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execx.php
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Fri, May 23, 18:23

execx.php
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<?php
/*
* Copyright 2011 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.
*/
/**
* Execute a command and capture stdout and stderr. If the command exits with
* a nonzero error code, a CommandException will be thrown. If you need to
* manually handle error conditions, use exec_manual().
*
* list ($stdout, $stderr) = execx('ls %s', $file);
*
* @param string sprintf()-style command pattern to execute.
* @param ... Arguments to sprintf pattern.
* @return array List of stdout and stderr.
*/
function execx($cmd /*, ... */) {
$args = func_get_args();
$future = newv('ExecFuture', $args);
return $future->resolvex();
}
/**
* Execute a command and capture stdout, stderr, and the return value.
*
* list ($err, $stdout, $stderr) = exec_manual('ls %s', $file);
*
* When invoking this function, you MUST **manually** handle the error
* condition. Error flows can often be simplified by using execx() instead,
* which throws an exception when it encounters an error.
*
* @param string sprintf()-style command pattern to execute.
* @param ... Arguments to sprintf pattern.
* @return array List of return code, stdout, and stderr.
*/
function exec_manual($cmd /*, ... */) {
$args = func_get_args();
if (ExecFuture::peekEchoMode()) {
ExecFuture::pushEchoMode(false);
echo " >>> \$ {$cmd} ... ";
$t_start = microtime(true);
$ef = newv('ExecFuture', $args);
$result = $ef->resolve();
$t_end = microtime(true);
$duration = number_format((int)(1000 * ($t_end - $t_start))).' ms';
echo " {$duration}\n";
ExecFuture::popEchoMode();
} else {
$ef = newv('ExecFuture', $args);
$result = $ef->resolve();
}
return $result;
}

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