
1.15 nicm 49: */
1.1 nicm 50: int
1.15 nicm 51: style_parse(struct style *sy, const struct grid_cell *base, const char *in)
1.1 nicm 52: {
1.17 nicm 53: struct style saved;
1.30 ! nicm 54: const char delimiters[] = " ,\n", *cp;
1.18 nicm 55: char tmp[256], *found;
1.17 nicm 56: int value;
57: size_t end;
1.1 nicm 58:
59: if (*in == '\0')
60: return (0);
1.16 nicm 61: style_copy(&saved, sy);
1.1 nicm 62:
1.26 nicm 63: log_debug("%s: %s", __func__, in);
1.17 nicm 64: do {
1.20 nicm 65: while (*in != '\0' && strchr(delimiters, *in) != NULL)
1.17 nicm 66: in++;
67: if (*in == '\0')
68: break;
1.15 nicm 69:
1.1 nicm 70: end = strcspn(in, delimiters);
71: if (end > (sizeof tmp) - 1)
1.5 nicm 72: goto error;
1.1 nicm 73: memcpy(tmp, in, end);
74: tmp[end] = '\0';
75:
1.26 nicm 76: log_debug("%s: %s", __func__, tmp);
1.1 nicm 77: if (strcasecmp(tmp, "default") == 0) {
1.17 nicm 78: sy->gc.fg = base->fg;
79: sy->gc.bg = base->bg;
80: sy->gc.attr = base->attr;
81: sy->gc.flags = base->flags;
1.28 nicm 82: } else if (strcasecmp(tmp, "ignore") == 0)
83: sy->ignore = 1;
84: else if (strcasecmp(tmp, "noignore") == 0)
85: sy->ignore = 0;
86: else if (strcasecmp(tmp, "push-default") == 0)
1.24 nicm 87: sy->default_type = STYLE_DEFAULT_PUSH;
88: else if (strcasecmp(tmp, "pop-default") == 0)
89: sy->default_type = STYLE_DEFAULT_POP;
90: else if (strcasecmp(tmp, "nolist") == 0)
1.18 nicm 91: sy->list = STYLE_LIST_OFF;
92: else if (strncasecmp(tmp, "list=", 5) == 0) {
93: if (strcasecmp(tmp + 5, "on") == 0)
94: sy->list = STYLE_LIST_ON;
95: else if (strcasecmp(tmp + 5, "focus") == 0)
96: sy->list = STYLE_LIST_FOCUS;
97: else if (strcasecmp(tmp + 5, "left-marker") == 0)
98: sy->list = STYLE_LIST_LEFT_MARKER;
99: else if (strcasecmp(tmp + 5, "right-marker") == 0)
100: sy->list = STYLE_LIST_RIGHT_MARKER;
101: else
102: goto error;
103: } else if (strcasecmp(tmp, "norange") == 0) {
104: sy->range_type = style_default.range_type;
105: sy->range_argument = style_default.range_type;
106: } else if (end > 6 && strncasecmp(tmp, "range=", 6) == 0) {
107: found = strchr(tmp + 6, '|');
108: if (found != NULL) {
109: *found++ = '\0';
110: if (*found == '\0')
111: goto error;
112: for (cp = found; *cp != '\0'; cp++) {
113: if (!isdigit((u_char)*cp))
114: goto error;
115: }
116: }
117: if (strcasecmp(tmp + 6, "left") == 0) {
118: if (found != NULL)
119: goto error;
120: sy->range_type = STYLE_RANGE_LEFT;
121: sy->range_argument = 0;
122: } else if (strcasecmp(tmp + 6, "right") == 0) {
123: if (found != NULL)
124: goto error;
125: sy->range_type = STYLE_RANGE_RIGHT;
126: sy->range_argument = 0;
127: } else if (strcasecmp(tmp + 6, "window") == 0) {
128: if (found == NULL)
129: goto error;
130: sy->range_type = STYLE_RANGE_WINDOW;
131: sy->range_argument = atoi(found);
132: }
133: } else if (strcasecmp(tmp, "noalign") == 0)
134: sy->align = style_default.align;
135: else if (end > 6 && strncasecmp(tmp, "align=", 6) == 0) {
136: if (strcasecmp(tmp + 6, "left") == 0)
