gdbm.c

Go to the documentation of this file.

#include "config.h"
#include <stddef.h>
#include <gdbm.h>
#include "mutt/lib.h"
#include "lib.h"

static void *store_gdbm_open(const char *path)
{
  if (!path)
    return NULL;

  const int pagesize = 4096;

  GDBM_FILE db = gdbm_open((char *) path, pagesize, GDBM_WRCREAT, 00600, NULL);
  if (db)
    return db;

  /* if rw failed try ro */
  return gdbm_open((char *) path, pagesize, GDBM_READER, 00600, NULL);
}

static void *store_gdbm_fetch(void *store, const char *key, size_t klen, size_t *vlen)
{
  if (!store)
    return NULL;

  datum dkey;
  datum data;

  GDBM_FILE db = store;

  dkey.dptr = (char *) key;
  dkey.dsize = klen;
  data = gdbm_fetch(db, dkey);

  *vlen = data.dsize;
  return data.dptr;
}

static void store_gdbm_free(void *store, void **ptr)
{
  FREE(ptr);
}

static int store_gdbm_store(void *store, const char *key, size_t klen, void *value, size_t vlen)
{
  if (!store)
    return -1;

  datum dkey;
  datum databuf;

  GDBM_FILE db = store;

  dkey.dptr = (char *) key;
  dkey.dsize = klen;

  databuf.dsize = vlen;
  databuf.dptr = value;

  return gdbm_store(db, dkey, databuf, GDBM_REPLACE);
}

static int store_gdbm_delete_record(void *store, const char *key, size_t klen)
{
  if (!store)
    return -1;

  datum dkey;

  GDBM_FILE db = store;

  dkey.dptr = (char *) key;
  dkey.dsize = klen;

  return gdbm_delete(db, dkey);
}

static void store_gdbm_close(void **ptr)
{
  if (!ptr || !*ptr)
    return;

  GDBM_FILE db = *ptr;
  gdbm_close(db);
  *ptr = NULL;
}

static const char *store_gdbm_version(void)
{
  return gdbm_version;
}

STORE_BACKEND_OPS(gdbm)