ite.next(function (err, key, value) {
if (err) return cb(err)
if (!key) return end(ite, cb)
key = key.toString()
var i = key.lastIndexOf('!')
var index = lexint.unpack(key.slice(i + 1), 'hex')
var j = key.lastIndexOf('!', i - 1)
var change = lexint.unpack(key.slice(j + 1, i), 'hex')
var dbKey = value.toString()
i = dbKey.lastIndexOf('!', dbKey.lastIndexOf('!') - 1)
j = dbKey.lastIndexOf('!', i - 1)
down.get(dbKey, function (err, val) {
if (err) return cb(err)
cb(null, {
change: change,
index: index,
key: dbKey.slice(j + 1, i),
value: deleted(val) ? null : val
})
})
})
// example: ÿdÿffe33ee5ÿrÿfc0148ÿsÿ01
function decodeKey(key) {
var parts = key.split('ÿ')
var revs = parts[4].split('-')
return {
'_id': parts[2],
'_rev': lexint.unpack(revs[0], 'hex') + '-' + revs[1],
'_seq': lexint.unpack(parts[6], 'hex')
}
}
function(data, enc, cb) {
var key = data.slice(self.prefix.length)
var peer = key.slice(0, key.indexOf('!'))
var seq = lexint.unpack(key.slice(peer.length+1), 'hex')
cb(null, {peer:peer, seq:seq})
}
collect(db.createKeyStream({gt: CHANGES, lt: CHANGES + '~', reverse: true, limit: 1}), function (_, keys) {
self.changes = Math.max(self.changes, keys && keys.length ? lexint.unpack(keys[0].split('!').pop(), 'hex') : 0)
if (self.id) return release()
getId(function (_, id) {
self.id = id || cuid()
release()
})
})
db.createReadStream(opts).pipe(through(function (row) {
var sp = row.key.split('!');
var doc = {
user: sp[0],
time: lexi.unpack(sp[1]),
timetext: row.value.time,
text: row.value.text
};
this.queue(JSON.stringify(doc) + '\n');
})).pipe(res);
function unpack(val) {
if (typeof val === 'undefined') throw new Error('cannot unpack undefined value')
return lexint.unpack(val, 'hex')
}
var unpack = function(n) {
return lexint.unpack(n, 'hex')
}
collect(rs, function(err, keys) {
if (err) return cb(err)
if (!keys.length) return cb(null, 0)
cb(null, lexint.unpack(keys[0].slice(keys[0].lastIndexOf('!')+1), 'hex'))
})
ite.end(function () {
if (err) return cb(err)
that.changes = key ? lexint.unpack(key.toString().slice(pf.length + 'changes!'.length).split('!')[0], 'hex') : 0
cb(null, db.db, db)
})