xref: /dokuwiki/lib/exe/js.php (revision 3daf9b20cab478b0c91d02f47cc3e0de195961ae) 
1<?php
2/**
3 * DokuWiki JavaScript creator
4 *
5 * @license    GPL 2 (http://www.gnu.org/licenses/gpl.html)
6 * @author     Andreas Gohr <andi@splitbrain.org>
7 */
8
9if(!defined('DOKU_INC')) define('DOKU_INC',dirname(__FILE__).'/../../');
10if(!defined('NOSESSION')) define('NOSESSION',true); // we do not use a session or authentication here (better caching)
11if(!defined('NL')) define('NL',"\n");
12if(!defined('DOKU_DISABLE_GZIP_OUTPUT')) define('DOKU_DISABLE_GZIP_OUTPUT',1); // we gzip ourself here
13require_once(DOKU_INC.'inc/init.php');
14
15// Main (don't run when UNIT test)
16if(!defined('SIMPLE_TEST')){
17    header('Content-Type: text/javascript; charset=utf-8');
18    js_out();
19}
20
21
22// ---------------------- functions ------------------------------
23
24/**
25 * Output all needed JavaScript
26 *
27 * @author Andreas Gohr <andi@splitbrain.org>
28 */
29function js_out(){
30    global $conf;
31    global $lang;
32    global $config_cascade;
33
34    // The generated script depends on some dynamic options
35    $cache = new cache('scripts'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'],'.js');
36    $cache->_event = 'JS_CACHE_USE';
37
38    // load minified version for some files
39    $min = $conf['compress'] ? '.min' : '';
40
41    // array of core files
42    $files = array(
43                DOKU_INC."lib/scripts/jquery/jquery$min.js",
44                DOKU_INC.'lib/scripts/jquery/jquery.cookie.js',
45                DOKU_INC."lib/scripts/jquery/jquery-ui$min.js",
46                DOKU_INC."lib/scripts/jquery/jquery-migrate$min.js",
47                DOKU_INC."lib/scripts/fileuploader.js",
48                DOKU_INC."lib/scripts/fileuploaderextended.js",
49                DOKU_INC.'lib/scripts/helpers.js',
50                DOKU_INC.'lib/scripts/delay.js',
51                DOKU_INC.'lib/scripts/cookie.js',
52                DOKU_INC.'lib/scripts/script.js',
53                DOKU_INC.'lib/scripts/tw-sack.js',
54                DOKU_INC.'lib/scripts/qsearch.js',
55                DOKU_INC.'lib/scripts/tree.js',
56                DOKU_INC.'lib/scripts/index.js',
57                DOKU_INC.'lib/scripts/drag.js',
58                DOKU_INC.'lib/scripts/textselection.js',
59                DOKU_INC.'lib/scripts/toolbar.js',
60                DOKU_INC.'lib/scripts/edit.js',
61                DOKU_INC.'lib/scripts/editor.js',
62                DOKU_INC.'lib/scripts/locktimer.js',
63                DOKU_INC.'lib/scripts/linkwiz.js',
64                DOKU_INC.'lib/scripts/media.js',
65# deprecated                DOKU_INC.'lib/scripts/compatibility.js',
66# disabled for FS#1958                DOKU_INC.'lib/scripts/hotkeys.js',
67                DOKU_INC.'lib/scripts/behaviour.js',
68                DOKU_INC.'lib/scripts/page.js',
69                tpl_incdir().'script.js',
70            );
71
72    // add possible plugin scripts and userscript
73    $files   = array_merge($files,js_pluginscripts());
74    if(isset($config_cascade['userscript']['default'])){
75        $files[] = $config_cascade['userscript']['default'];
76    }
77
78    $cache_files = array_merge($files, getConfigFiles('main'));
79    $cache_files[] = __FILE__;
80
81    // check cache age & handle conditional request
82    // This may exit if a cache can be used
83    $cache_ok = $cache->useCache(array('files' => $cache_files));
84    http_cached($cache->cache, $cache_ok);
85
