1 #![allow(non_camel_case_types, non_upper_case_globals, non_snake_case)] 2 3 extern crate libc; 4 5 use libc::{c_char, c_int, c_uchar, c_void}; 6 use libc::size_t; 7 8 // These are opaque types that LevelDB uses. 9 pub enum leveldb_t {} 10 pub enum leveldb_cache_t {} 11 pub enum leveldb_comparator_t {} 12 pub enum leveldb_env_t {} 13 pub enum leveldb_filelock_t {} 14 pub enum leveldb_filterpolicy_t {} 15 pub enum leveldb_iterator_t {} 16 pub enum leveldb_logger_t {} 17 pub enum leveldb_options_t {} 18 pub enum leveldb_randomfile_t {} 19 pub enum leveldb_readoptions_t {} 20 pub enum leveldb_seqfile_t {} 21 pub enum leveldb_snapshot_t {} 22 pub enum leveldb_writablefile_t {} 23 pub enum leveldb_writebatch_t {} 24 pub enum leveldb_writeoptions_t {} 25 26 #[repr(C)] 27 #[derive(Copy,Clone)] 28 pub enum Compression { 29 No = 0, 30 Snappy = 1 31 } 32 33 extern "C" { 34 // DB operations leveldb_open(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char) -> *mut leveldb_t35 pub fn leveldb_open(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char) -> *mut leveldb_t; leveldb_close(db: *mut leveldb_t)36 pub fn leveldb_close(db: *mut leveldb_t); leveldb_put(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, key: *const c_char, keylen: size_t, val: *const c_char, vallen: size_t, errptr: *mut *mut c_char)37 pub fn leveldb_put(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, key: *const c_char, keylen: size_t, val: *const c_char, vallen: size_t, errptr: *mut *mut c_char); leveldb_delete(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, key: *const c_char, keylen: size_t, errptr: *mut *mut c_char)38 pub fn leveldb_delete(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, key: *const c_char, keylen: size_t, errptr: *mut *mut c_char); leveldb_write(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, batch: *mut leveldb_writebatch_t, errptr: *mut *mut c_char)39 pub fn leveldb_write(db: *mut leveldb_t, options: *const leveldb_writeoptions_t, batch: *mut leveldb_writebatch_t, errptr: *mut *mut c_char); leveldb_get(db: *mut leveldb_t, options: *const leveldb_readoptions_t, key: *const c_char, keylen: size_t, vallen: *mut size_t, errptr: *mut *mut c_char) -> *mut c_char40 pub fn leveldb_get(db: *mut leveldb_t, options: *const leveldb_readoptions_t, key: *const c_char, keylen: size_t, vallen: *mut size_t, errptr: *mut *mut c_char) -> *mut c_char; leveldb_create_iterator(db: *mut leveldb_t, options: *const leveldb_readoptions_t) -> *mut leveldb_iterator_t41 pub fn leveldb_create_iterator(db: *mut leveldb_t, options: *const leveldb_readoptions_t) -> *mut leveldb_iterator_t; leveldb_create_snapshot(db: *mut leveldb_t) -> *mut leveldb_snapshot_t42 pub fn leveldb_create_snapshot(db: *mut leveldb_t) -> *mut leveldb_snapshot_t; leveldb_release_snapshot(db: *mut leveldb_t, snapshot: *const leveldb_snapshot_t)43 pub fn leveldb_release_snapshot(db: *mut leveldb_t, snapshot: *const leveldb_snapshot_t); leveldb_property_value(db: *mut leveldb_t, propname: *const c_char) -> *mut c_char44 pub fn leveldb_property_value(db: *mut leveldb_t, propname: *const c_char) -> *mut c_char; 45 46 // TODO: const'ness of pointers here is in question leveldb_approximate_sizes(db: *mut leveldb_t, num_ranges: c_int, range_start_key: *const *const