mirror of
https://github.com/flynx/ImageGrid.git
synced 2025-10-31 03:10:07 +00:00
835 lines
22 KiB
JavaScript
Executable File
835 lines
22 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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*
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**********************************************************************/
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((typeof define)[0]=='u'?function(f){module.exports=f(require)}:define)
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(function(require){ var module={} // make module AMD/node compatible...
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/*********************************************************************/
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if(typeof(process) != 'undefined'){
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var pathlib = requirejs('path')
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var events = requirejs('events')
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var fse = requirejs('fs-extra')
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var glob = requirejs('glob')
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var wglob = requirejs('wildglob')
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var guaranteeEvents = requirejs('guarantee-events')
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} else {
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return module
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}
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var data = require('imagegrid/data')
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var images = require('imagegrid/images')
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var util = require('lib/util')
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/*********************************************************************/
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var INDEX_DIR = '.ImageGrid'
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/*********************************************************************/
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// helpers...
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// Skip nested indexes from tree...
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//
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var skipNested = function(paths, index_dir, logger){
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logger = logger && logger.push('Skipping nested')
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paths = paths
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.map(function(p){ return p.split(index_dir).shift() })
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.sort(function(a, b){ return a.length - b.length })
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for(var i=0; i < paths.length; i++){
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var p = paths[i]
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if(p == null){
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continue
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}
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for(var j=i+1; j < paths.length; j++){
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var o = paths[j].split(p)
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if(o[0] == '' && o.length > 1){
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logger && logger.emit('skipping', paths[j])
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delete paths[j]
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}
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}
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}
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return paths
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.filter(function(p){ return !!p })
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}
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// Guarantee that the 'end' and 'match' handlers will always get called
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// with all results at least once...
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//
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// This does two things:
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// - every 'end' event handler will get the full result set, regardless
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// of when it was set...
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// - every 'match' handler will be called for every match found, again
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// regardless of whether it was set before or after the time of
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// match.
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//
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// This prevents handlers from missing the event they are waiting for,
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// essentially making it similar to how Promise/Deferred handle their
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// callbacks.
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//
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var guaranteeGlobEvents =
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module.guaranteeGlobEvents =
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function(glob){ return guaranteeEvents('match end', glob) }
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var gGlob =
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module.gGlob = function(){
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return guaranteeGlobEvents(glob.apply(null, arguments)) }
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/*********************************************************************/
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// Reader...
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// XXX would be nice to find a way to stop searching a sub tree as soon
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// as a match is found.
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// ...this would be allot faster than getting the whole tree and
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// then pruning through like it is done now...
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var listIndexes =
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module.listIndexes =
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function(base, index_dir){
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return gGlob(base +'/**/'+ (index_dir || INDEX_DIR), {strict: false}) }
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// NOTE: this is similar to listIndexes(..) but will return a promise and
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// skip all non-loadable nested indexes...
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var getIndexes =
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module.getIndexes =
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function(base, index_dir, logger){
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logger = logger && logger.push('Searching')
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return new Promise(function(resolve, reject){
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listIndexes(base, index_dir)
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.on('error', function(err){
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reject(err)
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})
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.on('match', function(path){
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logger && logger.emit('found', path)
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})
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.on('end', function(paths){
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// skip nested indexes...
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resolve(skipNested(paths, index_dir, logger))
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}) }) }
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var listPreviews =
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module.listPreviews =
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function(base, img_pattern){
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//return gGlob(base +'/*px/*jpg')
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return gGlob(base +'/*px/'+(img_pattern || '*')+'.jpg', {strict: false}) }
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// XXX return a promise rather than an event emitter (???)
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var listJSON =
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module.listJSON =
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function(path, pattern){
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pattern = pattern || '*'
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path = util.normalizePath(path)
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return gGlob(path +'/'+ pattern +'.json', {strict: false}) }
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// wrap a node style callback function into a Promise...
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//
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// NOTE: this is inspired by the promise module for node this stopped
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// working, and porting one method was simpler that trying to get
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// to the bottom of the issue, especially with native promises...
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// XXX move to someplace generic...
