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| author | Panu Matilainen <pmatilai@redhat.com> | 2012-09-13 08:48:56 +0300 |
|---|---|---|
| committer | Panu Matilainen <pmatilai@redhat.com> | 2012-09-13 09:01:30 +0300 |
| commit | 1e2c2fece25adad725261089ca47108937067088 (patch) | |
| tree | d9b3a035c768228a7d50f2490e207845294ebd45 /rpmio | |
| parent | b6c794362aa9b3b2552f32bd13775a127febc17d (diff) | |
| download | librpm-tizen-1e2c2fece25adad725261089ca47108937067088.tar.gz librpm-tizen-1e2c2fece25adad725261089ca47108937067088.tar.bz2 librpm-tizen-1e2c2fece25adad725261089ca47108937067088.zip | |
Add a string equality check function to string pool API
- As a special case, two strings (ids) from the same pool can be tested for
equality in constant time (integer comparison). If the pools differ,
a regular string comparison is needed.
Diffstat (limited to 'rpmio')
| -rw-r--r-- | rpmio/rpmstrpool.c | 9 | ||||
| -rw-r--r-- | rpmio/rpmstrpool.h | 4 |
2 files changed, 13 insertions, 0 deletions
diff --git a/rpmio/rpmstrpool.c b/rpmio/rpmstrpool.c index 55fc0e0bd..799136b01 100644 --- a/rpmio/rpmstrpool.c +++ b/rpmio/rpmstrpool.c @@ -173,3 +173,12 @@ size_t rpmstrPoolStrlen(rpmstrPool pool, rpmsid sid) } return slen; } + +int rpmstrPoolStreq(rpmstrPool poolA, rpmsid sidA, + rpmstrPool poolB, rpmsid sidB) +{ + if (poolA == poolB) + return (sidA == sidB); + else + return rstreq(rpmstrPoolStr(poolA, sidA), rpmstrPoolStr(poolB, sidB)); +} diff --git a/rpmio/rpmstrpool.h b/rpmio/rpmstrpool.h index 67e162056..5794032a1 100644 --- a/rpmio/rpmstrpool.h +++ b/rpmio/rpmstrpool.h @@ -36,6 +36,10 @@ const char * rpmstrPoolStr(rpmstrPool sidpool, rpmsid sid); /* get a strings length by its id (in constant time) */ size_t rpmstrPoolStrlen(rpmstrPool pool, rpmsid sid); +/* pool string equality comparison (constant time if within same pool) */ +int rpmstrPoolStreq(rpmstrPool poolA, rpmsid sidA, + rpmstrPool poolB, rpmsid sidB); + #ifdef __cplusplus } #endif |