git.roojs.org Git - roojspacker/blob - src/jsdoc/Packer.vala

   1
   2 /**
   3  * @namespace JSDOC
   4  * @class  Packer
   5  * Create a new packer
   6  *
   7  * Use with pack.js
   8  *
   9  *
  10  * Usage:
  11  * <code>
  12  *
  13
  14 var x = new  JSON.Packer(target, debugTarget);
  15
  16 x.files = an array of files
  17 x.srcfiles = array of files (that list other files...) << not supported?
  18 x.target = "output.pathname.js"
  19 x.debugTarget = "output.pathname.debug.js"
  20
  21
  22
  23 x.pack();  // writes files  etc..
  24
  25  *</code>
  26  *
  27  * Notes for improving compacting:
  28  *  if you add a jsdoc comment
  29  * <code>
  30  * /**
  31  *   eval:var:avarname
  32  *   eval:var:bvarname
  33  *   ....
  34  * </code>
  35  * directly before an eval statement, it will compress all the code around the eval,
  36  * and not rename the variables 'avarname'
  37  *
  38  * Dont try running this on a merged uncompressed large file - it's used to be horrifically slow. not sure about now..
  39  * Best to use lot's of small classes, and use it to merge, as it will cache the compaction
  40  *
  41  *
  42  *
  43  * Notes for translation
  44  *  - translation relies on you using double quotes for strings if they need translating
  45  *  - single quoted strings are ignored.
  46  *
  47  * Generation of indexFiles
  48  *   - translateIndex = the indexfile
  49  *
  50  *
  51  *
  52  *
  53
  54  */
  55 namespace JSDOC
  56 {
  57         public errordomain PackerError {
  58             ArgumentError
  59     }
  60
  61         public class Packer : Object
  62         {
  63                 /**
  64                 * @cfg {String} target to write files to - must be full path.
  65                 */
  66                 string target = "";
  67                 GLib.FileOutputStream targetStream = null;
  68                 /**
  69                  * @cfg {String} debugTarget target to write files debug version to (uncompacted)- must be full path.
  70                  */
  71                 string targetDebug = "";
  72
  73
  74                 GLib.FileOutputStream targetDebugStream  = null;
  75                 /**
  76                  * @cfg {String} tmpDir  (optional) where to put the temporary files.
  77                  *      if you set this, then files will not be cleaned up
  78                  *
  79                  *  at present we need tmpfiles - as we compile multiple files into one.
  80                  *  we could do this in memory now, as I suspect vala will not be as bad as javascript for leakage...
  81                  *
  82                  */
  83                 public string tmpDir = "/tmp";  // FIXME??? in ctor?
  84
  85
  86
  87                 /**
  88                  * @cfg {Boolean} cleanup  (optional) clean up temp files after done -
  89                  *    Defaults to false if you set tmpDir, otherwise true.
  90                  */
  91                 public bool cleanup =  false;
  92
  93
  94                 /**
  95                  * @cfg {Boolean} keepWhite (optional) do not remove white space in output.
  96                  *    usefull for debugging compressed files.
  97                  */
  98
  99                 public bool keepWhite =  false;
 100
 101                 /**
 102                  * @cfg {Boolean} skipScope (optional) skip Scope parsing and replacement.
 103                  *    usefull for debugging...
 104                  */
 105
 106                 public bool skipScope = false;
 107
 108
 109                 /**
 110                  * @cfg {Boolean} dumpTokens (optional) read the first file and dump the tokens.
 111                  *    usefull for debugging...
 112                  */
 113
 114                 public bool dumpTokens = false;
 115
 116                 // list of files to compile...
 117                 Gee.ArrayList<string> files;
 118
 119                 /**
 120                 * @cfg activeFile ??? used???
 121                 */
 122
 123                 public string activeFile = "";
 124
 125
 126                 /**
 127                 * @cfg baseDir -- prefix the files listed in indexfiles with this.
