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-rw-r--r--vendor/exTpl/Template.php535
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diff --git a/vendor/exTpl/Template.php b/vendor/exTpl/Template.php
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-<?php
-/*
- * Template.php - expression template parser
- *
- * Copyright (c) 2013 Elmar Ludwig
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- */
-
-namespace exTpl;
-
-require_once 'Scanner.php';
-require_once 'Node.php';
-
-/**
- * The Template class is the only externally visible API of this
- * template implementation. It can be used to create and render
- * template objects.
- */
-class Template
-{
- private static $tag_start = '{';
- private static $tag_end = '}';
- private $escape;
- private $functions;
- private $template;
-
- /**
- * Sets the delimiter strings used for the template tags, the
- * default delimiters are: $tag_start = '{', $tag_end = '}'.
- *
- * @param string $tag_start tag start marker
- * @param string $tag_end tag end marker
- */
- public static function setTagMarkers($tag_start, $tag_end)
- {
- self::$tag_start = $tag_start;
- self::$tag_end = $tag_end;
- }
-
- /**
- * Initializes a new Template instance from the given string.
- *
- * @param string $string template text
- */
- public function __construct($string)
- {
- $this->template = new ArrayNode();
- $this->functions = array(
- 'count' => function($a) { return count($a); },
- 'strlen' => function($a) { return mb_strlen($a); }
- );
- self::parseTemplate($this->template, $string, 0);
- }
-
- /**
- * Enables or disables automatic escaping for template values.
- * Currently supported strategies: NULL, 'html', 'json', 'xml'
- *
- * @param string|callable $escape escape strategy or callback
- */
- public function autoescape($escape)
- {
- if ($escape === 'html' || $escape === 'xml') {
- $this->escape = 'htmlspecialchars';
- } else if ($escape === 'json') {
- $this->escape = 'json_encode';
- } else if (is_callable($escape)) {
- $this->escape = $escape;
- } else if ($escape === NULL) {
- $this->escape = NULL;
- } else {
- throw new InvalidArgumentException("invalid escape strategy: $escape");
- }
- }
-
- /**
- * Renders the template to a string using the given array of
- * bindings to resolve symbol references inside the template.
- *
- * @param array $bindings symbol table
- *
- * @return string string representation of the template
- */
- public function render(array $bindings)
- {
- $context = new Context($bindings + $this->functions);
- $context->autoescape($this->escape);
-
- return $this->template->render($context);
- }
-
- /**
- * Skips tokens until the end of the current tag is reached.
- *
- * @param string $string template text
- * @param int $pos offset in string
- *
- * @return int new offset in the string
- */
- private static function skipTokens($string, $pos)
- {
- for ($len = strlen($string); $pos < $len &&
- substr_compare($string, self::$tag_end, $pos, strlen(self::$tag_end)); ++$pos) {
- $chr = $string[$pos];
- if ($chr === '"' || $chr === "'") {
- while (++$pos < $len && $string[$pos] !== $chr) {
- if ($string[$pos] === '\\') {
- ++$pos;
- }
- }
- }
- }
-
- return $pos;
- }
-
- /**
- * Parses a template string into a template node tree, starting
- * at the specified offset. All created nodes are added to the
- * given sequence node.
