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ArcanistShellCompleteWorkflow.php
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ArcanistShellCompleteWorkflow.php
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<?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.
*/
/**
* Powers shell-completion scripts.
*
* @group workflow
*/
class ArcanistShellCompleteWorkflow extends ArcanistBaseWorkflow {
public function getCommandHelp() {
return phutil_console_format(<<<EOTEXT
**shell-complete** __--current__ __N__ -- [__argv__]
Supports: bash, etc.
Implements shell completion. To use shell completion, source the
appropriate script from 'resources/shell/' in your .shellrc.
EOTEXT
);
}
public function getArguments() {
return array(
'current' => array(
'help' => 'Current term in the argument list being completed.',
'param' => 'cursor_position',
),
'*' => 'argv',
);
}
public function shouldShellComplete() {
return false;
}
public function run() {
$pos = $this->getArgument('current');
$argv = $this->getArgument('argv', array());
$argc = count($argv);
if ($pos === null) {
$pos = $argc - 1;
}
// Determine which revision control system the working copy uses, so we
// can filter out commands and flags which aren't supported. If we can't
// figure it out, just return all flags/commands.
$vcs = null;
// We have to build our own because if we requiresWorkingCopy() we'll throw
// if we aren't in a .arcconfig directory. We probably still can't do much,
// but commands can raise more detailed errors.
$working_copy = ArcanistWorkingCopyIdentity::newFromPath(getcwd());
if ($working_copy->getProjectRoot()) {
$repository_api = ArcanistRepositoryAPI::newAPIFromWorkingCopyIdentity(
$working_copy);
$vcs = $repository_api->getSourceControlSystemName();
}
$arc_config = $this->getArcanistConfiguration();
if ($pos == 1) {
$workflows = $arc_config->buildAllWorkflows();
$complete = array();
foreach ($workflows as $name => $workflow) {
if (!$workflow->shouldShellComplete()) {
continue;
}
$supported = $workflow->getSupportedRevisionControlSystems();
$ok = (in_array('any', $supported)) ||
(in_array($vcs, $supported));
if (!$ok) {
continue;
}
$complete[] = $name;
}
echo implode(' ', $complete)."\n";
return 0;
} else {
$workflow = $arc_config->buildWorkflow($argv[1]);
if (!$workflow) {
return 1;
}
$arguments = $workflow->getArguments();
$prev = idx($argv, $pos - 1, null);
if (!strncmp($prev, '--', 2)) {
$prev = substr($prev, 2);
} else {
$prev = null;
}
if ($prev !== null &&
isset($arguments[$prev]) &&
isset($arguments[$prev]['param'])) {
$type = idx($arguments[$prev], 'paramtype');
switch ($type) {
case 'file':
echo "FILE\n";
break;
case 'complete':
echo implode(' ', $workflow->getShellCompletions($argv))."\n";
break;
default:
echo "ARGUMENT\n";
break;
}
return 0;
} else {
$output = array();
foreach ($arguments as $argument => $spec) {
if ($argument == '*') {
continue;
}
if ($vcs &&
isset($spec['supports']) &&
!in_array($vcs, $spec['supports'])) {
continue;
}
$output[] = '--'.$argument;
}
$cur = idx($argv, $pos, '');
$any_match = false;
foreach ($output as $possible) {
if (!strncmp($possible, $cur, strlen($cur))) {
$any_match = true;
}
}
if (!$any_match && isset($arguments['*'])) {
// TODO: the '*' specifier should probably have more details about
// whether or not it is a list of files. Since it almost always is in
// practice, assume FILE for now.
echo "FILE\n";
} else {
echo implode(' ', $output)."\n";
}
return 0;
}
}
}
}

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