c_char, range_start_key_len: *const size_t, range_limit_key: *const *const c_char, range_limit_key_len: *const size_t, sizes: *mut u64)47 pub fn leveldb_approximate_sizes(db: *mut leveldb_t, num_ranges: c_int, range_start_key: *const *const c_char, range_start_key_len: *const size_t, range_limit_key: *const *const c_char, range_limit_key_len: *const size_t, sizes: *mut u64); leveldb_compact_range(db: *mut leveldb_t, start_key: *const c_char, start_key_len: size_t, limit_key: *const c_char, limit_key_len: size_t)48 pub fn leveldb_compact_range(db: *mut leveldb_t, start_key: *const c_char, start_key_len: size_t, limit_key: *const c_char, limit_key_len: size_t); 49 50 // Management operations leveldb_destroy_db(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char)51 pub fn leveldb_destroy_db(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char); leveldb_repair_db(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char)52 pub fn leveldb_repair_db(options: *const leveldb_options_t, name: *const c_char, errptr: *mut *mut c_char); 53 54 // Iterator leveldb_iter_destroy(it: *mut leveldb_iterator_t)55 pub fn leveldb_iter_destroy(it: *mut leveldb_iterator_t); leveldb_iter_valid(it: *const leveldb_iterator_t) -> c_uchar56 pub fn leveldb_iter_valid(it: *const leveldb_iterator_t) -> c_uchar; leveldb_iter_seek_to_first(it: *mut leveldb_iterator_t)57 pub fn leveldb_iter_seek_to_first(it: *mut leveldb_iterator_t); leveldb_iter_seek_to_last(it: *mut leveldb_iterator_t)58 pub fn leveldb_iter_seek_to_last(it: *mut leveldb_iterator_t); leveldb_iter_seek(it: *mut leveldb_iterator_t, k: *const c_char, klen: size_t)59 pub fn leveldb_iter_seek(it: *mut leveldb_iterator_t, k: *const c_char, klen: size_t); leveldb_iter_next(it: *mut leveldb_iterator_t)60 pub fn leveldb_iter_next(it: *mut leveldb_iterator_t); leveldb_iter_prev(it: *mut leveldb_iterator_t)61 pub fn leveldb_iter_prev(it: *mut leveldb_iterator_t); leveldb_iter_key(it: *const leveldb_iterator_t, klen: *const size_t) -> *const c_char62 pub fn leveldb_iter_key(it: *const leveldb_iterator_t, klen: *const size_t) -> *const c_char; leveldb_iter_value(it: *const leveldb_iterator_t, vlen: *const size_t) -> *const c_char63 pub fn leveldb_iter_value(it: *const leveldb_iterator_t, vlen: *const size_t) -> *const c_char; leveldb_iter_get_error(it: *const leveldb_iterator_t, errptr: *const *const c_char)64 pub fn leveldb_iter_get_error(it: *const leveldb_iterator_t, errptr: *const *const c_char); 65 66 // Write batch leveldb_writebatch_create() -> *mut leveldb_writebatch_t67 pub fn leveldb_writebatch_create() -> *mut leveldb_writebatch_t; leveldb_writebatch_destroy(b: *mut leveldb_writebatch_t)68 pub fn leveldb_writebatch_destroy(b: *mut leveldb_writebatch_t); leveldb_writebatch_clear(b: *mut leveldb_writebatch_t)69 pub fn leveldb_writebatch_clear(b: *mut leveldb_writebatch_t); leveldb_writebatch_put(b: *mut leveldb_writebatch_t, key: *const c_char, keylen: size_t, val: *const c_char, vallen: size_t)70 pub fn leveldb_writebatch_put(b: *mut leveldb_writebatch_t, key: *const c_char, keylen: size_t, val: *const c_char, vallen: size_t); leveldb_writebatch_delete(b: *mut leveldb_writebatch_t, key: *const c_char, keylen: size_t)71 pub fn leveldb_writebatch_delete(b: *mut leveldb_writebatch_t, key: *const c_char, keylen: size_t); leveldb_writebatch_iterate( b: *mut leveldb_writebatch_t, state: *mut c_void, put: extern fn(*mut c_void, *const c_char, size_t, *const c_char, size_t), deleted: extern fn(*mut c_void, *const c_char, size_t) )72 pub fn leveldb_writebatch_iterate( 73 b: *mut leveldb_writebatch_t, 74 state: *mut c_void, 75 put: extern fn(*mut c_void, *const c_char, size_t, *const c_char, size_t), 76 deleted: extern fn(*mut c_void, *const c_char, size_t) 77 ); 78 79 // Options leveldb_options_create() -> *mut leveldb_options_t80 pub fn leveldb_options_create() -> *mut leveldb_options_t; leveldb_options_destroy(o: *mut leveldb_options_t)81 pub fn leveldb_options_destroy(o: *mut leveldb_options_t); leveldb_options_set_comparator(o: *mut leveldb_options_t, c: *mut leveldb_comparator_t)82 pub fn leveldb_options_set_comparator(o: *mut leveldb_options_t, c: *mut leveldb_comparator_t); leveldb_options_set_filter_policy(o: *mut leveldb_options_t, c: *mut leveldb_filterpolicy_t)83 pub fn leveldb_options_set_filter_policy(o: *mut leveldb_options_t, c: *mut leveldb_filterpolicy_t); leveldb_options_set_create_if_missing(o: *mut leveldb_options_t, val: c_uchar)84 pub fn leveldb_options_set_create_if_missing(o: *mut leveldb_options_t, val: c_uchar); leveldb_options_set_error_if_exists(o: *mut leveldb_options_t, val: c_uchar)85 pub fn leveldb_options_set_error_if_exists(o: *mut leveldb_options_t, val: c_uchar); leveldb_options_set_paranoid_checks(o: *mut leveldb_options_t, val: c_uchar)86 pub fn leveldb_options_set_paranoid_checks(o: *mut leveldb_options_t, val: c_uchar); leveldb_options_set_env(o: *mut leveldb_options_t, env: *mut leveldb_env_t)87 pub fn leveldb_options_set_env(o: *mut leveldb_options_t, env: *mut leveldb_env_t); leveldb_options_set_info_log(o: *mut leveldb_options_t, logger: *mut leveldb_logger_t)88 pub fn leveldb_options_set_info_log(o: *mut leveldb_options_t, logger: *mut leveldb_logger_t); leveldb_options_set_write_buffer_size(o: *mut leveldb_options_t, size: size_t)89 pub fn leveldb_options_set_write_buffer_size(o: *mut leveldb_options_t, size: size_t); leveldb_options_set_max_open_files(o: *mut leveldb_options_t, num: c_int)90 pub fn leveldb_options_set_max_open_files(o: *mut leveldb_options_t, num: c_int); leveldb_options_set_cache(o: *mut leveldb_options_t, cache: *mut leveldb_cache_t)91 pub fn leveldb_options_set_cache(o: *mut leveldb_options_t, cache: *mut leveldb_cache_t); leveldb_options_set_block_size(o: *mut leveldb_options_t, size: size_t)92 pub fn leveldb_options_set_block_size(o: *mut leveldb_options_t, size: size_t); leveldb_options_set_block_restart_interval(o: *mut leveldb_options_t, interval: c_int)93 pub fn leveldb_options_set_block_restart_interval(o: *mut leveldb_options_t, interval: c_int); leveldb_options_set_compression(o: *mut leveldb_options_t, val: Compression)94 pub fn leveldb_options_set_compression(o: *mut leveldb_options_t, val: Compression); 95 96 // Comparator leveldb_comparator_create( state: *mut c_void, destructor: extern fn(*mut c_void), compare: extern fn(*mut c_void, *const c_char, size_t, *const c_char, size_t) -> c_int, name: extern fn(*mut c_void) -> *const c_char ) -> *mut leveldb_comparator_t97 pub fn leveldb_comparator_create( 98 state: *mut c_void, 99 destructor: