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authoretobi <git@e-tobi.net>2013-09-03 09:48:45 +0200
committeretobi <git@e-tobi.net>2013-09-03 09:48:45 +0200
commit9fe4d4ea9c054e539ab679ed2e9c076c35beb69d (patch)
treeaffff927f15c8ae6c77890cc9564855efe2e51db /util/alevt/search.c
parent9a5228e0f2b898367b7943d294be58caf6ce8bb3 (diff)
downloadlinux-dvb-apps-9fe4d4ea9c054e539ab679ed2e9c076c35beb69d.tar.gz
Imported Upstream version 1.1.1+rev1355upstream/1.1.1+rev1355
Diffstat (limited to 'util/alevt/search.c')
-rw-r--r--util/alevt/search.c127
1 files changed, 127 insertions, 0 deletions
diff --git a/util/alevt/search.c b/util/alevt/search.c
new file mode 100644
index 0000000..082cefb
--- /dev/null
+++ b/util/alevt/search.c
@@ -0,0 +1,127 @@
+#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;
+}