464 lines
15 KiB
PHP
464 lines
15 KiB
PHP
<?php
|
||
|
||
namespace top\library\template\driver\engine;
|
||
|
||
use top\traits\Instance;
|
||
|
||
/**
|
||
* 模板标签库（支持模板继承）
|
||
* Class Template
|
||
* @package lib
|
||
*/
|
||
class Engine
|
||
{
|
||
|
||
use Instance;
|
||
|
||
/**
|
||
* @var string 左定界符
|
||
*/
|
||
private $left = '<';
|
||
|
||
/**
|
||
* @var string 右定界符
|
||
*/
|
||
private $right = '>';
|
||
|
||
/**
|
||
* @var array 标签定义
|
||
*/
|
||
protected $tags = [];
|
||
|
||
/**
|
||
* @var null 模板配置
|
||
*/
|
||
protected $config = null;
|
||
|
||
/**
|
||
* @var null 扩展标签库
|
||
*/
|
||
private $extend = [];
|
||
|
||
/**
|
||
* @var array 扩展标签库类实例
|
||
*/
|
||
private $extendInstance = [];
|
||
|
||
/**
|
||
* @var array 默认标签定义
|
||
*/
|
||
private $defaultTags = [
|
||
'php' => ['attr' => null, 'close' => 1],
|
||
'if' => ['attr' => 'condition', 'close' => 1],
|
||
'else' => ['attr' => 'condition', 'close' => 0],
|
||
'volist' => ['attr' => 'name,id,key', 'close' => 1],
|
||
'assign' => ['attr' => 'name,value', 'close' => 0]
|
||
];
|
||
|
||
/**
|
||
* 构造方法
|
||
* Engine constructor.
|
||
* @param array $config
|
||
*/
|
||
private function __construct($config = [])
|
||
{
|
||
$this->config = $config;
|
||
if (isset($this->config['left']) && $this->config['left']) {
|
||
$this->left = $this->config['left'];
|
||
}
|
||
if (isset($this->config['right']) && $this->config['right']) {
|
||
$this->right = $this->config['right'];
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 处理模板继承
|
||
* @param $template
|
||
* @return mixed
|
||
*/
|
||
private function parseExtend($template)
|
||
{
|
||
$pattern = '/' . $this->left . 'extend.*?file=[\'"](.*?)[\'"].*?\/' . $this->right . '/is';
|
||
preg_match($pattern, $template, $matches);
|
||
if (!empty($matches)) {
|
||
$blockPattern = '/' . $this->left . 'block.*?name=[\'"](.*?)[\'"]' . $this->right;
|
||
$blockPattern .= '([\s\S]*?)' . $this->left . '\/block' . $this->right . '/is';
|
||
// 获得被继承的模板内容
|
||
$file = $this->config['dir'] . $matches[1] . '.' . ltrim($this->config['ext'], '.');
|
||
$extendFileContent = null;
|
||
if (file_exists($file)) {
|
||
$extendFileContent = file_get_contents($file);
|
||
}
|
||
// 处理继承中的include标签
|
||
$tempContent = $this->parseInclude($extendFileContent);
|
||
$extendFileContent = $tempContent !== false ? $tempContent : $extendFileContent;
|
||
// 被继承模板中的块
|
||
preg_match_all($blockPattern, $extendFileContent, $extendResult);
|
||
// 继承模板中的块
|
||
preg_match_all($blockPattern, $template, $templateResult);
|
||
// 组合搜索的块数组
|
||
$search = [];
|
||
$defaultContent = [];
|
||
for ($i = 0; $i < count($extendResult[0]); $i++) {
|
||
$search[$extendResult[1][$i]] = $extendResult[0][$i];
|
||
$defaultContent[$extendResult[1][$i]] = $extendResult[2][$i];
|
||
}
|
||
// 组合替换的块数组
|
||
$replace = [];
|
||
for ($j = 0; $j < count($templateResult[0]); $j++) {
|
||
$replace[$templateResult[1][$j]] = $templateResult[2][$j];
|
||
}
|
||
// 块是否在继承模板中存在
|
||
$searchArray = [];
|
||
$replaceArray = [];
|
||
foreach ($search as $key => $value) {
|
||
$searchArray[] = $value;