extern fn(*mut c_void), 100 compare: extern fn(*mut c_void, *const c_char, size_t, *const c_char, size_t) -> c_int, 101 name: extern fn(*mut c_void) -> *const c_char 102 ) -> *mut leveldb_comparator_t; leveldb_comparator_destroy(c: *mut leveldb_comparator_t)103 pub fn leveldb_comparator_destroy(c: *mut leveldb_comparator_t); 104 105 // Filter policy 106 //pub leveldb_filterpolicy_create(state: *mut c_void, /* TODO */) -> *mut leveldb_filterpolicy_t; 107 /* 108 extern leveldb_filterpolicy_t* leveldb_filterpolicy_create( 109 void* state, 110 void (*destructor)(void*), 111 char* (*create_filter)( 112 void*, 113 const char* const* key_array, const size_t* key_length_array, 114 int num_keys, 115 size_t* filter_length), 116 unsigned char (*key_may_match)( 117 void*, 118 const char* key, size_t length, 119 const char* filter, size_t filter_length), 120 const char* (*name)(void*)); 121 */ leveldb_filterpolicy_destroy(p: *mut leveldb_filterpolicy_t)122 pub fn leveldb_filterpolicy_destroy(p: *mut leveldb_filterpolicy_t); leveldb_filterpolicy_create_bloom(bits_per_key: c_int) -> *mut leveldb_filterpolicy_t123 pub fn leveldb_filterpolicy_create_bloom(bits_per_key: c_int) -> *mut leveldb_filterpolicy_t; 124 125 // Read options leveldb_readoptions_create() -> *mut leveldb_readoptions_t126 pub fn leveldb_readoptions_create() -> *mut leveldb_readoptions_t; leveldb_readoptions_destroy(o: *mut leveldb_readoptions_t)127 pub fn leveldb_readoptions_destroy(o: *mut leveldb_readoptions_t); leveldb_readoptions_set_verify_checksums(o: *mut leveldb_readoptions_t, val: c_uchar)128 pub fn leveldb_readoptions_set_verify_checksums(o: *mut leveldb_readoptions_t, val: c_uchar); leveldb_readoptions_set_fill_cache(o: *mut leveldb_readoptions_t, val: c_uchar)129 pub fn leveldb_readoptions_set_fill_cache(o: *mut leveldb_readoptions_t, val: c_uchar); leveldb_readoptions_set_snapshot(o: *mut leveldb_readoptions_t, snapshot: *const leveldb_snapshot_t)130 pub fn leveldb_readoptions_set_snapshot(o: *mut leveldb_readoptions_t, snapshot: *const leveldb_snapshot_t); 131 132 // Write options leveldb_writeoptions_create() -> *mut leveldb_writeoptions_t133 pub fn leveldb_writeoptions_create() -> *mut leveldb_writeoptions_t; leveldb_writeoptions_destroy(o: *mut leveldb_writeoptions_t)134 pub fn leveldb_writeoptions_destroy(o: *mut leveldb_writeoptions_t); leveldb_writeoptions_set_sync(o: *mut leveldb_writeoptions_t, val: c_uchar)135 pub fn leveldb_writeoptions_set_sync(o: *mut leveldb_writeoptions_t, val: c_uchar); 136 137 // Cache leveldb_cache_create_lru(capacity: size_t) -> *mut leveldb_cache_t138 pub fn leveldb_cache_create_lru(capacity: size_t) -> *mut leveldb_cache_t; leveldb_cache_destroy(c: *mut leveldb_cache_t)139 pub fn leveldb_cache_destroy(c: *mut leveldb_cache_t); 140 141 // Env leveldb_create_default_env() -> *mut leveldb_env_t142 pub fn leveldb_create_default_env() -> *mut leveldb_env_t; leveldb_env_destroy(e: *mut leveldb_env_t)143 pub fn leveldb_env_destroy(e: *mut leveldb_env_t); 144 145 // Utility leveldb_free(ptr: *mut c_void)146 pub fn leveldb_free(ptr: *mut c_void); 147 148 // Versioning leveldb_major_version() -> c_int149 pub fn leveldb_major_version() -> c_int; leveldb_minor_version() -> c_int150 pub fn leveldb_minor_version() -> c_int; 151 } 152