536 lines
20 KiB
JavaScript
536 lines
20 KiB
JavaScript
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/*
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Style HTML
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---------------
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Written by Nochum Sossonko, (nsossonko@hotmail.com)
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Based on code initially developed by: Einar Lielmanis, <elfz@laacz.lv>
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http://jsbeautifier.org/
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You are free to use this in any way you want, in case you find this useful or working for you.
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Usage:
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style_html(html_source);
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style_html(html_source, options);
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The options are:
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indent_size (default 4) — indentation size,
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indent_char (default space) — character to indent with,
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max_char (default 70) - maximum amount of characters per line,
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brace_style (default "collapse") - "collapse" | "expand" | "end-expand"
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put braces on the same line as control statements (default), or put braces on own line (Allman / ANSI style), or just put end braces on own line.
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unformatted (defaults to inline tags) - list of tags, that shouldn't be reformatted
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indent_scripts (default normal) - "keep"|"separate"|"normal"
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e.g.
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style_html(html_source, {
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'indent_size': 2,
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'indent_char': ' ',
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'max_char': 78,
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'brace_style': 'expand',
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'unformatted': ['a', 'sub', 'sup', 'b', 'i', 'u']
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});
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*/
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function style_html(html_source, options) {
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//Wrapper function to invoke all the necessary constructors and deal with the output.
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var multi_parser,
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indent_size,
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indent_character,
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max_char,
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brace_style,
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unformatted;
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options = options || {};
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indent_size = options.indent_size || 4;
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indent_character = options.indent_char || ' ';
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brace_style = options.brace_style || 'collapse';
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max_char = options.max_char == 0 ? Infinity : options.max_char || 70;
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unformatted = options.unformatted || ['a', 'span', 'bdo', 'em', 'strong', 'dfn', 'code', 'samp', 'kbd', 'var', 'cite', 'abbr', 'acronym', 'q', 'sub', 'sup', 'tt', 'i', 'b', 'big', 'small', 'u', 's', 'strike', 'font', 'ins', 'del', 'pre', 'address', 'dt', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6'];
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function Parser() {
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this.pos = 0; //Parser position
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this.token = '';
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this.current_mode = 'CONTENT'; //reflects the current Parser mode: TAG/CONTENT
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this.tags = { //An object to hold tags, their position, and their parent-tags, initiated with default values
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parent: 'parent1',
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parentcount: 1,
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parent1: ''
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};
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this.tag_type = '';
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this.token_text = this.last_token = this.last_text = this.token_type = '';
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this.Utils = { //Uilities made available to the various functions
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whitespace: "\n\r\t ".split(''),
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single_token: 'br,input,link,meta,!doctype,basefont,base,area,hr,wbr,param,img,isindex,?xml,embed,?php,?,?='.split(','), //all the single tags for HTML
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extra_liners: 'head,body,/html'.split(','), //for tags that need a line of whitespace before them
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in_array: function (what, arr) {
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for (var i=0; i<arr.length; i++) {
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if (what === arr[i]) {
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return true;
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}
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}
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return false;
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}
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}
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this.get_content = function () { //function to capture regular content between tags
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var input_char = '',
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content = [],
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space = false; //if a space is needed
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while (this.input.charAt(this.pos) !== '<') {
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if (this.pos >= this.input.length) {
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return content.length?content.join(''):['', 'TK_EOF'];
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}
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input_char = this.input.charAt(this.pos);
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this.pos++;
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this.line_char_count++;
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if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
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if (content.length) {
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space = true;
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}
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this.line_char_count--;
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continue; //don't want to insert unnecessary space
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}
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else if (space) {
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if (this.line_char_count >= this.max_char) { //insert a line when the max_char is reached
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content.push('\n');
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for (var i=0; i<this.indent_level; i++) {
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content.push(this.indent_string);
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}
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this.line_char_count = 0;
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}
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else{
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content.push(' ');
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this.line_char_count++;
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}
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space = false;
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}
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content.push(input_char); //letter at-a-time (or string) inserted to an array
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}
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return content.length?content.join(''):'';
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}
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this.get_contents_to = function (name) { //get the full content of a script or style to pass to js_beautify
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if (this.pos == this.input.length) {
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return ['', 'TK_EOF'];
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}
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var input_char = '';
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var content = '';
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var reg_match = new RegExp('\<\/' + name + '\\s*\>', 'igm');
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reg_match.lastIndex = this.pos;
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var reg_array = reg_match.exec(this.input);
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var end_script = reg_array?reg_array.index:this.input.length; //absolute end of script
