public function testMoreRopeOperations()
{
$rope = new PhutilRope();
$rope->append('aaa');
$rope->append('bbb');
$rope->append('ccc');
$rope->append('rrrrddddddddd');
$rope->removeBytesFromHead(4);
$string = $rope->getAsString();
$this->assertEqual('bbcccrrrrddddddddd', $string);
$this->assertEqual(strlen($string), $rope->getByteLength());
$rope = new PhutilRope();
$rope->append('aaa');
$rope->append('bbb');
$rope->removeBytesFromHead(6);
$string = $rope->getAsString();
$this->assertEqual('', $string);
$this->assertEqual(0, $rope->getByteLength());
$rope = new PhutilRope();
$rope->append('a');
$rope->append('b');
$rope->append('c');
$rope->removeBytesFromHead(1024);
$string = $rope->getAsString();
$this->assertEqual('', $string);
$this->assertEqual(0, $rope->getByteLength());
}
public function testRopeOperations()
{
$rope = new PhutilRope();
$rope->append('aaa');
$rope->append('bbb');
$this->assertEqual(6, $rope->getByteLength());
$this->assertEqual('aaabbb', $rope->getAsString());
$rope->removeBytesFromHead(2);
$this->assertEqual(4, $rope->getByteLength());
$this->assertEqual('abbb', $rope->getAsString());
$rope->removeBytesFromHead(4);
$this->assertEqual(0, $rope->getByteLength());
$this->assertEqual('', $rope->getAsString());
}
public function testHashingIterator()
{
$path = dirname(__FILE__) . '/hashingiterator/mostlyprime.txt';
$stream = fopen($path, 'rb');
$algorithm = 'sha256';
$stream_iterator = new PhutilStreamIterator($stream);
$hashing_iterator = id(new PhutilHashingIterator($stream_iterator))->setAlgorithm($algorithm);
$rope = new PhutilRope();
foreach ($hashing_iterator as $block) {
$rope->append($block);
}
$expect_data = Filesystem::readFile($path);
$actual_data = $rope->getAsString();
$this->assertEqual($expect_data, $actual_data, pht('Data should be read correctly.'));
$expect_hash = 'd50af03db6c8b63084664f352d12bffb8f58022bdd67e3aba21f01e11c3b8939';
$single_hash = hash($algorithm, $expect_data, $raw_output = false);
$actual_hash = $hashing_iterator->getHash();
$this->assertEqual($expect_hash, $single_hash, pht('Expected hash should match freshly computed hash.'));
$this->assertEqual($expect_hash, $actual_hash, pht('Expected hash should also match iterator actual hash.'));
}
private function processLog($mode)
{
$chunks = $this->newChunkIterator();
// NOTE: Because we're going to insert new chunks, we need to stop the
// iterator once it hits the final chunk which currently exists. Otherwise,
// it may start consuming chunks we just wrote and run forever.
$last = $this->loadLastChunkInfo();
if ($last) {
$chunks->setRange(null, $last['id']);
}
$byte_limit = self::CHUNK_BYTE_LIMIT;
$rope = new PhutilRope();
$this->openTransaction();
foreach ($chunks as $chunk) {
$rope->append($chunk->getChunkDisplayText());
$chunk->delete();
while ($rope->getByteLength() > $byte_limit) {
$this->writeEncodedChunk($rope, $byte_limit, $mode);
}
}
while ($rope->getByteLength()) {
$this->writeEncodedChunk($rope, $byte_limit, $mode);
}
$this->saveTransaction();
}
