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diff --git a/admin/survey/minify/lib/MrClay/Cli/Arg.php b/admin/survey/minify/lib/MrClay/Cli/Arg.php
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+<?php
+
+namespace MrClay\Cli;
+
+use BadMethodCallException;
+
+/**
+ * An argument for a CLI app. This specifies the argument, what values it expects and
+ * how it's treated during validation.
+ *
+ * By default, the argument will be assumed to be an optional letter flag with no value following.
+ *
+ * If the argument may receive a value, call mayHaveValue(). If there's whitespace after the
+ * flag, the value will be returned as true instead of the string.
+ *
+ * If the argument MUST be accompanied by a value, call mustHaveValue(). In this case, whitespace
+ * is permitted between the flag and its value.
+ *
+ * Use assertFile() or assertDir() to indicate that the argument must return a string value
+ * specifying a file or directory. During validation, the value will be resolved to a
+ * full file/dir path (not necessarily existing!) and the original value will be accessible
+ * via a "*.raw" key. E.g. $cli->values['f.raw']
+ *
+ * Use assertReadable()/assertWritable() to cause the validator to test the file/dir for
+ * read/write permissions respectively.
+ *
+ * @method \MrClay\Cli\Arg mayHaveValue() Assert that the argument, if present, may receive a string value
+ * @method \MrClay\Cli\Arg mustHaveValue() Assert that the argument, if present, must receive a string value
+ * @method \MrClay\Cli\Arg assertFile() Assert that the argument's value must specify a file
+ * @method \MrClay\Cli\Arg assertDir() Assert that the argument's value must specify a directory
+ * @method \MrClay\Cli\Arg assertReadable() Assert that the specified file/dir must be readable
+ * @method \MrClay\Cli\Arg assertWritable() Assert that the specified file/dir must be writable
+ *
+ * @property-read bool mayHaveValue
+ * @property-read bool mustHaveValue
+ * @property-read bool assertFile
+ * @property-read bool assertDir
+ * @property-read bool assertReadable
+ * @property-read bool assertWritable
+ * @property-read bool useAsInfile
+ * @property-read bool useAsOutfile
+ *
+ * @author Steve Clay <steve@mrclay.org>
+ * @license http://www.opensource.org/licenses/mit-license.php  MIT License
+ */
+class Arg
+{
+    /**
+     * @return array
+     */
+    public function getDefaultSpec()
+    {
+        return array(
+            'mayHaveValue' => false,
+            'mustHaveValue' => false,
+            'assertFile' => false,
+            'assertDir' => false,
+            'assertReadable' => false,
+            'assertWritable' => false,
+            'useAsInfile' => false,
+            'useAsOutfile' => false,
+        );
+    }
+
+    /**
+     * @var array
+     */
+    protected $spec = array();
+
+    /**
+     * @var bool
+     */
+    protected $required = false;
+
+    /**
+     * @var string
+     */
+    protected $description = '';
+
+    /**
+     * @param bool $isRequired
+     */
+    public function __construct($isRequired = false)
+    {
+        $this->spec = $this->getDefaultSpec();
+        $this->required = (bool) $isRequired;
+        if ($isRequired) {
+            $this->spec['mustHaveValue'] = true;
+        }
+    }
+
+    /**
+     * Assert that the argument's value points to a writable file. When
+     * Cli::openOutput() is called, a write pointer to this file will
+     * be provided.
+     * @return Arg
+     */
+    public function useAsOutfile()
+    {
+        $this->spec['useAsOutfile'] = true;
+
+        return $this->assertFile()->assertWritable();
+    }
+
+    /**
+     * Assert that the argument's value points to a readable file. When
+     * Cli::openInput() is called, a read pointer to this file will
+     * be provided.
+     * @return Arg
+     */
+    public function useAsInfile()
+    {
+        $this->spec['useAsInfile'] = true;
+
+        return $this->assertFile()->assertReadable();
+    }
+
+    /**
+     * @return array
+     */
+    public function getSpec()
+    {
+        return $this->spec;
+    }
+
+    /**
+     * @param string $desc
+     * @return Arg
+     */
+    public function setDescription($desc)
+    {
+        $this->description = $desc;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getDescription()
+    {
+        return $this->description;
+    }
+
+    /**
+     * @return bool
+     */
+    public function isRequired()
+    {
+        return $this->required;
+    }
+
+    /**
+     * Note: magic methods declared in class PHPDOC
+     *
+     * @param string $name
+     * @param array $args
+     * @return Arg
+     * @throws BadMethodCallException
+     */
+    public function __call($name, array $args = array())
+    {
+        if (array_key_exists($name, $this->spec)) {
+            $this->spec[$name] = true;
+            if ($name === 'assertFile' || $name === 'assertDir') {
+                $this->spec['mustHaveValue'] = true;
+            }
+        } else {
+            throw new BadMethodCallException('Method does not exist');
+        }
+
+        return $this;
+    }
+
+    /**
+     * Note: magic properties declared in class PHPDOC
+     *
+     * @param string $name
+     * @return bool|null
+     */
+    public function __get($name)
+    {
+        if (array_key_exists($name, $this->spec)) {
+            return $this->spec[$name];
+        }
+
+        return null;
+    }
+}