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var url = require('url');
var inherits = require('util').inherits;
var path = require('path');
var marked = require('marked');
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;
}
inherits(GitBookRenderer, marked.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) {
// Don't build if it looks malicious
if (this.options.sanitize && this._unsanitized(href)) {
return '';
}
// Parsed version of the url
var parsed = url.parse(href);
var o = this._extra_options;
// Relative link, rewrite it to point to github repo
if(!parsed.protocol && parsed.path[0] != '/' && o && o.repo && o.dir) {
href = 'https://github.com/' + o.repo + '/blob' + path.normalize(path.join(
'/',
o.dir,
href
));
parsed = url.parse(href);
}
// 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(!parsed.protocol && parsed.path[0] != '/' && o && o.dir && o.outdir) {
_href = path.relative(o.outdir, path.normalize(path.join(
o.dir,
href
)));
}
return GitBookRenderer.super_.prototype.image.call(this, _href, title, text);
};
// Exports
module.exports = GitBookRenderer;
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