 128                 */
 129
 130                 public string baseDir = "";
 131
 132
 133                 public  string outstr = ""; // if no target is specified - then this will contain the result
 134
 135                 /**
 136                 *  result of complication - a JSON object containing warnings / errors etc..
 137                 *  FORMAT:
 138                 *     warn-TOTAL : X  (number of warnings.
 139                 *     err-TOTAL: X  (number of errors) << this indicates failure...
 140                 *     warn : {
 141                 *            FILENAME : {
 142                 *                  line : [ Errors,Errors,.... ]
 143                 *     err : {
 144                 *           .. sane format..
 145                 *
 146                 */
 147                 public Json.Object result;   // output - what's the complication result
 148
 149
 150                 public Packer()
 151                 {
 152                         this.result = new Json.Object();
 153                         this.files = new Gee.ArrayList<string>();
 154
 155                         new Lang_Class(); ///initilizaze lang..
 156
 157                 }
 158
 159                 public void loadSourceIndexes(Gee.ArrayList<string> indexes)
 160                 {
 161                         foreach(var f in indexes) {
 162                                 this.loadSourceIndex(f);
 163                         }
 164                 }
 165
 166                 public void loadFiles(string[] fs)
 167                 {
 168                         // fixme -- prefix baseDir?
 169                         foreach(var f in fs) {
 170                             GLib.debug("add File: %s", f);
 171                                 this.files.add(f); //?? easier way?
 172                         }
 173                 }
 174                 public void loadFile(string f)
 175                 {
 176                     // fixme -- prefix baseDir?
 177                     GLib.debug("add File: %s", f);
 178                         this.files.add(f);
 179                         GLib.debug("FILE LEN: %d", this.files.size);
 180                 }
 181
 182
 183                 public string pack(string target, string targetDebug = "") throws PackerError, TokenReaderError , ScopeParserError
 184                 {
 185                     this.target = target;
 186                         this.targetDebug  = targetDebug;
 187
 188                     if (this.files.size < 1) {
 189                                 throw new PackerError.ArgumentError("No Files loaded before pack() called");
 190                         }
 191                         if (this.target.length > 0 ) {
 192                                 this.targetStream = File.new_for_path(this.target).replace(null, false,FileCreateFlags.NONE);
 193                         }
 194                         if (this.targetDebug.length > 0 ) {
 195                                 this.targetDebugStream = File.new_for_path(this.targetDebug).replace(null, false,FileCreateFlags.NONE);
 196                         }
 197                         return this.packAll();
 198                 }
 199
 200
 201
 202
 203
 204                 /**
 205                  * load a dependancy list -f option
 206                  * @param {String} srcfile sourcefile to parse
 207                  *
 208                  */
 209
 210                 public void loadSourceIndex(string in_srcfile)
 211                 {
 212
 213                     var srcfile = in_srcfile;
 214                     if (srcfile[0] != '/') {
 215                                 srcfile = this.baseDir + in_srcfile;
 216                         }
 217                     string str;
 218                     FileUtils.get_contents(srcfile,out str);
 219
 220                     var lines = str.split("\n");
 221                     for(var i =0; i < lines.length;i++) {
 222
 223                             var f = lines[i].strip();
 224                         if (f.length < 1 ||
 225                                 Regex.match_simple ("^/", f) ||
 226                                 !Regex.match_simple ("[a-zA-Z]+", f)
 227                         ){
 228                                 continue; // blank comment or not starting with a-z
 229                         }
 230
 231                         if (Regex.match_simple ("\\.js$", f)) {
 232                             this.files.add( f);
 233                             // js file..
 234                             continue;
 235                         }
 236
 237                                 // this maps Roo.bootstrap.XXX to Roo/bootstrap/xxx.js
 238                                 // should we prefix? =- or should this be done elsewhere?
