14 var x = new JSON.Packer(target, debugTarget);
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"
22 x.debugTranslateTarget : "/tmp/output.translate.js" << this used to be the single vs double quotes.. we may not use it in future..
23 x.translateJSON: "/tmp/translate.json",
25 x.packAll(); // writes files etc..
29 * Notes for improving compacting:
30 * if you add a jsdoc comment
37 * directly before an eval statement, it will compress all the code around the eval,
38 * and not rename the variables 'avarname'
40 * Dont try running this on a merged uncompressed large file - it's used to be horrifically slow. not sure about now..
41 * Best to use lot's of small classes, and use it to merge, as it will cache the compaction
45 * Notes for translation
46 * - translation relies on you using double quotes for strings if they need translating
47 * - single quoted strings are ignored.
49 * Generation of indexFiles
50 * - translateIndex = the indexfile
61 public class Packer : Object
64 * @cfg {String} target to write files to - must be full path.
68 * @cfg {String} debugTarget target to write files debug version to (uncompacted)- must be full path.
73 * @cfg {String} tmpDir (optional) where to put the temporary files.
74 * if you set this, then files will not be cleaned up
76 public string tmpDir = "/tmp"; // FIXME??? in ctor?
81 * @cfg {Boolean} cleanup (optional) clean up temp files after done -
82 * Defaults to false if you set tmpDir, otherwise true.
84 public bool cleanup = true;
88 * @cfg {Boolean} keepWhite (optional) do not remove white space in output.
89 * usefull for debugging compressed files.
92 public bool keepWhite = true;
95 // list of files to compile...
96 Gee.ArrayList<string> files;
98 public string out = ""; // if no target is specified - then this will contain the result
100 public Packer(string target, string targetDebug = "")
102 this.target = target;
103 this.targetDebug = targetDebug;
107 public void loadSourceIndexes(Gee.ArrayList<string> indexes)
109 foreach(var f in indexes) {
110 this.loadSourceIndex(f);
114 public void loadFiles(Gee.ArrayList<string> fs)
116 foreach(var f in fs) {
117 this.files.add(f); //?? easier way?
120 FileOutputStream targetStream = null;
121 FileOutputStream targetDebugStream = null;
126 throw new Packer.ArgumentError("No Files loaded before pack() called");
128 if (this.target.length > 0 ) {
129 this.targetStream = File.new_for_path(this.target).replace(null, false,FileCreateFlags.NONE);
131 if (this.targetDebug.length > 0 ) {
132 this.targetDebugStream = File.new_for_path(this.targetDebug).replace(null, false,FileCreateFlags.NONE);
145 * load a dependancy list -f option
146 * @param {String} srcfile sourcefile to parse
150 public void loadSourceIndex(string srcfile)
153 FileUtils.get_contents(srcfile,out str);
155 var lines = str.split("\n");
156 for(var i =0; i < lines.length;i++) {
158 var f = lines[i].strip();
160 Regex.match_simple ("^\/", f) ||
161 !Regex.match_simple ("[a-zA-Z]+", f)
163 continue; // blank comment or not starting with a-z
166 if (Regex.match_simple ("\.js$", f)) {
172 // this maps Roo.bootstrap.XXX to Roo/bootstrap/xxx.js
173 // should we prefix? =- or should this be done elsewhere?
175 var add = f.replace(".", "/") + ".js";
176 if (_this.files.contains(add)) {
179 _this.files.add( add );
185 private void packAll() // do the packing (run from constructor)
188 //this.transOrigFile= bpath + '/../lang.en.js'; // needs better naming...
189 //File.write(this.transfile, "");
190 if (this.target.length > 0) {
191 this.targetStream.write("");
194 if (this.debugTarget > 0) {
195 this.targetDebugStream.write("");
197 foreach(var file in this.files) {
199 print("reading %s\n",file );
201 if (FileUtils.test (file, FileTest.EXISTS) && ! FileUtils.test (file, FileTest.IS_DIR)) {
202 print("SKIP (is not a file) %s\n ", file);
208 if (this.debugTargetStream !=null) {
210 FileUtils.get_contents(file,out str);
211 this.debugTarget.write(str);
213 // it's a good idea to check with 0 compression to see if the code can parse!!
216 //File.append(dout, str +"\n");
220 var minfile = this.tmpDir + '/' + file.replace("/", '.');
223 // let's see if we have a min file already?
224 // this might happen if tmpDir is set ..
226 if (true && FileUtils.test (minfile, FileTest.EXISTS)) {
227 var mt = File.mtime(minfile);
228 var ot = File.mtime(file);
229 print("compare : " + mt + "=>" + ot);
237 print("COMPRESSING ");
238 //var codeComp = pack(str, 10, 0, 0);
239 if (File.exists(minfile)) {
240 File.remove(minfile);
242 var str = File.read(file);
243 var str = this.packFile(str, file, minfile);
250 // if we are translating, write the translations strings at the top
253 if (this.translateJSON) {
256 print("MERGING LANGUAGE");
257 var out = "if (typeof(_T) == 'undefined') { _T={};}\n"
259 File.write(this.target, out);
264 File.write(this.translateJSON, "");
265 for(var i=0; i < this.files.length; i++) {
266 var file = this.files[i];
267 var transfile= this.tmpDir + '/' +file.replace(/\//g, '.') +'.lang.trans';
268 var transmd5 = this.tmpDir + '/' +file.replace(/\//g, '.') +'.lang';
269 if (File.exists(transmd5)) {
270 var str = File.read(transmd5);
273 File.append(this.target, str + "\n");
275 this.out += str + "\n";
280 File.remove(transmd5);
283 if (File.exists(transfile)) {
284 var str = File.read(transfile);
286 File.append(this.translateJSON, str);
289 File.remove(transfile);
297 print("MERGING SOURCE");
299 for(var i=0; i < this.files.length; i++) {
300 var file = this.files[i];
301 var minfile = this.tmpDir + '/' + file.replace(/\//g, '.');
304 if (!File.exists(minfile)) {
307 var str = File.read(minfile);
308 print("using MIN FILE "+ minfile);
311 File.append(this.target, '//' + file + "\n");
312 File.append(this.target, str + "\n");
314 this.out += '//' + file + "\n";
315 this.out += str + "\n";
320 File.remove(minfile);
324 print("Output file: " + this.target);
325 if (this.debugTarget) print("Output debug file: " + this.debugTarget);
332 * Core packing routine for a file
334 * @param str - str source text..
