void search_and_delete_dbdirent(DDSTAT *ddstat)
{
BDBCUR *cur;
char *key, *value;
int size;
unsigned long long dir;
unsigned long long ent;
/* traverse records */
cur = tcbdbcurnew(dbdirent);
tcbdbcurfirst(cur);
while ((key = tcbdbcurkey2(cur)) != NULL) {
memcpy(&dir, key, sizeof(dir));
value = tcbdbcurval(cur, &size);;
if (value) {
memcpy(&ent, value, sizeof(ent));
if ( ent == ddstat->stbuf.st_ino) {
printf("Delete %llu:%llu\n",dir,ent);
btdelete_curkey(dbdirent, &dir,
sizeof(unsigned long long), &ent,
sizeof(unsigned long long));
}
free(value);
}
free(key);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
}
int check_directory_has_parent(unsigned long long inode)
{
BDBCUR *cur;
char *key, *value;
int size;
unsigned long long dir;
unsigned long long ent;
int hasparent=0;
/* traverse records */
cur = tcbdbcurnew(dbdirent);
tcbdbcurfirst(cur);
while ((key = tcbdbcurkey2(cur)) != NULL) {
memcpy(&dir, key, sizeof(dir));
value = tcbdbcurval(cur, &size);;
if (value) {
memcpy(&ent, value, sizeof(ent));
if ( inode == ent ) hasparent=1;
free(value);
}
free(key);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
return(hasparent);
}
static PyObject *
list2(PyObject *self,PyObject *args){
const char *dbname;
if (!PyArg_ParseTuple(args, "s", &dbname))
return NULL;
TCADB *adb = openadb(dbname);
PyObject* pList = PyList_New(0);
if(!tcadbiterinit(adb)){
return NULL;
}
BDBCUR *cur = tcbdbcurnew(adb->bdb);
TCXSTR *key = tcxstrnew();
TCXSTR *val = tcxstrnew();
if(!tcbdbcurfirst(cur) && tcbdbecode(adb->bdb) != TCENOREC){
return NULL;
}
while(tcbdbcurrec(cur, key, val)){
PyObject* pList1 = PyList_New(0);
PyList_Append(pList1,Py_BuildValue("s",tcxstrptr(key)));
PyList_Append(pList1,Py_BuildValue("s",tcxstrptr(val)));
PyList_Append(pList,pList1);
if(!tcbdbcurnext(cur) && tcbdbecode(adb->bdb) != TCENOREC){
return NULL;
}
}
tcxstrdel(val);
tcxstrdel(key);
tcbdbcurdel(cur);
closeadb(adb);
return Py_BuildValue("O",pList);
}
IoObject *IoTokyoCabinetCursor_next(IoObject *self, IoObject *locals, IoMessage *m)
{
/*doc TokyoCabinetCursor next
Move cursor to next record. Returns true if there is another key,
or false if there is no next record.
*/
IOASSERT(TokyoCabinetCursor(self), "invalid TokyoCabinetCursor");
return IOBOOL(self, tcbdbcurnext(TokyoCabinetCursor(self)));
}
IoObject *IoTokyoCabinetPrefixCursor_next(IoObject *self, IoObject *locals, IoMessage *m)
{
/*doc TokyoCabinetPrefixCursor next
Move cursor to next record. Returns true if there is another key,
or false if there is no next record.
