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#include <sys/types.h> // for freebsd
#include <stdlib.h>
#include "vt.h"
#include "misc.h"
#include "cache.h"
#include "search.h"
static void convert(u8 *p, u8 *buf, int *line)
{
int x, y, c, ch, gfx, hid = 0;
for (y = 1, p += 40; y < 25; ++y)
{
if (not hid)
{
gfx = 0;
for (x = 0; x < 40; ++x)
{
c = ' ';
switch (ch = *p++)
{
case 0x00 ... 0x07:
gfx = 0;
break;
case 0x10 ... 0x17:
gfx = 1;
break;
case 0x0c:
hid = 1;
break;
case 0x7f:
c = '*';
break;
case 0x20 ... 0x7e:
if (gfx && ch != ' ' && (ch & 0xa0) == 0x20)
ch = '#';
case 0xa0 ... 0xff:
c= ch;
}
*buf++ = c;
}
*buf++ = '\n';
*line++ = y;
}
else
{
p += 40;
hid = 0;
}
}
*line = y;
*buf = 0;
}
static int search_pg(struct search *s, struct vt_page *vtp)
{
regmatch_t m[1];
u8 buf[H *(W+1) + 1];
int line[H];
convert(PTR vtp->data, buf, line);
if (regexec(s->pattern, buf, 1, m, 0) == 0)
{
s->len = 0;
if (m->rm_so >= 0)
{
s->y = line[m->rm_so / (W+1)];
s->x = m->rm_so % (W+1);
s->len = m->rm_eo - m->rm_so;
if (s->x + s->len > 40)
s->len = 40 - s->x;
}
return 1;
}
return 0;
}
struct search * search_start(struct cache *ca, u8 *pattern)
{
struct search *s;
int f = 0;
if (not(s = malloc(sizeof(*s))))
goto fail1;
if (pattern[0] == '!')
pattern++;
else
f = REG_ICASE;
if (regcomp(s->pattern, pattern, f | REG_NEWLINE) != 0)
goto fail2;
s->cache = ca;
return s;
fail2:
free(s);
fail1:
return 0;
}
void search_end(struct search *s)
{
regfree(s->pattern);
free(s);
}
int search_next(struct search *s, int *pgno, int *subno, int dir)
{
struct vt_page *vtp = 0;
if (s->cache)
vtp = s->cache->op->foreach_pg(s->cache, *pgno, *subno, dir,
search_pg, s);
if (vtp == 0)
return -1;
*pgno = vtp->pgno;
*subno = vtp->subno ?: ANY_SUB;
return 0;
}
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