86    // start output buffering and build the script
87    ob_start();
88
89    // add some global variables
90    print "var DOKU_BASE   = '".DOKU_BASE."';";
91    print "var DOKU_TPL    = '".tpl_basedir()."';";
92    // FIXME: Move those to JSINFO
93    print "var DOKU_UHN    = ".((int) useHeading('navigation')).";";
94    print "var DOKU_UHC    = ".((int) useHeading('content')).";";
95
96    // load JS specific translations
97    $json = new JSON();
98    $lang['js']['plugins'] = js_pluginstrings();
99    $templatestrings = js_templatestrings();
100    if(!empty($templatestrings)) {
101        $lang['js']['template'] = $templatestrings;
102    }
103    echo 'LANG = '.$json->encode($lang['js']).";\n";
104
105    // load toolbar
106    toolbar_JSdefines('toolbar');
107
108    // load files
109    foreach($files as $file){
110        $ismin = (substr($file,-7) == '.min.js');
111        $debugjs = ($conf['allowdebug'] && strpos($file, DOKU_INC.'lib/scripts/') !== 0);
112
113        echo "\n\n/* XXXXXXXXXX begin of ".str_replace(DOKU_INC, '', $file) ." XXXXXXXXXX */\n\n";
114        if($ismin) echo "\n/* BEGIN NOCOMPRESS */\n";
115        if ($debugjs) echo "\ntry {\n";
116        js_load($file);
117        if ($debugjs) echo "\n} catch (e) {\n   logError(e, '".str_replace(DOKU_INC, '', $file)."');\n}\n";
118        if($ismin) echo "\n/* END NOCOMPRESS */\n";
119        echo "\n\n/* XXXXXXXXXX end of " . str_replace(DOKU_INC, '', $file) . " XXXXXXXXXX */\n\n";
120    }
121
122    // init stuff
123    if($conf['locktime'] != 0){
124        js_runonstart("dw_locktimer.init(".($conf['locktime'] - 60).",".$conf['usedraft'].")");
125    }
126    // init hotkeys - must have been done after init of toolbar
127# disabled for FS#1958    js_runonstart('initializeHotkeys()');
128
129    // end output buffering and get contents
130    $js = ob_get_contents();
131    ob_end_clean();
132
133    // compress whitespace and comments
134    if($conf['compress']){
135        $js = js_compress($js);
136    }
137
138    $js .= "\n"; // https://bugzilla.mozilla.org/show_bug.cgi?id=316033
139
140    http_cached_finish($cache->cache, $js);
141}
142
143/**
144 * Load the given file, handle include calls and print it
145 *
146 * @author Andreas Gohr <andi@splitbrain.org>
147 */
148function js_load($file){
149    if(!@file_exists($file)) return;
150    static $loaded = array();
151
152    $data = io_readFile($file);
153    while(preg_match('#/\*\s*DOKUWIKI:include(_once)?\s+([\w\.\-_/]+)\s*\*/#',$data,$match)){
154        $ifile = $match[2];
155
156        // is it a include_once?
157        if($match[1]){
158            $base = utf8_basename($ifile);
159            if($loaded[$base]) continue;
160            $loaded[$base] = true;
161        }
162
163        if($ifile{0} != '/') $ifile = dirname($file).'/'.$ifile;
164
165        if(@file_exists($ifile)){
166            $idata = io_readFile($ifile);
167        }else{
168            $idata = '';
169        }
170        $data  = str_replace($match[0],$idata,$data);
171    }
172    echo "$data\n";
173}
174
175/**
176 * Returns a list of possible Plugin Scripts (no existance check here)
177 *
178 * @author Andreas Gohr <andi@splitbrain.org>
179 */
180function js_pluginscripts(){
181    $list = array();
182    $plugins = plugin_list();
183    foreach ($plugins as $p){
184        $list[] = DOKU_PLUGIN."$p/script.js";
185    }
186    return $list;
187}
188
189/**
190 * Return an two-dimensional array with strings from the language file of each plugin.
