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* mu-store-(read|write).cc: cleanups

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This commit is contained in:
Dirk-Jan C. Binnema
2011-09-18 14:42:10 +03:00
parent 2b41379183
commit a984a70543
3 changed files with 110 additions and 49 deletions
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65
src/mu-store-read.cc
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@ -39,27 +39,32 @@
#include "mu-flags.h"
#include "mu-contacts.h"
/* get a unique id for this message; note, this function returns a
* static buffer -- not reentrant */
// note: not re-entrant
const char*
_MuStore::get_message_uid (const char* path) {
char pfx = 0;
static char buf[PATH_MAX + 10];
if (G_UNLIKELY(!pfx)) {
pfx = mu_msg_field_xapian_prefix(MU_MSG_FIELD_ID_PATH);
buf[0]=pfx;
_MuStore::get_uid_term (const char* path)
{
// combination of DJB, BKDR hash functions to get a 64 bit
// value
unsigned djbhash, bkdrhash, bkdrseed;
unsigned u;
static char hex[18];
djbhash = 5381;
bkdrhash = 0;
bkdrseed = 1313;
for(u = 0; path[u]; ++u) {
djbhash = ((djbhash << 5) + djbhash) + path[u];
bkdrhash = bkdrhash * bkdrseed + path[u];
}
std::strcpy (buf + 1, path);
return buf;
}
/* get a unique id for this message; note, this function returns a
* static buffer -- not reentrant */
const char*
_MuStore::get_message_uid (MuMsg *msg) {
return get_message_uid (mu_msg_get_path(msg));
}
sprintf (hex, MU_STORE_UID_PREFIX "%08x%08x", djbhash, bkdrhash);
return hex;
}
MuStore*
@ -155,7 +160,7 @@ mu_store_contains_message (MuStore *store, const char* path, GError **err)
g_return_val_if_fail (path, FALSE);
try {
const std::string uid (store->get_message_uid(path));
const std::string uid (store->get_uid_term (path));
return store->db_read_only()->term_exists (uid) ? TRUE: FALSE;
} MU_XAPIAN_CATCH_BLOCK_G_ERROR_RETURN(err, MU_ERROR_XAPIAN, FALSE);
@ -163,6 +168,30 @@ mu_store_contains_message (MuStore *store, const char* path, GError **err)
}
unsigned
mu_store_get_docid_for_path (MuStore *store, const char* path, GError **err)
{
g_return_val_if_fail (store, FALSE);
g_return_val_if_fail (path, FALSE);
try {
Xapian::Query query (store->get_uid_term (path)); // uid is a term
Xapian::Enquire enq (*store->db_read_only());
enq.set_query (query);
Xapian::MSet mset (enq.get_mset (0,1));
if (mset.empty())
throw MuStoreError (MU_ERROR_NO_MATCHES,
"message not found");
return *mset.begin();
} MU_XAPIAN_CATCH_BLOCK_G_ERROR_RETURN(err, MU_ERROR_XAPIAN,
MU_STORE_INVALID_DOCID);
}
time_t
mu_store_get_timestamp (MuStore *store, const char* msgpath, GError **err)