xref: /dokuwiki/lib/exe/js.php (revision 56bf57c61324a0954f7491ff9ee3cfe2f933654b) 
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: application/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    global $INPUT;
34
35    // decide from where to get the template
36    $tpl = trim(preg_replace('/[^\w-]+/','',$INPUT->str('t')));
37    if(!$tpl) $tpl = $conf['template'];
38
39    // The generated script depends on some dynamic options
40    $cache = new cache('scripts'.$_SERVER['HTTP_HOST'].$_SERVER['SERVER_PORT'].DOKU_BASE.$tpl,'.js');
41    $cache->_event = 'JS_CACHE_USE';
42
43    // array of core files
44    $files = array(
45                DOKU_INC.'lib/scripts/jquery/jquery.cookie.js',
46                DOKU_INC.'inc/lang/'.$conf['lang'].'/jquery.ui.datepicker.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/qsearch.js',
54                DOKU_INC.'lib/scripts/tree.js',
55                DOKU_INC.'lib/scripts/index.js',
56                DOKU_INC.'lib/scripts/textselection.js',
57                DOKU_INC.'lib/scripts/toolbar.js',
58                DOKU_INC.'lib/scripts/edit.js',
59                DOKU_INC.'lib/scripts/editor.js',
60                DOKU_INC.'lib/scripts/locktimer.js',
61                DOKU_INC.'lib/scripts/linkwiz.js',
62                DOKU_INC.'lib/scripts/media.js',
63                DOKU_INC.'lib/scripts/compatibility.js',
64# disabled for FS#1958                DOKU_INC.'lib/scripts/hotkeys.js',
65                DOKU_INC.'lib/scripts/behaviour.js',
66                DOKU_INC.'lib/scripts/page.js',
67                tpl_incdir($tpl).'script.js',
68            );
69
70    // add possible plugin scripts and userscript
71    $files   = array_merge($files,js_pluginscripts());
72    if(!empty($config_cascade['userscript']['default'])) {
73        foreach($config_cascade['userscript']['default'] as $userscript) {
74            $files[] = $userscript;
75        }
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    $json = new JSON();
90    // add some global variables
91    print "var DOKU_BASE   = '".DOKU_BASE."';";
92    print "var DOKU_TPL    = '".tpl_basedir($tpl)."';";
93    print "var DOKU_COOKIE_PARAM = " . $json->encode(
94            array(
95                 'path' => empty($conf['cookiedir']) ? DOKU_REL : $conf['cookiedir'],
96                 'secure' => $conf['securecookie'] && is_ssl()
97            )).";";
98    // FIXME: Move those to JSINFO
99    print "var DOKU_UHN    = ".((int) useHeading('navigation')).";";
100    print "var DOKU_UHC    = ".((int) useHeading('content')).";";
101
102    // load JS specific translations
103    $lang['js']['plugins'] = js_pluginstrings();
104    $templatestrings = js_templatestrings($tpl);
105    if(!empty($templatestrings)) {
106        $lang['js']['template'] = $templatestrings;
107    }
108    echo 'LANG = '.$json->encode($lang['js']).";\n";
109
110    // load toolbar
111    toolbar_JSdefines('toolbar');
112
113    // load files
114    foreach($files as $file){
115        if(!file_exists($file)) continue;
116        $ismin = (substr($file,-7) == '.min.js');
117        $debugjs = ($conf['allowdebug'] && strpos($file, DOKU_INC.'lib/scripts/') !== 0);
118
119        echo "\n\n/* XXXXXXXXXX begin of ".str_replace(DOKU_INC, '', $file) ." XXXXXXXXXX */\n\n";
120        if($ismin) echo "\n/* BEGIN NOCOMPRESS */\n";
121        if ($debugjs) echo "\ntry {\n";
122        js_load($file);
123        if ($debugjs) echo "\n} catch (e) {\n   logError(e, '".str_replace(DOKU_INC, '', $file)."');\n}\n";
124        if($ismin) echo "\n/* END NOCOMPRESS */\n";
125        echo "\n\n/* XXXXXXXXXX end of " . str_replace(DOKU_INC, '', $file) . " XXXXXXXXXX */\n\n";
126    }
127
128    // init stuff
129    if($conf['locktime'] != 0){