|
||
if (isset($replace[$key])) {
|
||
$replaceArray[] = $replace[$key];
|
||
} else {
|
||
$replaceArray[] = $defaultContent[$key];
|
||
}
|
||
}
|
||
$template = str_replace($searchArray, $replaceArray, $extendFileContent);
|
||
}
|
||
return $template;
|
||
}
|
||
|
||
/**
|
||
* 处理include标签
|
||
* @param $template
|
||
* @return null|string|string[]
|
||
*/
|
||
private function parseInclude($template)
|
||
{
|
||
$pattern = '/' . $this->left . 'include.*?file=[\'"](.*?)[\'"].*?\/' . $this->right . '/is';
|
||
$template = preg_replace_callback($pattern, function ($result) {
|
||
$string = null;
|
||
$file = $this->config['dir'] . $result[1] . '.' . ltrim($this->config['ext'], '.');
|
||
if (file_exists($file)) {
|
||
$string = file_get_contents($file);
|
||
}
|
||
return $string;
|
||
}, $template);
|
||
// 处理多层include
|
||
if ($this->hasInclude($template)) {
|
||
$template = $this->parseInclude($template);
|
||
}
|
||
return $template;
|
||
}
|
||
|
||
/**
|
||
* 检测是否含有include
|
||
* @param $template
|
||
* @return bool
|
||
*/
|
||
private function hasInclude($template)
|
||
{
|
||
$pattern = '/' . $this->left . 'include.*?file=[\'"](.*?)[\'"].*?\/' . $this->right . '/is';
|
||
preg_match($pattern, $template, $matches);
|
||
return !empty($matches);
|
||
}
|
||
|
||
/**
|
||
* 分析参数以及函数输出
|
||
* @param $template
|
||
* @return mixed
|
||
*/
|
||
private function parseVars($template)
|
||
{
|
||
preg_match_all('/{(.*?)}/', $template, $matches);
|
||
$search = [];
|
||
$replace = [];
|
||
for ($i = 0; $i < count($matches[0]); $i++) {
|
||
$start = substr($matches[1][$i], 0, 1);
|
||
$search[] = $matches[0][$i];
|
||
if ($start == '$') {
|
||
$replace[] = '<?php echo (' . $matches[1][$i] . '); ?>';
|
||
} elseif ($start == ':') {
|
||
$replace[] = '<?php echo (' . ltrim($matches[1][$i], ':') . '); ?>';
|
||
} else {
|
||
$replace[] = $matches[0][$i];
|
||
}
|
||
}
|
||
$template = str_replace($search, $replace, $template);
|
||
return $template;
|
||
}
|
||
|
||
/**
|
||
* 外部加载扩展标签
|
||
* @param $lib
|
||
*/
|
||
public function loadTaglib($lib)
|
||
{
|
||
$this->extend[] = $lib;
|
||
}
|
||
|
||
/**
|
||
* 标签处理
|
||
* @param $template
|
||
* @return null|string|string[]
|
||
*/
|
||
private function parseTags($template)
|
||
{
|
||
foreach ($this->extend as $lib) {
|
||
$this->extendInstance[$lib] = $object = new $lib;
|
||
foreach ($object->tags as $name => $tag) {
|
||
if (!isset($this->tags[$name]) && !isset($this->defaultTags[$name])) {
|
||
$this->tags[$name] = $tag;
|
||
}
|
||
}
|
||
}
|
||
$tags = array_merge($this->defaultTags, $this->tags);
|
||
return $this->_parseTags($template, $tags);
|
||
}
|
||
|
||
/**
|
||
* 获取标签处理结果
|
||
* @param $method
|
||
* @param $tag
|
||
* @param string $content
|
||
* @return null
|
||
*/
|
||
private function getTagParseResult($method, $tag, $content = '')
|
||
{
|
||
if (method_exists($this, $method)) {
|
||
return $this->{$method}($tag, $content);
|
||
} else {
|
||
foreach ($this->extendInstance as $item) {
|
||
if (method_exists($item, $method)) {
|
||
return $item->{$method}($tag, $content);
|
||
}
|
||
}
