编辑文件 - class.bbcode.js

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路径: /usr/share/zabbix/js/class.bbcode.js
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/*
** Zabbix
** Copyright (C) 2001-2021 Zabbix SIA
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
**/

var BBCode = {
	opentags: null, // open tag stack
	crlf2br: null, // convert CRLF to ?
	noparse: null, // ignore BBCode tags?
	urlstart: null, // beginning of the URL if zero or greater (ignored if -1)

RE: {
		'bbcode': /^\/?(?:b|i|u|pre|code|color|size|noparse|url)$/, // BBcode tags
		'color': /^(:?#(?:[0-9a-f]{3})?[0-9a-f]{3})$/i, // color names or hex color
		'uri': /^[-;\/\?:@&=\+\$,_\.!~\*'%0-9a-z]{1,512}$/i, // reserved, unreserved, escaped and alphanumeric [RFC2396]
		'format': /([\r\n])|(?:\[([a-z]{1,16})(?:=([^\x00-\x1F''<>\[\]]{1,256}))?\])|(?:\[\/([a-z]{1,16})\])/ig // main regular expression: CRLF, [tag=option], [tag] or [/tag]
	},

// post must be HTML-encoded
	Parse: function(post) {
		this.crlf2br = false;
		this.noparse = false;
		this.urlstart = -1;
		this.opentags = [];

var result = post.replace(this.RE.format, this.toHtml.bind(this));

if (this.opentags.length) {
			var endtags = '';

if (this.opentags[this.opentags.length-1].bbtag == 'url') {
				this.opentags.pop();
				endtags += '\'>' + post.substr(this.urlstart, post.length-this.urlstart) + '</a>';
			}

while (this.opentags.length) {
				endtags += this.opentags.pop().etag;
			}
		}

return endtags ? result + endtags : result;
	},

// check if it's a valid BBCode tag
	isValidTag: function(str) {
		if (empty(str)) {
			return false;
		}

return this.RE.bbcode.test(str);
	},

toHtml: function(mstr, crlf, tag, option, tagEnd, offset, string) {
		if (!empty(crlf)) {
			if (!this.crlf2br) {
				return mstr;
			}

if (crlf == '\r') {
				return '';
			}
			else if (crlf == '\n') {
				return ' ';
			}
		}

// handle start tags
		if (this.isValidTag(tag)) {
			if (this.noparse) {
				return '[' + tag + ']';
			}

if (!empty(this.opentags) && this.opentags[this.opentags.length - 1].bbtag == 'url' && this.urlstart >= 0) {
				return '[' + tag + ']';
			}

switch (tag) {
				case 'noparse':
					this.noparse = true;
					return '';
				case 'url':
					this.opentags.push({'bbtag' : tag, 'etag' : '</a>'});

if (option && this.RE.uri.test(option)) {
						this.urlstart = -1;
						return '<a href="' + option + '">';
					}

this.urlstart = mstr.length + offset;

return '<a href="';
				case 'code':
					this.opentags.push({'bbtag' : tag, 'etag' : '</code></pre>'});
					this.noparse = false;
					return '<pre><code>';
				case 'pre':
					this.opentags.push({'bbtag' : tag, 'etag' : '</pre>'});
					this.noparse = false;
					return '<pre>';
				case 'color':
					if (!option || !this.RE.color.test(option)) {
						option = 'inherit';
					}

this.opentags.push({'bbtag' : tag, 'etag' : ''});
					return '';
				case 'size':
					option = option || '7';

this.opentags.push({'bbtag' : tag, 'etag' : ''});
					return '';
				default:
					this.opentags.push({'bbtag' : tag, 'etag' : '</' + tag + '>'});
					return '<' + tag + '>';
			}
		}

// process end tags
		if (this.isValidTag(tagEnd)) {
			if (this.noparse) {
				if (tagEnd == 'noparse') {
					this.noparse = false;
					return '';
				}

return '[/' + tagEnd + ']';
			}

if (!this.opentags.length || this.opentags[this.opentags.length - 1].bbtag != tagEnd) {
				return '[/' + tagEnd + ']';
			}

if (tagEnd == 'url') {
				if (this.urlstart > 0) {
					return '">' + string.substr(this.urlstart, offset - this.urlstart) + this.opentags.pop().etag;
				}
				return this.opentags.pop().etag;
			}
			else if (tagEnd == 'code' || tagEnd == 'pre') {
				this.crlf2br = true;
			}

return this.opentags.pop().etag;
		}

return mstr;
	}
};

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