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by Auke
62:42
created

template::run()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 8

Duplication

Lines 0
Ratio 0 %

Code Coverage

Tests 0
CRAP Score 6

Importance

Changes 0
Metric Value
cc 2
nc 2
nop 2
dl 0
loc 8
ccs 0
cts 4
cp 0
crap 6
rs 10
c 0
b 0
f 0
1
<?php
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namespace arc;
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class template
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{
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    /**
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     * This method replaces {$key} entries in a string with the value of that key in an arguments list
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     * If the key isn't in the arguments array, it will remain in the returned string as-is.
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     * The arguments list may be an object or an array and the values may be basic types or callable.
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     * In the latter case, the key will be substituted with the return value of the callable. The callable
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     * is called with the key matched.
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     * <code>
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     *   $parsedTemplate = \arc\template::substitute( 'Hello {$world} {$foo}', [ 'world' => 'World!' ] );
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     *   // => 'Hello World! {$foo}'
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     *</code>
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     * @param string $template
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     * @param array $arguments
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     * @return string
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     */
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    public static function substitute($template, $arguments)
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    {
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        if (is_object($arguments) && !($arguments instanceof \ArrayObject )) {
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            $arguments = get_object_vars( $arguments );
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        }
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        $regex = '\{\$(' . join( array_keys( (array) $arguments ), '|' ) . ')\}';
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        return preg_replace_callback( '/'.$regex.'/', function ($matches) use ($arguments) {
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            $argument = $arguments[ $matches[1] ];
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            if (is_callable( $argument )) {
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                $argument = call_user_func( $argument, $matches[1] );
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            }
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            return $argument;
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        }, $template );
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    }
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    /**
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     * This method is identical to \arc\template::substitute but it removes any keys left over.
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     * <code>
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     *   $parsedTemplate = \arc\template::substituteAll( 'Hello {$world} {$foo}', [ 'world' => 'World!' ] );
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     *   // => 'Hello World! '
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     *</code>
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     * @param string $template
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     * @param array $arguments
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     * @return string
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     */
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    public static function substituteAll($template, $arguments)
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    {
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        return preg_replace('/\{\$.*\}/', '', self::substitute( $template, $arguments ) );
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    }
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}
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