 239
 240                         var add = f.replace(".", "/") + ".js";
 241
 242                         if (add[0] != '/') {
 243                                         add = this.baseDir + add;
 244                                 }
 245
 246                         if (this.files.contains(add)) {
 247                             continue;
 248                         }
 249
 250
 251
 252                         this.files.add( add );
 253
 254                     }
 255                 }
 256
 257
 258                 private string packAll() throws  TokenReaderError , ScopeParserError // do the packing (run from constructor)
 259                 {
 260
 261                     //this.transOrigFile= bpath + '/../lang.en.js'; // needs better naming...
 262                     //File.write(this.transfile, "");
 263                     if (this.target.length > 0) {
 264                         this.targetStream.write("".data);
 265                     }
 266
 267                     if (this.targetDebugStream != null) {
 268                             this.targetDebugStream.write("".data);
 269                     }
 270
 271
 272                     foreach(var file in this.files) {
 273
 274                         print("reading %s\n",file );
 275
 276                         if (!FileUtils.test (file, FileTest.EXISTS) || FileUtils.test (file, FileTest.IS_DIR)) {
 277                             print("SKIP (is not a file) %s\n ", file);
 278                             continue;
 279                         }
 280
 281                                 var loaded_string = false;
 282                                 string file_contents = "";
 283                         // debug Target
 284
 285                         if (this.targetDebugStream !=null) {
 286
 287                                 FileUtils.get_contents(file,out file_contents);
 288                             this.targetDebugStream.write(file_contents.data);
 289                             loaded_string = false;
 290                         }
 291                         // it's a good idea to check with 0 compression to see if the code can parse!!
 292
 293                         // debug file..
 294                         //File.append(dout, str +"\n");
 295
 296
 297
 298                         var minfile = this.tmpDir + "/" + file.replace("/", ".");
 299
 300
 301                         // let's see if we have a min file already?
 302                         // this might happen if tmpDir is set ..
 303
 304
 305                         if ( FileUtils.test (minfile, FileTest.EXISTS)) {
 306
 307                                 var otv = File.new_for_path(file).query_info (FileAttribute.TIME_MODIFIED, 0).get_modification_time();
 308                                 var mtv = File.new_for_path(minfile).query_info (FileAttribute.TIME_MODIFIED, 0).get_modification_time();
 309
 310
 311                            // print("%s : compare : Cache file  %s to Orignal Time %s\n", file, mtv.to_iso8601(), otv.to_iso8601());
 312                             if (mtv.tv_usec > otv.tv_usec) {
 313                                 continue; // file is newer or the same time..
 314
 315                             }
 316
 317                         }
 318
 319                         print("COMPRESSING to %s\n", minfile);
 320                         //var codeComp = pack(str, 10, 0, 0);
 321                         if (this.cleanup && FileUtils.test (minfile, FileTest.EXISTS)) {
 322                             FileUtils.remove(minfile);
 323                         }
 324                         if (!loaded_string) {
 325                                 FileUtils.get_contents(file,out file_contents);
 326                         }
 327
 328                          this.packFile(file_contents, file, minfile);
 329
 330
 331                     }
 332
 333                         if (this.dumpTokens) {
 334
 335                                 GLib.Process.exit(0);
 336                         }
 337                     print("MERGING SOURCE\n");
 338
 339                     for(var i=0; i < this.files.size; i++)  {
 340                         var file = this.files[i];
 341                         var minfile = this.tmpDir + "/" + file.replace("/", ".");
 342
 343
 344                         if ( !FileUtils.test(minfile, FileTest.EXISTS)) {
 345                                 print("skipping source %s - does not exist\n", minfile);
 346                             continue;
 347                         }
 348                         string str;
 349                         FileUtils.get_contents(minfile, out str);
 350                         print("using MIN FILE  %s\n", minfile);
 351                         if (str.length > 0) {
 352                             if (this.targetStream != null) {
 353                                         this.targetStream.write(("// " +
 354                                                 ( (file.length > this.baseDir.length) ? file.substring(this.baseDir.length)  : file ) +
 355                                                 "\n").data);
 356                                         this.targetStream.write((str + "\n").data);
 357
 358                             } else {
 359                                 this.outstr += "//" +
 360                                         ( (file.length > this.baseDir.length) ? file.substring(this.baseDir.length)  : file ) +  "\n";
 361                                 this.outstr += str + "\n";
 362                             }
 363
 364                         }
 365                         if (this.cleanup) {
 366                             FileUtils.remove(minfile);
 367                         }
 368
 369                     }
 370                     if (this.target.length > 0 ) {
 371                             print("Output file: " + this.target);
 372                     }
 373                     if (this.targetDebug.length > 0) {
 374                                  print("Output debug file: %s\n" , this.targetDebug);
 375                         }
 376
 377                         // OUTPUT should be handled by PackerRun (so that this can be used as a library...)