130        js_runonstart("dw_locktimer.init(".($conf['locktime'] - 60).",".$conf['usedraft'].")");
131    }
132    // init hotkeys - must have been done after init of toolbar
133# disabled for FS#1958    js_runonstart('initializeHotkeys()');
134
135    // end output buffering and get contents
136    $js = ob_get_contents();
137    ob_end_clean();
138
139    // strip any source maps
140    stripsourcemaps($js);
141
142    // compress whitespace and comments
143    if($conf['compress']){
144        $js = js_compress($js);
145    }
146
147    $js .= "\n"; // https://bugzilla.mozilla.org/show_bug.cgi?id=316033
148
149    http_cached_finish($cache->cache, $js);
150}
151
152/**
153 * Load the given file, handle include calls and print it
154 *
155 * @author Andreas Gohr <andi@splitbrain.org>
156 *
157 * @param string $file filename path to file
158 */
159function js_load($file){
160    if(!file_exists($file)) return;
161    static $loaded = array();
162
163    $data = io_readFile($file);
164    while(preg_match('#/\*\s*DOKUWIKI:include(_once)?\s+([\w\.\-_/]+)\s*\*/#',$data,$match)){
165        $ifile = $match[2];
166
167        // is it a include_once?
168        if($match[1]){
169            $base = utf8_basename($ifile);
170            if(array_key_exists($base, $loaded) && $loaded[$base] === true){
171                $data  = str_replace($match[0], '' ,$data);
172                continue;
173            }
174            $loaded[$base] = true;
175        }
176
177        if($ifile{0} != '/') $ifile = dirname($file).'/'.$ifile;
178
179        if(file_exists($ifile)){
180            $idata = io_readFile($ifile);
181        }else{
182            $idata = '';
183        }
184        $data  = str_replace($match[0],$idata,$data);
185    }
186    echo "$data\n";
187}
188
189/**
190 * Returns a list of possible Plugin Scripts (no existance check here)
191 *
192 * @author Andreas Gohr <andi@splitbrain.org>
193 *
194 * @return array
195 */
196function js_pluginscripts(){
197    $list = array();
198    $plugins = plugin_list();
199    foreach ($plugins as $p){
200        $list[] = DOKU_PLUGIN."$p/script.js";
201    }
202    return $list;
203}
204
205/**
206 * Return an two-dimensional array with strings from the language file of each plugin.
207 *
208 * - $lang['js'] must be an array.
209 * - Nothing is returned for plugins without an entry for $lang['js']
210 *
211 * @author Gabriel Birke <birke@d-scribe.de>
212 *
213 * @return array
214 */
215function js_pluginstrings() {
216    global $conf, $config_cascade;
217    $pluginstrings = array();
218    $plugins = plugin_list();
219    foreach($plugins as $p) {
220        $path = DOKU_PLUGIN . $p . '/lang/';
221
222        if(isset($lang)) unset($lang);
223        if(file_exists($path . "en/lang.php")) {
224            include $path . "en/lang.php";
225        }
226        foreach($config_cascade['lang']['plugin'] as $config_file) {
227            if(file_exists($config_file . $p . '/en/lang.php')) {
228                include($config_file . $p . '/en/lang.php');
229            }
230        }
231        if(isset($conf['lang']) && $conf['lang'] != 'en') {
232            if(file_exists($path . $conf['lang'] . "/lang.php")) {
233                include($path . $conf['lang'] . '/lang.php');
234            }
235            foreach($config_cascade['lang']['plugin'] as $config_file) {
236                if(file_exists($config_file . $p . '/' . $conf['lang'] . '/lang.php')) {
237                    include($config_file . $p . '/' . $conf['lang'] . '/lang.php');
238                }
239            }
240        }
241
242        if(isset($lang['js'])) {
243            $pluginstrings[$p] = $lang['js'];
244        }
245    }
246    return $pluginstrings;
247}
248
249/**
250 * Return an two-dimensional array with strings from the language file of current active template.