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var denodeify =
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module.denodeify =
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function(func){
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var that = this
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return function(){
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var args = [...arguments]
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return new Promise(function(resolve, reject){
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func.apply(that, args.concat([function(err, res){
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return err ? reject(err) : resolve(res) }])) }) } }
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var loadFile = denodeify(fse.readFile)
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var writeFile = denodeify(fse.writeFile)
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var ensureDir = denodeify(fse.ensureDir)
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// XXX handle errors...
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function loadJSON(path){
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path = util.normalizePath(path)
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return loadFile(path).then(JSON.parse)
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}
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// Format:
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// {
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// <date>: [
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// <path>,
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// ...
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// ],
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//
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// ...
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//
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// // root files -- no date...
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// root: [
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// <path>,
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// ...
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// ]
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// }
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//
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// NOTE: this does not use the fs...
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var groupByDate =
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module.groupByDate =
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function(list){
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var res = {}
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list
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.forEach(function(n){
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var b = pathlib.basename(n)
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var s = b.split(/[-.]/g).slice(0, -1)
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// no date set...
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if(s.length == 1){
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res.root = res.root || []
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res.root.push(n)
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} else {
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res[s[0]] = res[s[0]] || []
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res[s[0]].push(n)
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}
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})
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return res
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}
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// Group file list by keyword...
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//
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// this will build a structure in the following format:
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// {
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// <keyword>: [
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// // diff files...
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// // NOTE: the first argument indicates
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// // if this is a diff or not, used to
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// // skip past the last base...
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// [true, <filename>],
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// ...
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//
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// // base file (non-diff)
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// [false, <filename>]
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// ],
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// ...
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// }
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//
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// This is used to sequence, load and correctly merge
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// the found JSON files.
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//
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// NOTE: all files past the first non-diff are skipped.
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// NOTE: this does not use the fs...
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var groupByKeyword =
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module.groupByKeyword =
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function(list, from_date, logger){
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//logger = logger && logger.push('Grouping by keyword')
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var index = {}
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var queued = 0
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var dates = groupByDate(list)
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Object.keys(dates)
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.sort()
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.reverse()
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// skip dates before from_date...
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// NOTE: from_date is included...
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.filter(function(d){ return from_date ? d <= from_date || d == 'root' : true })
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.forEach(function(d){
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dates[d]
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.sort()
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.reverse()
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.forEach(function(n){
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var b = pathlib.basename(n)
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var s = b.split(/[-.]/g).slice(0, -1)
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// <timestamp>-<keyword>[-diff].json / diff / non-diff
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// NOTE: all files without a timestamp are filtered out
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// by groupByDate(..) into a .root section so we
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// do not need to worry about them here...
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var k = s[1]
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var d = s[2] == 'diff'
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k = d ? k : s.slice(1).join('-')
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// new keyword...
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if(index[k] == null){
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index[k] = [[d, n]]
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logger && logger.emit('queued', n)
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queued += 1
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// do not add anything past the latest non-diff
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// for each keyword...
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} else if(index[k].slice(-1)[0][0] == true){
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index[k].push([d, n])
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logger && logger.emit('queued', n)
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queued += 1
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}
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}) });
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// add base files back where needed...
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// <keyword>.json / non-diff
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(dates.root || [])
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.forEach(function(n){
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var b = pathlib.basename(n)
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var k = b.split(/\./g)[0]
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// no diffs...
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if(index[k] == null){
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index[k] = [[false, n]]
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logger && logger.emit('queued', n)
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queued += 1
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// add root file if no base is found...
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} else if(index[k].slice(-1)[0][0] == true){
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index[k].push([false, n])
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logger && logger.emit('queued', n)
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queued += 1
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}
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})
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// remove the flags...
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for(var k in index){
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index[k] = index[k]
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.map(function(e){ return e[1] }) }
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logger && logger.emit('files-queued', queued, index)
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return index
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}
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// Load index data listed by timestamp...
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//
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// NOTE: this returns data similar to groupByDate(..) but will replace
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// the 'root' key with a timestamp...
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// NOTE: this will include the full history. this is different to what
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// groupByKeyword(..) does.
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//
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// XXX handle errors....
