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JsDecoder.js
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1149 lines (1096 loc) · 34.1 KB
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/*
* DO NOT REMOVE THIS NOTICE
*
* PROJECT: JsDecoder
* VERSION: 1.1.0
* COPYRIGHT: (c) 2004-2008 Cezary Tomczak
* LINK: http://code.gosu.pl
* LICENSE: GPL
*/
function JsDecoder()
{
this.s = '';
this.len = 0;
this.i = 0;
this.lvl = 0; /* indent level */
this.code = [''];
this.row = 0;
this.switches = [];
this.lastWord = '';
this.nextChar = '';
this.prevChar = '';
this.isAssign = false;
this.decode = function ()
{
this.s = this.s.replace(/[\r\n\f]+/g, "\n");
this.len = this.s.length;
while (this.i < this.len)
{
var c = this.s.charAt(this.i);
this.charInit();
this.switch_c(c);
this.i++;
}
return this.code.join("\n");
};
this.switch_c = function(c)
{
switch (c)
{
case "\n":
this.linefeed();
break;
case ' ':
case "\t":
this.space();
break;
case '{': this.blockBracketOn(); break;
case '}': this.blockBracketOff(); break;
case ':': this.colon(); break;
case ';': this.semicolon(); break;
case '(': this.bracketOn(); break;
case ')': this.bracketOff(); break;
case '[': this.squareBracketOn(); break;
case ']': this.squareBracketOff(); break;
case '"':
case "'":
this.quotation(c);
break;
case '/':
if ('/' == this.nextChar) {
this.lineComment();
} else if ('*' == this.nextChar) {
this.comment();
} else {
this.slash();
}
break;
case ',': this.comma(); break;
case '.': this.dot(); break;
case '~':
case '^':
this.symbol1(c);
break;
case '-': case '+': case '*': case '%':
case '<': case '=': case '>': case '?':
case ':': case '&': case '|': case '/':
this.symbol2(c);
break;
case '!':
if ('=' == this.nextChar) {
this.symbol2(c);
} else {
this.symbol1(c);
}
break;
default:
if (/\w/.test(c)) { this.alphanumeric(c); }
else { this.unknown(c); }
break;
}
c = this.s.charAt(this.i);
if (!/\w/.test(c)) {
this.lastWord = '';
}
};
this.blockBracketOn = function ()
{
this.isAssign = false;
var nextNW = this.nextNonWhite(this.i);
if ('}' == nextNW) {
var ss = (this.prevChar == ')' ? ' ' : '');
this.write(ss+'{');
this.lvl++;
return;
}
if (/^\s*switch\s/.test(this.getCurrentLine())) {
this.switches.push(this.lvl);
}
var line = this.getCurrentLine();
var line_row = this.row;
var re = /(,)\s*(\w+\s*:\s*function\s*\([^\)]*\)\s*)$/;
if (re.test(line)) {
this.replaceLine(this.code[line_row].replace(re, '$1'));
this.writeLine();
var match = re.exec(line);
this.write(match[2]);
}
/* example: return {
title: 'Jack Slocum',
iconCls: 'user'}
After return bracket cannot be on another line
*/
if (/^\s*return\s*/.test(this.code[this.row])) {
if (/^\s*return\s+\w+/.test(this.code[this.row])) {
this.writeLine();
} else if (this.prevChar != ' ') {
this.write(' ');
}
this.write('{');
this.writeLine();
this.lvl++;
return;
}
if (/function\s*/.test(this.code[this.row]) || this.isBlockBig()) {
this.writeLine();
} else {
if (this.prevChar != ' ' && this.prevChar != "\n" && this.prevChar != '(') {
/* && this.prevChar != '(' && this.prevChar != '[' */
this.write(' ');
}
}
this.write('{');
this.lvl++;
if ('{' != nextNW) {
this.writeLine();
}
};
this.isBlockBig = function()
{
var i = this.i + 1;
var count = 0;
var opened = 0;
var closed = 0;
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (/\s/.test(c)) {
continue;
}
if ('}' == c && opened == closed) {
break;
}
if ('{' == c) { opened++; }
if ('}' == c) { closed++; }
count++;
if (count > 80) {
return true;
}
}
return (count > 80);
};
this.blockBracketOff = function ()
{
var nextNW = this.nextNonWhite(this.i);
