monolith/functions.js

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JavaScript
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2017-02-20 08:51:24 +01:00
var fs = require('fs')
var path = require('path')
var url = require('url')
var request = require('sync-request')
var options = require('./options.js');
var cache = {}
var request_options = {
'headers': {
'user-agent': options.userAgentString
}
}
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// Note: http://site.com/image/icons/home.png -> http://site.com/image/icons
function absoluteURLPath (aURL) {
var URL = url.parse(aURL)
return URL.protocol + '//' + URL.host + URL.path
}
var reURL = /^https?:\/\//i // TODO file:///
function isURL (aPath) { return reURL.test(aPath) }
function base64 (aInput) { return new Buffer(aInput).toString('base64') }
function resolve (aFrom, aTo) {
if (isURL(aFrom)) {
var URL = url.parse(aFrom)
if (aTo[0] == '/') { // (http://site.com/article/1, /css/main.css)
if (aTo[1] == '/') { // (http://site.com/article/1, //images/1.png)
return URL.protocol + aTo
} else {
return url.resolve(URL.protocol + '//' + URL.host, aTo)
}
} else if (isURL(aTo)) { // (http://site.com, http://site.com/css/main.css)
return aTo
} else { // (http://site.com, css/main.css)
return url.resolve(aFrom, aTo)
}
} else {
return path.resolve(aFrom, aTo)
}
}
function retrieveFile (aAbsBasePath, aFilePath, aBinary) {
var fullFilePath = resolve(aAbsBasePath, aFilePath)
var format = aBinary ? 'base64' : 'utf8'
var cacheKey = fullFilePath + '@' + format
if (isURL(fullFilePath)) {
if (cacheKey in cache) {
return cache[cacheKey]
} else {
try {
var res = request('GET', fullFilePath, request_options)
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if (!options.suppressVerboseOutput)
console.warn('Retrieving file', fullFilePath, '...')
return cache[cacheKey] = res.getBody(format)
} catch (httpError) {
return ''
}
}
} else {
return fs.readFileSync(fullFilePath, format)
}
}
module.exports = { absoluteURLPath, isURL, base64, resolve, retrieveFile }