 378                         if (this.outstr.length > 0 ) {
 379                 return this.outstr;
 380                         //      stdout.printf ("%s", this.outstr);
 381                         }
 382                     return "";
 383
 384
 385                 }
 386                 /**
 387                  * Core packing routine  for a file
 388                  *
 389                  * @param str - str source text..
 390                  * @param fn - filename (for reference?)
 391                  * @param minfile - min file location...
 392                  *
 393                  */
 394
 395                 public  string packFile  (string str,string fn, string minfile) throws  TokenReaderError, ScopeParserError
 396                 {
 397
 398                         var tr = new  TokenReader();
 399                         tr.keepDocs =true;
 400                         tr.keepWhite = true;
 401                         tr.keepComments = true;
 402                         tr.sepIdents = true;
 403                         tr.collapseWhite = false;
 404                         tr.filename = fn;
 405
 406                         // we can load translation map here...
 407
 408                         TokenArray toks = tr.tokenize(new TextStream(str)); // dont merge xxx + . + yyyy etc.
 409
 410                         if (this.dumpTokens) {
 411                                 toks.dump();
 412                                 return "";
 413                                 //GLib.Process.exit(0);
 414                         }
 415
 416                         this.activeFile = fn;
 417
 418                         // and replace if we are generating a different language..
 419
 420
 421                         //var ts = new TokenStream(toks);
 422                         //print(JSON.stringify(toks, null,4 )); Seed.quit();
 423                         var ts = new Collapse(toks.tokens);
 424
 425                         //ts.dumpAll("");                       print("Done collaps"); Process.exit(1);
 426
 427                    // print(JSON.stringify(ts.tokens, null,4 )); Seed.quit();
 428                         //return;//
 429                         if (!this.skipScope) {
 430                                 var sp = new ScopeParser(ts);
 431
 432                                 //sp.packer = this;
 433                                 sp.buildSymbolTree();
 434                                 sp.mungeSymboltree();
 435
 436
 437                                 sp.printWarnings();
 438                         }
 439
 440
 441                         //print(sp.warnings.join("\n"));
 442                         //(new TokenStream(toks.tokens)).dumpAll(""); GLib.Process.exit(1);
 443                         // compress works on the original array - in theory the replacements have already been done by now
 444                         var outf = CompressWhite(new TokenStream(toks.tokens), this, this.keepWhite); // do not kill whitespace..
 445
 446
 447                         debug("RESULT: \n %s\n", outf);
 448
 449                          if (outf.length > 0 && minfile.length > 0 ) {
 450                                 FileUtils.set_contents(minfile, outf);
 451
 452                         }
 453
 454
 455                         return outf;
 456
 457
 458
 459                 }
 460
 461
 462                 public string md5(string str)
 463                 {
 464
 465                         return GLib.Checksum.compute_for_string(GLib.ChecksumType.MD5, str);
 466
 467                 }
 468
 469          //stringHandler : function(tok) -- not used...
 470     }
 471
 472 }