diff options
Diffstat (limited to 'src/arbits/slbt_archive_meta.c')
| -rw-r--r-- | src/arbits/slbt_archive_meta.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/arbits/slbt_archive_meta.c b/src/arbits/slbt_archive_meta.c index 9a5d542..bf7efb0 100644 --- a/src/arbits/slbt_archive_meta.c +++ b/src/arbits/slbt_archive_meta.c @@ -698,6 +698,32 @@ static int slbt_ar_parse_primary_armap( return SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_FLOW_ERROR); } +struct ar_meta_member_info * slbt_archive_member_from_offset( + struct slbt_archive_meta_impl * meta, + off_t offset) +{ + intptr_t l,r,m; + off_t * offsetv; + + l = 0; + r = meta->nentries - 1; + + offsetv = meta->offsetv; + + while (l != r) { + m = (l + r) / 2; + m += (l + 2) % 2; + + if (offsetv[m] > offset) { + r = --m; + } else { + l = m; + } + } + + return (offsetv[l] == offset) ? meta->memberv[l] : 0; +} + int slbt_get_archive_meta( const struct slbt_driver_ctx * dctx, const struct slbt_raw_archive * archive, |