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DiffusionInternalGitRawDiffQueryConduitAPIMethod.php
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DiffusionInternalGitRawDiffQueryConduitAPIMethod.php
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<?php
final class DiffusionInternalGitRawDiffQueryConduitAPIMethod
extends DiffusionQueryConduitAPIMethod {
public function isInternalAPI() {
return true;
}
public function getAPIMethodName() {
return 'diffusion.internal.gitrawdiffquery';
}
public function getMethodDescription() {
return pht('Internal method for getting raw diff information.');
}
protected function defineReturnType() {
return 'string';
}
protected function defineCustomParamTypes() {
return array(
'commit' => 'required string',
);
}
protected function getResult(ConduitAPIRequest $request) {
$drequest = $this->getDiffusionRequest();
$repository = $drequest->getRepository();
if (!$repository->isGit()) {
throw new Exception(
pht(
'This API method can only be called on Git repositories.'));
}
// Check if the commit has parents. We're testing to see whether it is the
// first commit in history (in which case we must use "git log") or some
// other commit (in which case we can use "git diff"). We'd rather use
// "git diff" because it has the right behavior for merge commits, but
// it requires the commit to have a parent that we can diff against. The
// first commit doesn't, so "commit^" is not a valid ref.
list($parents) = $repository->execxLocalCommand(
'log -n1 --format=%s %s',
'%P',
$request->getValue('commit'));
$use_log = !strlen(trim($parents));
if ($use_log) {
// This is the first commit so we need to use "log". We know it's not a
// merge commit because it couldn't be merging anything, so this is safe.
// NOTE: "--pretty=format: " is to disable diff output, we only want the
// part we get from "--raw".
list($raw) = $repository->execxLocalCommand(
'log -n1 -M -C -B --find-copies-harder --raw -t '.
'--pretty=format: --abbrev=40 %s',
$request->getValue('commit'));
} else {
// Otherwise, we can use "diff", which will give us output for merges.
// We diff against the first parent, as this is generally the expectation
// and results in sensible behavior.
list($raw) = $repository->execxLocalCommand(
'diff -n1 -M -C -B --find-copies-harder --raw -t '.
'--abbrev=40 %s^1 %s',
$request->getValue('commit'),
$request->getValue('commit'));
}
return $raw;
}
}

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