137: sy->align = STYLE_ALIGN_LEFT;
138: else if (strcasecmp(tmp + 6, "centre") == 0)
139: sy->align = STYLE_ALIGN_CENTRE;
140: else if (strcasecmp(tmp + 6, "right") == 0)
141: sy->align = STYLE_ALIGN_RIGHT;
1.29 nicm 142: else if (strcasecmp(tmp + 6, "absolute-centre") == 0)
143: sy->align = STYLE_ALIGN_ABSOLUTE_CENTRE;
1.18 nicm 144: else
145: goto error;
1.22 nicm 146: } else if (end > 5 && strncasecmp(tmp, "fill=", 5) == 0) {
147: if ((value = colour_fromstring(tmp + 5)) == -1)
148: goto error;
149: sy->fill = value;
1.1 nicm 150: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
1.15 nicm 151: if ((value = colour_fromstring(tmp + 3)) == -1)
1.5 nicm 152: goto error;
1.1 nicm 153: if (*in == 'f' || *in == 'F') {
1.15 nicm 154: if (value != 8)
1.17 nicm 155: sy->gc.fg = value;
1.10 nicm 156: else
1.17 nicm 157: sy->gc.fg = base->fg;
1.1 nicm 158: } else if (*in == 'b' || *in == 'B') {
1.15 nicm 159: if (value != 8)
1.17 nicm 160: sy->gc.bg = value;
1.10 nicm 161: else
1.17 nicm 162: sy->gc.bg = base->bg;
1.1 nicm 163: } else
1.5 nicm 164: goto error;
1.1 nicm 165: } else if (strcasecmp(tmp, "none") == 0)
1.17 nicm 166: sy->gc.attr = 0;
1.1 nicm 167: else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
1.15 nicm 168: if ((value = attributes_fromstring(tmp + 2)) == -1)
1.5 nicm 169: goto error;
1.17 nicm 170: sy->gc.attr &= ~value;
1.1 nicm 171: } else {
1.15 nicm 172: if ((value = attributes_fromstring(tmp)) == -1)
1.5 nicm 173: goto error;
1.17 nicm 174: sy->gc.attr |= value;
1.1 nicm 175: }
176:
177: in += end + strspn(in + end, delimiters);
178: } while (*in != '\0');
1.15 nicm 179:
1.1 nicm 180: return (0);
1.5 nicm 181:
182: error:
1.16 nicm 183: style_copy(sy, &saved);
1.5 nicm 184: return (-1);
1.1 nicm 185: }
186:
187: /* Convert style to a string. */
188: const char *
1.15 nicm 189: style_tostring(struct style *sy)
1.1 nicm 190: {
1.15 nicm 191: struct grid_cell *gc = &sy->gc;
192: int off = 0;
1.19 nicm 193: const char *comma = "", *tmp = "";
1.15 nicm 194: static char s[256];
1.18 nicm 195: char b[16];
1.1 nicm 196:
197: *s = '\0';
198:
1.18 nicm 199: if (sy->list != STYLE_LIST_OFF) {
200: if (sy->list == STYLE_LIST_ON)
201: tmp = "on";
202: else if (sy->list == STYLE_LIST_FOCUS)
203: tmp = "focus";
204: else if (sy->list == STYLE_LIST_LEFT_MARKER)
205: tmp = "left-marker";
206: else if (sy->list == STYLE_LIST_RIGHT_MARKER)
207: tmp = "right-marker";
208: off += xsnprintf(s + off, sizeof s - off, "%slist=%s", comma,
209: tmp);
210: comma = ",";
211: }
212: if (sy->range_type != STYLE_RANGE_NONE) {
213: if (sy->range_type == STYLE_RANGE_LEFT)
214: tmp = "left";
215: else if (sy->range_type == STYLE_RANGE_RIGHT)
216: tmp = "right";
217: else if (sy->range_type == STYLE_RANGE_WINDOW) {
218: snprintf(b, sizeof b, "window|%u", sy->range_argument);
219: tmp = b;
220: }
221: off += xsnprintf(s + off, sizeof s - off, "%srange=%s", comma,
222: tmp);
223: comma = ",";
224: }