- *
- * @param ArrayNode $node template node to build
- * @param string $string string to parse
- * @param int $pos offset in string
- *
- * @return int new offset in the string
- */
- private static function parseTemplate(ArrayNode $node, $string, $pos)
- {
- $len = strlen($string);
-
- while ($pos < $len) {
- $next_pos = strpos($string, self::$tag_start, $pos);
-
- if ($next_pos === false) {
- $child = new TextNode(substr($string, $pos));
- $node->addChild($child);
- break;
- }
-
- if ($next_pos > $pos) {
- $child = new TextNode(substr($string, $pos, $next_pos - $pos));
- $node->addChild($child);
- }
-
- $pos = $next_pos + strlen(self::$tag_start);
- $next_pos = self::skipTokens($string, $pos);
- $scanner = new Scanner(substr($string, $pos, $next_pos - $pos));
- $pos = $next_pos + strlen(self::$tag_end);
-
- switch ($scanner->nextToken()) {
- case T_FOREACH:
- $scanner->nextToken();
- $expr = self::parseExpr($scanner);
- $key_name = 'index';
- $val_name = 'this';
-
- if ($scanner->tokenType() === T_AS) {
- $scanner->nextToken();
-
- if ($scanner->tokenType() !== T_STRING) {
- throw new TemplateParserException('symbol expected', $scanner);
- }
-
- $val_name = $scanner->tokenValue();
- $scanner->nextToken();
-
- if ($scanner->tokenType() === T_DOUBLE_ARROW) {
- $scanner->nextToken();
-
- if ($scanner->tokenType() !== T_STRING) {
- throw new TemplateParserException('symbol expected', $scanner);
- }
-
- $key_name = $val_name;
- $val_name = $scanner->tokenValue();
- $scanner->nextToken();
- }
- }
-
- $child = new IteratorNode($expr, $key_name, $val_name);
- $pos = self::parseTemplate($child, $string, $pos);
- $node->addChild($child);
- break;
- case T_ENDFOREACH:
- return $pos;
- case T_IF:
- $scanner->nextToken();
- $child = new ConditionNode(self::parseExpr($scanner));
- $pos = self::parseTemplate($child, $string, $pos);
- $node->addChild($child);
- break;
- case T_ELSEIF:
- $scanner->nextToken();
- $child = new ConditionNode(self::parseExpr($scanner));
- $node->addElse();
- $node->addChild($child);
- return self::parseTemplate($child, $string, $pos);
- case T_ELSE:
- $scanner->nextToken();
- $node->addElse();
- break;
- case T_ENDIF:
- return $pos;
- default:
- $child = new ExpressionNode(self::parseExpr($scanner));
- $node->addChild($child);
- }
-
- if ($scanner->tokenType() !== false) {
- throw new TemplateParserException('syntax error', $scanner);
- }
- }
-
- return $pos;
- }
-
- /**
- * value: NUMBER | STRING | SYMBOL | '(' expr ')'
- */
- private static function parseValue(Scanner $scanner)
- {
- switch ($scanner->tokenType()) {
- case T_CONSTANT_ENCAPSED_STRING:
- case T_DNUMBER:
- case T_LNUMBER:
- $result = new ConstantExpression($scanner->tokenValue());
- break;
- case T_STRING:
- $result = new SymbolExpression($scanner->tokenValue());
- break;
- case '(':
- $scanner->nextToken();
- $result = self::parseExpr($scanner);
-
- if ($scanner->tokenType() !== ')') {
- throw new TemplateParserException('missing ")"', $scanner);
- }
- break;
- default:
- throw new TemplateParserException('syntax error', $scanner);
- }
-
- $scanner->nextToken();
- return $result;
- }
-
- /**
- * function: value | function '(' ')' | function '(' expr { ',' expr } ')'
- */
- private static function parseFunction(Scanner $scanner)
- {
- $result = self::parseValue($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '(') {
- $scanner->nextToken();
- $arguments = array();
-
- if ($scanner->tokenType() !== ')') {
- $arguments[] = self::parseExpr($scanner);
-
- while ($scanner->tokenType() === ',') {
- $scanner->nextToken();
- $arguments[] = self::parseExpr($scanner);
- }
-
- if ($scanner->tokenType() !== ')') {
- throw new TemplateParserException('missing ")"', $scanner);
- }
- }
-
- $scanner->nextToken();
- $result = new FunctionExpression($result, $arguments);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * index: function | index '[' expr ']' | index '.' SYMBOL
- */
- private static function parseIndex(Scanner $scanner)
- {
- $result = self::parseFunction($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '[' || $type === '.') {
- $scanner->nextToken();
-
- if ($type === '[') {
- $expr = self::parseExpr($scanner);
-
- if ($scanner->tokenType() !== ']') {
- throw new TemplateParserException('missing "]"', $scanner);
- }
- } else if ($scanner->tokenType() === T_STRING) {
- $expr = new ConstantExpression($scanner->tokenValue());
- } else {
- throw new TemplateParserException('symbol expected', $scanner);
- }
-
- $scanner->nextToken();
- $result = new IndexExpression($result, $expr, $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * filter: index | filter '|' SYMBOL | filter '|' SYMBOL '(' expr { ',' expr } ')'
- */
- private static function parseFilter(Scanner $scanner)
- {