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var loadSaveHistoryList =
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module.loadSaveHistoryList =
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function(path, index_dir, logger){
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logger = logger && logger.push('Save history')
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path = util.normalizePath(path)
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index_dir = index_dir || INDEX_DIR
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return new Promise(function(resolve, reject){
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// direct index...
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if(pathlib.basename(path) == index_dir){
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listJSON(path)
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// XXX handle errors...
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.on('error', function(err){
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logger && logger.emit('error', err)
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console.error(err)
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})
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.on('end', function(files){
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var data = groupByDate(files)
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// XXX should we mark the root timestamp in any way???
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if('root' in data && data.root.length > 0){
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// XXX handle stat error...
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data[fse.statSync(data.root[0]).birthtime.getTimeStamp()] = data.root
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delete data.root
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}
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resolve(data)
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})
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// need to locate indexes...
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} else {
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var res = {}
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getIndexes(path, index_dir, logger)
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.catch(function(err){
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logger && logger.emit('error', err)
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console.error(err) })
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.then(function(paths){
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// start loading...
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return Promise
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.all(paths.map(function(p){
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p = util.normalizePath(p)
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//var path = pathlib.normalize(p +'/'+ index_dir)
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var path = util.normalizePath(p +'/'+ index_dir)
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return loadSaveHistoryList(path, index_dir)
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.then(function(obj){
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// NOTE: considering that all the paths within
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// the index are relative to the preview
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// dir (the parent dir to the index root)
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// we do not need to include the index
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// itself in the base path...
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res[p] = obj }) })) })
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.then(function(){ resolve(res) }) } }) }
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// Load index(s)...
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//
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// Load path (use default INDEX_DIR)...
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// loadIndex(path)
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// loadIndex(path, logger)
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// -> data
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//
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// Load path with custom index_dir...
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// loadIndex(path, index_dir, logger)
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// -> data
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//
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// Load from date...
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// loadIndex(path, index_dir, from_date, logger)
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// -> data
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//
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// Load path as-is (do not search for index dir)...
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// loadIndex(path, false)
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// loadIndex(path, false, logger)
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// -> data
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//
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// loadIndex(path, false, from_date, logger)
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// -> data
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//
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//
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// Procedure:
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// - locate indexes in path given
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// - per each index
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// - get all .json files
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// - get and load latest base file per keyword
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// - merge all later than loaded base diff files per keyword
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//
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// Merging is done by copying the key-value pairs from diff to the
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// resulting object.
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//
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//
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// Index format (input):
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// <index-dir>/
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// +- [<timestamp>-]<keyword>[-diff].json
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// +- ...
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//
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//
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// Output format:
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// {
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// // one per index found...
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// <path>/<sub-path>: {
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// <keyword>: <kw-data>,
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// ...
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// },
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// ...
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// }
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//
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//
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// Events emitted on logger if passed:
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// - path <path> - path currently being processed
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// - files-found <n> <files> - number and list of files found (XXX do we need this?)
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// - queued <path> - json file path queued for loading
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// - files-queued <n> <queue> - number of files queued and index (XXX do we need this?)
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// - loaded <keyword> <path> - done loading json file path
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// - loaded <keyword>-diff <path>
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// - done loading json file path (diff file)
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// - index <path> <data> - done loading index at path
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// - error <err> - an error occurred...
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//
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//
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//
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// NOTE: this is fairly generic and does not care about the type of data
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// or it's format as long as it's JSON and the file names comply
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// with the scheme above...
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// NOTE: this only loads the JSON data and does not import or process
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// anything...
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//
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// XXX need to do better error handling -- stop when an error is not recoverable...
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// XXX really overcomplicated, mostly due to promises...
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// ...see if this can be split into more generic
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// sections...
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// XXX change path handling:
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// 1) explicit index -- ends with INDEX_DIR (works)
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// -> load directly...
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// 2) implicit index -- path contains INDEX_DIR (works)
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// -> append INDEX_DIR and (1)...
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// 3) path is a pattern (contains glob wildcards) (works)
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// -> search + load
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// 4) non of the above...
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// a) error
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// b) append '**' (current behavior)
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// ...(a) seems more logical...
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// XXX do a task version...