*/
IoSeq *prefix = IoObject_getSlot_(self, IOSYMBOL("prefix"));
IOASSERT(ISSEQ(prefix), "prefix must be a sequence");
IOASSERT(TokyoCabinetPrefixCursor(self), "invalid TokyoCabinetPrefixCursor");
tcbdbcurnext(TokyoCabinetPrefixCursor(self));
return IOBOOL(self, IoTokyoCabinetPrefixCursor_keyBeginsWithPrefix_(self, prefix));
}
ex_t db_foreach(void *vhandle, db_foreach_t hook, void *userdata)
{
int ret = 0;
dbh_t *handle = vhandle;
TCBDB *dbp = handle->dbp;
BDBCUR *cursor;
dbv_t dbv_key, dbv_data;
int ksiz, dsiz;
char *key, *data;
cursor = tcbdbcurnew(dbp);
ret = tcbdbcurfirst(cursor);
if (ret) {
while ((key = tcbdbcurkey(cursor, &ksiz))) {
data = tcbdbcurval(cursor, &dsiz);
if (data) {
/* switch to "dbv_t *" variables */
dbv_key.leng = ksiz;
dbv_key.data = xmalloc(dbv_key.leng+1);
memcpy(dbv_key.data, key, ksiz);
((char *)dbv_key.data)[dbv_key.leng] = '\0';
dbv_data.data = data;
dbv_data.leng = dsiz; /* read count */
/* call user function */
ret = hook(&dbv_key, &dbv_data, userdata);
xfree(dbv_key.data);
if (ret != 0)
break;
free(data); /* not xfree() as allocated by dpget() */
}
free(key); /* not xfree() as allocated by dpiternext() */
tcbdbcurnext(cursor);
}
} else {
print_error(__FILE__, __LINE__, "(tc) tcbdbcurfirst err: %d, %s",
tcbdbecode(dbp), tcbdberrmsg(tcbdbecode(dbp)));
exit(EX_ERROR);
}
tcbdbcurdel(cursor);
return EX_OK;
}
IoObject *IoTokyoCabinetPrefixCursor_first(IoObject *self, IoObject *locals, IoMessage *m)
{
/*doc TokyoCabinetPrefixCursor first
Move cursor to first record. Returns self
*/
IoSeq *prefix = IoObject_getSlot_(self, IOSYMBOL("prefix"));
IOASSERT(ISSEQ(prefix), "prefix must be a sequence");
IOASSERT(TokyoCabinetPrefixCursor(self), "invalid TokyoCabinetPrefixCursor");
tcbdbcurjump(TokyoCabinetPrefixCursor(self), (const void *)IoSeq_rawBytes(prefix), (int)IoSeq_rawSizeInBytes(prefix));
if(!IoTokyoCabinetPrefixCursor_keyBeginsWithPrefix_(self, prefix))
{
tcbdbcurnext(TokyoCabinetPrefixCursor(self));
}
return IOBOOL(self, IoTokyoCabinetPrefixCursor_keyBeginsWithPrefix_(self, prefix));
}
/* iterators */
dict_si_t
dict_sym_iter(dict_t d)
{
/* uses static state */
static BDBCUR *c;
dict_si_t res;
const void *vp;
int z[1U];
if (UNLIKELY(c == NULL)) {
c = tcbdbcurnew(d);
tcbdbcurjump(c, SYM_SPACE, sizeof(SYM_SPACE));
}
if (UNLIKELY((vp = tcbdbcurval3(c, z)) == NULL)) {
goto null;
} else if (*z != sizeof(int)) {
goto null;
}
/* otherwise fill res */
res.sid = *(const int*)vp;
if (UNLIKELY((vp = tcbdbcurkey3(c, z)) == NULL)) {
goto null;
}
/* or fill */
res.sym = vp;
/* also iterate to the next thing */
tcbdbcurnext(c);
return res;
null:
if (LIKELY(c != NULL)) {
tcbdbcurdel(c);
}
c = NULL;
return (dict_si_t){};
}
int main()
{
void *bdb1, *bdb2;
char *key1, *key2, *val1, *val2;
char *key, *value;
BDBCUR *cur1, *cur2;
char str_key[FRML_ID_CMP_LEN + 1];
char str_val[FRML_ID_CMP_LEN + 2];
unsigned int cnt, dup, steps;
int cmp_res;
FILE *f1, *f2;
bdb1 = bdb_init2("./test1.bdb", &frml_id_cmp);
bdb2 = bdb_init2("./test2.bdb", &frml_id_cmp);
if (bdb1 == NULL || bdb2 == NULL)
return;
#if 0
srand(92019);
printf("put db1...\n");
cnt = 0;
while (cnt < 10000) {
snprintf(str_key, FRML_ID_CMP_LEN + 1,