251 *
252 * - $lang['js'] must be an array.
253 * - Nothing is returned for template without an entry for $lang['js']
254 *
255 * @param string $tpl
256 * @return array
257 */
258function js_templatestrings($tpl) {
259    global $conf, $config_cascade;
260
261    $path = tpl_incdir() . 'lang/';
262
263    $templatestrings = array();
264    if(file_exists($path . "en/lang.php")) {
265        include $path . "en/lang.php";
266    }
267    foreach($config_cascade['lang']['template'] as $config_file) {
268        if(file_exists($config_file . $conf['template'] . '/en/lang.php')) {
269            include($config_file . $conf['template'] . '/en/lang.php');
270        }
271    }
272    if(isset($conf['lang']) && $conf['lang'] != 'en' && file_exists($path . $conf['lang'] . "/lang.php")) {
273        include $path . $conf['lang'] . "/lang.php";
274    }
275    if(isset($conf['lang']) && $conf['lang'] != 'en') {
276        if(file_exists($path . $conf['lang'] . "/lang.php")) {
277            include $path . $conf['lang'] . "/lang.php";
278        }
279        foreach($config_cascade['lang']['template'] as $config_file) {
280            if(file_exists($config_file . $conf['template'] . '/' . $conf['lang'] . '/lang.php')) {
281                include($config_file . $conf['template'] . '/' . $conf['lang'] . '/lang.php');
282            }
283        }
284    }
285
286    if(isset($lang['js'])) {
287        $templatestrings[$tpl] = $lang['js'];
288    }
289    return $templatestrings;
290}
291
292/**
293 * Escapes a String to be embedded in a JavaScript call, keeps \n
294 * as newline
295 *
296 * @author Andreas Gohr <andi@splitbrain.org>
297 *
298 * @param string $string
299 * @return string
300 */
301function js_escape($string){
302    return str_replace('\\\\n','\\n',addslashes($string));
303}
304
305/**
306 * Adds the given JavaScript code to the window.onload() event
307 *
308 * @author Andreas Gohr <andi@splitbrain.org>
309 *
310 * @param string $func
311 */
312function js_runonstart($func){
313    echo "jQuery(function(){ $func; });".NL;
314}
315
316/**
317 * Strip comments and whitespaces from given JavaScript Code
318 *
319 * This is a port of Nick Galbreath's python tool jsstrip.py which is
320 * released under BSD license. See link for original code.
321 *
322 * @author Nick Galbreath <nickg@modp.com>
323 * @author Andreas Gohr <andi@splitbrain.org>
324 * @link   http://code.google.com/p/jsstrip/
325 *
326 * @param string $s
327 * @return string
328 */
329function js_compress($s){
330    $s = ltrim($s);     // strip all initial whitespace
331    $s .= "\n";
332    $i = 0;             // char index for input string
333    $j = 0;             // char forward index for input string
334    $line = 0;          // line number of file (close to it anyways)
335    $slen = strlen($s); // size of input string
336    $lch  = '';         // last char added
337    $result = '';       // we store the final result here
338
339    // items that don't need spaces next to them
340    $chars = "^&|!+\-*\/%=\?:;,{}()<>% \t\n\r'\"[]";
341
342    // items which need a space if the sign before and after whitespace is equal.
343    // E.g. '+ ++' may not be compressed to '+++' --> syntax error.
