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#include "system.h"
#include "rpmlib.h"
dbiIndex * dbiOpenIndex(char * filename, int flags, int perms) {
dbiIndex * db;
db = malloc(sizeof(*db));
db->indexname = strdup(filename);
db->db = dbopen(filename, flags, perms, DB_HASH, NULL);
if (!db->db) {
free(db->indexname);
free(db);
rpmError(RPMERR_DBOPEN, _("cannot open file %s: "), filename,
strerror(errno));
return NULL;
}
return db;
}
void dbiCloseIndex(dbiIndex * dbi) {
dbi->db->close(dbi->db);
free(dbi->indexname);
free(dbi);
}
void dbiSyncIndex(dbiIndex * dbi) {
dbi->db->sync(dbi->db, 0);
}
int dbiSearchIndex(dbiIndex * dbi, char * str, dbiIndexSet * set) {
DBT key, data;
int rc;
key.data = str;
key.size = strlen(str);
rc = dbi->db->get(dbi->db, &key, &data, 0);
if (rc == -1) {
rpmError(RPMERR_DBGETINDEX, _("error getting record %s from %s"),
str, dbi->indexname);
return -1;
} else if (rc == 1) {
return 1;
}
set->recs = data.data;
set->recs = malloc(data.size);
memcpy(set->recs, data.data, data.size);
set->count = data.size / sizeof(dbiIndexRecord);
return 0;
}
int dbiUpdateIndex(dbiIndex * dbi, char * str, dbiIndexSet * set) {
/* 0 on success */
DBT key, data;
int rc;
key.data = str;
key.size = strlen(str);
if (set->count) {
data.data = set->recs;
data.size = set->count * sizeof(dbiIndexRecord);
rc = dbi->db->put(dbi->db, &key, &data, 0);
if (rc) {
rpmError(RPMERR_DBPUTINDEX, _("error storing record %s into %s"),
str, dbi->indexname);
return 1;
}
} else {
rc = dbi->db->del(dbi->db, &key, 0);
if (rc) {
rpmError(RPMERR_DBPUTINDEX, _("error removing record %s into %s"),
str, dbi->indexname);
return 1;
}
}
return 0;
}
int dbiAppendIndexRecord(dbiIndexSet * set, dbiIndexRecord rec) {
set->count++;
if (set->count == 1) {
set->recs = malloc(set->count * sizeof(dbiIndexRecord));
} else {
set->recs = realloc(set->recs, set->count * sizeof(dbiIndexRecord));
}
set->recs[set->count - 1] = rec;
return 0;
}
dbiIndexSet dbiCreateIndexRecord(void) {
dbiIndexSet set;
set.count = 0;
return set;
}
void dbiFreeIndexRecord(dbiIndexSet set) {
free(set.recs);
}
/* returns 1 on failure */
int dbiRemoveIndexRecord(dbiIndexSet * set, dbiIndexRecord rec) {
int from;
int to = 0;
int num = set->count;
int numCopied = 0;
for (from = 0; from < num; from++) {
if (rec.recOffset != set->recs[from].recOffset ||
rec.fileNumber != set->recs[from].fileNumber) {
if (from != to) set->recs[to] = set->recs[from];
to++;
numCopied++;
} else {
set->count--;
}
}
return (numCopied == num);
}
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