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增强CI的前端展示层

2024-07-23 22:00:59   221人阅读

CodeIgniter 很适合小站点应用开发，但是它自带的view功能可能会给不懂PHP的前端人员带来麻烦。 相比之下phpcms的view模板解析就强大多了，所以这里就把PHPCMS的模板解析功能剥离出来，加到PHPCMS上。

首先在CodeIgniter libraries中 增加 template_cache.php老品牌娱乐城

view source
 
print?
001<?php if (!defined(‘BASEPATH‘)) exit(‘No direct script access allowed‘);
002/**
003 *  模板解析缓存
004 */
005final class template_cache {
006   
007    public $cache_path;
008    public function __construct()
009    {
010        //$CI =& get_instance();
011        $this->cache_path = APPPATH.‘views‘;
012    }
013   
014    /**
015     * 编译模板
016     *
017     * @param $module    模块名称
018     * @param $template    模板文件名
019     * @param $istag    是否为标签模板
020     * @return unknown
021     */
022   
023    public function template_compile($module, $template, $style = ‘default‘) {
024       
025        $tplfile= APPPATH.‘views‘.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.‘.php‘;
026       
027        if (! file_exists ( $tplfile )) {
028            show_error($tplfile ,  500 ,  ‘Template does not exist(1)‘);
029        }
030       
031        $content = @file_get_contents ( $tplfile );
032 
033        $filepath = $this->cache_path.DIRECTORY_SEPARATOR.‘caches_template‘.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR;
034       
035       
036        if(!is_dir($filepath)) {
037            mkdir($filepath, 0777, true);
038        }
039        $compiledtplfile = $filepath.$template.‘.php‘;
040        $content = $this->template_parse($content);
041        $strlen = file_put_contents ( $compiledtplfile, $content );
042        chmod ( $compiledtplfile, 0777 );
043        return $strlen;
044    }
045   
046    /**
047     * 更新模板缓存
048     *
049     * @param $tplfile    模板原文件路径
050     * @param $compiledtplfile    编译完成后，写入文件名
051     * @return $strlen 长度
052     */
053    public function template_refresh($tplfile, $compiledtplfile) {
054        $str = @file_get_contents ($tplfile);
055        $str = $this->template_parse ($str);
056        $strlen = file_put_contents ($compiledtplfile, $str );
057        chmod ($compiledtplfile, 0777);
058        return $strlen;
059    }
060   
061 
062    /**
063     * 解析模板
064     *
065     * @param $str    模板内容
066     * @return ture
067     */
068    public function template_parse($str) {
069        $str = preg_replace ( "/\{template\s+(.+)\}/", "<?php include template(\\1); ?>", $str );
070        $str = preg_replace ( "/\{include\s+(.+)\}/", "<?php include \\1; ?>", $str );
071        $str = preg_replace ( "/\{view\s+(.+)\}/", "<?php \$this->load->view(\\1); ?>", $str );
072        $str = preg_replace ( "/\{php\s+(.+)\}/", "<?php \\1?>", $str );
073        //alex fix
074        $str = preg_replace ( "/\{{if\s+(.+?)\}}/", "``if \\1``", $str );
075        $str = preg_replace ( "/\{{else\}}/", "``else``", $str );
076        $str = preg_replace ( "/\{{\/if\}}/", "``/if``", $str );
077       
078        $str = preg_replace ( "/\{if\s+(.+?)\}/", "<?php if(\\1) { ?>", $str );
079        $str = preg_replace ( "/\{else\}/", "<?php } else { ?>", $str );
080        $str = preg_replace ( "/\{elseif\s+(.+?)\}/", "<?php } elseif (\\1) { ?>", $str );
081        $str = preg_replace ( "/\{\/if\}/", "<?php } ?>", $str );
082       
083        //for 循环
084        $str = preg_replace("/\{for\s+(.+?)\}/","<?php for(\\1) { ?>",$str);
085        $str = preg_replace("/\{\/for\}/","<?php } ?>",$str);
086        //++ --
087        $str = preg_replace("/\{\+\+(.+?)\}/","<?php ++\\1; ?>",$str);
088        $str = preg_replace("/\{\-\-(.+?)\}/","<?php ++\\1; ?>",$str);
