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/* $OpenBSD: style.c,v 1.7 2015/05/07 11:42:56 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
* 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;
size_t end;
u_char fg, bg, attr, flags;
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 &= ~(GRID_FLAG_FG256|GRID_FLAG_BG256);
flags |=
defgc->flags & (GRID_FLAG_FG256|GRID_FLAG_BG256);
} 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) {
if (val & 0x100) {
flags |= GRID_FLAG_FG256;
val &= ~0x100;
} else
flags &= ~GRID_FLAG_FG256;
fg = val;
} else {
fg = defgc->fg;
flags &= ~GRID_FLAG_FG256;
flags |= defgc->flags & GRID_FLAG_FG256;
}
} else if (*in == 'b' || *in == 'B') {
if (val != 8) {
if (val & 0x100) {
flags |= GRID_FLAG_BG256;
val &= ~0x100;
} else
flags &= ~GRID_FLAG_BG256;
bg = val;
} else {
bg = defgc->bg;
flags &= ~GRID_FLAG_BG256;
flags |= defgc->flags & GRID_FLAG_BG256;
}
} 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 c, off = 0, comma = 0;
static char s[256];
*s = '\0';
if (gc->fg != 8 || gc->flags & GRID_FLAG_FG256) {
if (gc->flags & GRID_FLAG_FG256)
c = gc->fg | 0x100;
else
c = gc->fg;
off += xsnprintf(s, sizeof s, "fg=%s", colour_tostring(c));
comma = 1;
}
if (gc->bg != 8 || gc->flags & GRID_FLAG_BG256) {
if (gc->flags & GRID_FLAG_BG256)
c = gc->bg | 0x100;
else
c = gc->bg;
off += xsnprintf(s + off, sizeof s - off, "%sbg=%s",
comma ? "," : "", colour_tostring(c));
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);
}
/* Synchronize new -style option with the old one. */
void
style_update_new(struct options *oo, const char *name, const char *newname)
{
int value;
struct grid_cell *gc;
struct options_entry *o;
/* It's a colour or attribute, but with no -style equivalent. */
if (newname == NULL)
return;
o = options_find1(oo, newname);
if (o == NULL)
o = options_set_style(oo, newname, "default", 0);
gc = &o->style;
o = options_find1(oo, name);
if (o == NULL)
o = options_set_number(oo, name, 8);
value = o->num;
if (strstr(name, "-bg") != NULL)
colour_set_bg(gc, value);
else if (strstr(name, "-fg") != NULL)
colour_set_fg(gc, value);
else if (strstr(name, "-attr") != NULL)
gc->attr = value;
}
/* Synchronize all the old options with the new -style one. */
void
style_update_old(struct options *oo, const char *name, struct grid_cell *gc)
{
char newname[128];
int c, size;
size = strrchr(name, '-') - name;
if (gc->flags & GRID_FLAG_BG256)
c = gc->bg | 0x100;
else
c = gc->bg;
xsnprintf(newname, sizeof newname, "%.*s-bg", size, name);
options_set_number(oo, newname, c);
if (gc->flags & GRID_FLAG_FG256)
c = gc->fg | 0x100;
else
c = gc->fg;
xsnprintf(newname, sizeof newname, "%.*s-fg", size, name);
options_set_number(oo, newname, c);
xsnprintf(newname, sizeof newname, "%.*s-attr", size, name);
options_set_number(oo, newname, gc->attr);
}
/* Apply a style. */
void
style_apply(struct grid_cell *gc, struct options *oo, const char *name)
{
struct grid_cell *gcp;
memcpy(gc, &grid_default_cell, sizeof *gc);
gcp = options_get_style(oo, name);
if (gcp->flags & GRID_FLAG_FG256)
colour_set_fg(gc, gcp->fg | 0x100);
else
colour_set_fg(gc, gcp->fg);
if (gcp->flags & GRID_FLAG_BG256)
colour_set_bg(gc, gcp->bg | 0x100);
else
colour_set_bg(gc, 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)
{
struct grid_cell *gcp;
gcp = options_get_style(oo, name);
if (gcp->fg != 8 || gcp->flags & GRID_FLAG_FG256) {
if (gcp->flags & GRID_FLAG_FG256)
colour_set_fg(gc, gcp->fg | 0x100);
else
colour_set_fg(gc, gcp->fg);
}
if (gcp->bg != 8 || gcp->flags & GRID_FLAG_BG256) {
if (gcp->flags & GRID_FLAG_BG256)
colour_set_bg(gc, gcp->bg | 0x100);
else
colour_set_bg(gc, gcp->bg);
}
if (gcp->attr != 0)
gc->attr |= gcp->attr;
}
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