191 *
192 * - $lang['js'] must be an array.
193 * - Nothing is returned for plugins without an entry for $lang['js']
194 *
195 * @author Gabriel Birke <birke@d-scribe.de>
196 */
197function js_pluginstrings() {
198    global $conf;
199    $pluginstrings = array();
200    $plugins = plugin_list();
201    foreach ($plugins as $p){
202        if (isset($lang)) unset($lang);
203        if (@file_exists(DOKU_PLUGIN."$p/lang/en/lang.php")) {
204            include DOKU_PLUGIN."$p/lang/en/lang.php";
205        }
206        if (isset($conf['lang']) && $conf['lang']!='en' && @file_exists(DOKU_PLUGIN."$p/lang/".$conf['lang']."/lang.php")) {
207            include DOKU_PLUGIN."$p/lang/".$conf['lang']."/lang.php";
208        }
209        if (isset($lang['js'])) {
210            $pluginstrings[$p] = $lang['js'];
211        }
212    }
213    return $pluginstrings;
214}
215
216function js_templatestrings() {
217    global $conf;
218    $templatestrings = array();
219    if (@file_exists(tpl_incdir()."lang/en/lang.php")) {
220        include tpl_incdir()."lang/en/lang.php";
221    }
222    if (isset($conf['lang']) && $conf['lang']!='en' && @file_exists(tpl_incdir()."lang/".$conf['lang']."/lang.php")) {
223        include tpl_incdir()."lang/".$conf['lang']."/lang.php";
224    }
225    if (isset($lang['js'])) {
226        $templatestrings[$conf['template']] = $lang['js'];
227    }
228    return $templatestrings;
229}
230
231/**
232 * Escapes a String to be embedded in a JavaScript call, keeps \n
233 * as newline
234 *
235 * @author Andreas Gohr <andi@splitbrain.org>
236 */
237function js_escape($string){
238    return str_replace('\\\\n','\\n',addslashes($string));
239}
240
241/**
242 * Adds the given JavaScript code to the window.onload() event
243 *
244 * @author Andreas Gohr <andi@splitbrain.org>
245 */
246function js_runonstart($func){
247    echo "jQuery(function(){ $func; });".NL;
248}
249
250/**
251 * Strip comments and whitespaces from given JavaScript Code
252 *
253 * This is a port of Nick Galbreath's python tool jsstrip.py which is
254 * released under BSD license. See link for original code.
255 *
256 * @author Nick Galbreath <nickg@modp.com>
257 * @author Andreas Gohr <andi@splitbrain.org>
258 * @link   http://code.google.com/p/jsstrip/
259 */
260function js_compress($s){
261    $s = ltrim($s);     // strip all initial whitespace
262    $s .= "\n";
263    $i = 0;             // char index for input string
264    $j = 0;             // char forward index for input string
265    $line = 0;          // line number of file (close to it anyways)
266    $slen = strlen($s); // size of input string
267    $lch  = '';         // last char added
268    $result = '';       // we store the final result here
269
270    // items that don't need spaces next to them
271    $chars = "^&|!+\-*\/%=\?:;,{}()<>% \t\n\r'\"[]";
272
273    $regex_starters = array("(", "=", "[", "," , ":", "!");
274
275    $whitespaces_chars = array(" ", "\t", "\n", "\r", "\0", "\x0B");
276
277    while($i < $slen){
278        // skip all "boring" characters.  This is either
279        // reserved word (e.g. "for", "else", "if") or a
280        // variable/object/method (e.g. "foo.color")
281        while ($i < $slen && (strpos($chars,$s[$i]) === false) ){
282            $result .= $s{$i};
283            $i = $i + 1;
284        }
285
286        $ch = $s{$i};
287        // multiline comments (keeping IE conditionals)
288        if($ch == '/' && $s{$i+1} == '*' && $s{$i+2} != '@'){
289            $endC = strpos($s,'*/',$i+2);
290            if($endC === false) trigger_error('Found invalid /*..*/ comment', E_USER_ERROR);
291
292            // check if this is a NOCOMPRESS comment
293            if(substr($s, $i, $endC+2-$i) == '/* BEGIN NOCOMPRESS */'){