var prevNW = this.prevNonWhite(this.i);
var line = this.getCurrentLine();
if (prevNW != '{')
{
if (line.length && nextNW != ';' && nextNW != '}' && nextNW != ')' && nextNW != ',') {
//this.semicolon();
this.writeLine();
} else if (line.length && prevNW != ';' && nextNW == '}' && this.isAssign) {
this.semicolon();
} else if (line.length && this.isAssign && prevNW != ';') {
this.semicolon();
} else if (line.length && prevNW != ';') {
if (/^\s*(else)?\s*return[\s(]+/i.test(line)) {
this.semicolon();
} else {
this.writeLine();
}
}
}
this.write('}');
if (',' == nextNW) {
this.write(',');
this.goNextNonWhite();
}
var next3 = this.nextManyNW(3);
if (next3 == '(),') {
this.write('(),');
this.goNextManyNW('(),');
this.writeLine();
}
else if (next3 == '();') {
this.write('();');
this.goNextManyNW('();');
this.writeLine();
}
else if (next3 == '():') {
this.write('()');
this.goNextManyNW('()');
this.write(' : ');
this.goNextNonWhite();
}
else
{
if ('{' == prevNW) {
if (',' == nextNW && this.getCurrentLine().length < 80) {
this.write(' ');
} else {
if (this.nextWord() || '}' == nextNW) {
this.writeLine();
}
}
} else {
if (')' != nextNW && ']' != nextNW) {
if (',' == nextNW && /^[\s\w,]+\)/.test(this.s.substr(this.i, 20))) {
this.write(' ');
} else {
this.writeLine();
}
}
}
}
this.lvl--;
if (this.switches.length && this.switches[this.switches.length - 1] == this.lvl)
{
var row = this.row - 1;
var spaces1 = str_repeat(' ', this.lvl * 4);
var spaces2 = str_repeat(' ', (this.lvl + 1) * 4);
var sw1 = new RegExp('^'+spaces1+'(switch\\s|{)');
var sw2 = new RegExp('^'+spaces2+'(case|default)[\\s:]');
var sw3 = new RegExp('^'+spaces2+'[^\\s]');
while (row > 0) {
row--;
if (sw1.test(this.code[row])) {
break;
}
if (sw2.test(this.code[row])) {
continue;
}
this.replaceLine(' ' + this.code[row], row);
/*
if (sw3.test(this.code[row])) {
this.replaceLine(' ' + this.code[row], row);
}
*/
}
this.switches.pop();
}
// fix missing brackets for sub blocks
if (this.sub) {
return;
}
var re1 = /^(\s*else\s*if)\s*\(/;
var re2 = /^(\s*else)\s+[^{]+/;
var part = this.s.substr(this.i+1, 100);
if (re1.test(part)) {
this.i += re1.exec(part)[1].length;
this.write('else if');
this.lastWord = 'if';
//debug(this.getCurrentLine(), 're1');
this.fixSub('else if');
//debug(this.getCurrentLine(), 're1 after');
} else if (re2.test(part)) {
this.i += re2.exec(part)[1].length;
this.write('else');
this.lastWord = 'else';
//debug(this.getCurrentLine(), 're2');
this.fixSub('else');
//debug(this.getCurrentLine(), 're2 after');
}
};
this.bracketOn = function ()
{
if (this.isKeyword() && this.prevChar != ' ' && this.prevChar != "\n") {
this.write(' (');
} else {
this.write('(');
}
};
this.bracketOff = function ()
{
this.write(')');
/*
if (/\w/.test(this.nextNonWhite(this.i))) {
this.semicolon();
}
*/
if (this.sub) {
return;
}
var re = new RegExp('^\\s*(if|for|while|do)\\s*\\([^{}]+\\)$', 'i');
var line = this.getCurrentLine();
if (re.test(line)) {
var c = this.nextNonWhite(this.i);
if ('{' != c && ';' != c && ')' != c) {
var opened = 0;
var closed = 0;
var foundFirst = false;
var semicolon = false;
var fix = false;
for (var k = 0; k < line.length; k++) {
if (line.charAt(k) == '(') {
foundFirst = true;
opened++;
}
if (line.charAt(k) == ')') {
closed++;
if (foundFirst && opened == closed) {
if (k == line.length - 1) {
fix = true;
} else {
break;
}
}
}
}
if (fix) {
//alert(this.s.substr(this.i));
//throw 'asdas';
//alert(line);
this.fixSub(re.exec(line)[1]);
/*
this.writeLine();
this.lvl2++;
var indent = '';
for (var j = 0; j < this.lvl2; j++) {
indent += ' ';
}
this.write(indent);