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if(this.pos < end_script) { //get everything in between the script tags
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content = this.input.substring(this.pos, end_script);
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this.pos = end_script;
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}
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return content;
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}
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this.record_tag = function (tag){ //function to record a tag and its parent in this.tags Object
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if (this.tags[tag + 'count']) { //check for the existence of this tag type
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this.tags[tag + 'count']++;
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this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
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}
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else { //otherwise initialize this tag type
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this.tags[tag + 'count'] = 1;
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this.tags[tag + this.tags[tag + 'count']] = this.indent_level; //and record the present indent level
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}
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this.tags[tag + this.tags[tag + 'count'] + 'parent'] = this.tags.parent; //set the parent (i.e. in the case of a div this.tags.div1parent)
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this.tags.parent = tag + this.tags[tag + 'count']; //and make this the current parent (i.e. in the case of a div 'div1')
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}
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this.retrieve_tag = function (tag) { //function to retrieve the opening tag to the corresponding closer
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if (this.tags[tag + 'count']) { //if the openener is not in the Object we ignore it
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var temp_parent = this.tags.parent; //check to see if it's a closable tag.
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while (temp_parent) { //till we reach '' (the initial value);
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if (tag + this.tags[tag + 'count'] === temp_parent) { //if this is it use it
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break;
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}
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temp_parent = this.tags[temp_parent + 'parent']; //otherwise keep on climbing up the DOM Tree
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}
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if (temp_parent) { //if we caught something
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this.indent_level = this.tags[tag + this.tags[tag + 'count']]; //set the indent_level accordingly
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this.tags.parent = this.tags[temp_parent + 'parent']; //and set the current parent
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}
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delete this.tags[tag + this.tags[tag + 'count'] + 'parent']; //delete the closed tags parent reference...
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delete this.tags[tag + this.tags[tag + 'count']]; //...and the tag itself
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if (this.tags[tag + 'count'] == 1) {
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delete this.tags[tag + 'count'];
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}
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else {
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this.tags[tag + 'count']--;
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}
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}
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}
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this.get_tag = function () { //function to get a full tag and parse its type
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var input_char = '',
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content = [],
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space = false,
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tag_start, tag_end;
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do {
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if (this.pos >= this.input.length) {
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return content.length?content.join(''):['', 'TK_EOF'];
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}
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input_char = this.input.charAt(this.pos);
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this.pos++;
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this.line_char_count++;
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if (this.Utils.in_array(input_char, this.Utils.whitespace)) { //don't want to insert unnecessary space
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space = true;
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this.line_char_count--;
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continue;
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}
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if (input_char === "'" || input_char === '"') {
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if (!content[1] || content[1] !== '!') { //if we're in a comment strings don't get treated specially
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input_char += this.get_unformatted(input_char);
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space = true;
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}
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}
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if (input_char === '=') { //no space before =
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space = false;
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}
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if (content.length && content[content.length-1] !== '=' && input_char !== '>'
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&& space) { //no space after = or before >
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if (this.line_char_count >= this.max_char) {
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this.print_newline(false, content);
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this.line_char_count = 0;
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}
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else {
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content.push(' ');
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this.line_char_count++;
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}
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space = false;
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}
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if (input_char === '<') {
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tag_start = this.pos - 1;
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}
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content.push(input_char); //inserts character at-a-time (or string)
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} while (input_char !== '>');
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var tag_complete = content.join('');
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var tag_index;
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if (tag_complete.indexOf(' ') != -1) { //if there's whitespace, thats where the tag name ends
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tag_index = tag_complete.indexOf(' ');
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}
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else { //otherwise go with the tag ending
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tag_index = tag_complete.indexOf('>');
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}
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var tag_check = tag_complete.substring(1, tag_index).toLowerCase();
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if (tag_complete.charAt(tag_complete.length-2) === '/' ||
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this.Utils.in_array(tag_check, this.Utils.single_token)) { //if this tag name is a single tag type (either in the list or has a closing /)
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this.tag_type = 'SINGLE';
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}
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else if (tag_check === 'script') { //for later script handling
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this.record_tag(tag_check);
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this.tag_type = 'SCRIPT';
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}
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else if (tag_check === 'style') { //for future style handling (for now it justs uses get_content)
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this.record_tag(tag_check);
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this.tag_type = 'STYLE';
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}
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else if (this.Utils.in_array(tag_check, unformatted)) { // do not reformat the "unformatted" tags
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var comment = this.get_unformatted('</'+tag_check+'>', tag_complete); //...delegate to get_unformatted function
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content.push(comment);
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// Preserve collapsed whitespace either before or after this tag.
