xref: /dokuwiki/lib/exe/js.php (revision ab090718d52f2360b769f039b1bf5f496f23097f) 
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{
199    global $conf;
200    $pluginstrings = array();
201    $plugins = plugin_list();
202    foreach ($plugins as $p){
203        if (isset($lang)) unset($lang);
204        if (@file_exists(DOKU_PLUGIN."$p/lang/en/lang.php")) {
205            include DOKU_PLUGIN."$p/lang/en/lang.php";
206        }
207        if (isset($conf['lang']) && $conf['lang']!='en' && @file_exists(DOKU_PLUGIN."$p/lang/".$conf['lang']."/lang.php")) {
208            include DOKU_PLUGIN."$p/lang/".$conf['lang']."/lang.php";
209        }
210        if (isset($lang['js'])) {
211            $pluginstrings[$p] = $lang['js'];
212        }
213    }
214    return $pluginstrings;
215}
216
217function js_templatestrings() {
218    global $conf;
219    $templatestrings = array();
220    if (@file_exists(tpl_incdir()."lang/en/lang.php")) {
221        include tpl_incdir()."lang/en/lang.php";
222    }
223    if (isset($conf['lang']) && $conf['lang']!='en' && @file_exists(tpl_incdir()."lang/".$conf['lang']."/lang.php")) {
224        include tpl_incdir()."lang/".$conf['lang']."/lang.php";
225    }
226    if (isset($lang['js'])) {
227        $templatestrings[$conf['template']] = $lang['js'];
228    }
229    return $templatestrings;
230}
231
232/**
233 * Escapes a String to be embedded in a JavaScript call, keeps \n
234 * as newline
235 *
236 * @author Andreas Gohr <andi@splitbrain.org>
237 */
238function js_escape($string){
239    return str_replace('\\\\n','\\n',addslashes($string));
240}
241
242/**
243 * Adds the given JavaScript code to the window.onload() event
244 *
245 * @author Andreas Gohr <andi@splitbrain.org>
246 */
247function js_runonstart($func){
248    echo "jQuery(function(){ $func; });".NL;
249}
250
251/**
252 * Strip comments and whitespaces from given JavaScript Code
253 *
254 * This is a port of Nick Galbreath's python tool jsstrip.py which is
255 * released under BSD license. See link for original code.
256 *
257 * @author Nick Galbreath <nickg@modp.com>
258 * @author Andreas Gohr <andi@splitbrain.org>
259 * @link   http://code.google.com/p/jsstrip/
260 */
261function js_compress($s){
262    $s = ltrim($s);     // strip all initial whitespace
263    $s .= "\n";
264    $i = 0;             // char index for input string
265    $j = 0;             // char forward index for input string
266    $line = 0;          // line number of file (close to it anyways)
267    $slen = strlen($s); // size of input string
268    $lch  = '';         // last char added
269    $result = '';       // we store the final result here
270
271    // items that don't need spaces next to them
272    $chars = "^&|!+\-*\/%=\?:;,{}()<>% \t\n\r'\"[]";
273
274    $regex_starters = array("(", "=", "[", "," , ":", "!");
275
276    $whitespaces_chars = array(" ", "\t", "\n", "\r", "\0", "\x0B");
277
278    while($i < $slen){
279        // skip all "boring" characters.  This is either
280        // reserved word (e.g. "for", "else", "if") or a
281        // variable/object/method (e.g. "foo.color")
282        while ($i < $slen && (strpos($chars,$s[$i]) === false) ){
283            $result .= $s{$i};
284            $i = $i + 1;
285        }
286
287        $ch = $s{$i};
288        // multiline comments (keeping IE conditionals)
289        if($ch == '/' && $s{$i+1} == '*' && $s{$i+2} != '@'){
290            $endC = strpos($s,'*/',$i+2);
291            if($endC === false) trigger_error('Found invalid /*..*/ comment', E_USER_ERROR);
292
293            // check if this is a NOCOMPRESS comment
294            if(substr($s, $i, $endC+2-$i) == '/* BEGIN NOCOMPRESS */'){
295                $endNC = strpos($s, '/* END NOCOMPRESS */', $endC+2);
296                if($endNC === false) trigger_error('Found invalid NOCOMPRESS comment', E_USER_ERROR);
297
298                // verbatim copy contents, trimming but putting it on its own line
299                $result .= "\n".trim(substr($s, $i + 22, $endNC - ($i + 22)))."\n"; // BEGIN comment = 22 chars
300                $i = $endNC + 20; // END comment = 20 chars
301            }else{
302                $i = $endC + 2;
303            }
304            continue;
305        }
306
307        // singleline
308        if($ch == '/' && $s{$i+1} == '/'){
309            $endC = strpos($s,"\n",$i+2);
310            if($endC === false) trigger_error('Invalid comment', E_USER_ERROR);
311            $i = $endC;
312            continue;
313        }
314
315        // tricky.  might be an RE
316        if($ch == '/'){
317            // rewind, skip white space
318            $j = 1;
319            while(in_array($s{$i-$j}, $whitespaces_chars)){
320                $j = $j + 1;
321            }
322            if( in_array($s{$i-$j}, $regex_starters) ){
323                // yes, this is an re
324                // now move forward and find the end of it
325                $j = 1;
326                while($s{$i+$j} != '/'){
327                    if($s{$i+$j} == '\\') $j = $j + 2;
328                    else $j++;
329                }
330                $result .= substr($s,$i,$j+1);
331                $i = $i + $j + 1;
332                continue;
333            }
334        }
335
336        // double quote strings
337        if($ch == '"'){
338            $j = 1;
339            while( $s{$i+$j} != '"' && ($i+$j < $slen)){
340                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == '"' || $s{$i+$j+1} == '\\') ){
341                    $j += 2;
342                }else{
343                    $j += 1;
344                }
345            }
346            $string  = substr($s,$i,$j+1);
347            // remove multiline markers:
348            $string  = str_replace("\\\n",'',$string);
349            $result .= $string;
350            $i = $i + $j + 1;
351            continue;
352        }
353
354        // single quote strings
355        if($ch == "'"){
356            $j = 1;
357            while( $s{$i+$j} != "'" && ($i+$j < $slen)){
358                if( $s{$i+$j} == '\\' && ($s{$i+$j+1} == "'" || $s{$i+$j+1} == '\\') ){
359                    $j += 2;
360                }else{
361                    $j += 1;
362                }
363            }
364            $string = substr($s,$i,$j+1);
365            // remove multiline markers:
366            $string  = str_replace("\\\n",'',$string);
367            $result .= $string;
368            $i = $i + $j + 1;
369            continue;
370        }
371
372        // whitespaces
373        if( $ch == ' ' || $ch == "\r" || $ch == "\n" || $ch == "\t" ){
374            // leading spaces
375            if($i+1 < $slen && (strpos($chars,$s[$i+1]) !== false)){
376                $i = $i + 1;
377                continue;
378            }
379            // trailing spaces
380            //  if this ch is space AND the last char processed
381            //  is special, then skip the space
382            $lch = substr($result,-1);
383            if($lch && (strpos($chars,$lch) !== false)){
384                $i = $i + 1;
385                continue;
386            }
387            // else after all of this convert the "whitespace" to
388            // a single space.  It will get appended below
389            $ch = ' ';
390        }
391
392        // other chars
393        $result .= $ch;
394        $i = $i + 1;
395    }
396
397    return trim($result);
398}
399
400//Setup VIM: ex: et ts=4 :
401