*/
}
}
}
};
this.sub = false;
this.orig_i = null;
this.orig_lvl = null;
this.orig_code = null;
this.orig_row = null;
this.orig_switches = null;
this.restoreOrig = function (omit_i)
{
this.sub = false;
if (!omit_i) { this.i = this.orig_i; }
this.lvl = this.orig_lvl;
this.code = this.orig_code;
this.row = this.orig_row;
this.switches = this.orig_switches;
this.prevCharInit();
this.lastWord = '';
this.charInit();
this.isAssign = false;
};
this.combineSub = function ()
{
//debug(this.orig_code, 'orig_code');
for (i = 0; i < this.code.length; i++) {
var line = this.orig_code[this.orig_row];
if (0 == i && line.length) {
if (line.substr(line.length-1, 1) != ' ') {
this.orig_code[this.orig_row] += ' ';
}
this.orig_code[this.orig_row] += this.code[i].trim();
} else {
this.orig_code[this.orig_row+i] = this.code[i];
}
}
//debug(this.code, 'sub_code');
//debug(this.orig_code, 'code');
};
this.fixSub = function (keyword)
{
// repair missing {}: for, if, while, do, else, else if
if (this.sub) {
return;
}
if ('{' == this.nextNonWhite(this.i)) {
return;
}
var firstWord = this.nextWord();
//debug(this.code, 'fixSub('+keyword+') start');
this.orig_i = this.i;
this.orig_lvl = this.lvl;
this.orig_code = this.code;
this.orig_row = this.row;
this.orig_switches = this.switches;
this.sub = true;
this.code = [''];
this.prevChar = '';
this.row = 0;
this.switches = [];
this.isAssign = false;
this.i++;
var b1 = 0;
var b2 = 0;
var b3 = 0;
if ('else if' == keyword) {
var first_b2_closed = false;
}
var found = false;
/*
try catch
switch
while do
if else else else...
todo: nestings
if ()
if ()
if ()
for ()
if () asd();
else
asd();
else
if ()
try {
} catch {}
else
if ()
*/
var b1_lastWord = false;
var b2_lastWord = false;
while (!found && this.i < this.len)
{
var c = this.s.charAt(this.i);
this.charInit();
switch (c)
{
case '{': b1++; break;
case '}':
b1--;
// case: for(){if (!c.m(g))c.g(f, n[t] + g + ';')}
if (0 == b1 && 0 == b2 && 0 == b3 && this.lvl-1 == this.orig_lvl)
{
var nextWord = this.nextWord();
if ('switch' == firstWord) {
found = true;
break;
}
if ('try' == firstWord && 'catch' == b1_lastWord) {
found = true;
break;
}
if ('while' == firstWord && 'do' == b1_lastWord) {
found = true;
break;
}
if ('if' == firstWord) {
// todo
}
if ('if' == keyword && 'else' == nextWord && 'if' != firstWord) {
found = true;
break;
}
b1_lastWord = nextWord;
}
break;
case '(': b2++; break;
case ')':
b2--;
if ('else if' == keyword && 0 == b2 && !first_b2_closed) {
if (this.nextNonWhite(this.i) == '{') {
this.write(c);
this.combineSub();
this.restoreOrig(true);
//debug(this.code, 'fixSub('+keyword+') b2 return');
//debug(this.s.charAt(this.i), ' b2 current char');
return;
}
// do not restore orig i
this.write(c);
this.combineSub();
this.restoreOrig(true);
this.fixSub('if');
//debug(this.code, 'fixSub('+keyword+') b2 return');
return;
}
break;
case '[': b3++; break;
case ']': b3--; break;
case ';':
//debug(this.getCurrentLine(), 'semicolon');
//debug([b1, b2, b3]);
if (0 == b1 && 0 == b2 && 0 == b3 && this.lvl == this.orig_lvl && 'if' != firstWord) {
found = true;
}
break;
}
if (-1 == b1 && b2 == 0 && b3 == 0 && this.prevNonWhite(this.i) != '}') {
this.write(';');
this.i--;
found = true;
} else if (b1 < 0 || b2 < 0 || b3 < 0) {
found = false;
break;
} else {
this.switch_c(c);
}
this.i++;
}
this.i--;
if (found)
{
/*
var re = /^\s*(else\s+[\s\S]*)$/;
if ('if' == keyword && re.test(this.getCurrentLine())) {
this.i = this.i - re.exec(this.getCurrentLine())[1].length;
this.code[this.row] = '';
}
*/
this.s = this.s.substr(0, this.orig_i+1) + '{' + this.code.join("\n") + '}' + this.s.substr(this.i+1);
