library/log4php/appenders/LoggerAppenderConsole.php
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<?php
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/**
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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * contributor license agreements. See the NOTICE file distributed with
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 * this work for additional information regarding copyright ownership.
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 * The ASF licenses this file to You under the Apache License, Version 2.0
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 * (the "License"); you may not use this file except in compliance with
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 * the License. You may obtain a copy of the License at
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 *
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 *       http://www.apache.org/licenses/LICENSE-2.0
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 *
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 * Unless required by applicable law or agreed to in writing, software
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 * See the License for the specific language governing permissions and
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 * limitations under the License.
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 */
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/**
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 * LoggerAppenderConsole appends log events either to the standard output
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 * stream (php://stdout) or the standard error stream (php://stderr).
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 *
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 * **Note**: Use this Appender with command-line php scripts. On web scripts
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 * this appender has no effects.
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 *
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 * This appender uses a layout.
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 *
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 * ## Configurable parameters: ##
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 *
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 * - **target** - the target stream: "stdout" or "stderr"
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 *
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 * @version $Revision: 1343601 $
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 * @package log4php
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 * @subpackage appenders
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 * @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
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 * @link http://logging.apache.org/log4php/docs/appenders/console.html Appender documentation
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 */
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class LoggerAppenderConsole extends LoggerAppender {
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    /** The standard otuput stream.  */
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    const STDOUT = 'php://stdout';
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    /** The standard error stream.*/
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    const STDERR = 'php://stderr';
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    /** The 'target' parameter. */
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    protected $target = self::STDOUT;
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    /**
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     * Stream resource for the target stream.
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     * @var resource
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     */
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    protected $fp = null;
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    public function activateOptions() {
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        $this->fp = fopen($this->target, 'w');
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        if (is_resource($this->fp) && $this->layout !== null) {
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            fwrite($this->fp, $this->layout->getHeader());
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        }
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        $this->closed = (bool)is_resource($this->fp) === false;
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    }
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    public function close() {
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        if ($this->closed != true) {
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            if (is_resource($this->fp) && $this->layout !== null) {
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                fwrite($this->fp, $this->layout->getFooter());
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                fclose($this->fp);
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            }
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            $this->closed = true;
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        }
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    }
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    public function append(LoggerLoggingEvent $event) {
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        if (is_resource($this->fp) && $this->layout !== null) {
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            fwrite($this->fp, $this->layout->format($event));
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        }
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    }
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    /**
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     * Sets the 'target' parameter.
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     * @param string $target
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     */
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    public function setTarget($target) {
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        $value = trim($target);
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        if ($value == self::STDOUT || strtoupper($value) == 'STDOUT') {
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            $this->target = self::STDOUT;
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        } elseif ($value == self::STDERR || strtoupper($value) == 'STDERR') {
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            $this->target = self::STDERR;
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        } else {
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            $target = var_export($target);
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            $this->warn("Invalid value given for 'target' property: [$target]. Property not set.");
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        }
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    }
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    /**
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     * Returns the value of the 'target' parameter.
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     * @return string
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     */
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    public function getTarget() {
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        return $this->target;
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    }
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}