"%0*d\n", FRML_ID_CMP_LEN, rand());
sprintf(str_val, "v%s", str_key);
bdb_put2(bdb1, str_key, str_val);
cnt ++;
}
printf("put db2...\n");
cnt = 0;
while (cnt < 1000090) {
snprintf(str_key, FRML_ID_CMP_LEN + 1,
"%0*d\n", FRML_ID_CMP_LEN, rand());
sprintf(str_val, "v%s", str_key);
bdb_put2(bdb2, str_key, str_val);
cnt ++;
}
/*
f1 = fopen("log1.txt", "w");
f2 = fopen("log2.txt", "w");
cur1 = tcbdbcurnew(bdb1);
tcbdbcurfirst(cur1);
while ((key = tcbdbcurkey2(cur1)) != NULL) {
value = tcbdbcurval2(cur1);
if (value) {
fprintf(f1, "%s\n", key);
free(value);
}
free(key);
tcbdbcurnext(cur1);
}
tcbdbcurdel(cur1);
cur2 = tcbdbcurnew(bdb2);
tcbdbcurfirst(cur2);
while ((key = tcbdbcurkey2(cur2)) != NULL) {
value = tcbdbcurval2(cur2);
if (value) {
fprintf(f2, "%s\n", key);
free(value);
}
free(key);
tcbdbcurnext(cur2);
}
tcbdbcurdel(cur2);
fclose(f1);
fclose(f2);
*/
#else
#define NUM 10
printf("go one-by-one 100 times...\n");
for (cnt = 0, dup = 0, steps = 0; cnt < NUM; cnt++) {
cur1 = tcbdbcurnew(bdb1);
tcbdbcurfirst(cur1);
while ((key = tcbdbcurkey2(cur1)) != NULL) {
value = tcbdbcurval2(cur1);
if (value) {
//printf("one-by-one: %s\n", key);
if (bdb_get2(bdb2, key)) {
//printf("%s duplicated.\n", key);
dup ++;
}
free(value);
}
free(key);
tcbdbcurnext(cur1);
steps ++;
}
tcbdbcurdel(cur1);
}
printf("%d duplicates in %d steps.\n", dup, steps);
printf("go jumping 100 times...\n");
for (dup = 0, cnt = 0, steps = 0; cnt < NUM; cnt++) {
cur1 = tcbdbcurnew(bdb1);
cur2 = tcbdbcurnew(bdb2);
tcbdbcurfirst(cur1);
tcbdbcurfirst(cur2);
do {
key1 = tcbdbcurkey2(cur1);
key2 = tcbdbcurkey2(cur2);
if (key1 == NULL || key2 == NULL) {
if (key1)
free(key1);
else
free(key2);
break;
}
cmp_res = frml_id_cmp_(key1, key2);
//printf("jumping %s and %s\n", key1, key2);
steps ++;
if (cmp_res == 0) {
val1 = tcbdbcurval2(cur1);
val2 = tcbdbcurval2(cur2);
dup ++;
tcbdbcurnext(cur1);
free(val1);
free(val2);
} else if (cmp_res > 0) /* key1 is larger */ {
tcbdbcurjump2(cur2, key1);
} else /* key2 is larger */ {
tcbdbcurjump2(cur1, key2);
}
free(key1);
free(key2);
} while (1);
}
printf("%d duplicates in %d steps.\n", dup, steps);
#endif
bdb_release(bdb1);
bdb_release(bdb2);
}
void check_directory_structure()
{
BDBCUR *cur;
char *key, *value;
int size;
int hasparent;
unsigned long long dir;
unsigned long long lastdir=0;
unsigned long long ent;
int multi=0;
DBT *data;
/* traverse records */
recheck:
cur = tcbdbcurnew(dbdirent);
tcbdbcurfirst(cur);
while ((key = tcbdbcurkey2(cur)) != NULL) {
show_progress();
memcpy(&dir, key, sizeof(dir));
if ( lastdir == dir ) {
if ( multi == 2 ) {
tcbdbcurnext(cur);
continue;
} else {
multi=1;
}
} else multi=0;
value = tcbdbcurval(cur, &size);;
if (value) {
memcpy(&ent, value, sizeof(ent));
data = search_dbdata(dbp, &ent, sizeof(unsigned long long));
if (NULL == data) {
printf("%ccheck_directory_structure : delete inode %llu present in dbdirent but not found in dbp.\n", BACKSPACE,ent);
btdelete_curkey(dbdirent, &dir, sizeof(unsigned long long),
&ent, sizeof(unsigned long long));
free(value);
free(key);
tcbdbcurdel(cur);
goto recheck;
}
DBTfree(data);
free(value);
if ( multi == 1 ) {
multi++;
if ( dir > 1 ) { // Skip the root directory.