|
||
return null;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 进行标签处理
|
||
* @param $template
|
||
* @param $tags
|
||
* @return null|string|string[]
|
||
*/
|
||
private function _parseTags($template, $tags)
|
||
{
|
||
foreach ($tags as $name => $item) {
|
||
$pattern = '/' . $this->left . '(?:(' . $name . ')\b(?>[^' . $this->right . ']*)|\/(' . $name . '))';
|
||
$pattern .= $this->right . '/is';
|
||
if ($item['close']) {
|
||
preg_match_all($pattern, $template, $matches, PREG_SET_ORDER | PREG_OFFSET_CAPTURE);
|
||
$nodes = [];
|
||
if (!empty($matches)) {
|
||
// 将匹配结果组合为成对数组
|
||
$start = [];
|
||
foreach ($matches as $match) {
|
||
// 为空则为结束标签
|
||
if ($match[1][0] == '') {
|
||
$tag = array_pop($start);
|
||
$nodes[$match[0][1]] = [
|
||
'name' => $name,
|
||
'start' => $tag[1],
|
||
'end' => $match[0][1],
|
||
'start_str' => $tag[0],
|
||
'end_str' => $match[0][0],
|
||
];
|
||
} else {
|
||
$start[] = $match[0];
|
||
}
|
||
}
|
||
unset($matches, $start);
|
||
krsort($nodes);
|
||
|
||
if (!empty($nodes)) {
|
||
$nodes = array_merge($nodes, []);
|
||
$cut = '<!--CONTENT-->';
|
||
$method = '_' . $name;
|
||
$startArray = [];
|
||
foreach ($nodes as $pos => $node) {
|
||
$attr = $item['attr'] ? $this->getAttr($node['start_str'], explode(',', $item['attr'])) : [];
|
||
// 得到准备替换的值
|
||
$replace = explode($cut, $this->getTagParseResult($method, $attr, $cut));
|
||
$replace = [
|
||
(isset($replace[0])) ? $replace[0] : [],
|
||
(isset($replace[1])) ? $replace[1] : [],
|
||
];
|
||
while ($startArray) {
|
||
$begin = end($startArray);
|
||
// 如果当前结束位置大于最后一个开始标签的位置，则跳过，直接去替换这个结束标签
|
||
if ($node['end'] > $begin['start']) {
|
||
break;
|
||
} else {
|
||
// 否则先替换掉这个标签后面的所有开始标签
|
||
$begin = array_pop($startArray);
|
||
$template = substr_replace($template, $begin['string'], $begin['start'], $begin['length']);
|
||
}
|
||
}
|
||
$template = substr_replace($template, $replace[1], $node['end'], strlen($node['end_str']));
|
||
$startArray[] = [
|
||
'start' => $node['start'],
|
||
'length' => strlen($node['start_str']),
|
||
'string' => $replace[0]
|
||
];
|
||
}
|
||
// 替换掉最后入栈，未进入while循环的开始标签
|
||
while ($startArray) {
|
||
$begin = array_pop($startArray);
|
||
$template = substr_replace($template, $begin['string'], $begin['start'], $begin['length']);
|
||
}
|
||
}
|
||
}
|
||
} else { // 自闭合标签处理
|
||
$template = preg_replace_callback($pattern, function ($matches) use ($item) {
|
||
$method = '_' . $matches[1];
|
||
$attr = $item['attr'] ? $this->getAttr($matches[0], explode(',', $item['attr'])) : [];
|
||
return $this->getTagParseResult($method, $attr);
|
||
}, $template);
|
||
}
|
||
}
|
||
return preg_replace('/\?>([\r|\n|\s]*?)<\?php/is', '', $template);
|
||
}
|
||
|
||
/**
|
||
* 获取属性
|
||
* @param $string
|
||
* @param array $tags
|
||
* @return array
|
||
*/
|
||
private function getAttr($string, $tags = [])
|
||
{
|
||
$attr = [];
|
||
$attrPattern = '/[ +](.*?)=[\'"](.*?)[\'"]/is';
|
||
preg_match_all($attrPattern, $string, $result);
|
||
if (isset($result[0]) && !empty($result[0])) {
|
||
foreach ($result[1] as $key => $value) {
|
||
