define('seajs/plugin-storage', ['./plugin-base','store','manifest'], function(require) {
var plugin = require('./plugin-base'),
manifest = require('manifest'),
util = plugin.util,
store = require('store'),
s = store.createStorage('localStorage'),
_manifest = s.get('manifest'),
isNeedUpdate = false,
updateList = {}
// need update only when _manifest does not exist or local manifest.version not equals online manifest.version
isNeedUpdate = !_manifest || _manifest.version !== manifest.version
if(isNeedUpdate){
// if local manifest does not exist update all entries which are listed in manifest file
if(!_manifest){
updateList = manifest
}else{
for(var i in manifest){
if(i != 'version'){
// Update a entry when the entry does not exist in the manifest file or local entry.version not equals online entry.version
!_manifest[i] && (updateList[i] = manifest[i])
_manifest[i] && _manifest[i].version != manifest[i].version && (updateList[i] = manifest[i])
}
}
}
_manifest = manifest
s.set('manifest',manifest)
}
extendResolve()
plugin.add({
name: 'storage',
ext: ['.js'],
fetch: function(url, callback) {
var stCache = s.get(url),
realPath= util.toRealPath(url,_manifest)
// use localStorage only when the entry has existed in localStorage and the entry is listed in manifest file meanwhile not be listed in updateList
if(stCache && _manifest[url] && !updateList[url]){
util.globalEval(stCache)
callback()
}else{
util.xhr(realPath, function(code) {
parseInt(seajs.pluginSDK.config.debug) == 2 || ( _manifest[url] && s.set(url,code) )
util.globalEval(code)
callback()
})
}
}
})
var Module = seajs.pluginSDK.Module
// fix refUri
function extendResolve() {
var _resolve = Module._resolve
Module._resolve = function(id, refUri) {
var manifest = Module._find('manifest')
manifest && (refUri = toRealPath(refUri, manifest))
return _resolve(id, refUri)
}
}
// manifest file maybe declare the entry·s version ，we need to make up the real path
function toRealPath(url, manifest) {
if (!manifest[url]) return url
var m = url.match(/^(.*)\/(.*)$/)
var dirname = m[1]
var name = m[2]
var version = manifest[url]['version']
if (!version) return url
return dirname + '/' + version + '/' + name
}
});
define('seajs/plugin-storage', ['./plugin-base','store','manifest'], function(require, exports) {
var plugin = require('./plugin-base'),
manifest = require('manifest'),
util = plugin.util,
store = require('store'),
s = store.createStorage('localStorage'),
_manifest = s.get('manifest'),
isNeedUpdate = false,
updateList = {}
//判断存储中是否含有旧的版本信息，如果没有则认为需要更新
if(!_manifest){
isNeedUpdate = true
}
//首次访问和新老版本号不一致的时候才需要更新
isNeedUpdate || _manifest.version == manifest.version ? isNeedUpdate : isNeedUpdate = true
//确认最终manifest
if(isNeedUpdate){
if(!_manifest){
updateList = manifest
}else{
for(var i in manifest){
if(i != 'version'){
// 如果原始manifest不存在该i信息 则加入更新列表 ，通常是新增js
!_manifest[i] && (updateList[i] = manifest[i])
// 如果原始manifest存在该i信息，并且他们的版本号不相等的是否 ，则加入更新列表，通常是修改js版本号
_manifest[i] && _manifest[i].version != manifest[i].version && (updateList[i] = manifest[i])
}
}
}
_manifest = manifest
s.set('manifest',manifest)
}
plugin.add({
name: 'storage',
ext: ['.js'],
fetch: function(url, callback) {
var stCache = s.get(url),
realPath= util.toRealPath(url,_manifest)
// 只有当缓存中存在该url的存储信息并且在manifest存储清单中存在该条信息并且无需更新的情况下才从缓存中读取
if(stCache && _manifest[url] && !updateList[url]){
console.log('来源于缓存',url)
util.globalEval(stCache)
callback()
}else{
console.log('storage - realPath',realPath)
util.xhr(realPath, function(code) {
console.log('来源于异步请求',url)
parseInt(seajs.pluginSDK.config.debug) == 2 || ( _manifest[url] && s.set(url,code) )
util.globalEval(code)
callback()
})
}
}
})
});