this.len = this.s.length;
}
//debug("{\n" + this.code.join("\n") + '}', 'fixSub('+keyword+') result');
//debug(found, 'found');
this.restoreOrig(false);
};
this.squareBracketOn = function ()
{
this.checkKeyword();
this.write('[');
};
this.squareBracketOff = function ()
{
this.write(']');
};
this.isKeyword = function ()
{
// Check if this.lastWord is a keyword
return this.lastWord.length && this.keywords.indexOf(this.lastWord) != -1;
};
this.linefeed = function () {};
this.space = function ()
{
if (!this.prevChar.length) {
return;
}
if (' ' == this.prevChar || "\n" == this.prevChar) {
return;
}
if ('}' == this.prevChar && ']' == this.nextChar) {
//return;
}
this.write(' ');
return;
/*
if (this.isKeyword()) {
this.write(' ');
this.lastWord = '';
} else {
var multi = ['in', 'new'];
for (var i = 0; i < multi.length; i++) {
var isKeywordNext = true;
for (var j = 0; j < multi[i].length; j++) {
if (multi[i][j] != this.s.charAt(this.i + 1 + j)) {
isKeywordNext = false;
break;
}
}
if (isKeywordNext) {
this.write(' ');
this.lastWord = '';
break;
}
}
}
*/
};
this.checkKeyword = function ()
{
if (this.isKeyword() && this.prevChar != ' ' && this.prevChar != "\n") {
this.write(' ');
}
};
this.nextWord = function ()
{
var i = this.i;
var word = '';
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (word.length) {
if (/\s/.test(c)) {
break;
} else if (/\w/.test(c)) {
word += c;
} else {
break;
}
} else {
if (/\s/.test(c)) {
continue;
} else if (/\w/.test(c)) {
word += c;
} else {
break;
}
}
}
if (word.length) {
return word;
}
return false;
};
this.nextManyNW = function(many)
{
var ret = '';
var i = this.i;
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (!/^\s+$/.test(c)) {
ret += c;
if (ret.length == many) {
return ret;
}
}
}
return false;
}
this.goNextManyNW = function (cc)
{
var ret = '';
var i = this.i;
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (!/^\s+$/.test(c)) {
ret += c;
if (ret == cc) {
this.i = i;
this.charInit();
return true;
}
if (ret.length >= cc.length) {
return false;
}
}
}
return false;
};
this.nextNonWhite = function (i)
{
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (!/^\s+$/.test(c)) {
return c;
}
}
return false;
};
this.prevNonWhite = function (i)
{
while (i > 0)
{
i--;
var c = this.s.charAt(i);
if (!/^\s+$/.test(c)) {
return c;
}
}
return false;
};
this.goNextNonWhite = function ()
{
// you need to write() this nonWhite char when calling this func
var i = this.i;
while (i < this.len - 1)
{
i++;
var c = this.s.charAt(i);
if (!/^\s+$/.test(c)) {
this.i = i;
this.charInit();
return true;
}
}
return false;
};
this.colon = function ()
{
//alert(this.getCurrentLine());
/* case 6: expr ? stat : stat */
var line = this.getCurrentLine();
if (/^\s*case\s/.test(line) || /^\s*default$/.test(line)) {
this.write(':');
this.writeLine();
} else {
this.symbol2(':');
}
};
this.isStart = function ()
{
return this.getCurrentLine().length === 0;
};
this.backLine = function ()
{
if (!this.isStart) {
throw 'backLine() may be called only at the start of the line';
}
this.code.length = this.code.length-1;
this.row--;
};
this.semicolon = function ()
{
/* for statement: for (i = 1; i < len; i++) */
this.isAssign = false;
if (this.isStart()) {
this.backLine();
}
this.write(';');
if (/^\s*for\s/.test(this.getCurrentLine())) {
this.write(' ');
} else {
this.writeLine();
}
};
this.quotation = function (quotation)
{
this.checkKeyword();
var escaped = false;
this.write(quotation);
while (this.i < this.len - 1) {
this.i++;
var c = this.s.charAt(this.i);
if ('\\' == c) {