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if (tag_start > 0 && this.Utils.in_array(this.input.charAt(tag_start - 1), this.Utils.whitespace)){
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content.splice(0, 0, this.input.charAt(tag_start - 1));
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}
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tag_end = this.pos - 1;
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if (this.Utils.in_array(this.input.charAt(tag_end + 1), this.Utils.whitespace)){
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content.push(this.input.charAt(tag_end + 1));
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}
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this.tag_type = 'SINGLE';
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}
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else if (tag_check.charAt(0) === '!') { //peek for <!-- comment
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if (tag_check.indexOf('[if') != -1) { //peek for <!--[if conditional comment
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if (tag_complete.indexOf('!IE') != -1) { //this type needs a closing --> so...
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var comment = this.get_unformatted('-->', tag_complete); //...delegate to get_unformatted
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content.push(comment);
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}
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this.tag_type = 'START';
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}
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else if (tag_check.indexOf('[endif') != -1) {//peek for <!--[endif end conditional comment
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this.tag_type = 'END';
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this.unindent();
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}
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else if (tag_check.indexOf('[cdata[') != -1) { //if it's a <[cdata[ comment...
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var comment = this.get_unformatted(']]>', tag_complete); //...delegate to get_unformatted function
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content.push(comment);
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this.tag_type = 'SINGLE'; //<![CDATA[ comments are treated like single tags
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}
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else {
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var comment = this.get_unformatted('-->', tag_complete);
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content.push(comment);
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this.tag_type = 'SINGLE';
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}
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}
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else {
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if (tag_check.charAt(0) === '/') { //this tag is a double tag so check for tag-ending
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this.retrieve_tag(tag_check.substring(1)); //remove it and all ancestors
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this.tag_type = 'END';
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}
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else { //otherwise it's a start-tag
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this.record_tag(tag_check); //push it on the tag stack
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this.tag_type = 'START';
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}
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if (this.Utils.in_array(tag_check, this.Utils.extra_liners)) { //check if this double needs an extra line
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this.print_newline(true, this.output);
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}
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}
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return content.join(''); //returns fully formatted tag
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}
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this.get_unformatted = function (delimiter, orig_tag) { //function to return unformatted content in its entirety
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if (orig_tag && orig_tag.toLowerCase().indexOf(delimiter) != -1) {
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return '';
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}
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var input_char = '';
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var content = '';
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var space = true;
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do {
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if (this.pos >= this.input.length) {
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return content;
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}
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input_char = this.input.charAt(this.pos);
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this.pos++
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if (this.Utils.in_array(input_char, this.Utils.whitespace)) {
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if (!space) {
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this.line_char_count--;
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continue;
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}
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if (input_char === '\n' || input_char === '\r') {
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content += '\n';
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/* Don't change tab indention for unformatted blocks. If using code for html editing, this will greatly affect <pre> tags if they are specified in the 'unformatted array'