// This is a directory, check if it is linked.
hasparent=check_directory_has_parent(dir);
if ( hasparent == 0 ) {
printf("Directory with inode number %llu is orphaned, relink to lost+found\n", dir);
btbin_write_dup(dbdirent, &lafinode, sizeof(unsigned long long),
&dir, sizeof(unsigned long long));
}
}
}
}
lastdir=dir;
free(key);
tcbdbcurnext(cur);
}
tcbdbcurdel(cur);
}
/* perform list command */
static int proclist(const char *path, TCCMP cmp, int omode, int max, bool pv, bool px, bool bk,
const char *jstr, const char *bstr, const char *estr, const char *fmstr) {
TCBDB *bdb = tcbdbnew();
if (!INVALIDHANDLE(g_dbgfd)) tcbdbsetdbgfd(bdb, g_dbgfd);
if (cmp && !tcbdbsetcmpfunc(bdb, cmp, NULL)) printerr(bdb);
if (!tcbdbsetcodecfunc(bdb, _tc_recencode, NULL, _tc_recdecode, NULL)) printerr(bdb);
if (!tcbdbopen(bdb, path, BDBOREADER | omode)) {
printerr(bdb);
tcbdbdel(bdb);
return 1;
}
bool err = false;
if (bstr || fmstr) {
TCLIST *keys = fmstr ? tcbdbfwmkeys2(bdb, fmstr, max) :
tcbdbrange(bdb, bstr, strlen(bstr), true, estr, strlen(estr), true, max);
int cnt = 0;
for (int i = 0; i < tclistnum(keys); i++) {
int ksiz;
const char *kbuf = tclistval(keys, i, &ksiz);
if (pv) {
TCLIST *vals = tcbdbget4(bdb, kbuf, ksiz);
if (vals) {
for (int j = 0; j < tclistnum(vals); j++) {
int vsiz;
const char *vbuf = tclistval(vals, j, &vsiz);
printdata(kbuf, ksiz, px);
putchar('\t');
printdata(vbuf, vsiz, px);
putchar('\n');
if (max >= 0 && ++cnt >= max) break;
}
tclistdel(vals);
}
} else {
int num = tcbdbvnum(bdb, kbuf, ksiz);
for (int j = 0; j < num; j++) {
printdata(kbuf, ksiz, px);
putchar('\n');
if (max >= 0 && ++cnt >= max) break;
}
}
if (max >= 0 && cnt >= max) break;
}
tclistdel(keys);
} else {
BDBCUR *cur = tcbdbcurnew(bdb);
if (bk) {
if (jstr) {
if (!tcbdbcurjumpback(cur, jstr, strlen(jstr)) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
} else {
if (!tcbdbcurlast(cur) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
}
} else {
if (jstr) {
if (!tcbdbcurjump(cur, jstr, strlen(jstr)) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
} else {
if (!tcbdbcurfirst(cur) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
}
}
TCXSTR *key = tcxstrnew();
TCXSTR *val = tcxstrnew();
int cnt = 0;
while (tcbdbcurrec(cur, key, val)) {
printdata(tcxstrptr(key), tcxstrsize(key), px);
if (pv) {
putchar('\t');
printdata(tcxstrptr(val), tcxstrsize(val), px);
}
putchar('\n');
if (bk) {
if (!tcbdbcurprev(cur) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
} else {
if (!tcbdbcurnext(cur) && tcbdbecode(bdb) != TCENOREC) {
printerr(bdb);
err = true;
}
}
if (max >= 0 && ++cnt >= max) break;
}
tcxstrdel(val);
tcxstrdel(key);
tcbdbcurdel(cur);
}
if (!tcbdbclose(bdb)) {
if (!err) printerr(bdb);
err = true;
}
tcbdbdel(bdb);
return err ? 1 : 0;
}
static int control(ErlDrvData handle, unsigned int command, char* buf, int count, char** res, int res_size) {
tcbdb_drv_t *driver = (tcbdb_drv_t*)handle;
TCBDB *bdb = driver->bdb;
int index = 1, tp, sz, version;
char key[MAX_KEY_SIZE], value[MAX_VALUE_SIZE];
long key_size, value_size;
long long long_tmp;
bool rs;
const char *value_tmp = NULL;
