Annotation of src/usr.bin/tmux/style.c, Revision 1.15
1.15 ! nicm 1: /* $OpenBSD: style.c,v 1.14 2017/03/22 07:16:54 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:
22: #include <string.h>
23:
24: #include "tmux.h"
25:
1.15 ! nicm 26: /* Mask for bits not included in style. */
! 27: #define STYLE_ATTR_MASK (~GRID_ATTR_CHARSET)
! 28:
! 29: /* Default style. */
! 30: static struct style style_default = {
! 31: { 0, 0, 8, 8, { { ' ' }, 0, 1, 1 } }
! 32: };
! 33:
! 34: /*
! 35: * Parse an embedded style of the form "fg=colour,bg=colour,bright,...".
! 36: * Note that this adds onto the given style, so it must have been initialized
! 37: * alredy.
! 38: */
1.1 nicm 39: int
1.15 ! nicm 40: style_parse(struct style *sy, const struct grid_cell *base, const char *in)
1.1 nicm 41: {
1.15 ! nicm 42: struct grid_cell *gc = &sy->gc;
! 43: struct grid_cell saved;
! 44: const char delimiters[] = " ,";
! 45: char tmp[32];
! 46: int value, fg, bg, attr, flags;
! 47: size_t end;
1.1 nicm 48:
49: if (*in == '\0')
50: return (0);
51: if (strchr(delimiters, in[strlen(in) - 1]) != NULL)
52: return (-1);
1.15 ! nicm 53: memcpy(&saved, base, sizeof saved);
1.1 nicm 54:
55: fg = gc->fg;
56: bg = gc->bg;
57: attr = gc->attr;
58: flags = gc->flags;
1.15 ! nicm 59:
1.1 nicm 60: do {
61: end = strcspn(in, delimiters);
62: if (end > (sizeof tmp) - 1)
1.5 nicm 63: goto error;
1.1 nicm 64: memcpy(tmp, in, end);
65: tmp[end] = '\0';
66:
67: if (strcasecmp(tmp, "default") == 0) {
1.15 ! nicm 68: fg = base->fg;
! 69: bg = base->bg;
! 70: attr = base->attr;
! 71: flags = base->flags;
1.1 nicm 72: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
1.15 ! nicm 73: if ((value = colour_fromstring(tmp + 3)) == -1)
1.5 nicm 74: goto error;
1.1 nicm 75: if (*in == 'f' || *in == 'F') {
1.15 ! nicm 76: if (value != 8)
! 77: fg = value;
1.10 nicm 78: else
1.15 ! nicm 79: fg = base->fg;
1.1 nicm 80: } else if (*in == 'b' || *in == 'B') {
1.15 ! nicm 81: if (value != 8)
! 82: bg = value;
1.10 nicm 83: else
1.15 ! nicm 84: bg = base->bg;
1.1 nicm 85: } else
1.5 nicm 86: goto error;
1.1 nicm 87: } else if (strcasecmp(tmp, "none") == 0)
88: attr = 0;
89: else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
1.15 ! nicm 90: if ((value = attributes_fromstring(tmp + 2)) == -1)
1.5 nicm 91: goto error;
1.15 ! nicm 92: attr &= ~value;
1.1 nicm 93: } else {
1.15 ! nicm 94: if ((value = attributes_fromstring(tmp)) == -1)
1.5 nicm 95: goto error;
1.15 ! nicm 96: attr |= value;
1.1 nicm 97: }
98:
99: in += end + strspn(in + end, delimiters);
100: } while (*in != '\0');
1.15 ! nicm 101:
1.1 nicm 102: gc->fg = fg;
103: gc->bg = bg;
104: gc->attr = attr;
105: gc->flags = flags;
106:
107: return (0);
1.5 nicm 108:
109: error:
1.15 ! nicm 110: memcpy(gc, &saved, sizeof *gc);
1.5 nicm 111: return (-1);
1.1 nicm 112: }
113:
114: /* Convert style to a string. */
115: const char *
1.15 ! nicm 116: style_tostring(struct style *sy)
1.1 nicm 117: {
1.15 ! nicm 118: struct grid_cell *gc = &sy->gc;
! 119: int off = 0;
! 120: const char *comma = "";
! 121: static char s[256];
1.1 nicm 122:
123: *s = '\0';
124:
1.10 nicm 125: if (gc->fg != 8) {
1.15 ! nicm 126: off += xsnprintf(s + off, sizeof s - off, "%sfg=%s",
! 127: comma, colour_tostring(gc->fg));
! 128: comma = ",";
1.1 nicm 129: }
1.10 nicm 130: if (gc->bg != 8) {
1.1 nicm 131: off += xsnprintf(s + off, sizeof s - off, "%sbg=%s",
1.15 ! nicm 132: comma, colour_tostring(gc->bg));
! 133: comma = ",";
1.1 nicm 134: }
135: if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
136: xsnprintf(s + off, sizeof s - off, "%s%s",
1.15 ! nicm 137: comma, attributes_tostring(gc->attr));
! 138: comma = ",";
1.1 nicm 139: }
140:
141: if (*s == '\0')
142: return ("default");
143: return (s);
144: }
145:
146: /* Apply a style. */
147: void
148: style_apply(struct grid_cell *gc, struct options *oo, const char *name)
149: {
1.15 ! nicm 150: struct style *sy;
1.1 nicm 151:
152: memcpy(gc, &grid_default_cell, sizeof *gc);
1.15 ! nicm 153: sy = options_get_style(oo, name);
! 154: gc->fg = sy->gc.fg;
! 155: gc->bg = sy->gc.bg;
! 156: gc->attr |= sy->gc.attr;
1.1 nicm 157: }
158:
159: /* Apply a style, updating if default. */
160: void
161: style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
162: {
1.15 ! nicm 163: struct style *sy;
! 164:
! 165: sy = options_get_style(oo, name);
! 166: if (sy->gc.fg != 8)
! 167: gc->fg = sy->gc.fg;
! 168: if (sy->gc.bg != 8)
! 169: gc->bg = sy->gc.bg;
! 170: if (sy->gc.attr != 0)
! 171: gc->attr |= sy->gc.attr;
! 172: }
! 173:
! 174: /* Initialize style from cell. */
! 175: void
! 176: style_set(struct style *sy, const struct grid_cell *gc)
! 177: {
! 178: memset(sy, 0, sizeof *sy);
! 179: memcpy(&sy->gc, gc, sizeof sy->gc);
! 180: }
1.1 nicm 181:
1.15 ! nicm 182: /* Copy style. */
! 183: void
! 184: style_copy(struct style *dst, struct style *src)
! 185: {
! 186: memcpy(dst, src, sizeof *dst);
1.8 nicm 187: }
188:
189: /* Check if two styles are the same. */
190: int
1.15 ! nicm 191: style_equal(struct style *sy1, struct style *sy2)
! 192: {
! 193: struct grid_cell *gc1 = &sy1->gc;
! 194: struct grid_cell *gc2 = &sy2->gc;
! 195:
! 196: if (gc1->fg != gc2->fg)
! 197: return (0);
! 198: if (gc1->bg != gc2->bg)
! 199: return (0);
! 200: if ((gc1->attr & STYLE_ATTR_MASK) != (gc2->attr & STYLE_ATTR_MASK))
! 201: return (0);
! 202: return (1);
! 203: }
! 204:
! 205: /* Is this style default? */
! 206: int
! 207: style_is_default(struct style *sy)
1.8 nicm 208: {
1.15 ! nicm 209: return (style_equal(sy, &style_default));
1.1 nicm 210: }
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