escaped = (escaped ? false : true);
}
this.write(c);
if (c == quotation) {
if (!escaped) {
break;
}
}
if ('\\' != c) {
escaped = false;
}
}
//debug(this.getCurrentLine(), 'quotation');
//debug(this.s.charAt(this.i), 'char');
};
this.lineComment = function ()
{
this.write('//');
this.i++;
while (this.i < this.len - 1) {
this.i++;
var c = this.s.charAt(this.i);
if ("\n" == c) {
this.writeLine();
break;
}
this.write(c);
}
};
this.comment = function ()
{
this.write('/*');
this.i++;
var c = '';
var prevC = '';
while (this.i < this.len - 1)
{
this.i++;
prevC = c;
c = this.s.charAt(this.i);
if (' ' == c || "\t" == c || "\n" == c) {
if (' ' == c) {
if (this.getCurrentLine().length > 100) {
this.writeLine();
} else {
this.write(' ', true);
}
} else if ("\t" == c) {
this.write(' ', true);
} else if ("\n" == c) {
this.writeLine();
}
} else {
this.write(c, true);
}
if ('/' == c && '*' == prevC) {
break;
}
}
this.writeLine();
};
this.slash = function ()
{
/*
divisor /= or *\/ (4/5 , a/5)
regexp /\w/ (//.test() , var asd = /some/;)
asd /= 5;
bbb = * / (4/5)
asd =( a/5);
regexp = /\w/;
/a/.test();
var asd = /some/;
obj = { sasd : /pattern/ig }
*/
var a_i = this.i - 1;
var a_c = this.s.charAt(a_i);
for (a_i = this.i - 1; a_i >= 0; a_i--) {
var c2 = this.s.charAt(a_i);
if (' ' == c2 || '\t' == c2) {
continue;
}
a_c = this.s.charAt(a_i);
break;
}
var a = /^\w+$/.test(a_c) || ']' == a_c || ')' == a_c;
var b = ('*' == this.prevChar);
if (a || b) {
if (a) {
if ('=' == this.nextChar) {
var ss = this.prevChar == ' ' ? '' : ' ';
this.write(ss+'/');
} else {
this.write(' / ');
}
} else if (b) {
this.write('/ ');
}
} else if (')' == this.prevChar) {
this.write(' / ');
} else {
var ret = '';
if ('=' == this.prevChar || ':' == this.prevChar) {
ret += ' /';
} else {
ret += '/';
}
var escaped = false;
while (this.i < this.len - 1) {
this.i++;
var c = this.s.charAt(this.i);
if ('\\' == c) {
escaped = (escaped ? false : true);
}
ret += c;
if ('/' == c) {
if (!escaped) {
break;
}
}
if ('\\' != c) {
escaped = false;
}
}
this.write(ret);
}
};
this.comma = function ()
{
/*
* function arguments seperator
* array values seperator
* object values seperator
*/
this.write(', ');
var line = this.getCurrentLine();
if (line.replace(' ', '').length > 100) {
this.writeLine();
}
};
this.dot = function ()
{
this.write('.');
};
this.symbol1 = function (c)
{
if ('=' == this.prevChar && '!' == c) {
this.write(' '+c);
} else {
this.write(c);
}
};
this.symbol2 = function (c)
{
// && !p
// ===
if ('+' == c || '-' == c) {
if (c == this.nextChar || c == this.prevChar) {
this.write(c);
return;
}
}
var ss = (this.prevChar == ' ' ? '' : ' ');
var ss2 = ' ';
if ('(' == this.prevChar) {
ss = '';
ss2 = '';
}
if ('-' == c && ('>' == this.prevChar || '>' == this.prevChar)) {
this.write(' '+c);
return;
}
if (this.symbols2.indexOf(this.prevChar) != -1) {
if (this.symbols2.indexOf(this.nextChar) != -1) {
this.write(c + (this.nextChar == '!' ? ' ' : ''));
} else {
this.write(c + ss2);
}
} else {
if (this.symbols2.indexOf(this.nextChar) != -1) {
this.write(ss + c);
} else {
this.write(ss + c + ss2);
}
}
if ('=' == c && /^[\w\]]$/.test(this.prevNonWhite(this.i)) && /^[\w\'\"\[]$/.test(this.nextNonWhite(this.i))) {
this.isAssign = true;
}
};
this.alphanumeric = function (c)
{
/* /[a-zA-Z0-9_]/ == /\w/ */
if (this.lastWord) {
this.lastWord += c;
} else {
this.lastWord = c;
}
if (')' == this.prevChar) {
c = ' '+c;
}
this.write(c);
};
this.unknown = function (c)
{
//throw 'Unknown char: "'+c+'" , this.i = ' + this.i;
this.write(c);
};
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