Annotation of embedaddon/tmux/style.c, revision 1.1
1.1 ! misho 1: /* $OpenBSD$ */
! 2:
! 3: /*
! 4: * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
! 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: */
! 19:
! 20: #include <sys/types.h>
! 21:
! 22: #include <string.h>
! 23:
! 24: #include "tmux.h"
! 25:
! 26: /* Parse an embedded style of the form "fg=colour,bg=colour,bright,...". */
! 27: int
! 28: style_parse(const struct grid_cell *defgc, struct grid_cell *gc,
! 29: const char *in)
! 30: {
! 31: struct grid_cell savedgc;
! 32: const char delimiters[] = " ,";
! 33: char tmp[32];
! 34: int val, fg, bg, attr, flags;
! 35: size_t end;
! 36:
! 37: if (*in == '\0')
! 38: return (0);
! 39: if (strchr(delimiters, in[strlen(in) - 1]) != NULL)
! 40: return (-1);
! 41: memcpy(&savedgc, gc, sizeof savedgc);
! 42:
! 43: fg = gc->fg;
! 44: bg = gc->bg;
! 45: attr = gc->attr;
! 46: flags = gc->flags;
! 47: do {
! 48: end = strcspn(in, delimiters);
! 49: if (end > (sizeof tmp) - 1)
! 50: goto error;
! 51: memcpy(tmp, in, end);
! 52: tmp[end] = '\0';
! 53:
! 54: if (strcasecmp(tmp, "default") == 0) {
! 55: fg = defgc->fg;
! 56: bg = defgc->bg;
! 57: attr = defgc->attr;
! 58: flags = defgc->flags;
! 59: } else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
! 60: if ((val = colour_fromstring(tmp + 3)) == -1)
! 61: goto error;
! 62: if (*in == 'f' || *in == 'F') {
! 63: if (val != 8)
! 64: fg = val;
! 65: else
! 66: fg = defgc->fg;
! 67: } else if (*in == 'b' || *in == 'B') {
! 68: if (val != 8)
! 69: bg = val;
! 70: else
! 71: bg = defgc->bg;
! 72: } else
! 73: goto error;
! 74: } else if (strcasecmp(tmp, "none") == 0)
! 75: attr = 0;
! 76: else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
! 77: if ((val = attributes_fromstring(tmp + 2)) == -1)
! 78: goto error;
! 79: attr &= ~val;
! 80: } else {
! 81: if ((val = attributes_fromstring(tmp)) == -1)
! 82: goto error;
! 83: attr |= val;
! 84: }
! 85:
! 86: in += end + strspn(in + end, delimiters);
! 87: } while (*in != '\0');
! 88: gc->fg = fg;
! 89: gc->bg = bg;
! 90: gc->attr = attr;
! 91: gc->flags = flags;
! 92:
! 93: return (0);
! 94:
! 95: error:
! 96: memcpy(gc, &savedgc, sizeof *gc);
! 97: return (-1);
! 98: }
! 99:
! 100: /* Convert style to a string. */
! 101: const char *
! 102: style_tostring(struct grid_cell *gc)
! 103: {
! 104: int off = 0, comma = 0;
! 105: static char s[256];
! 106:
! 107: *s = '\0';
! 108:
! 109: if (gc->fg != 8) {
! 110: off += xsnprintf(s, sizeof s, "fg=%s", colour_tostring(gc->fg));
! 111: comma = 1;
! 112: }
! 113:
! 114: if (gc->bg != 8) {
! 115: off += xsnprintf(s + off, sizeof s - off, "%sbg=%s",
! 116: comma ? "," : "", colour_tostring(gc->bg));
! 117: comma = 1;
! 118: }
! 119:
! 120: if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
! 121: xsnprintf(s + off, sizeof s - off, "%s%s",
! 122: comma ? "," : "", attributes_tostring(gc->attr));
! 123: }
! 124:
! 125: if (*s == '\0')
! 126: return ("default");
! 127: return (s);
! 128: }
! 129:
! 130: /* Apply a style. */
! 131: void
! 132: style_apply(struct grid_cell *gc, struct options *oo, const char *name)
! 133: {
! 134: const struct grid_cell *gcp;
! 135:
! 136: memcpy(gc, &grid_default_cell, sizeof *gc);
! 137: gcp = options_get_style(oo, name);
! 138: gc->fg = gcp->fg;
! 139: gc->bg = gcp->bg;
! 140: gc->attr |= gcp->attr;
! 141: }
! 142:
! 143: /* Apply a style, updating if default. */
! 144: void
! 145: style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
! 146: {
! 147: const struct grid_cell *gcp;
! 148:
! 149: gcp = options_get_style(oo, name);
! 150: if (gcp->fg != 8)
! 151: gc->fg = gcp->fg;
! 152: if (gcp->bg != 8)
! 153: gc->bg = gcp->bg;
! 154: if (gcp->attr != 0)
! 155: gc->attr |= gcp->attr;
! 156: }
! 157:
! 158: /* Check if two styles are the same. */
! 159: int
! 160: style_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
! 161: {
! 162: return (gc1->fg == gc2->fg &&
! 163: gc1->bg == gc2->bg &&
! 164: (gc1->flags & ~GRID_FLAG_PADDING) ==
! 165: (gc2->flags & ~GRID_FLAG_PADDING) &&
! 166: (gc1->attr & ~GRID_ATTR_CHARSET) ==
! 167: (gc2->attr & ~GRID_ATTR_CHARSET));
! 168: }
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