089        $str = preg_replace("/\{(.+?)\+\+\}/","<?php \\1++; ?>",$str);
090        $str = preg_replace("/\{(.+?)\-\-\}/","<?php \\1--; ?>",$str);
091        //alex fix
092        $str = preg_replace ( "/\``if\s+(.+?)\``/", "{{if \\1}}", $str );
093        $str = preg_replace ( "/\``else``/", "{{else}}", $str );
094        $str = preg_replace ( "/\``\/if\``/", "{{/if}}", $str );
095       
096        $str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\}/", "<?php \$n=1;if(is_array(\\1)) foreach(\\1 AS \\2) { ?>", $str );
097        $str = preg_replace ( "/\{loop\s+(\S+)\s+(\S+)\s+(\S+)\}/", "<?php \$n=1; if(is_array(\\1)) foreach(\\1 AS \\2 => \\3) { ?>", $str );
098        $str = preg_replace ( "/\{\/loop\}/", "<?php \$n++;}unset(\$n); ?>", $str );
099        $str = preg_replace ( "/\{([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "<?php echo \\1;?>", $str );
100        $str = preg_replace ( "/\{\\$([a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff:]*\(([^{}]*)\))\}/", "<?php echo \\1;?>", $str );
101        $str = preg_replace ( "/\{(\\$[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)\}/", "<?php echo \\1;?>", $str );
102        $str = preg_replace("/\{(\\$[a-zA-Z0-9_\[\]\‘\"\$\x7f-\xff]+)\}/es", "\$this->addquote(‘<?php echo \\1;?>‘)",$str);
103        $str = preg_replace ( "/\{([A-Z_\x7f-\xff][A-Z0-9_\x7f-\xff]*)\}/s", "<?php echo \\1;?>", $str );
104        $str = preg_replace("/\{pc:(\w+)\s+([^}]+)\}/ie", "self::pc_tag(‘$1‘,‘$2‘, ‘$0‘)", $str);
105        $str = preg_replace("/\{\/pc\}/ie", "self::end_pc_tag()", $str);
106        $str = "<?php defined(‘BASEPATH‘) or exit(‘No direct script access allowed.‘); ?>" . $str;
107        return $str;
108    }
109 
110    /**
111     * 转义 // 为 /
112     *
113     * @param $var    转义的字符
114     * @return 转义后的字符
115     */
116    public function addquote($var) {
117        return str_replace ( "\\\"", "\"", preg_replace ( "/\[([a-zA-Z0-9_\-\.\x7f-\xff]+)\]/s", "[‘\\1‘]", $var ) );
118    }
119   
120    /**
121     * 解析PC标签
122     * @param string $op 操作方式
123     * @param string $data 参数
124     * @param string $html 匹配到的所有的HTML代码
125     */
126    public static function pc_tag($op, $data, $html) {
127        preg_match_all("/([a-z]+)\=[\"]?([^\"]+)[\"]?/i", stripslashes($data), $matches, PREG_SET_ORDER);
128        $arr = array(‘action‘,‘num‘,‘cache‘,‘page‘, ‘pagesize‘, ‘urlrule‘, ‘return‘, ‘start‘,‘setpages‘);
129        $tools = array(‘json‘, ‘xml‘, ‘block‘, ‘get‘);
130        $datas = array();
131        $tag_id = md5(stripslashes($html));
132        //可视化条件
133        $str_datas = ‘op=‘.$op.‘&tag_md5=‘.$tag_id;
134        foreach ($matches as $v) {
135            $str_datas .= $str_datas ? "&$v[1]=".($op == ‘block‘ && strpos($v[2], ‘$‘) === 0 ? $v[2] : urlencode($v[2])) : "$v[1]=".(strpos($v[2], ‘$‘) === 0 ? $v[2] : urlencode($v[2]));
136            if(in_array($v[1], $arr)) {
137                $$v[1] = $v[2];
138                continue;
139            }
140            $datas[$v[1]] = $v[2];
141        }
142        $str = ‘‘;
143        $setpages = isset($setpages) && intval($setpages) ? intval($setpages) : 10;
144        $num = isset($num) && intval($num) ? intval($num) : 20;
145        $cache = isset($cache) && intval($cache) ? intval($cache) : 0;
146        $return = isset($return) && trim($return) ? trim($return) : ‘data‘;
147        if (!isset($urlrule)) $urlrule = ‘‘;
148        if (!empty($cache) && !isset($page)) {
149            $str .= ‘$tag_cache_name = md5(implode(\‘&\‘,‘.self::arr_to_html($datas).‘).\‘‘.$tag_id.‘\‘);if(!$‘.$return.‘ = tpl_cache($tag_cache_name,‘.$cache.‘)){‘;
150        }
151        if (in_array($op,$tools)) {