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for (var i=0; i<this.indent_level; i++) {
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content += this.indent_string;
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}
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space = false; //...and make sure other indentation is erased
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*/
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this.line_char_count = 0;
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continue;
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}
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}
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content += input_char;
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this.line_char_count++;
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space = true;
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} while (content.toLowerCase().indexOf(delimiter) == -1);
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return content;
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}
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|
|
||
|
|
this.get_token = function () { //initial handler for token-retrieval
|
||
|
|
var token;
|
||
|
|
|
||
|
|
if (this.last_token === 'TK_TAG_SCRIPT' || this.last_token === 'TK_TAG_STYLE') { //check if we need to format javascript
|
||
|
|
var type = this.last_token.substr(7)
|
||
|
|
token = this.get_contents_to(type);
|
||
|
|
if (typeof token !== 'string') {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
return [token, 'TK_' + type];
|
||
|
|
}
|
||
|
|
if (this.current_mode === 'CONTENT') {
|
||
|
|
token = this.get_content();
|
||
|
|
if (typeof token !== 'string') {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return [token, 'TK_CONTENT'];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.current_mode === 'TAG') {
|
||
|
|
token = this.get_tag();
|
||
|
|
if (typeof token !== 'string') {
|
||
|
|
return token;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
var tag_name_type = 'TK_TAG_' + this.tag_type;
|
||
|
|
return [token, tag_name_type];
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this.get_full_indent = function (level) {
|
||
|
|
level = this.indent_level + level || 0;
|
||
|
|
if (level < 1)
|
||
|
|
return '';
|
||
|
|
|
||
|
|
return Array(level + 1).join(this.indent_string);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
this.printer = function (js_source, indent_character, indent_size, max_char, brace_style) { //handles input/output and some other printing functions
|
||
|
|
|
||
|
|
this.input = js_source || ''; //gets the input for the Parser
|
||
|
|
this.output = [];
|
||
|
|
this.indent_character = indent_character;
|
||
|
|
this.indent_string = '';
|
||
|
|
this.indent_size = indent_size;
|
||
|
|
this.brace_style = brace_style;
|
||
|
|
this.indent_level = 0;
|
||
|
|
this.max_char = max_char;
|
||
|
|
this.line_char_count = 0; //count to see if max_char was exceeded
|
||
|
|
|
||
|
|
for (var i=0; i<this.indent_size; i++) {
|
||
|
|
this.indent_string += this.indent_character;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.print_newline = function (ignore, arr) {
|
||
|
|
this.line_char_count = 0;
|
||
|
|
if (!arr || !arr.length) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
if (!ignore) { //we might want the extra line
|
||
|
|
while (this.Utils.in_array(arr[arr.length-1], this.Utils.whitespace)) {
|
||
|
|
arr.pop();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
arr.push('\n');
|
||
|
|
for (var i=0; i<this.indent_level; i++) {
|
||
|
|
arr.push(this.indent_string);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
this.print_token = function (text) {
|
||
|
|
this.output.push(text);
|
||
|
|
}
|
||
|
|
|
||
|
|
this.indent = function () {
|
||
|
|
this.indent_level++;
|
||
|
|
}
|
||
|
|
|
||
|
|
this.unindent = function () {
|
||
|
|
if (this.indent_level > 0) {
|
||
|
|
this.indent_level--;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return this;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*_____________________--------------------_____________________*/
|
||
|
|
|
||
|
|
multi_parser = new Parser(); //wrapping functions Parser
|
||
|
|
multi_parser.printer(html_source, indent_character, indent_size, max_char, brace_style); //initialize starting values
|
||
|
|
|
||
|
|
while (true) {
|
||
|
|
var t = multi_parser.get_token();
|
||
|
|
multi_parser.token_text = t[0];
|
||
|
|
multi_parser.token_type = t[1];
|
||
|
|
|
||
|
|
if (multi_parser.token_type === 'TK_EOF') {
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (multi_parser.token_type) {
|
||
|
|
case 'TK_TAG_START':
|
||
|
|
multi_parser.print_newline(false, multi_parser.output);
|
||
|
|
multi_parser.print_token(multi_parser.token_text);
|
||
|
|
multi_parser.indent();
|
||
|
|
multi_parser.current_mode = 'CONTENT';
|
||
|
|
break;
|
||
|
|
case 'TK_TAG_STYLE':
|
||
|
|
case 'TK_TAG_SCRIPT':
|
||
|
|
multi_parser.print_newline(false, multi_parser.output);
|
||
|
|
multi_parser.print_token(multi_parser.token_text);
|
||
|
|
multi_parser.current_mode = 'CONTENT';
|
||
|
|
break;
|
||
|
|
case 'TK_TAG_END':
|
||
|
|
//Print new line only if the tag has no content and has child
|
||
|
|
if (multi_parser.last_token === 'TK_CONTENT' && multi_parser.last_text === '') {
|
||
|
|
var tag_name = multi_parser.token_text.match(/\w+/)[0];
|
||
|
|
var tag_extracted_from_last_output = multi_parser.output[multi_parser.output.length -1].match(/<\s*(\w+)/);
|
||
|
|
if (tag_extracted_from_last_output === null || tag_extracted_from_last_output[1] !== tag_name)
|
||
|
|
multi_parser.print_newline(true, multi_parser.output);
|
||
|
|
}
|
||
|
|
multi_parser.print_token(multi_parser.token_text);
|
||
|
|
multi_parser.current_mode = 'CONTENT';
|
||
|
|
break;
|
||
|
|
case 'TK_TAG_SINGLE':
|
||
|
|
// Don't add a newline before elements that should remain unformatted.
