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<?php |
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namespace League\Plates\RenderContext; |
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use League\Plates; |
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function layoutFunc() { |
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return function(FuncArgs $args) { |
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list($name, $data) = $args->args; |
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$layout = $args->template->fork($name, $data ?: []); |
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Plates\Template\setLayout($args->template, $layout); |
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return $layout; |
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}; |
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} |
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function sectionFunc() { |
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return function(FuncArgs $args) { |
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list($name) = $args->args; |
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return Plates\Template\getSections($args->template)->get($name); |
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}; |
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} |
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const START_APPEND = 0; |
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const START_PREPEND = 1; |
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const START_REPLACE = 2; |
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/** Starts the output buffering for a section, update of 0 = replace, 1 = append, 2 = prepend */ |
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function startFunc($update = START_REPLACE) { |
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return startBufferFunc(function(FuncArgs $args) use ($update) { |
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return function($contents) use ($update, $args) { |
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$name = $args->args[0]; |
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$sections = Plates\Template\getSections($args->template); |
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if ($update === START_APPEND) { |
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$sections->append($name, $contents); |
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} else if ($update === START_PREPEND) { |
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$sections->prepend($name, $contents); |
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} else { |
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$sections->add($name, $contents); |
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} |
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}; |
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}); |
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} |
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function startBufferFunc(callable $create_callback) { |
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return function(FuncArgs $args) use ($create_callback) { |
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$buffer_stack = $args->template->getContextItem('buffer_stack') ?: []; |
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ob_start(); |
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$buffer_stack[] = [ob_get_level(), $create_callback($args)]; |
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$args->template->context['buffer_stack'] = $buffer_stack; |
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}; |
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} |
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function endFunc() { |
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return function(FuncArgs $args) { |
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$buffer_stack = $args->template->getContextItem('buffer_stack') ?: []; |
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if (!count($buffer_stack)) { |
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throw new Plates\Exception\FuncException('Cannot end a section definition because no section has been started.'); |
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} |
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list($ob_level, $callback) = array_pop($buffer_stack); |
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if ($ob_level != ob_get_level()) { |
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throw new Plates\Exception\FuncException('Output buffering level does not match when section was started.'); |
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} |
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$contents = ob_get_clean(); |
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$callback($contents); |
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$args->template->context['buffer_stack'] = $buffer_stack; |
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}; |
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} |
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function insertFunc($echo = null) { |
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$echo = $echo ?: Plates\Util\phpEcho(); |
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return function(FuncArgs $args) use ($echo) { |
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list($name, $data) = $args->args; |
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$child = $args->template->fork($name, $data ?: []); |
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$echo($args->render->renderTemplate($child)); |
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}; |
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} |
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function escapeFunc($flags = ENT_COMPAT | ENT_HTML401, $encoding = 'UTF-8') { |
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return function(FuncArgs $args) use ($flags, $encoding) { |
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return htmlspecialchars($args->args[0], $flags, $encoding); |
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}; |
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} |
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function assertArgsFunc($num_required, $num_default = 0) { |
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return function(FuncArgs $args, $next) use ($num_required, $num_default) { |
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if (count($args->args) < $num_required) { |
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throw new Plates\Exception\FuncException("Func {$args->func_name} has {$num_required} argument(s)."); |
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} |
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if (count($args->args) >= $num_required + $num_default) { |
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return $next($args); |
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} |
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$args = $args->withArgs(array_merge($args->args, array_fill( |
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0, |
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$num_required + $num_default - count($args->args), |
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null |
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))); |
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return $next($args); |
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}; |
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} |
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/** Creates aliases for certain functions */ |
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function aliasNameFunc(array $aliases) { |
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return function(FuncArgs $args, $next) use ($aliases) { |
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if (!isset($aliases[$args->func_name])) { |
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return $next($args); |
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} |
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while (isset($aliases[$args->func_name])) { |
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$args = $args->withName($aliases[$args->func_name]); |
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} |
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return $next($args); |
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}; |
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} |
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/** Allows splitting of the handlers from the args name */ |
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function splitByNameFunc(array $handlers) { |
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return function(FuncArgs $args, $next) use ($handlers) { |
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$name = $args->func_name; |
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if (isset($handlers[$name])) { |
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$handler = Plates\Util\stackGroup($handlers[$name]); |
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return $handler($args, $next); |
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} |
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return $next($args); |
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}; |
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} |
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function platesFunc(array $config = []) { |
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$template_args = assertArgsFunc(1, 1); |
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$one_arg = assertArgsFunc(1); |
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return Plates\Util\stackGroup([ |
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aliasNameFunc([ |
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'e' => 'escape', |
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'__invoke' => 'escape', |
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'stop' => 'end', |
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]), |
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splitByNameFunc([ |
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'layout' => [$template_args, layoutFunc()], |
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'section' => [$one_arg, sectionFunc()], |
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'insert' => [$template_args, insertFunc()], |
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'escape' => [ |
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$one_arg, |
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isset($config['escape_flags'], $config['escape_encoding']) |
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? escapeFunc($config['escape_flags'], $config['escape_encoding']) |
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: escapeFunc() |
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], |
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'start' => [$one_arg, startFunc()], |
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'push' => [$one_arg, startFunc(START_APPEND)], |
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'unshift' => [$one_arg, startFunc(START_PREPEND)], |
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'end' => [endFunc()] |
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]) |
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]); |
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} |
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thephpleague /
plates
