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diff --git a/src/work/ArcanistWorkEngine.php b/src/work/ArcanistWorkEngine.php
--- a/src/work/ArcanistWorkEngine.php
+++ b/src/work/ArcanistWorkEngine.php
@@ -198,18 +198,73 @@
ArcanistSymbolRef::HARDPOINT_OBJECT);
$task_ref = $task_symbol->getObject();
+
if (!$task_ref) {
throw new PhutilArgumentUsageException(
pht(
'No task "%s" exists, or you do not have permission to view it.',
$symbol));
}
+ $monogram = $task_ref->getMonogram();
+ $task_name = $task_ref->getName();
+ $api = $this->getRepositoryAPI();
+
+ // Check if the branch exists
+ $existing_branches =
+ $api->execxLocal('branch --list \'%s-*\' --format \'%%(refname:short)\''
+ , $monogram);
+ $existing_branches = trim($existing_branches[0]);
+ $existing_branches = explode("\n", $existing_branches);
+ $existing_branches = array_filter($existing_branches, function ($e) {
+ return $e !== '';
+ });
+
+ $branch_name = '';
+ if (count($existing_branches) === 1) {
+ $branch_name = trim($existing_branches[0]);
+ } else if (count($existing_branches) > 1 ) {
+ // error more than one branch
+ throw new InvalidArgumentException(
+ pht(
+ "More than one branch matching task ID '%s' exists.".
+ " Use 'git checkout' instead.",
+ $monogram));
+ }
- throw new Exception(pht('TODO: Implement this workflow.'));
+ if ($branch_name !== '') {
+ $api->execxLocal('checkout %s', $branch_name);
+ } else {
+ // TODO: break this out into named function in class ArcanistGitWorkEngine
+ // e.g. sanitizeBranchName($monogram, $task_name)
+
+ // see https://git-scm.com/docs/git-check-ref-format
+ $pattern =
+ '#(^[./]+|//|/\.+|\.{2,}|@{|[/.]+$|^@$|[~^:\x00-\x20\x7F?*\[\\\\])#u';
+ $branch_name = preg_replace($pattern, '-', $task_name);
+ $branch_name = trim($branch_name, '-');
+ $branch_name = mb_convert_case($branch_name, MB_CASE_LOWER, 'UTF-8');
+ $branch_name = $monogram.'-'.$branch_name;
+ // to reduce multiple '-' to single '-'
+ $branch_name = preg_replace('#-+#', '-', $branch_name);
+ // keep length to GitHub max
+ $branch_name = rtrim(mb_substr($branch_name, 0, 244), '-');
+
+ // below should work unless in detached HEAD state??
+ $start = id($api)->getBranchName();
+ if (!$start) {
+ // test detached HEAD??
+ $start = id($api)->getWorkingCopyRevision();
+ }
+ $this->newMarker($branch_name, $start);
+ }
- $this->loadHardpoints(
- $task_ref,
- ArcanistTaskRef::HARDPOINT_REVISIONREFS);
+ return id(new ArcanistMarkerRef())
+ ->setName($branch_name)
+ ->setMarkerType(ArcanistMarkerRef::TYPE_BRANCH);
+ /* $this->loadHardpoints(
+ $task_ref,
+ ArcanistTaskRef::HARDPOINT_REVISIONREFS);
+ */
}
}

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Content licensed under Creative Commons Attribution-ShareAlike 4.0 (CC-BY-SA) unless otherwise noted; code licensed under Apache 2.0 or other open source licenses. · CC BY-SA 4.0 · Apache 2.0