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-/*
-
- JS Beautifier
----------------
- $Date: 2008-04-21 16:13:36 +0300 (Mon, 21 Apr 2008) $
- $Revision: 53 $
-
-
- Written by Einars "elfz" Lielmanis, <elfz@laacz.lv>
- http://elfz.laacz.lv/beautify/
-
- Originally converted to javascript by Vital, <vital76@gmail.com>
- http://my.opera.com/Vital/blog/2007/11/21/javascript-beautify-on-javascript-translated
-
-
- You are free to use this in any way you want, in case you find this useful or working for you.
-
- Usage:
- js_beautify(js_source_text);
-
-*/
-
-
-function js_beautify(js_source_text, indent_size, indent_character)
-{
-
- var input, output, token_text, last_type, last_text, last_word, current_mode, modes, indent_level, indent_string;
- var whitespace, wordchar, punct, parser_pos, line_starters, in_case;
- var prefix, token_type;
-
- function print_newline(ignore_repeated)
- {
- ignore_repeated = typeof ignore_repeated === 'undefined' ? true: ignore_repeated;
-
- // remove trailing whitespace and indent
- while (output.length && (output[output.length - 1] === ' ' || output[output.length - 1] === indent_string)) {
- output.pop();
- }
-
- if (!output.length) {
- return; // no newline on start of file
- }
-
- if (output[output.length - 1] !== "\n" || !ignore_repeated) {
- output.push("\n");
- }
- for (var i = 0; i < indent_level; i++) {
- output.push(indent_string);
- }
- }
-
-
-
- function print_space()
- {
- var last_output = output.length ? output[output.length - 1] : ' ';
- if (last_output !== ' ' && last_output !== '\n' && last_output !== indent_string) { // prevent occassional duplicate space
- output.push(' ');
- }
- }
-
-
- function print_token()
- {
- output.push(token_text);
- }
-
- function indent()
- {
- indent_level++;
- }
-
-
- function unindent()
- {
- if (indent_level) {
- indent_level--;
- }
- }
-
-
- function remove_indent()
- {
- if (output.length && output[output.length - 1] === indent_string) {
- output.pop();
- }
- }
-
-
- function set_mode(mode)
- {
- modes.push(current_mode);
- current_mode = mode;
- }
-
-
- function restore_mode()
- {
- current_mode = modes.pop();
- }
-
-
- function in_array(what, arr)
- {
- for (var i = 0; i < arr.length; i++)
- {
- if (arr[i] === what) {
- return true;
- }
- }
- return false;
- }
-
-
-
- function get_next_token()
- {
- var n_newlines = 0;
- var c = '';
-
- do {
- if (parser_pos >= input.length) {
- return ['', 'TK_EOF'];
- }
- c = input.charAt(parser_pos);
-
- parser_pos += 1;
- if (c === "\n") {
- n_newlines += 1;
- }
- }
- while (in_array(c, whitespace));
-
- if (n_newlines > 1) {
- for (var i = 0; i < 2; i++) {
- print_newline(i === 0);
- }
- }
- var wanted_newline = (n_newlines === 1);
-
-
- if (in_array(c, wordchar)) {
- if (parser_pos < input.length) {
- while (in_array(input.charAt(parser_pos), wordchar)) {
- c += input.charAt(parser_pos);
- parser_pos += 1;
- if (parser_pos === input.length) {
- break;
- }
- }
- }
-
- // small and surprisingly unugly hack for 1E-10 representation
- if (parser_pos !== input.length && c.match(/^[0-9]+[Ee]$/) && input.charAt(parser_pos) === '-') {
- parser_pos += 1;
-
- var t = get_next_token(parser_pos);
- c += '-' + t[0];
- return [c, 'TK_WORD'];
- }
-
- if (c === 'in') { // hack for 'in' operator
- return [c, 'TK_OPERATOR'];
- }
- return [c, 'TK_WORD'];
- }
-
- if (c === '(' || c === '[') {
- return [c, 'TK_START_EXPR'];
- }
-
- if (c === ')' || c === ']') {
- return [c, 'TK_END_EXPR'];
- }
-
- if (c === '{') {
- return [c, 'TK_START_BLOCK'];
- }
-
- if (c === '}') {
- return [c, 'TK_END_BLOCK'];
- }
-
- if (c === ';') {
- return [c, 'TK_END_COMMAND'];
- }
-
- if (c === '/') {
- var comment = '';
- // peek for comment /* ... */
- if (input.charAt(parser_pos) === '*') {
- parser_pos += 1;
- if (parser_pos < input.length) {
- while (! (input.charAt(parser_pos) === '*' && input.charAt(parser_pos + 1) && input.charAt(parser_pos + 1) === '/') && parser_pos < input.length) {
- comment += input.charAt(parser_pos);
- parser_pos += 1;
- if (parser_pos >= input.length) {
- break;
- }
- }
- }
- parser_pos += 2;
- return ['/*' + comment + '*/', 'TK_BLOCK_COMMENT'];
- }
- // peek for comment // ...
