Differential D11874 Diff 37841 src/applications/diffusion/conduit/DiffusionInternalGitRawDiffQueryConduitAPIMethod.php

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src/applications/diffusion/conduit/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;
				}

				}