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#if !defined(lint) && !defined(DOS)
static char rcsid[] = "$Id: color.c 769 2007-10-24 00:15:40Z hubert@u.washington.edu $";
#endif
/*
* ========================================================================
* Copyright 2013-2019 Eduardo Chappa
* Copyright 2006-2007 University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* ========================================================================
*/
#include "../pith/headers.h"
#include "../pith/color.h"
#include "../pith/state.h"
#include "../pith/conf.h"
#include "../pith/filter.h"
char *
color_embed(char *fg, char *bg)
{
static char buf[(2 * RGBLEN) + 5], *p;
p = buf;
if(fg){
if(sizeof(buf)-(p-buf) > 1){
*p++ = TAG_EMBED;
*p++ = TAG_FGCOLOR;
}
sstrncpy(&p, color_to_asciirgb(fg), sizeof(buf)-(p-buf));
}
if(bg){
if(sizeof(buf)-(p-buf) > 1){
*p++ = TAG_EMBED;
*p++ = TAG_BGCOLOR;
}
sstrncpy(&p, color_to_asciirgb(bg), sizeof(buf)-(p-buf));
}
buf[sizeof(buf)-1] = '\0';
return(buf);
}
int
colorcmp(char *color1, char *color2)
{
if(color1 && color2)
return(strcmp(color_to_asciirgb(color1), color_to_asciirgb(color2)));
/* if both NULL they're the same? */
return(!(color1 || color2));
}
struct quote_colors {
COLOR_PAIR *color;
struct quote_colors *next;
};
int
color_a_quote(long int linenum, char *line, LT_INS_S **ins, void *is_flowed_msg)
{
int countem = 0;
struct variable *vars = ps_global->vars;
char *p;
struct quote_colors *colors = NULL, *cp, *next;
COLOR_PAIR *col = NULL;
int is_flowed = is_flowed_msg ? *((int *)is_flowed_msg) : 0;
p = line;
if(!is_flowed)
while(isspace((unsigned char)*p))
p++;
if(p[0] == '>'){
struct quote_colors *c;
/*
* We have a fixed number of quote level colors (3). If there are
* more levels of quoting than are defined, they repeat.
*/
if(VAR_QUOTE1_FORE_COLOR && VAR_QUOTE1_BACK_COLOR &&
(col = new_color_pair(VAR_QUOTE1_FORE_COLOR,
VAR_QUOTE1_BACK_COLOR)) &&
pico_is_good_colorpair(col)){
c = (struct quote_colors *)fs_get(sizeof(*c));
memset(c, 0, sizeof(*c));
c->color = col;
col = NULL;
colors = c;
cp = c;
countem++;
if(VAR_QUOTE2_FORE_COLOR && VAR_QUOTE2_BACK_COLOR &&
(col = new_color_pair(VAR_QUOTE2_FORE_COLOR,
VAR_QUOTE2_BACK_COLOR)) &&
pico_is_good_colorpair(col)){
c = (struct quote_colors *)fs_get(sizeof(*c));
memset(c, 0, sizeof(*c));
c->color = col;
col = NULL;
cp->next = c;
cp = c;
countem++;
if(VAR_QUOTE3_FORE_COLOR && VAR_QUOTE3_BACK_COLOR &&
(col = new_color_pair(VAR_QUOTE3_FORE_COLOR,
VAR_QUOTE3_BACK_COLOR)) &&
pico_is_good_colorpair(col)){
c = (struct quote_colors *)fs_get(sizeof(*cp));
memset(c, 0, sizeof(*c));
c->color = col;
col = NULL;
cp->next = c;
cp = c;
countem++;
}
}
}
}
if(col)
free_color_pair(&col);
cp = NULL;
while(*p == '>'){
cp = (cp && cp->next) ? cp->next : colors;
if(countem > 0)
ins = gf_line_test_new_ins(ins, p,
color_embed(cp->color->fg, cp->color->bg),
(2 * RGBLEN) + 4);
countem = (countem == 1) ? 0 : countem;
p++;
if(!is_flowed)
for(; isspace((unsigned char)*p); p++)
;
}
if(colors){
char fg[RGBLEN + 1], bg[RGBLEN + 1], rgbbuf[RGBLEN + 1];
strncpy(fg, color_to_asciirgb(VAR_NORM_FORE_COLOR), sizeof(fg));
strncpy(bg, color_to_asciirgb(VAR_NORM_BACK_COLOR), sizeof(bg));
fg[sizeof(fg)-1] = '\0';
bg[sizeof(bg)-1] = '\0';
/*
* Loop watching colors, and override with most recent
* quote color whenever the normal foreground and background
* colors are in force.
*/
while(*p)
if(*p++ == TAG_EMBED){
switch(*p++){
case TAG_HANDLE :
p += *p + 1; /* skip handle key */
break;
case TAG_FGCOLOR :
snprintf(rgbbuf, sizeof(rgbbuf), "%s", p);
p += RGBLEN; /* advance past color value */
if(!colorcmp(rgbbuf, VAR_NORM_FORE_COLOR)
&& !colorcmp(bg, VAR_NORM_BACK_COLOR))
ins = gf_line_test_new_ins(ins, p,
color_embed(cp->color->fg,NULL),
RGBLEN + 2);
break;
case TAG_BGCOLOR :
snprintf(rgbbuf, sizeof(rgbbuf), "%s", p);
p += RGBLEN; /* advance past color value */
if(!colorcmp(rgbbuf, VAR_NORM_BACK_COLOR)
&& !colorcmp(fg, VAR_NORM_FORE_COLOR))
ins = gf_line_test_new_ins(ins, p,
color_embed(NULL,cp->color->bg),
RGBLEN + 2);
break;
default :
break;
}
}
ins = gf_line_test_new_ins(ins, line + strlen(line),
color_embed(VAR_NORM_FORE_COLOR,
VAR_NORM_BACK_COLOR),
(2 * RGBLEN) + 4);
for(cp = colors; cp && cp->color; cp = next){
free_color_pair(&cp->color);
next = cp->next;
fs_give((void **)&cp);
}
}
return(0);
}
void
free_spec_colors(SPEC_COLOR_S **colors)
{
if(colors && *colors){
free_spec_colors(&(*colors)->next);
if((*colors)->spec)
fs_give((void **)&(*colors)->spec);
if((*colors)->fg)
fs_give((void **)&(*colors)->fg);
if((*colors)->bg)
fs_give((void **)&(*colors)->bg);
if((*colors)->val)
free_pattern(&(*colors)->val);
fs_give((void **)colors);
}
}
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