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var loadIndex =
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module.loadIndex =
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function(path, index_dir, from_date, logger){
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logger = logger && logger.push('Index')
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path = util.normalizePath(path)
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if(index_dir && index_dir.emit != null){
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logger = index_dir
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index_dir = from_date = null
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} else if(from_date && from_date.emit != null){
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logger = from_date
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from_date = null
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}
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//index_dir = index_dir || INDEX_DIR
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index_dir = index_dir === false ?
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index_dir
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: (index_dir || INDEX_DIR)
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|
|
// XXX should this be interactive (a-la EventEmitter) or as it is now
|
|
// return the whole thing as a block (Promise)...
|
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// NOTE: one way to do this is use the logger, it will get
|
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// each index data on an index event
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return new Promise(function(resolve, reject){
|
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// prepare the index_dir and path....
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// NOTE: index_dir can be more than a single directory...
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var i = index_dir
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&& util.normalizePath(index_dir).split(/[\\\/]/g)
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var p = util.normalizePath(path).split(/[\\\/]/g).slice(-i.length)
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var explicit_index_dir = !index_dir
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|| (i.filter(function(e, j){ return e == p[j] }).length == i.length)
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|
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// we've got an index...
|
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// XXX do we need to check if it's a dir???
|
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if(explicit_index_dir){
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|
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logger && logger.emit('path', path)
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listJSON(path)
|
|
// XXX handle errors...
|
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.on('error', function(err){
|
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logger && logger.emit('error', err)
|
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console.error(err)
|
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})
|
|
.on('end', function(files){
|
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var res = {}
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|
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var index = groupByKeyword(files, from_date, logger)
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|
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// load...
|
|
Promise
|
|
.all(Object.keys(index).map(function(keyword){
|
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// get relevant paths...
|
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var diffs = index[keyword]
|
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var latest = diffs.splice(-1)[0]
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|
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// XXX not sure about this...
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if(keyword == '__dates'){
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res.__dates = index.__dates
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return true
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}
|
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if(keyword == '__date'){
|
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res.__date = index.__date
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return true
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}
|
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|
|
// NOTE: so far I really do not like how nested and
|
|
// unreadable the Promise/Deferred code becomes
|
|
// even with a small rise in complexity...
|
|
// ...for example, the following code is quite
|
|
// simple, but does not look the part.
|
|
//
|
|
// Maybe it's a style thing...
|
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|
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// load latest...
|
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return loadJSON(latest)
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.then(function(data){
|
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logger && logger.emit('loaded', keyword, latest)
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|
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var loading = {}
|
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|
|
// handle diffs...
|
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return Promise
|
|
// load diffs...
|
|
.all(diffs.map(function(p){
|
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return loadJSON(p)
|
|
// XXX handle errors...
|
|
// XXX we should abort loading this index...
|
|
.catch(function(err){
|
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logger && logger.emit('error', err)
|
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console.error(err)
|
|
})
|
|
.then(function(json){
|
|
// NOTE: we can't merge here
|
|
// as the files can be
|
|
// read in arbitrary order...
|
|
loading[p] = json
|
|
})
|
|
}))
|
|
// merge diffs...
|
|
.then(function(){
|
|
diffs
|
|
.reverse()
|
|
.forEach(function(p){
|
|
var json = loading[p]
|
|
|
|
for(var n in json){
|
|
data[n] = json[n]
|
|
}
|
|
|
|
logger && logger.emit('loaded', keyword+'-diff', p)
|
|
})
|
|
|
|
res[keyword] = data
|
|
})
|
|
})
|
|
}))
|
|
.then(function(){
|
|
logger && logger.emit('index', path, res)
|
|
|
|
var d = {}
|
|
d[path] = res
|
|
|
|
resolve(d)
|
|
})
|
|
})
|
|
|
|
// no explicit index given -- find all in sub tree...
|
|
} else {
|
|
var res = {}
|
|
|
|
// special case: root index...