152            switch ($op) {
153                case ‘json‘:
154                        if (isset($datas[‘url‘]) && !empty($datas[‘url‘])) {
155                            $str .= ‘$json = @file_get_contents(\‘‘.$datas[‘url‘].‘\‘);‘;
156                            $str .= ‘$‘.$return.‘ = json_decode($json, true);‘;
157                        }
158                    break;
159                   
160                case ‘block‘:
161                    $str .= ‘$block_tag = pc_base::load_app_class(\‘block_tag\‘, \‘block\‘);‘;
162                    $str .= ‘echo $block_tag->pc_tag(‘.self::arr_to_html($datas).‘);‘;
163                    break;
164            }
165        } else {
166            if (!isset($action) || empty($action)) return false;
167            if ( file_exists(APPPATH.‘libraries‘.DIRECTORY_SEPARATOR.$op.‘_tag.php‘)) {
168                $str .= ‘if(!isset($CI))$CI =& get_instance();$CI->load->library("‘.$op.‘_tag");if (method_exists($CI->‘.$op.‘_tag, \‘‘.$action.‘\‘)) {‘;   
169                if (isset($start) && intval($start)) {
170                    $datas[‘limit‘] = intval($start).‘,‘.$num;
171                } else {
172                    $datas[‘limit‘] = $num;
173                }
174                if (isset($page)) {
175                    $str .= ‘$pagesize = ‘.$num.‘;‘;
176                    $str .= ‘$page = intval(‘.$page.‘) ? intval(‘.$page.‘) : 1;if($page<=0){$page=1;}‘;
177                    $str .= ‘$offset = ($page - 1) * $pagesize;$urlrule="‘.$urlrule.‘";‘;
178                    $datas[‘limit‘] = ‘$offset.",".$pagesize‘;
179                    $datas[‘action‘] = $action;
180                    $str .= ‘$‘.$op.‘_total = $CI->‘.$op.‘_tag->count(‘.self::arr_to_html($datas).‘);‘;
181                   
182                    $str .= ‘if($‘.$op.‘_total>$pagesize){ $pages = pages($‘.$op.‘_total, $page, $pagesize, $urlrule); } else { $pages="" ;}‘;
183                }
184                $str .= ‘$‘.$return.‘ = $CI->‘.$op.‘_tag->‘.$action.‘(‘.self::arr_to_html($datas).‘);‘;
185                $str .= ‘}‘;
186            }
187        }
188        if (!empty($cache) && !isset($page)) {
189            $str .= ‘if(!empty($‘.$return.‘)){setcache($tag_cache_name, $‘.$return.‘, \‘tpl_data\‘);}‘;
190            $str .= ‘}‘;
191        }
192        return "<"."?php ".$str."?".">";
193    }
194   
195    /**
196     * PC标签结束
197     */
198    static private function end_pc_tag() {
199        return ‘<?php if(defined(\‘IN_ADMIN\‘) && !defined(\‘HTML\‘)) {if(isset($data))unset($data);echo \‘</div>\‘;}?>‘;
200    }
201   
202    /**
203     * 转换数据为HTML代码
204     * @param array $data 数组
205     */
206    private static function arr_to_html($data) {
207        if (is_array($data)) {
208            $str = ‘array(‘;
209            foreach ($data as $key=>$val) {
210                if (is_array($val)) {
211                    $str .= "‘$key‘=>".self::arr_to_html($val).",";
212                } else {
213                    if (strpos($val, ‘$‘)===0) {
214                        $str .= "‘$key‘=>$val,";
215                    } else {
216                        $str .= "‘$key‘=>‘".self::new_addslashes($val)."‘,";
217                    }
218                }
219            }
220            return $str.‘)‘;
221        }
222        return false;
223    }
224   
225    /**
226     * 返回经addslashes处理过的字符串或数组
227     * @param $string 需要处理的字符串或数组
228     * @return mixed
229     */
230    function new_addslashes($string){
231        if(!is_array($string)) return addslashes($string);
232        foreach($string as $key => $val) $string[$key] = new_addslashes($val);
233        return $string;
234    }
235}