ei_x_buff x;
ei_x_new_with_version(&x);
if (bdb == NULL && command != OPEN)
return ei_error(&x, "database_not_opened", res, res_size);
ei_decode_version(buf, &index, &version);
switch (command) {
case OPEN:
// open(Filepath::string())
if (bdb == NULL) {
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_STRING_EXT)
return ei_error(&x, "invalid_argument", res, res_size);
TCBDB *bdb = tcbdbnew();
tcbdbsetmutex(bdb);
tcbdbsetcache(bdb, 104800, 51200);
tcbdbsetxmsiz(bdb, 1048576);
tcbdbtune(bdb, 0, 0, 0, 7, -1, BDBTLARGE);
char *file = driver_alloc(sz + 1);
ei_decode_string(buf, &index, file);
rs = tcbdbopen(bdb, file, BDBOWRITER | BDBOCREAT);
driver_free(file);
if (!rs)
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
driver->bdb = bdb;
ei_x_encode_atom(&x, "ok");
} else
return ei_error(&x, "database already opened", res, res_size);
break;
case CLOSE:
tcbdbclose(bdb);
tcbdbdel(bdb);
driver->bdb = NULL;
ei_x_encode_atom(&x, "ok");
break;
case PUT:
case PUTDUP:
case PUTCAT:
case PUTKEEP:
// put({Key::binary(), Value::binary()})
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_SMALL_TUPLE_EXT || sz != 2)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_tuple_header(buf, &index, &sz);
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &key[0], &key_size);
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT)
return ei_error(&x, "invalid_argument", res, res_size);
if (sz <= MAX_VALUE_SIZE) {
ei_decode_binary(buf, &index, &value[0], &value_size);
switch (command) {
case PUT: rs = tcbdbput(bdb, &key[0], key_size, &value[0], value_size); break;
case PUTDUP: rs = tcbdbputdup(bdb, &key[0], key_size, &value[0], value_size); break;
case PUTCAT: rs = tcbdbputcat(bdb, &key[0], key_size, &value[0], value_size); break;
default: rs = tcbdbputkeep(bdb, &key[0], key_size, &value[0], value_size);
}
} else {
void *p = driver_alloc(sz);
if (p) {
ei_decode_binary(buf, &index, p, &value_size);
switch (command) {
case PUT: rs = tcbdbput(bdb, &key[0], key_size, p, value_size); break;
case PUTDUP: rs = tcbdbputdup(bdb, &key[0], key_size, p, value_size); break;
case PUTCAT: rs = tcbdbputcat(bdb, &key[0], key_size, p, value_size); break;
default: rs = tcbdbputkeep(bdb, &key[0], key_size, p, value_size);
}
driver_free(p);
} else
return ei_error(&x, "too long value", res, res_size);
};
if (!rs)
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
ei_x_encode_atom(&x, "ok");
break;
case GET:
// get(Key::binary()) -> {ok, Value} | {error, not_found}
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &key[0], &key_size);
value_tmp = tcbdbget3(bdb, &key[0], key_size, &sz);
ei_x_encode_tuple_header(&x, 2);
if (value_tmp != NULL) {
ei_x_encode_atom(&x, "ok");
ei_x_encode_binary(&x, value_tmp, sz);
} else {
ei_x_encode_atom(&x, "error");
ei_x_encode_atom(&x, "not_found");
}
break;
case GETDUP:
// get(Key::binary()) -> {ok, Values}
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &key[0], &key_size);
TCLIST *vals = tcbdbget4(bdb, key, key_size);
if (vals) {
ei_x_encode_tuple_header(&x, 2);
ei_x_encode_atom(&x, "ok");
int j;
for (j=0; j<tclistnum(vals); j++) {
value_tmp = tclistval(vals, j, &sz);
