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var url = require('url');
var _ = require('lodash');
var inherits = require('util').inherits;
var links = require('../utils').links;
var kramed = require('kramed');
var rendererId = 0;
function GitBookRenderer(options, extra_options) {
if(!(this instanceof GitBookRenderer)) {
return new GitBookRenderer(options, extra_options);
}
GitBookRenderer.super_.call(this, options);
this._extra_options = extra_options;
this.quizRowId = 0;
this.id = rendererId++;
this.quizIndex = 0;
}
inherits(GitBookRenderer, kramed.Renderer);
GitBookRenderer.prototype._unsanitized = function(href) {
var prot = '';
try {
prot = decodeURIComponent(unescape(href))
.replace(/[^\w:]/g, '')
.toLowerCase();
} catch (e) {
return true;
}
if(prot.indexOf('javascript:') === 0) {
return true;
}
return false;
};
GitBookRenderer.prototype.link = function(href, title, text) {
// Our "fixed" href
var _href = href;
// Don't build if it looks malicious
if (this.options.sanitize && this._unsanitized(href)) {
return text;
}
// Parsed version of the url
var parsed = url.parse(href);
var o = this._extra_options;
var extname = _.last(parsed.path.split("."));
// Relative link, rewrite it to point to github repo
if(links.isRelative(_href) && extname == "md") {
_href = links.toAbsolute(_href, o.dir || "./", o.outdir || "./");
_href = _href.replace(".md", ".html");
}
// Generate HTML for link
var out = '<a href="' + _href + '"';
// Title if no null
if (title) {
out += ' title="' + title + '"';
}
// Target blank if external
if(parsed.protocol) {
out += ' target="_blank"';
}
out += '>' + text + '</a>';
return out;
};
GitBookRenderer.prototype.image = function(href, title, text) {
// Our "fixed" href
var _href = href;
// Parsed version of the url
var parsed = url.parse(href);
// Options
var o = this._extra_options;
// Relative image, rewrite it depending output
if(links.isRelative(href) && o && o.dir && o.outdir) {
// o.dir: directory parent of the file currently in rendering process
// o.outdir: directory parent from the html output
_href = links.toAbsolute(_href, o.dir, o.outdir);
}
return GitBookRenderer.super_.prototype.image.call(this, _href, title, text);
};
GitBookRenderer.prototype.tablerow = function(content) {
this.quizRowId += 1;
return GitBookRenderer.super_.prototype.tablerow(content);
};
var fieldRegex = /^([(\[])([ x])[\])]/;
GitBookRenderer.prototype._createCheckboxAndRadios = function(text) {
var match = fieldRegex.exec(text);
if (!match) {
return text;
}
//fix radio input uncheck failed
var quizFieldName='quiz-row-' + this.id + '-' + this.quizRowId ;
var quizIdentifier = quizFieldName + '-' + this.quizIndex++;
var field = "<input name='" + quizFieldName + "' id='" + quizIdentifier + "' type='";
field += match[1] === '(' ? "radio" : "checkbox";
field += match[2] === 'x' ? "' checked/>" : "'/>";
var splittedText = text.split(fieldRegex);
var length = splittedText.length;
var label = '<label class="quiz-label" for="' + quizIdentifier + '">' + splittedText[length - 1] + '</label>';
return text.replace(fieldRegex, field).replace(splittedText[length - 1], label);
};
GitBookRenderer.prototype.tablecell = function(content, flags) {
return GitBookRenderer.super_.prototype.tablecell(this._createCheckboxAndRadios(content), flags);
};
GitBookRenderer.prototype.listitem = function(text) {
return GitBookRenderer.super_.prototype.listitem(this._createCheckboxAndRadios(text));
};
GitBookRenderer.prototype.code = function(code, lang, escaped) {
return GitBookRenderer.super_.prototype.code.call(
this,
code,
lang,
escaped
);
};
GitBookRenderer.prototype.heading = function(text, level, raw) {
var id = this.options.headerPrefix + raw.toLowerCase().replace(/[^\w -]+/g, '').replace(/ /g, '-');
return '<h' + level + ' id="' + id + '">' + text + '</h' + level + '>\n';
};
// Exports
module.exports = GitBookRenderer;
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