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var Immutable = require('immutable');
var timing = require('../utils/timing');
var Page = require('../models/page');
var walkSummary = require('./walkSummary');
var parsePage = require('./parsePage');
/**
Parse a page from a path
@param {Book} book
@param {String} filePath
@return {Page?}
*/
function parseFilePage(book, filePath) {
var fs = book.getContentFS();
return fs.statFile(filePath)
.then(
function(file) {
var page = Page.createForFile(file);
return parsePage(book, page);
},
function(err) {
// file doesn't exist
return null;
}
)
.fail(function(err) {
var logger = book.getLogger();
logger.error.ln('error while parsing page "' + filePath + '":');
throw err;
});
}
/**
Parse all pages from a book as an OrderedMap
@param {Book} book
@return {Promise<OrderedMap<Page>>}
*/
function parsePagesList(book) {
var summary = book.getSummary();
var glossary = book.getGlossary();
var map = Immutable.OrderedMap();
// Parse pages from summary
return timing.measure(
'parse.listPages',
walkSummary(summary, function(article) {
if (!article.isPage()) return;
var filepath = article.getPath();
// Is the page ignored?
if (book.isContentFileIgnored(filepath)) return;
return parseFilePage(book, filepath)
.then(function(page) {
// file doesn't exist
if (!page) {
return;
}
map = map.set(filepath, page);
});
})
)
// Parse glossary
.then(function() {
var file = glossary.getFile();
if (!file.exists()) {
return;
}
return parseFilePage(book, file.getPath())
.then(function(page) {
// file doesn't exist
if (!page) {
return;
}
map = map.set(file.getPath(), page);
});
})
.then(function() {
return map;
});
}
module.exports = parsePagesList;
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