From 3534b428629be185e096be99e3bd5fdfe32d5544 Mon Sep 17 00:00:00 2001 From: Laurent Bercot Date: Thu, 18 Sep 2014 18:55:44 +0000 Subject: initial commit with rc for skalibs-2.0.0.0 --- src/libstddjb/cdb_nextkey.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 src/libstddjb/cdb_nextkey.c (limited to 'src/libstddjb/cdb_nextkey.c') diff --git a/src/libstddjb/cdb_nextkey.c b/src/libstddjb/cdb_nextkey.c new file mode 100644 index 0000000..28925fe --- /dev/null +++ b/src/libstddjb/cdb_nextkey.c @@ -0,0 +1,23 @@ +/* ISC license. */ + +#include +#include + +int cdb_nextkey (struct cdb *c, uint32 *kpos) +{ + char buf[8] ; + uint32 eod, klen ; + if (cdb_read(c, buf, 4, 0) < 0) return -1 ; + uint32_unpack(buf, &eod) ; + if (eod < 8 || eod - 8 < *kpos) return 0 ; + c->kpos = *kpos + 8 ; + if (c->kpos < *kpos) return -1 ; /* wraparound */ + cdb_findstart(c) ; + c->hslots = 1 ; + if (cdb_read(c, buf, 8, *kpos) < 0) return -1 ; + uint32_unpack(buf, &klen) ; + uint32_unpack(buf + 4, &c->dlen) ; + c->dpos = c->kpos + klen ; + *kpos += 8 + klen + c->dlen ; + return 1 ; +} -- cgit v1.2.3