ei_x_encode_list_header(&x, 1);
ei_x_encode_binary(&x, value_tmp, sz);
}
tclistdel(vals);
ei_x_encode_empty_list(&x);
} else {
ei_x_encode_tuple_header(&x, 2);
ei_x_encode_atom(&x, "ok");
ei_x_encode_empty_list(&x);
}
break;
case REMOVE:
// remove(Keys::list())
// remove(Key::binary())
// remove({Key::binary(), Value::binary()})
ei_get_type(buf, &index, &tp, &sz);
if (tp == ERL_LIST_EXT) {
int count, j;
ei_decode_list_header(buf, &index, &count);
for (j=0; j<count; j++) {
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &key[0], &key_size);
if (!tcbdbout3(bdb, &key[0], key_size))
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
}
ei_x_encode_atom(&x, "ok");
} else if (tp == ERL_BINARY_EXT && sz <= MAX_KEY_SIZE) {
ei_decode_binary(buf, &index, &key[0], &key_size);
tcbdbout3(bdb, &key[0], key_size);
ei_x_encode_atom(&x, "ok");
} else if (tp == ERL_SMALL_TUPLE_EXT && sz == 2) {
ei_decode_tuple_header(buf, &index, &sz);
// get key
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &key[0], &key_size);
// get value
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_VALUE_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &value[0], &value_size);
// remove by key&value
BDBCUR *cur = tcbdbcurnew(bdb);
if (!tcbdbcurjump(cur, &key[0], key_size))
return ei_error(&x, "record_not_found", res, res_size);
bool removed = false, not_found = false;
while (!removed && !not_found) {
int cur_key_size, cur_val_size;
const void *curkey = tcbdbcurkey3(cur, &cur_key_size);
if (cur_key_size == key_size && memcmp(curkey, key, key_size) == 0) {
const void *curval = tcbdbcurval3(cur, &cur_val_size);
if (cur_val_size == value_size && memcmp(curval, value, value_size) == 0) {
tcbdbcurout(cur);
removed = true;
} else
if (!tcbdbcurnext(cur))
not_found = true;
} else not_found = true;
}
if (not_found) ei_x_encode_atom(&x, "not_found");
else ei_x_encode_atom(&x, "ok");
} else
return ei_error(&x, "invalid_argument", res, res_size);
break;
case RANGE:
/*
* range({Prefix::binary(), limit:integer()})
* range({StartKey::binary(), BeginInclusion::boolean(), EndKey::binary(), EndInclusion::binary(), limit:integer()})
*/
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_SMALL_TUPLE_EXT || sz < 2)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_tuple_header(buf, &index, &sz);
ei_get_type(buf, &index, &tp, &sz);
if (tp == ERL_BINARY_EXT && sz <= MAX_KEY_SIZE) {
char keys[MAX_KEY_SIZE], keyf[MAX_KEY_SIZE];
long keys_size, keyf_size;
int keys_inc, keyf_inc;
long max = -1;
TCLIST *range;
ei_decode_binary(buf, &index, &keys[0], &keys_size);
ei_get_type(buf, &index, &tp, &sz);
if (tp == ERL_ATOM_EXT) {
// range
ei_decode_boolean(buf, &index, &keys_inc);
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_BINARY_EXT || sz > MAX_KEY_SIZE)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_binary(buf, &index, &keyf[0], &keyf_size);
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_ATOM_EXT)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_boolean(buf, &index, &keyf_inc);
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_INTEGER_EXT)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_long(buf, &index, &max);