|
||
|
|
var tag_check = multi_parser.token_text.match(/^\s*<([a-z]+)/i);
|
||
|
|
if (!tag_check || !multi_parser.Utils.in_array(tag_check[1], unformatted)){
|
||
|
|
multi_parser.print_newline(false, multi_parser.output);
|
||
|
|
}
|
||
|
|
multi_parser.print_token(multi_parser.token_text);
|
||
|
|
multi_parser.current_mode = 'CONTENT';
|
||
|
|
break;
|
||
|
|
case 'TK_CONTENT':
|
||
|
|
if (multi_parser.token_text !== '') {
|
||
|
|
multi_parser.print_token(multi_parser.token_text);
|
||
|
|
}
|
||
|
|
multi_parser.current_mode = 'TAG';
|
||
|
|
break;
|
||
|
|
case 'TK_STYLE':
|
||
|
|
case 'TK_SCRIPT':
|
||
|
|
if (multi_parser.token_text !== '') {
|
||
|
|
multi_parser.output.push('\n');
|
||
|
|
var text = multi_parser.token_text;
|
||
|
|
if (multi_parser.token_type == 'TK_SCRIPT') {
|
||
|
|
var _beautifier = typeof js_beautify == 'function' && js_beautify;
|
||
|
|
} else if (multi_parser.token_type == 'TK_STYLE') {
|
||
|
|
var _beautifier = typeof css_beautify == 'function' && css_beautify;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (options.indent_scripts == "keep") {
|
||
|
|
var script_indent_level = 0;
|
||
|
|
} else if (options.indent_scripts == "separate") {
|
||
|
|
var script_indent_level = -multi_parser.indent_level;
|
||
|
|
} else {
|
||
|
|
var script_indent_level = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
var indentation = multi_parser.get_full_indent(script_indent_level);
|
||
|
|
if (_beautifier) {
|
||
|
|
// call the Beautifier if avaliable
|
||
|
|
text = _beautifier(text.replace(/^\s*/, indentation), options);
|
||
|
|
} else {
|
||
|
|
// simply indent the string otherwise
|
||
|
|
var white = text.match(/^\s*/)[0];
|
||
|
|
var _level = white.match(/[^\n\r]*$/)[0].split(multi_parser.indent_string).length - 1;
|
||
|
|
var reindent = multi_parser.get_full_indent(script_indent_level -_level);
|
||
|
|
text = text.replace(/^\s*/, indentation)
|
||
|
|
.replace(/\r\n|\r|\n/g, '\n' + reindent)
|
||
|
|
.replace(/\s*$/, '');
|
||
|
|
}
|
||
|
|
if (text) {
|
||
|
|
multi_parser.print_token(text);
|
||
|
|
multi_parser.print_newline(true, multi_parser.output);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
multi_parser.current_mode = 'TAG';
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
multi_parser.last_token = multi_parser.token_type;
|
||
|
|
multi_parser.last_text = multi_parser.token_text;
|
||
|
|
}
|
||
|
|
return multi_parser.output.join('');
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
prettyPrint: style_html
|
||
|
|
};
|