然后在global_helper中增加一个 template函数

view source
 
print?
01if ( ! function_exists(‘template‘))
02{
03    /**
04     * 模板调用
05     *
06     * @param $module
07     * @param $template
08     * @param $istag
09     * @return unknown_type
10     */
11    function template($module = ‘expatree‘, $template = ‘index‘, $style = ‘expatree‘,$return_full_path=true) {
12        global $CI;
13        if(!isset($CI))$CI =& get_instance();
14        if(!$style) $style = ‘default‘;
15        $CI->load->library(‘template_cache‘,‘template_cache‘);
16        $template_cache = $CI->template_cache;
17        //编译模板生成地址
18        $compiledtplfile = $template_cache->cache_path.DIRECTORY_SEPARATOR.‘caches_template‘.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
19        //视图文件
20        $tplfile= APPPATH.‘views‘.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
21        if(file_exists($tplfile)) {
22            if(!file_exists($compiledtplfile) || (@filemtime($tplfile) > @filemtime($compiledtplfile))) {   
23                $template_cache->template_compile($module, $template, $style);
24            }
25        } else {
26            //如果没有就调取默认风格模板
27            $compiledtplfile = $template_cache->cache_path.DIRECTORY_SEPARATOR.‘caches_template‘.DIRECTORY_SEPARATOR.‘default‘.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template.EXT;
28            if(!file_exists($compiledtplfile) || (file_exists($tplfile) && filemtime($tplfile) > filemtime($compiledtplfile))) {
29                $template_cache->template_compile($module, $template, ‘default‘);
30            } elseif (!file_exists($tplfile)) {
31                show_error($tplfile ,  500 ,  ‘Template does not exist(0)‘);
32            }
33        }
34 
35        if($return_full_path)
36            return $compiledtplfile;
37        else
38            return ‘caches_template‘.DIRECTORY_SEPARATOR.$style.DIRECTORY_SEPARATOR.$module.DIRECTORY_SEPARATOR.$template;
39    }
40}

然后在MY_Controller.php，增加一个方法

view source
 
print?
01/**
02 * 自动模板调用
03 *
04 * @param $module
05 * @param $template
06 * @param $istag
07 * @return unknown_type
08 */
09protected function view($view_file,$page_data=false,$cache=false)
10{
11    $view_file=$this->template($this->page_data[‘controller_name‘].$this->page_data[‘module_name‘],$view_file);
12   
13    $this->load->view($view_file,$page_data);
14}

这样基本上完成了，可以直接phpcms模板语法了。

增强CI的前端展示层


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