225: if (sy->align != STYLE_ALIGN_DEFAULT) {
226: if (sy->align == STYLE_ALIGN_LEFT)
227: tmp = "left";
228: else if (sy->align == STYLE_ALIGN_CENTRE)
229: tmp = "centre";
230: else if (sy->align == STYLE_ALIGN_RIGHT)
231: tmp = "right";
1.29 nicm 232: else if (sy->align == STYLE_ALIGN_ABSOLUTE_CENTRE)
233: tmp = "absolute-centre";
1.18 nicm 234: off += xsnprintf(s + off, sizeof s - off, "%salign=%s", comma,
235: tmp);
236: comma = ",";
237: }
1.24 nicm 238: if (sy->default_type != STYLE_DEFAULT_BASE) {
239: if (sy->default_type == STYLE_DEFAULT_PUSH)
240: tmp = "push-default";
241: else if (sy->default_type == STYLE_DEFAULT_POP)
242: tmp = "pop-default";
243: off += xsnprintf(s + off, sizeof s - off, "%s%s", comma, tmp);
244: comma = ",";
245: }
1.22 nicm 246: if (sy->fill != 8) {
247: off += xsnprintf(s + off, sizeof s - off, "%sfill=%s", comma,
248: colour_tostring(sy->fill));
249: comma = ",";
250: }
1.10 nicm 251: if (gc->fg != 8) {
1.17 nicm 252: off += xsnprintf(s + off, sizeof s - off, "%sfg=%s", comma,
253: colour_tostring(gc->fg));
1.15 nicm 254: comma = ",";
1.1 nicm 255: }
1.10 nicm 256: if (gc->bg != 8) {
1.17 nicm 257: off += xsnprintf(s + off, sizeof s - off, "%sbg=%s", comma,
258: colour_tostring(gc->bg));
1.15 nicm 259: comma = ",";
1.1 nicm 260: }
1.25 nicm 261: if (gc->attr != 0) {
1.17 nicm 262: xsnprintf(s + off, sizeof s - off, "%s%s", comma,
263: attributes_tostring(gc->attr));
1.15 nicm 264: comma = ",";
1.1 nicm 265: }
266:
267: if (*s == '\0')
268: return ("default");
269: return (s);
270: }
271:
1.27 nicm 272: /* Apply a style on top of the given style. */
1.1 nicm 273: void
1.27 nicm 274: style_add(struct grid_cell *gc, struct options *oo, const char *name,
275: struct format_tree *ft)
1.1 nicm 276: {
1.27 nicm 277: struct style *sy;
278: struct format_tree *ft0 = NULL;
1.1 nicm 279:
1.27 nicm 280: if (ft == NULL)
281: ft = ft0 = format_create(NULL, NULL, 0, FORMAT_NOJOBS);
282:
283: sy = options_string_to_style(oo, name, ft);
284: if (sy == NULL)
285: sy = &style_default;
286: if (sy->gc.fg != 8)
287: gc->fg = sy->gc.fg;
288: if (sy->gc.bg != 8)
289: gc->bg = sy->gc.bg;
290: gc->attr |= sy->gc.attr;
291:
292: if (ft0 != NULL)
293: format_free(ft0);
294: }
295:
296: /* Apply a style on top of the default style. */
297: void
298: style_apply(struct grid_cell *gc, struct options *oo, const char *name,
299: struct format_tree *ft)
300: {
1.1 nicm 301: memcpy(gc, &grid_default_cell, sizeof *gc);
1.27 nicm 302: style_add(gc, oo, name, ft);
1.15 nicm 303: }
304:
305: /* Initialize style from cell. */
306: void
307: style_set(struct style *sy, const struct grid_cell *gc)
308: {
1.17 nicm 309: memcpy(sy, &style_default, sizeof *sy);
1.15 nicm 310: memcpy(&sy->gc, gc, sizeof sy->gc);
311: }
1.1 nicm 312:
1.15 nicm 313: /* Copy style. */
314: void
315: style_copy(struct style *dst, struct style *src)
316: {
317: memcpy(dst, src, sizeof *dst);
1.1 nicm 318: }
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