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diff --git a/src/workflow/alias/ArcanistAliasWorkflow.php b/src/workflow/alias/ArcanistAliasWorkflow.php
index 2afa45ba..7a1704e5 100644
--- a/src/workflow/alias/ArcanistAliasWorkflow.php
+++ b/src/workflow/alias/ArcanistAliasWorkflow.php
@@ -1,153 +1,153 @@
<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Show which revision or revisions are in the working copy.
*
* @group workflow
*/
final class ArcanistAliasWorkflow extends ArcanistBaseWorkflow {
public function getCommandHelp() {
return phutil_console_format(<<<EOTEXT
**alias**
**alias** __command__
**alias** __command__ __target__ -- [__options__]
Supports: cli
Create an alias from __command__ to __target__ (optionally, with
__options__). For example:
arc alias fpatch patch -- --force
...will create a new 'arc' command, 'arc fpatch', which invokes
'arc patch --force ...' when run. NOTE: use "--" before specifying
options!
You can not overwrite builtins, including 'alias' itself. The builtin
will always execute, even if it was added after your alias.
To remove an alias, run:
arc alias fpatch
Without any arguments, 'arc alias' will list aliases.
EOTEXT
);
}
public function getArguments() {
return array(
'*' => 'argv',
);
}
public static function getAliases() {
$config = self::readUserConfigurationFile();
- return idx($config, 'aliases');
+ return idx($config, 'aliases', array());
}
private function writeAliases(array $aliases) {
$config = self::readUserConfigurationFile();
$config['aliases'] = $aliases;
self::writeUserConfigurationFile($config);
}
public function run() {
$aliases = self::getAliases();
$argv = $this->getArgument('argv');
if (count($argv) == 0) {
if ($aliases) {
foreach ($aliases as $alias => $binding) {
echo phutil_console_format(
"**%s** %s\n",
$alias,
implode(' ' , $binding));
}
} else {
echo "You haven't defined any aliases yet.\n";
}
} else if (count($argv) == 1) {
if (empty($aliases[$argv[0]])) {
echo "No alias '{$argv[0]}' to remove.\n";
} else {
echo phutil_console_format(
"'**arc %s**' is currently aliased to '**arc %s**'.",
$argv[0],
implode(' ', $aliases[$argv[0]]));
$ok = phutil_console_confirm('Delete this alias?');
if ($ok) {
$was = implode(' ', $aliases[$argv[0]]);
unset($aliases[$argv[0]]);
$this->writeAliases($aliases);
echo "Unaliased '{$argv[0]}' (was '{$was}').\n";
} else {
throw new ArcanistUserAbortException();
}
}
} else {
$arc_config = $this->getArcanistConfiguration();
if ($arc_config->buildWorkflow($argv[0])) {
throw new ArcanistUsageException(
"You can not create an alias for '{$argv[0]}' because it is a ".
"builtin command. 'arc alias' can only create new commands.");
}
$aliases[$argv[0]] = array_slice($argv, 1);
echo phutil_console_format(
"Aliased '**arc %s**' to '**arc %s**'.\n",
$argv[0],
implode(' ', $aliases[$argv[0]]));
$this->writeAliases($aliases);
}
return 0;
}
public static function resolveAliases(
$command,
ArcanistConfiguration $config,
array $argv) {
$aliases = ArcanistAliasWorkflow::getAliases();
if (!isset($aliases[$command])) {
return array(null, $argv);
}
$new_command = head($aliases[$command]);
$workflow = $config->buildWorkflow($new_command);
if (!$workflow) {
return array(null, $argv);
}
$alias_argv = array_slice($aliases[$command], 1);
foreach ($alias_argv as $alias_arg) {
if (!in_array($alias_arg, $argv)) {
array_unshift($argv, $alias_arg);
}
}
return array($new_command, $argv);
}
}

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