range = tcbdbrange(bdb, &keys[0], keys_size, keys_inc == 1, &keyf[0], keyf_size, keyf_inc == 1, max);
} else if (tp == ERL_INTEGER_EXT) {
// prefix
ei_get_type(buf, &index, &tp, &sz);
if (tp != ERL_INTEGER_EXT)
return ei_error(&x, "invalid_argument", res, res_size);
ei_decode_long(buf, &index, &max);
range = tcbdbfwmkeys(bdb, &keys[0], keys_size, max);
} else
return ei_error(&x, "invalid_argument", res, res_size);
const char *key;
int key_size, value_size;
int idx, cnt = 0, rcount = tclistnum(range);
ei_x_encode_tuple_header(&x, 2);
ei_x_encode_atom(&x, "ok");
BDBCUR *cur = tcbdbcurnew(bdb);
for (idx=0; idx<rcount; idx++) {
key = tclistval(range, idx, &key_size);
TCLIST *vals = tcbdbget4(bdb, key, key_size);
if (vals) {
int j;
for (j=0; j<tclistnum(vals); j++) {
ei_x_encode_list_header(&x, 1);
value_tmp = tclistval(vals, j, &value_size);
ei_x_encode_binary(&x, value_tmp, value_size);
if (max >= 0 && ++cnt >= max) break;
}
tclistdel(vals);
}
idx++;
}
tcbdbcurdel(cur);
tclistdel(range);
ei_x_encode_empty_list(&x);
} else
return ei_error(&x, "invalid_argument", res, res_size);
break;
case SYNC:
// sync()
if (!tcbdbsync(bdb))
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
ei_x_encode_atom(&x, "ok");
break;
case INFO:
// info()
ei_x_encode_tuple_header(&x, 3);
ei_x_encode_atom(&x, "ok");
long_tmp = tcbdbrnum(bdb);
ei_x_encode_longlong(&x, long_tmp);
long_tmp = tcbdbfsiz(bdb);
ei_x_encode_longlong(&x, long_tmp);
break;
case ITERATE:
// Read(none) -> {ok, Key} | {error, not_found}
// Read(Key::binary()) -> {ok, Key} | {error, not_found}
ei_get_type(buf, &index, &tp, &sz);
BDBCUR *cur = tcbdbcurnew(bdb);
if (tp == ERL_BINARY_EXT && sz <= MAX_KEY_SIZE) {
ei_decode_binary(buf, &index, &key[0], &key_size);
rs = tcbdbcurjump(cur, &key[0], key_size) && tcbdbcurnext(cur);
} else
rs = tcbdbcurfirst(cur);
if (rs) {
int key_size;
const char *key = tcbdbcurkey3(cur, &key_size);
ei_x_encode_tuple_header(&x, 2);
ei_x_encode_atom(&x, "ok");
ei_x_encode_binary(&x, key, key_size);
tcbdbcurdel(cur);
} else {
tcbdbcurdel(cur);
return ei_error(&x, "not_found", res, res_size);
}
break;
case VANISH:
// vanish() -> ok
if (!tcbdbvanish(bdb))
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
ei_x_encode_atom(&x, "ok");
break;
case BACKUP:
// backup(path::string()) -> ok | {error, Reason}
ei_get_type(buf, &index, &tp, &sz);
if (tp == ERL_STRING_EXT) {
char *file = driver_alloc(sz + 1);
ei_decode_string(buf, &index, file);
if (tcbdbcopy(driver->bdb, file))
ei_x_encode_atom(&x, "ok");
else
return ei_error(&x, tcbdberrmsg(tcbdbecode(bdb)), res, res_size);
} else
return ei_error(&x, "invalid_argument", res, res_size);
break;
default:
return ei_error(&x, "invalid_command", res, res_size);
}
if (res_size < x.index)
(*res) = (char *)driver_alloc(x.index);
int n = x.index;
memcpy(*res, x.buff, x.index);
ei_x_free(&x);
return n;
};
/* next */
JNIEXPORT jboolean JNICALL Java_tokyocabinet_BDBCUR_next
(JNIEnv *env, jobject self){
BDBCUR *cur = (BDBCUR *)(intptr_t)(*env)->GetLongField(env, self, bdbcur_fid_ptr);
return tcbdbcurnext(cur);
}