RanchiMall/fcoin
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browser: ldb.

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This commit is contained in:
Christopher Jeffrey 2016-07-30 11:23:05 -07:00
parent 90c4f3dcf6
commit a03465632a
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GPG Key ID: 8962AB9DE6666BBD
2 changed files with 21 additions and 12 deletions
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30
browser/ldb.js
View File

@ -1,11 +1,12 @@
var level = require('level-js');
function DB(file) {
this.level = new level(file);
function DB(location) {
this.level = new level(location);
this.bufferKeys = false;
}
DB.prototype.open = function open(options, callback) {
this.bufferKeys = options.bufferKeys;
this.level.open(options, callback);
};
@ -38,27 +39,24 @@ DB.prototype.batch = function batch(ops, options, callback) {
};
DB.prototype.iterator = function iterator(options) {
options.keyAsBuffer = false;
return new Iterator(this, options);
};
DB.prototype.approximateSize = function approximateSize(start, end, callback) {
return this.level.approximateSize(start, end, callback);
};
DB.prototype.getProperty = function getProperty(name) {
return this.level.getProperty(name);
DB.destroy = function destroy(db, callback) {
level.destroy(db, callback);
};
function Batch(db) {
this.db = db;
this.batch = db.level.batch();
this.hasOps = false;
}
Batch.prototype.put = function(key, value) {
if (this.db.bufferKeys && Buffer.isBuffer(key))
key = key.toString('hex');
this.batch.put(key, value);
this.hasOps = true;
return this;
};
@ -66,10 +64,13 @@ Batch.prototype.del = function del(key) {
if (this.db.bufferKeys && Buffer.isBuffer(key))
key = key.toString('hex');
this.batch.del(key);
this.hasOps = true;
return this;
};
Batch.prototype.write = function write(callback) {
if (!this.hasOps)
return callback();
this.batch.write(callback);
return this;
};
@ -80,6 +81,17 @@ Batch.prototype.clear = function clear() {
};
function Iterator(db, options) {
if (db.bufferKeys) {
if (Buffer.isBuffer(options.gt))
options.gt = options.gt.toString('hex');
if (Buffer.isBuffer(options.gte))
options.gte = options.gte.toString('hex');
if (Buffer.isBuffer(options.lt))
options.lt = options.lt.toString('hex');
if (Buffer.isBuffer(options.lte))
options.lte = options.lte.toString('hex');
}
options.keyAsBuffer = false;
this.db = db;
this.iter = db.level.iterator(options);
}

3
lib/bcoin/lowlevelup.js
View File

@ -40,9 +40,6 @@ function LowlevelUp(file, options) {
this.db = new options.db(file);
if (utils.isBrowser)
this.db.bufferKeys = options.bufferKeys;
// Stay as close to the metal as possible.
// We want to make calls to C++ directly.
while (this.db.db && this.db.db.put && this.db.db !== this.db)