294                $endNC = strpos($s, '/* END NOCOMPRESS */', $endC+2);
295                if($endNC === false) trigger_error('Found invalid NOCOMPRESS comment', E_USER_ERROR);
296
297                // verbatim copy contents, trimming but putting it on its own line
298                $result .= "\n".trim(substr($s, $i + 22, $endNC - ($i + 22)))."\n"; // BEGIN comment = 22 chars
299                $i = $endNC + 20; // END comment = 20 chars
300            }else{
301                $i = $endC + 2;
302            }
303            continue;
304        }
305
306        // singleline
307        if($ch == '/' && $s{$i+1} == '/'){
308            $endC = strpos($s,"\n",$i+2);
309            if($endC === false) trigger_error('Invalid comment', E_USER_ERROR);
310            $i = $endC;
311            continue;
312        }
313
314        // tricky.  might be an RE
315        if($ch == '/'){
316            // rewind, skip white space
317            $j = 1;
318            while(in_array($s{$i-$j}, $whitespaces_chars)){
319                $j = $j + 1;
320            }
321            if( in_array($s{$i-$j}, $regex_starters) ){
322                // yes, this is an re
323                // now move forward and find the end of it
324                $j = 1;
325                while($s{$i+$j} != '/'){
326                    if($s{$i+$j} == '\\') $j = $j + 2;
327                    else $j++;
328                }
329                $result .= substr($s,$i,$j+1);
330                $i = $i + $j + 1;
331                continue;
332            }
333        }
334
335        // double quote strings
336        if($ch == '"'){
337            $j = 1;
338            while( $s{$i+$j} != '"' && ($i+$j < $slen)){
339                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == '"' || $s{$i+$j+1} == '\\') ){
340                    $j += 2;
341                }else{
342                    $j += 1;
343                }
344            }
345            $string  = substr($s,$i,$j+1);
346            // remove multiline markers:
347            $string  = str_replace("\\\n",'',$string);
348            $result .= $string;
349            $i = $i + $j + 1;
350            continue;
351        }
352
353        // single quote strings
354        if($ch == "'"){
355            $j = 1;
356            while( $s{$i+$j} != "'" && ($i+$j < $slen)){
357                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == "'" || $s{$i+$j+1} == '\\') ){
358                    $j += 2;
359                }else{
360                    $j += 1;
361                }
362            }
363            $string = substr($s,$i,$j+1);
364            // remove multiline markers:
365            $string  = str_replace("\\\n",'',$string);
366            $result .= $string;
367            $i = $i + $j + 1;
368            continue;
369        }
370
371        // whitespaces
372        if( $ch == ' ' || $ch == "\r" || $ch == "\n" || $ch == "\t" ){
373            // leading spaces
374            if($i+1 < $slen && (strpos($chars,$s[$i+1]) !== false)){
375                $i = $i + 1;
376                continue;
377            }
378            // trailing spaces
379            //  if this ch is space AND the last char processed
380            //  is special, then skip the space
381            $lch = substr($result,-1);
382            if($lch && (strpos($chars,$lch) !== false)){
383                $i = $i + 1;
384                continue;
385            }
386            // else after all of this convert the "whitespace" to
387            // a single space.  It will get appended below
388            $ch = ' ';
389        }
390
391        // other chars
392        $result .= $ch;
393        $i = $i + 1;
394    }
395
396    return trim($result);
397}
398
399//Setup VIM: ex: et ts=4 :
400