- if (input.charAt(parser_pos) === '/') {
- comment = c;
- while (input.charAt(parser_pos) !== "\x0d" && input.charAt(parser_pos) !== "\x0a") {
- comment += input.charAt(parser_pos);
- parser_pos += 1;
- if (parser_pos >= input.length) {
- break;
- }
- }
- parser_pos += 1;
- if (wanted_newline) {
- print_newline();
- }
- return [comment, 'TK_COMMENT'];
- }
-
- }
-
- if (c === "'" || // string
- c === '"' || // string
- (c === '/' &&
- ((last_type === 'TK_WORD' && last_text === 'return') || (last_type === 'TK_START_EXPR' || last_type === 'TK_END_BLOCK' || last_type === 'TK_OPERATOR' || last_type === 'TK_EOF' || last_type === 'TK_END_COMMAND')))) { // regexp
- var sep = c;
- var esc = false;
- c = '';
-
- if (parser_pos < input.length) {
-
- while (esc || input.charAt(parser_pos) !== sep) {
- c += input.charAt(parser_pos);
- if (!esc) {
- esc = input.charAt(parser_pos) === '\\';
- } else {
- esc = false;
- }
- parser_pos += 1;
- if (parser_pos >= input.length) {
- break;
- }
- }
-
- }
-
- parser_pos += 1;
- if (last_type === 'TK_END_COMMAND') {
- print_newline();
- }
- return [sep + c + sep, 'TK_STRING'];
- }
-
- if (in_array(c, punct)) {
- while (parser_pos < input.length && in_array(c + input.charAt(parser_pos), punct)) {
- c += input.charAt(parser_pos);
- parser_pos += 1;
- if (parser_pos >= input.length) {
- break;
- }
- }
- return [c, 'TK_OPERATOR'];
- }
-
- return [c, 'TK_UNKNOWN'];
- }
-
-
- //----------------------------------
-
- indent_character = indent_character || ' ';
- indent_size = indent_size || 4;
-
- indent_string = '';
- while (indent_size--) {
- indent_string += indent_character;
- }
-
- input = js_source_text;
-
- last_word = ''; // last 'TK_WORD' passed
- last_type = 'TK_START_EXPR'; // last token type
- last_text = ''; // last token text
- output = [];
-
- whitespace = "\n\r\t ".split('');
- wordchar = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_$'.split('');
- punct = '+ - * / % & ++ -- = += -= *= /= %= == === != !== > < >= <= >> << >>> >>>= >>= <<= && &= | || ! !! , : ? ^ ^= |='.split(' ');
-
- // words which should always start on new line.
- line_starters = 'continue,try,throw,return,var,if,switch,case,default,for,while,break,function'.split(',');
-
- // states showing if we are currently in expression (i.e. "if" case) - 'EXPRESSION', or in usual block (like, procedure), 'BLOCK'.
- // some formatting depends on that.
- current_mode = 'BLOCK';
- modes = [current_mode];
-
- indent_level = 0;
- parser_pos = 0; // parser position
- in_case = false; // flag for parser that case/default has been processed, and next colon needs special attention
- while (true) {
- var t = get_next_token(parser_pos);
- token_text = t[0];
- token_type = t[1];
- if (token_type === 'TK_EOF') {
- break;
- }
-
- switch (token_type) {
-
- case 'TK_START_EXPR':
-
- set_mode('EXPRESSION');
- if (last_type === 'TK_END_EXPR' || last_type === 'TK_START_EXPR') {
- // do nothing on (( and )( and ][ and ]( ..