$name = trim($value, ' ');
|
||
if (in_array($name, $tags)) {
|
||
$attr[$name] = $result[2][$key];
|
||
}
|
||
}
|
||
}
|
||
return $attr;
|
||
}
|
||
|
||
/**
|
||
* 处理raw标签
|
||
* @param $template
|
||
* @return null|string|string[]
|
||
*/
|
||
private function parseRaw($template)
|
||
{
|
||
$pattern = '/' . $this->left . 'raw' . $this->right . '([\s\S]*?)';
|
||
$pattern .= $this->left . '\/raw' . $this->right . '/is';
|
||
$template = preg_replace_callback($pattern, function ($matches) {
|
||
return str_replace([
|
||
$this->left, $this->right,
|
||
'{', '}'
|
||
], [
|
||
'<!RAW--', '--RAW>',
|
||
'<!PARAM--', '--PARAM>'
|
||
], $matches[1]);
|
||
}, $template);
|
||
return $template;
|
||
}
|
||
|
||
/**
|
||
* 还原raw
|
||
* @param $template
|
||
* @return mixed
|
||
*/
|
||
public function returnRaw($template)
|
||
{
|
||
$template = str_replace([
|
||
'<!RAW--', '--RAW>',
|
||
'<!PARAM--', '--PARAM>'
|
||
], [
|
||
$this->left, $this->right,
|
||
'{', '}'
|
||
], $template);
|
||
return $template;
|
||
}
|
||
|
||
/**
|
||
* php标签开始
|
||
* @param $tag
|
||
* @param $content
|
||
* @return string
|
||
*/
|
||
private function _php($tag, $content)
|
||
{
|
||
return '<?php ' . $content . ' ?>';
|
||
}
|
||
|
||
/**
|
||
* if标签
|
||
* @param $tag
|
||
* @param $content
|
||
* @return string
|
||
*/
|
||
private function _if($tag, $content)
|
||
{
|
||
$parse = '<?php if (' . $tag['condition'] . '): ?>';
|
||
$parse .= $content;
|
||
$parse .= '<?php echo ' . $tag['condition'] . '; endif; ?>';
|
||
return $parse;
|
||
}
|
||
|
||
/**
|
||
* else标签
|
||
* @param $tag
|
||
* @return string
|
||
*/
|
||
private function _else($tag)
|
||
{
|
||
if (isset($tag['condition'])) {
|
||
$parse = '<?php elseif (' . $tag['condition'] . '): ?>';
|
||
} else {
|
||
$parse = '<?php else: ?>';
|
||
}
|
||
return $parse;
|
||
}
|
||
|
||
/**
|
||
* volist标签
|
||
* @param $tag
|
||
* @param $content
|
||
* @return string
|
||
*/
|
||
private function _volist($tag, $content)
|
||
{
|
||
$parse = '<?php ' . (isset($tag['key']) ? '$' . $tag['key'] . ' = 0; ' : '');
|
||
$parse .= 'foreach($' . $tag['name'] . ' as ' . (isset($tag['index']) ? '$' . $tag['index'] . '=>' : '') . '$' . $tag['id'] . '): ';
|
||
$parse .= (isset($tag['key']) ? '$' . $tag['key'] . '++;' : '') . ' ?>';
|
||
$parse .= $content;
|
||
$parse .= '<?php endforeach; ?>';
|
||
return $parse;
|
||
}
|
||
|
||
private function _assign($tag)
|
||
{
|
||
$parse = '<?php $' . $tag['name'] . ' = ' . (is_numeric($tag['value']) ? $tag['value'] : '\'' . $tag['value'] . '\'') . '; ?>';
|
||
return $parse;
|
||
}
|
||
|
||
/**
|
||
* 获取编译后的内容
|
||
* @param $template
|
||
* @return mixed|null|string|string[]
|
||
*/
|
||
public function compile($template)
|
||
{
|
||
// 处理raw标签
|
||
$template = $this->parseRaw($template);
|
||
// 处理模板继承标签
|
||
$template = $this->parseExtend($template);
|
||
// 处理include标签
|
||
$template = $this->parseInclude($template);
|
||
// 处理变量以及函数
|
||
$template = $this->parseVars($template);
|
||
// 处理定义的标签
|
||
$template = $this->parseTags($template);
|
||
|
||
return $template;
|
||
}
|
||
|
||
}
|