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<?php |
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namespace League\Plates\Util; |
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use League\Plates\Exception\ComposeException; |
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function id($multi = false) { |
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if ($multi) { |
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return function(...$args) { |
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return $args; |
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}; |
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} else { |
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return function($arg) { |
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return $arg; |
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}; |
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} |
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} |
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/** simple utility that wraps php echo which allows for stubbing out the |
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echo func for testing */ |
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function phpEcho() { |
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return function($v) { |
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echo $v; |
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}; |
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} |
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/** stack a set of functions into each other and returns the stacked func */ |
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function stack(array $funcs) { |
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return array_reduce(array_reverse($funcs), function($next, $func) { |
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return function(...$args) use ($next, $func) { |
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$args[] = $next; |
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return $func(...$args); |
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}; |
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}, function() { |
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throw new ComposeException('No handler was able to return a result.'); |
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}); |
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} |
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function stackGroup(array $funcs) { |
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$end_next = null; |
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$funcs[] = function(...$args) use (&$end_next) { |
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return $end_next(...array_slice($args, 0, -1)); |
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}; |
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$next = stack($funcs); |
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return function(...$args) use ($next, &$end_next) { |
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$end_next = end($args); |
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return $next(...array_slice($args, 0, -1)); |
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}; |
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} |
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function compose(array $funcs, $context_args = []) { |
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return function($arg) use ($funcs, $context_args) { |
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return array_reduce($funcs, function($acc, $func) use ($context_args) { |
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return $func($acc, ...$context_args); |
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}, $arg); |
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}; |
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} |
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function joinPath(array $parts, $sep = DIRECTORY_SEPARATOR) { |
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return array_reduce($parts, function($acc, $part) use ($sep) { |
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if ($acc === null) { |
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return rtrim($part, $sep); |
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} |
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return $acc . $sep . ltrim($part, $sep); |
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}, null); |
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} |
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thephpleague /
plates