- $result = self::parseIndex($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '|') {
- $scanner->nextToken();
-
- if ($scanner->tokenType() !== T_STRING) {
- throw new TemplateParserException('symbol expected', $scanner);
- }
-
- $arguments = array($result);
- $symbol = new SymbolExpression($scanner->tokenValue());
- $scanner->nextToken();
-
- if ($scanner->tokenType() === '(') {
- $scanner->nextToken();
-
- if ($scanner->tokenType() !== ')') {
- $arguments[] = self::parseExpr($scanner);
-
- while ($scanner->tokenType() === ',') {
- $scanner->nextToken();
- $arguments[] = self::parseExpr($scanner);
- }
-
- if ($scanner->tokenType() !== ')') {
- throw new TemplateParserException('missing ")"', $scanner);
- }
- }
-
- $scanner->nextToken();
- }
-
- if ($symbol->name() === 'raw') {
- $result = new RawExpression($result);
- } else {
- $result = new FunctionExpression($symbol, $arguments);
- }
-
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * sign: '!' sign | '+' sign | '-' sign | filter
- */
- private static function parseSign(Scanner $scanner)
- {
- switch ($scanner->tokenType()) {
- case '!':
- $scanner->nextToken();
- $result = new NotExpression(self::parseSign($scanner));
- break;
- case '+':
- $scanner->nextToken();
- $result = self::parseSign($scanner);
- break;
- case '-':
- $scanner->nextToken();
- $result = new MinusExpression(self::parseSign($scanner));
- break;
- default:
- $result = self::parseFilter($scanner);
- }
-
- return $result;
- }
-
- /**
- * product: sign | product '*' sign | product '/' sign | product '%' sign
- */
- private static function parseProduct(Scanner $scanner)
- {
- $result = self::parseSign($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '*' || $type === '/' || $type === '%') {
- $scanner->nextToken();
- $result = new ArithExpression($result, self::parseSign($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * sum: product | sum '+' product | sum '-' product | sum '~' product
- */
- private static function parseSum(Scanner $scanner)
- {
- $result = self::parseProduct($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '+' || $type === '-' || $type === '~') {
- $scanner->nextToken();
- $result = new ArithExpression($result, self::parseProduct($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * lt_gt: sum | lt_gt '<' concat | lt_gt IS_SMALLER_OR_EQUAL concat
- * | lt_gt '>' concat | lt_gt IS_GREATER_OR_EQUAL concat
- */
- private static function parseLtGt(Scanner $scanner)
- {
- $result = self::parseSum($scanner);
- $type = $scanner->tokenType();
-
- while ($type === '<' || $type === T_IS_SMALLER_OR_EQUAL ||
- $type === '>' || $type === T_IS_GREATER_OR_EQUAL) {
- $scanner->nextToken();
- $result = new BooleanExpression($result, self::parseSum($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * cmp: lt_gt | cmp IS_EQUAL lt_gt | cmp IS_NOT_EQUAL lt_gt
- */
- private static function parseCmp(Scanner $scanner)
- {
- $result = self::parseLtGt($scanner);
- $type = $scanner->tokenType();
-
- while ($type === T_IS_EQUAL || $type === T_IS_NOT_EQUAL) {
- $scanner->nextToken();
- $result = new BooleanExpression($result, self::parseLtGt($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * and: cmp | and BOOLEAN_AND cmp
- */
- private static function parseAnd(Scanner $scanner)
- {
- $result = self::parseCmp($scanner);
- $type = $scanner->tokenType();
-
- while ($type === T_BOOLEAN_AND) {
- $scanner->nextToken();
- $result = new BooleanExpression($result, self::parseCmp($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * or: and | or BOOLEAN_OR and
- */
- private static function parseOr(Scanner $scanner)
- {
- $result = self::parseAnd($scanner);
- $type = $scanner->tokenType();
-
- while ($type === T_BOOLEAN_OR) {
- $scanner->nextToken();
- $result = new BooleanExpression($result, self::parseAnd($scanner), $type);
- $type = $scanner->tokenType();
- }
-
- return $result;
- }
-
- /**
- * expr: or | or '?' expr ':' expr | or '?' ':' expr
- */
- private static function parseExpr(Scanner $scanner)
- {
- $result = self::parseOr($scanner);
-
- if ($scanner->tokenType() === '?') {
- $scanner->nextToken();
-
- if ($scanner->tokenType() !== ':') {
- $expr = self::parseExpr($scanner);
- } else {
- $expr = $result;
- }
-
- if ($scanner->tokenType() !== ':') {
- throw new TemplateParserException('missing ":"', $scanner);
- }
-
- $scanner->nextToken();
- $result = new ConditionExpression($result, $expr, self::parseExpr($scanner));
- }
-
- return $result;
- }
-}
-
-/**
- * Exception class used to report template parse errors.
- */
-class TemplateParserException extends \Exception
-{
- public function __construct($message, $scanner)
- {
- $type = $scanner->tokenType();
- $value = is_int($type) ? $scanner->tokenValue() : $type;
-
- return parent::__construct("$message at \"$value\"");
- }
-}