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/* GPLv2 applies
* SVN revision: $Revision: 671 $
* (C) 2006-2014 by folkert@vanheusden.com
*/
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "gen.h"
#include "utils.h"
int ansi_color_to_ncurses(int nr)
{
switch(nr)
{
case 0: /* black */
return 1;
case 1: /* red */
return 4;
case 2: /* green */
return 3;
case 3: /* yellow */
return 8;
case 4: /* blue */
return 2;
case 5: /* magenta */
return 12;
case 6: /* cyan */
return 11;
case 7: /* white */
return 0;
}
return -1;
}
void convert_ansi(const char *ansi_in, char *out, int *out_index, int out_len, BOOL *has_color)
{
char *ansi = strdup(ansi_in);
int len = strlen(ansi);
int cmd = 0, index = 0;
string_array_t parts;
BOOL bold = FALSE, underline = FALSE, reverse = FALSE;
int fgc = 0, bgc = 1; /* white on black is default */
const char *values = ansi + 1; /* skip ^[ */
BOOL new_has_color = FALSE;
init_string_array(&parts);
/* remove terminating 'm' */
if (len > 0)
{
cmd = ansi[len - 1];
ansi[len - 1] = 0x00;
}
if (cmd != 'm')
LOG("unexpected ansi command %c!\n", cmd);
if (values[0] == '[')
values++;
split_string(values, ";", TRUE, &parts);
for(index=0; index<string_array_get_n(&parts); index++)
{
int val = atoi(string_array_get(&parts, index));
if (val == 0) /* reset attributes */
{
bold = underline = reverse = FALSE;
fgc = 0;
bgc = 1;
new_has_color = FALSE;
}
else if (val == 1) /* bold */
new_has_color = bold = TRUE;
else if (val == 4) /* underline */
new_has_color = underline = TRUE;
else if (val == 6) /* blink, use reverse */
new_has_color = reverse = TRUE;
else if (val == 7) /* reverse */
new_has_color = reverse = TRUE;
else if (val >= 30 && val <= 37) /* foreground color */
{
fgc = ansi_color_to_ncurses(val - 30);
new_has_color = TRUE;
}
else if (val >= 40 && val <= 47) /* background color */
{
bgc = ansi_color_to_ncurses(val - 40);
new_has_color = TRUE;
}
}
if (*has_color)
*out_index += snprintf(&out[*out_index], out_len - *out_index, "\x03"); /* ^c terminate previous sequence */
if (bold)
*out_index += snprintf(&out[*out_index], out_len - *out_index, "\x02"); /* ^B */
if (underline)
*out_index += snprintf(&out[*out_index], out_len - *out_index, "\x1f"); /* ^U */
if (reverse)
*out_index += snprintf(&out[*out_index], out_len - *out_index, "\x16"); /* ^V */
*out_index += snprintf(&out[*out_index], out_len - *out_index, "\x03%d,%d", fgc, bgc);
*has_color = new_has_color;
free_splitted_string(&parts);
free(ansi);
}
const char *filter_ansi(const char *string_in)
{
int len = strlen(string_in);
int out_len = len * 8 + 1;
char *out = (char *)calloc(1, out_len);
char *ansi = (char *)calloc(1, len + 1);
int index = 0, out_index = 0, ansi_index = 0;
BOOL is_ansi = FALSE, has_color = FALSE;
for(index=0; index<len; index++)
{
int c = string_in[index];
if (is_ansi)
{
ansi[ansi_index++] = c;
/* 16 is an arbitrary limit on the length of ansi escape sequences */
if (isalpha(c) || ansi_index > 16)
{
if (c == 'm') /* color */
convert_ansi(ansi, out, &out_index, out_len - 1, &has_color);
is_ansi = FALSE;
ansi_index = 0;
}
}
else if (c == 27)
{
is_ansi = TRUE;
ansi[ansi_index++] = c;
}
else
out[out_index++] = c;
}
if (has_color)
out[out_index++] = 0x03;
out[out_index] = 0x00;
free(ansi);
return out;
}
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