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/* $OpenBSD: style.c,v 1.14 2017/03/22 07:16:54 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
* Copyright (c) 2014 Tiago Cunha <tcunha@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <string.h>
#include "tmux.h"
/* Parse an embedded style of the form "fg=colour,bg=colour,bright,...". */
int
style_parse(const struct grid_cell *defgc, struct grid_cell *gc,
const char *in)
{
struct grid_cell savedgc;
const char delimiters[] = " ,";
char tmp[32];
int val, fg, bg, attr, flags;
size_t end;
if (*in == '\0')
return (0);
if (strchr(delimiters, in[strlen(in) - 1]) != NULL)
return (-1);
memcpy(&savedgc, gc, sizeof savedgc);
fg = gc->fg;
bg = gc->bg;
attr = gc->attr;
flags = gc->flags;
do {
end = strcspn(in, delimiters);
if (end > (sizeof tmp) - 1)
goto error;
memcpy(tmp, in, end);
tmp[end] = '\0';
if (strcasecmp(tmp, "default") == 0) {
fg = defgc->fg;
bg = defgc->bg;
attr = defgc->attr;
flags = defgc->flags;
} else if (end > 3 && strncasecmp(tmp + 1, "g=", 2) == 0) {
if ((val = colour_fromstring(tmp + 3)) == -1)
goto error;
if (*in == 'f' || *in == 'F') {
if (val != 8)
fg = val;
else
fg = defgc->fg;
} else if (*in == 'b' || *in == 'B') {
if (val != 8)
bg = val;
else
bg = defgc->bg;
} else
goto error;
} else if (strcasecmp(tmp, "none") == 0)
attr = 0;
else if (end > 2 && strncasecmp(tmp, "no", 2) == 0) {
if ((val = attributes_fromstring(tmp + 2)) == -1)
goto error;
attr &= ~val;
} else {
if ((val = attributes_fromstring(tmp)) == -1)
goto error;
attr |= val;
}
in += end + strspn(in + end, delimiters);
} while (*in != '\0');
gc->fg = fg;
gc->bg = bg;
gc->attr = attr;
gc->flags = flags;
return (0);
error:
memcpy(gc, &savedgc, sizeof *gc);
return (-1);
}
/* Convert style to a string. */
const char *
style_tostring(struct grid_cell *gc)
{
int off = 0, comma = 0;
static char s[256];
*s = '\0';
if (gc->fg != 8) {
off += xsnprintf(s, sizeof s, "fg=%s", colour_tostring(gc->fg));
comma = 1;
}
if (gc->bg != 8) {
off += xsnprintf(s + off, sizeof s - off, "%sbg=%s",
comma ? "," : "", colour_tostring(gc->bg));
comma = 1;
}
if (gc->attr != 0 && gc->attr != GRID_ATTR_CHARSET) {
xsnprintf(s + off, sizeof s - off, "%s%s",
comma ? "," : "", attributes_tostring(gc->attr));
}
if (*s == '\0')
return ("default");
return (s);
}
/* Apply a style. */
void
style_apply(struct grid_cell *gc, struct options *oo, const char *name)
{
const struct grid_cell *gcp;
memcpy(gc, &grid_default_cell, sizeof *gc);
gcp = options_get_style(oo, name);
gc->fg = gcp->fg;
gc->bg = gcp->bg;
gc->attr |= gcp->attr;
}
/* Apply a style, updating if default. */
void
style_apply_update(struct grid_cell *gc, struct options *oo, const char *name)
{
const struct grid_cell *gcp;
gcp = options_get_style(oo, name);
if (gcp->fg != 8)
gc->fg = gcp->fg;
if (gcp->bg != 8)
gc->bg = gcp->bg;
if (gcp->attr != 0)
gc->attr |= gcp->attr;
}
/* Check if two styles are the same. */
int
style_equal(const struct grid_cell *gc1, const struct grid_cell *gc2)
{
return (gc1->fg == gc2->fg &&
gc1->bg == gc2->bg &&
(gc1->flags & ~GRID_FLAG_PADDING) ==
(gc2->flags & ~GRID_FLAG_PADDING) &&
(gc1->attr & ~GRID_ATTR_CHARSET) ==
(gc2->attr & ~GRID_ATTR_CHARSET));
}
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