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ArcanistGitCommitSymbolCommitHardpointQuery.php
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ArcanistGitCommitSymbolCommitHardpointQuery.php
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<?php
final class ArcanistGitCommitSymbolCommitHardpointQuery
extends ArcanistWorkflowGitHardpointQuery {
public function getHardpoints() {
return array(
ArcanistCommitSymbolRef::HARDPOINT_OBJECT,
);
}
protected function canLoadRef(ArcanistRef $ref) {
return ($ref instanceof ArcanistCommitSymbolRef);
}
public function loadHardpoint(array $refs, $hardpoint) {
$symbol_map = array();
foreach ($refs as $key => $ref) {
$symbol_map[$key] = $ref->getSymbol();
}
$symbol_set = array_fuse($symbol_map);
foreach ($symbol_set as $symbol) {
$this->validateSymbol($symbol);
}
$api = $this->getRepositoryAPI();
$symbol_list = implode("\n", $symbol_set);
$future = $api->newFuture('cat-file --batch-check --')
->write($symbol_list);
list($stdout) = (yield $this->yieldFuture($future));
$lines = phutil_split_lines($stdout, $retain_endings = false);
if (count($lines) !== count($symbol_set)) {
throw new Exception(
pht(
'Execution of "git cat-file --batch-check" emitted an unexpected '.
'number of lines, expected %s but got %s.',
phutil_count($symbol_set),
phutil_count($lines)));
}
$hash_map = array();
$pairs = array_combine($symbol_set, $lines);
foreach ($pairs as $symbol => $line) {
$parts = explode(' ', $line, 3);
if (count($parts) < 2) {
throw new Exception(
pht(
'Execution of "git cat-file --batch-check" emitted an '.
'unexpected line ("%s").',
$line));
}
list($hash, $type) = $parts;
// NOTE: For now, symbols which map to tags (which, in turn, map to
// commits) are ignored here.
if ($type !== 'commit') {
$hash_map[$symbol] = null;
continue;
}
$hash_map[$symbol] = $hash;
}
$results = array();
foreach ($symbol_map as $key => $symbol) {
$results[$key] = $hash_map[$symbol];
}
foreach ($results as $key => $result) {
if ($result === null) {
continue;
}
$ref = id(new ArcanistCommitRef())
->setCommitHash($result);
$results[$key] = $ref;
}
yield $this->yieldMap($results);
}
private function validateSymbol($symbol) {
if (strpos($symbol, "\n") !== false) {
throw new Exception(
pht(
'Commit symbol "%s" contains a newline. This is not a valid '.
'character in a Git commit symbol.',
addcslashes($symbol, "\\\n")));
}
}
}

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