private function buildBinaryChange(ArcanistDiffChange $change, $old_binary)
{
$eol = $this->getEOL('git');
// In Git, when we write out a binary file move or copy, we need the
// original binary for the source and the current binary for the
// destination.
if ($old_binary) {
if ($old_binary->getOriginalFileData() !== null) {
$old_data = $old_binary->getOriginalFileData();
$old_phid = null;
} else {
$old_data = null;
$old_phid = $old_binary->getMetadata('old:binary-phid');
}
} else {
$old_data = $change->getOriginalFileData();
$old_phid = $change->getMetadata('old:binary-phid');
}
if ($old_data === null && $old_phid) {
$name = basename($change->getOldPath());
$old_data = $this->getBlob($old_phid, $name);
}
$old_length = strlen($old_data);
if ($old_data === null) {
$old_data = '';
$old_sha1 = str_repeat('0', 40);
} else {
$old_sha1 = sha1("blob {$old_length}{$old_data}");
}
$new_phid = $change->getMetadata('new:binary-phid');
$new_data = null;
if ($change->getCurrentFileData() !== null) {
$new_data = $change->getCurrentFileData();
} else {
if ($new_phid) {
$name = basename($change->getCurrentPath());
$new_data = $this->getBlob($new_phid, $name);
}
}
$new_length = strlen($new_data);
if ($new_data === null) {
$new_data = '';
$new_sha1 = str_repeat('0', 40);
} else {
$new_sha1 = sha1("blob {$new_length}{$new_data}");
}
$content = array();
$content[] = "index {$old_sha1}..{$new_sha1}" . $eol;
$content[] = "GIT binary patch" . $eol;
$content[] = "literal {$new_length}" . $eol;
$content[] = $this->emitBinaryDiffBody($new_data) . $eol;
$content[] = "literal {$old_length}" . $eol;
$content[] = $this->emitBinaryDiffBody($old_data) . $eol;
return implode('', $content);
}