- } else if (last_type !== 'TK_WORD' && last_type !== 'TK_OPERATOR') {
- print_space();
- } else if (in_array(last_word, line_starters) && last_word !== 'function') {
- print_space();
- }
- print_token();
- break;
-
- case 'TK_END_EXPR':
-
- print_token();
- restore_mode();
- break;
-
- case 'TK_START_BLOCK':
-
- set_mode('BLOCK');
- if (last_type !== 'TK_OPERATOR' && last_type !== 'TK_START_EXPR') {
- if (last_type === 'TK_START_BLOCK') {
- print_newline();
- } else {
- print_space();
- }
- }
- print_token();
- indent();
- break;
-
- case 'TK_END_BLOCK':
- if (last_type === 'TK_START_BLOCK') {
- // nothing
- unindent();
- } else {
- unindent();
- print_newline();
- }
- print_token();
- restore_mode();
- break;
-
- case 'TK_WORD':
-
- if (token_text === 'case' || token_text === 'default') {
- if (last_text === ':') {
- // switch cases following one another
- remove_indent();
- } else {
- // case statement starts in the same line where switch
- unindent();
- print_newline();
- indent();
- }
- print_token();
- in_case = true;
- break;
- }
-
- prefix = 'NONE';
- if (last_type === 'TK_END_BLOCK') {
- if (!in_array(token_text.toLowerCase(), ['else', 'catch', 'finally'])) {
- prefix = 'NEWLINE';
- } else {
- prefix = 'SPACE';
- print_space();
- }
- } else if (last_type === 'TK_END_COMMAND' && current_mode === 'BLOCK') {
- prefix = 'NEWLINE';
- } else if (last_type === 'TK_END_COMMAND' && current_mode === 'EXPRESSION') {
- prefix = 'SPACE';
- } else if (last_type === 'TK_WORD') {
- prefix = 'SPACE';
- } else if (last_type === 'TK_START_BLOCK') {
- prefix = 'NEWLINE';
- } else if (last_type === 'TK_END_EXPR') {
- print_space();
- prefix = 'NEWLINE';
- }
-
- if (in_array(token_text, line_starters) || prefix === 'NEWLINE') {
-
- if (last_text === 'else') {
- // no need to force newline on else break
- print_space();
- } else if ((last_type === 'TK_START_EXPR' || last_text === '=') && token_text === 'function') {
- // no need to force newline on 'function': (function
- // DONOTHING
- } else if (last_type === 'TK_WORD' && (last_text === 'return' || last_text === 'throw')) {
- // no newline between 'return nnn'
- print_space();
- } else if (last_type !== 'TK_END_EXPR') {
- if ((last_type !== 'TK_START_EXPR' || token_text !== 'var') && last_text !== ':') {
- // no need to force newline on 'var': for (var x = 0...)
- if (token_text === 'if' && last_type === 'TK_WORD' && last_word === 'else') {
- // no newline for } else if {
- print_space();
- } else {
- print_newline();
- }
- }
- }
- } else if (prefix === 'SPACE') {
- print_space();
- }
- print_token();
- last_word = token_text;
- break;
-
- case 'TK_END_COMMAND':
-
- print_token();
- break;
-
- case 'TK_STRING':
-
- if (last_type === 'TK_START_BLOCK' || last_type === 'TK_END_BLOCK') {
- print_newline();
- } else if (last_type === 'TK_WORD') {
- print_space();
- }
- print_token();
- break;
-
- case 'TK_OPERATOR':
-
- var start_delim = true;
- var end_delim = true;
-
- if (token_text === ':' && in_case) {
- print_token(); // colon really asks for separate treatment
- print_newline();
- break;
- }
-
- in_case = false;
-
- if (token_text === ',') {
- if (last_type === 'TK_END_BLOCK') {
- print_token();
- print_newline();
- } else {
- if (current_mode === 'BLOCK') {
- print_token();
- print_newline();
- } else {
- print_token();
- print_space();
- }
- }
- break;
- } else if (token_text === '--' || token_text === '++') { // unary operators special case
- if (last_text === ';') {
- // space for (;; ++i)
- start_delim = true;
- end_delim = false;
- } else {
- start_delim = false;
- end_delim = false;
- }
- } else if (token_text === '!' && last_type === 'TK_START_EXPR') {
- // special case handling: if (!a)
- start_delim = false;
- end_delim = false;
- } else if (last_type === 'TK_OPERATOR') {
- start_delim = false;
- end_delim = false;
- } else if (last_type === 'TK_END_EXPR') {
- start_delim = true;
- end_delim = true;
- } else if (token_text === '.') {
- // decimal digits or object.property
- start_delim = false;
- end_delim = false;
-
- } else if (token_text === ':') {
- // zz: xx
- // can't differentiate ternary op, so for now it's a ? b: c; without space before colon
- start_delim = false;
- }
- if (start_delim) {
- print_space();
- }
-
- print_token();
-
- if (end_delim) {
- print_space();
- }
- break;
-
- case 'TK_BLOCK_COMMENT':
-
- print_newline();
- print_token();
- print_newline();
- break;
-
- case 'TK_COMMENT':
-
- // print_newline();
- print_space();
- print_token();
- print_newline();
- break;
-
- case 'TK_UNKNOWN':
- print_token();
- break;
- }
-
- last_type = token_type;
- last_text = token_text;
- }
-
- return output.join('');
-
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-25 10:49:46 +0000