344    $ops = "+-";
345
346    $regex_starters = array("(", "=", "[", "," , ":", "!", "&", "|");
347
348    $whitespaces_chars = array(" ", "\t", "\n", "\r", "\0", "\x0B");
349
350    while($i < $slen){
351        // skip all "boring" characters.  This is either
352        // reserved word (e.g. "for", "else", "if") or a
353        // variable/object/method (e.g. "foo.color")
354        while ($i < $slen && (strpos($chars,$s[$i]) === false) ){
355            $result .= $s{$i};
356            $i = $i + 1;
357        }
358
359        $ch = $s{$i};
360        // multiline comments (keeping IE conditionals)
361        if($ch == '/' && $s{$i+1} == '*' && $s{$i+2} != '@'){
362            $endC = strpos($s,'*/',$i+2);
363            if($endC === false) trigger_error('Found invalid /*..*/ comment', E_USER_ERROR);
364
365            // check if this is a NOCOMPRESS comment
366            if(substr($s, $i, $endC+2-$i) == '/* BEGIN NOCOMPRESS */'){
367                $endNC = strpos($s, '/* END NOCOMPRESS */', $endC+2);
368                if($endNC === false) trigger_error('Found invalid NOCOMPRESS comment', E_USER_ERROR);
369
370                // verbatim copy contents, trimming but putting it on its own line
371                $result .= "\n".trim(substr($s, $i + 22, $endNC - ($i + 22)))."\n"; // BEGIN comment = 22 chars
372                $i = $endNC + 20; // END comment = 20 chars
373            }else{
374                $i = $endC + 2;
375            }
376            continue;
377        }
378
379        // singleline
380        if($ch == '/' && $s{$i+1} == '/'){
381            $endC = strpos($s,"\n",$i+2);
382            if($endC === false) trigger_error('Invalid comment', E_USER_ERROR);
383            $i = $endC;
384            continue;
385        }
386
387        // tricky.  might be an RE
388        if($ch == '/'){
389            // rewind, skip white space
390            $j = 1;
391            while(in_array($s{$i-$j}, $whitespaces_chars)){
392                $j = $j + 1;
393            }
394            if( in_array($s{$i-$j}, $regex_starters) ){
395                // yes, this is an re
396                // now move forward and find the end of it
397                $j = 1;
398                while($s{$i+$j} != '/'){
399                    if($s{$i+$j} == '\\') $j = $j + 2;
400                    else $j++;
401                }
402                $result .= substr($s,$i,$j+1);
403                $i = $i + $j + 1;
404                continue;
405            }
406        }
407
408        // double quote strings
409        if($ch == '"'){
410            $j = 1;
411            while( $s{$i+$j} != '"' && ($i+$j < $slen)){
412                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == '"' || $s{$i+$j+1} == '\\') ){
413                    $j += 2;
414                }else{
415                    $j += 1;
416                }
417            }
418            $string  = substr($s,$i,$j+1);
419            // remove multiline markers:
420            $string  = str_replace("\\\n",'',$string);
421            $result .= $string;
422            $i = $i + $j + 1;
423            continue;
424        }
425
426        // single quote strings
427        if($ch == "'"){
428            $j = 1;
429            while( $s{$i+$j} != "'" && ($i+$j < $slen)){
430                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == "'" || $s{$i+$j+1} == '\\') ){
431                    $j += 2;
432                }else{
433                    $j += 1;
434                }
435            }
436            $string = substr($s,$i,$j+1);
437            // remove multiline markers:
438            $string  = str_replace("\\\n",'',$string);
439            $result .= $string;
440            $i = $i + $j + 1;
441            continue;
442        }
443
444        // whitespaces
445        if( $ch == ' ' || $ch == "\r" || $ch == "\n" || $ch == "\t" ){
446            $lch = substr($result,-1);
447
448            // Only consider deleting whitespace if the signs before and after
449            // are not equal and are not an operator which may not follow itself.
450            if ($i+1 < $slen && ((!$lch || $s[$i+1] == ' ')
451                || $lch != $s[$i+1]
452                || strpos($ops,$s[$i+1]) === false)) {
453                // leading spaces
454                if($i+1 < $slen && (strpos($chars,$s[$i+1]) !== false)){
455                    $i = $i + 1;
456                    continue;
457                }
458                // trailing spaces
459                //  if this ch is space AND the last char processed
460                //  is special, then skip the space
461                if($lch && (strpos($chars,$lch) !== false)){
462                    $i = $i + 1;
463                    continue;
464                }
465            }
466
467            // else after all of this convert the "whitespace" to
468            // a single space.  It will get appended below
469            $ch = ' ';
470        }
471
472        // other chars
473        $result .= $ch;
474        $i = $i + 1;
475    }
476
477    return trim($result);
478}
479
480//Setup VIM: ex: et ts=4 :
481