smol/color.c

137 lines
4.1 KiB
C

/* $Id$ */
/**************************************************************************
* color.c *
* *
* Copyright (C) 1999-2003 Chris Allegretta *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software *
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
* *
**************************************************************************/
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "proto.h"
#include "nano.h"
#ifdef ENABLE_COLOR
/* For each syntax list entry, we go through the list of colors and
* assign color pairs. */
void set_colorpairs(void)
{
const syntaxtype *this_syntax = syntaxes;
for(; this_syntax != NULL; this_syntax = this_syntax->next) {
colortype *this_color = this_syntax->color;
int color_pair = 1;
for(; this_color != NULL; this_color = this_color->next) {
const colortype *beforenow = this_syntax->color;
for(; beforenow != NULL && beforenow != this_color &&
(beforenow->fg != this_color->fg ||
beforenow->bg != this_color->bg ||
beforenow->bright != this_color->bright);
beforenow = beforenow->next)
;
if (beforenow != NULL && beforenow != this_color)
this_color->pairnum = beforenow->pairnum;
else {
this_color->pairnum = color_pair;
color_pair++;
}
}
}
}
void do_colorinit(void)
{
if (has_colors()) {
const colortype *tmpcolor = NULL;
#ifdef HAVE_USE_DEFAULT_COLORS
int defok;
#endif
start_color();
/* Add in colors, if available */
#ifdef HAVE_USE_DEFAULT_COLORS
defok = use_default_colors() != ERR;
#endif
for (tmpcolor = colorstrings; tmpcolor != NULL;
tmpcolor = tmpcolor->next) {
short background = tmpcolor->bg;
if (background == -1)
#ifdef HAVE_USE_DEFAULT_COLORS
if (!defok)
#endif
background = COLOR_BLACK;
init_pair(tmpcolor->pairnum, tmpcolor->fg, background);
#ifdef DEBUG
fprintf(stderr, _("Running %s with fg = %d and bg = %d\n"),
"init_pair()", tmpcolor->fg, tmpcolor->bg);
#endif
}
}
}
/* Update the color information based on the current filename. */
void update_color(void)
{
const syntaxtype *tmpsyntax;
colorstrings = NULL;
for (tmpsyntax = syntaxes; tmpsyntax != NULL; tmpsyntax = tmpsyntax->next) {
const exttype *e;
for (e = tmpsyntax->extensions; e != NULL; e = e->next) {
regex_t syntaxfile_regexp;
regcomp(&syntaxfile_regexp, e->val, REG_EXTENDED | REG_NOSUB);
/* Set colorstrings if we matched the extension regex */
if (!regexec(&syntaxfile_regexp, filename, 0, NULL, 0))
colorstrings = tmpsyntax->color;
regfree(&syntaxfile_regexp);
if (colorstrings != NULL)
break;
}
}
/* if we haven't found a match, use the override string */
if (colorstrings == NULL && syntaxstr != NULL) {
for (tmpsyntax = syntaxes; tmpsyntax != NULL;
tmpsyntax = tmpsyntax->next) {
if (!strcasecmp(tmpsyntax->desc, syntaxstr))
colorstrings = tmpsyntax->color;
}
}
do_colorinit();
}
#endif /* ENABLE_COLOR */