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var _ = require('lodash');
var path = require('path');
var parsers = require('gitbook-parsers');
var error = require('../utils/error');
/*
A page represent a parsable file in the book (Markdown, Asciidoc, etc)
*/
function Page(book, filename) {
if (!(this instanceof Page)) return new Page(book, filename);
var extension;
_.bindAll(this);
this.book = book;
this.log = this.book.log;
this.content = '';
this.path = filename;
this.rawPath = this.book.resolve(filename);
// Can we parse it?
extension = path.extname(this.path);
this.parser = parsers.get(extension);
if (!this.parser) throw error.ParsingError(new Error('Can\'t parse file "'+this.path+'"'));
this.type = this.parser.name;
}
// Return the filename of the page with another extension
// "README.md" -> "README.html"
Page.prototype.withExtension = function(ext) {
return path.join(
path.dirname(this.path),
path.basename(this.path, path.extname(this.path)) + ext
);
};
// Update content of the page
Page.prototype.update = function(content) {
this.content = content;
};
// Read the page as a string
Page.prototype.read = function() {
return this.book.readFile(this.path)
.then(this.update);
};
// Parse the page and return its content
Page.prototype.parse = function() {
var that = this;
this.log.debug.ln('start parsing file', this.path);
return this.read()
// Pre-process page with parser
.then(function() {
return that.parser.page.prepare(that.content)
.then(that.update);
})
// Render template
.then(function() {
return that.book.template.renderString(that.content, {
file: {
path: that.path,
mtime: 0 //todo: stat.mtime
}
}, {
file: that.path
})
.then(that.update);
})
// Render markup
.then(function() {
return that.parser.page(that.content);
});
};
module.exports = Page;
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