1 // <script type="text/javascript">
4 * pack a javascript file, and return a shorter version!
6 * a bit picky at present with ; and crlf reading...
7 * @arg ts {TokenStream}
11 CompressWhite = function (ts, packer, keepWhite)
13 keepWhite = keepWhite || false;
15 //var str = File.read(fn);
23 if (tok.type == "WHIT") {
29 // just spaces, not \n!
30 //if (tok.data.indexOf("\n") < 0) {
36 if (tok.data == "}") {
38 if (ts.lookTok(1).type == 'NAME' && ts.look(1,true).name == "NEWLINE") {
40 ts.look(0).outData = ts.look(0).data+"\n";
46 // add semi-colon's where linebreaks are used... - not foolproof yet.!
47 if (tok.type == "NAME") {
48 //var tokident = ts.look(-1).data + tok.data + ts.look(1).data + ts.look(2).data;
49 // a = new function() {}
50 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == 'NEW' &&
51 ts.lookTok(3).name == 'FUNCTION') {
59 // if next is not ';' -> make it so...
61 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.lookTok(1,true).name == "NEWLINE") {
62 ts.look(0).outData = ts.cur().data +";";
68 // a = function() { ...
70 if (ts.lookTok(1).data == '=' && ts.lookTok(2).name == "FUNCTION") {
72 //println("got = function() ");
75 if (!ts.balance("(") ){
77 print(">>>>>>>>>>>>>>>>>HERE>>>>>>>>>>>>");
80 throw "could not find end lbrace!!!";
82 //print("AFTER BALANCE (");
83 //ts.dump(cu, ts.cursor);
84 //ts.cursor--; // cursor at the (
85 if (!ts.balance("{") ){
87 print(">>>>>>>>>>>>>>>>>HERE>>>>>>>>>>>>");
90 throw "could not find end lbrace!!!";
92 //print('FN: '+ts.tokens[cu].toString());
93 //print('F1: '+ts.lookTok(1).toString());
94 //print('F2: '+ts.look(1,true).toString());
96 // if next is not ';' -> make it so...
97 // although this var a=function(){},v,c; causes
98 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.look(1,true).name == "NEWLINE") {
100 ts.look(0).outData = ts.look(0).data+";";
101 // print("ADDING SEMI: " + ts.look(0).toString());
102 //ts.dump(cu, ts.cursor+2);
105 //ts.dump(cu, ts.cursor+2);
110 // next item is a name..
111 if ((ts.lookTok(1).type == 'NAME' || ts.lookTok(1).type == 'KEYW' ) && ts.look(1,true).name == "NEWLINE") {
112 // preserve linebraek
113 ts.look(0).outData = ts.look(0).data+"\n";
115 // method call followed by name..
116 if (ts.lookTok(1).data == "(") {
120 // although this var a=function(){},v,c; causes
122 if (ts.lookTok(1).type == 'NAME' && ts.look(1,true).name == "NEWLINE") {
124 ts.look(0).outData = ts.look(0).data+"\n";
132 // function a () { ... };
134 if (ts.look(-1).isTypeN(Script.TOKfunction) && ts.look(1).isTypeN(Script.TOKlparen)) {
136 //println("got = function() ");
139 ts.balance("lparen");
140 ts.balance("lbrace");
141 // if next is not ';' -> make it so...
142 // although this var a=function(){},v,c; causes
143 if (!ts.look(1).isData(';') && !ts.look(1).isData('}') && ts.look(1,true).isLineBreak()) {
144 ts.cur().outData = ts.cur().data+";";
154 if (ts.lookTok(1).data == '=' && ts.lookTok(2).data == '{') {
156 //println("----------*** 3 *** --------------");
159 if (!ts.balance("{") ){
161 print(">>>>>>>>>>>>>>>>>HERE>>>>>>>>>>>>");
164 throw "could not find end lbrace!!!";
166 // if next is not ';' -> make it so...
168 if (ts.lookTok(1).data != ';' && ts.lookTok(1).data != '}' && ts.look(1,true).name=="NEWLINE") {
169 ts.look(0).outData = ts.look(0).data +";";
177 // a = function(....) { }
184 //println("got Token: " + tok.type);
188 switch(tok.data.toUpperCase()) {
189 // things that need space appending
193 // if next item is a identifier..
194 if (ts.lookTok(1).type == "NAME" || ts.lookTok(1).data.match(/^[a-z]+$/i) ) { // as include is a keyword for us!!
195 tok.outData = tok.data + " ";
200 case "RETURN": // if next item is not a semi; (or }
201 if (ts.lookTok(1).data == ';' || ts.lookTok(1).data == '}') {
204 tok.outData = tok.data + " ";
209 case "ELSE": // if next item is not a semi; (or }
210 if (!ts.lookTok(1).name == "IF") {
214 tok.outData = tok.data + " ";
217 case "++": // if previous was a plus or next is a + add a space..
218 case "--": // if previous was a - or next is a - add a space..
220 var p = (tok.data == "--" ? '-' : '+');
222 if (ts.lookTok(1).data == p) {
223 tok.outData = tok.data + " ";
225 if (ts.lookTok(-1).data == p) {
226 tok.outData = " " + tok.data;
231 case "IN": // before and after??
234 tok.outData = " " + tok.data + " ";
237 case "VAR": // always after..
244 tok.outData = tok.data + " ";
248 case "TYPEOF": // what about typeof(
249 if (ts.lookTok(1).data != '(') {
250 tok.outData = tok.data + " ";
254 //remove semicolon before brace --
255 //if(ts.look(1).isTypeN(Script.TOKrbrace)) {
267 // NOW OUTPUT THE THING.
268 //var f = new File(minfile, File.NEW);
272 out.length = ts.slen; // prealloc.
277 tok = keepWhite ? ts.next() : ts.nextTok();
282 if (tok.type == "COMM") {
286 if (tok.type == "NAME" && tok.identifier && tok.identifier.mungedValue && tok.identifier.mungedValue.length) {
287 //f.write(tok.identifier.mungedValue);
288 out += tok.identifier.mungedValue;
292 // at this point we can apply a text translation kit...
294 if ((tok.type == 'STRN') && (tok.name== 'DOUBLE_QUOTE')) {
295 if (packer && packer.stringHandler) {
296 out += packer.stringHandler(tok);
301 out += tok.outData !== false ? tok.outData : tok.data;
303 if ((tok.outData == ';') && (out.length - outoff > 255)) {
310 // remove the last ';' !!!
311 if (out.substring(out.length-1) == ';') {
312 return out.substring(0,out.length-1);