335 * @param fn - filename (for reference?)
336 * @param minfile - min file location...
340 packFile : function (str,fn,minfile)
343 var tr = new TokenReader( {
348 collapseWhite : false,
351 this.timerPrint("START" + fn);
353 // we can load translation map here...
355 var toks = tr.tokenize(new TextStream(str)); // dont merge xxx + . + yyyy etc.
357 // at this point we can write a language file...
358 if (this.translateJSON) {
360 this.writeTranslateFile(fn, minfile, toks);
363 this.activeFile = fn;
365 // and replace if we are generating a different language..
367 this.timerPrint("Tokenized");
368 //var ts = new TokenStream(toks);
369 //print(JSON.stringify(toks, null,4 )); Seed.quit();
370 var ts = new Collapse(toks);
371 // print(JSON.stringify(ts.tokens, null,4 )); Seed.quit();
373 var sp = new ScopeParser(ts);
374 this.timerPrint("Converted to Parser");
376 sp.buildSymbolTree();
377 this.timerPrint("Built Sym tree");
378 sp.mungeSymboltree();
379 this.timerPrint("Munged Sym tree");
380 print(sp.warnings.join("\n"));
381 this.timerPrint("Compressed");
383 var out = CompressWhite(new TokenStream(toks), this, this.keepWhite); // do not kill whitespace..
386 this.timerPrint("Compressed");
389 File.write(minfile, out);
390 this.timerPrint("Write (" + out.length + "bytes) " + minfile);
399 timerPrint: function (str) {
400 var ntime = new Date() * 1;
401 var tdif = ntime -this.timer;
403 print('['+tdif+']'+str);
408 * Translation concept...
409 * -> replace text strings with _T....
410 * -> this file will need inserting at the start of the application....
411 * -> we need to generate 2 files,
412 * -> a reference used to do the translation, and the _T file..
415 * We store the trsum on the token...
419 writeTranslateFile : function(fn, minfile, toks)
422 var map = {}; // 'string=> md5sum'
427 var tokfind = function (j,dir) {
429 if ((dir < 0) && (j < 0)) {
432 if ((dir > 0) && (j >= toks.length)) {
436 if (toks[j].type != 'WHIT') {
445 for (var i=0;i<toks.length;i++) {
448 if (t.type != 'STRN') {
451 if (t.name != 'DOUBLE_QUOTE') {
455 last = tokfind(i,-1);
456 next = tokfind(i,+1);
458 // we have to ignore key values on objects
461 // last == '{' or ',' and
465 next.type == 'PUNC' &&
468 last.type == 'PUNC' &&
469 (last.data == ',' || last.data == '{')
471 continue; // found object key... - we can not translate these
474 var sval = t.data.substring(1,t.data.length-1);
475 var ffn = fn.substring(_this.prefix.length);
477 t.trsum = _this.md5(ffn + '-' + sval);
485 var transfile = minfile + '.lang.trans';
486 var transmd5 = minfile + '.lang';
487 print("writeTranslateFile " + transfile);
490 if (File.exists(transfile)) {
491 File.remove(transfile);
493 if (File.exists(transmd5)) {
494 File.remove(transmd5);
496 for(v in map) { i++; break };
498 return; // no strings in file...
500 var ffn = fn.substring(this.prefix.length);
503 File.write(transfile, "\n'" + ffn + "' : {");
507 File.write(transmd5, '');
512 File.append(transfile, l + "\n\t\"" + v + "\" : \"" + v +"\"");
514 // strings are raw... - as the where encoded to start with!!!
515 // so we should not need to encode them again.. - just wrap with "
516 File.append(transmd5, '_T["' + this.md5(ffn + '-' + v) + '"]="'+v+"\";\n");
518 File.append(transfile, "\n},"); // always one trailing..
522 md5 : function (string)
525 return GLib.compute_checksum_for_string(GLib.ChecksumType.MD5, string, string.length);
528 stringHandler : function(tok)
530 //print("STRING HANDLER");
531 // callback when outputing compressed file,
533 if (!this.translateJSON) {
534 // print("TURNED OFF");
537 if (tok.name == 'SINGLE_QUOTE') {
541 if (typeof(tok.trsum) == 'undefined') {
545 return '_T["' + tok.trsum + '"]';
547 var sval = data.substring(1,data.length-1);
548 // we do not clean up... quoting here!??!!?!?!?!?
551 // blank with tabs or spaces..
552 //if (!sval.replace(new RegExp("(\\\\n|\\\\t| )+",'g'), '').length) {
553 // return tok.outData;
556 var sval = tok.data.substring(1,data.length-1);
557 var fn = this.activeFile.substring(this.prefix.length);
560 return '_T["' + this.md5(fn + '-' + sval) + '"]';