|
|
if(fse.existsSync(path +'/'+ index_dir)){
|
|
var n = path +'/'+ index_dir
|
|
|
|
return loadIndex(n, index_dir, from_date, logger)
|
|
.then(function(obj){
|
|
// NOTE: considering that all the paths within
|
|
// the index are relative to the preview
|
|
// dir (the parent dir to the index root)
|
|
// we do not need to include the index
|
|
// itself in the base path...
|
|
res[path] = obj[n]
|
|
resolve(res)
|
|
})
|
|
}
|
|
|
|
// full search...
|
|
getIndexes(path, index_dir, logger)
|
|
.catch(function(err){
|
|
logger && logger.emit('error', err)
|
|
console.error(err)
|
|
})
|
|
.then(function(paths){
|
|
// start loading...
|
|
Promise.all(paths.map(function(p){
|
|
p = util.normalizePath(p)
|
|
//var path = pathlib.normalize(p +'/'+ index_dir)
|
|
var path = util.normalizePath(p +'/'+ index_dir)
|
|
return loadIndex(path, index_dir, from_date, logger)
|
|
.then(function(obj){
|
|
// NOTE: considering that all the paths within
|
|
// the index are relative to the preview
|
|
// dir (the parent dir to the index root)
|
|
// we do not need to include the index
|
|
// itself in the base path...
|
|
res[p] = obj[path]
|
|
})
|
|
})).then(function(){ resolve(res) })
|
|
})
|
|
}
|
|
})
|
|
}
|
|
|
|
|
|
// get/populate the previews...
|
|
//
|
|
// format:
|
|
// {
|
|
// <index-base>: {
|
|
// <gid>: {
|
|
// <resolution>: <local-path>,
|
|
// ...
|
|
// },
|
|
// ...
|
|
// },
|
|
// ...
|
|
// }
|
|
//
|
|
// XXX should this be compatible with loadIndex(..) data???
|
|
// XXX handle errors....
|
|
var loadPreviews =
|
|
module.loadPreviews =
|
|
function(base, pattern, previews, index_dir, absolute_path){
|
|
previews = previews || {}
|
|
index_dir = index_dir || INDEX_DIR
|
|
base = util.normalizePath(base)
|
|
pattern = pattern || '*'
|
|
|
|
// we got an explicit index....
|
|
if(pathlib.basename(base) == index_dir){
|
|
return new Promise(function(resolve, reject){
|
|
if(!(base in previews)){
|
|
previews[base] = {}
|
|
}
|
|
|
|
var images = previews[base]
|
|
|
|
listPreviews(base, pattern)
|
|
// XXX handle errors....
|
|
//.on('error', function(err){
|
|
//})
|
|
// preview name syntax:
|
|
// <res>px/<gid> - <orig-filename>.jpg
|
|
.on('match', function(path){
|
|
// get the data we need...
|
|
var gid = pathlib.basename(path).split(' - ')[0]
|
|
var res = pathlib.basename(pathlib.dirname(path))
|
|
|
|
// build the structure if it does not exist...
|
|
if(!(gid in images)){
|
|
images[gid] = {}
|
|
}
|
|
if(images[gid].preview == null){
|
|
images[gid].preview = {}
|
|
}
|
|
|
|
// add a preview...
|
|
// NOTE: this will overwrite a previews if they are found in
|
|
// several locations...
|
|
images[gid].preview[res] =
|
|
util.normalizePath(index_dir +'/'+ path.split(index_dir)[1])
|
|
})
|
|
.on('end', function(){
|
|
resolve(previews)
|
|
})
|
|
})
|
|
|
|
// find all sub indexes...
|
|
} else {
|
|
return new Promise(function(resolve, reject){
|
|
var queue = []
|
|
listIndexes(base, index_dir)
|
|
// XXX handle errors....
|
|
//.on('error', function(err){
|
|
//})
|
|
.on('match', function(base){
|
|
queue.push(loadPreviews(base, pattern, previews, index_dir, absolute_path))
|
|
})
|
|
.on('end', function(){
|
|
Promise.all(queue)
|
|
.then(function(){
|
|
resolve(previews)
|
|
})
|
|
})
|
|
})
|
|
}
|
|
}
|
|
|
|
|
|
// XXX
|
|
var copyPreviews =
|
|
module.copyPreviews =
|
|
function(){
|
|
// XXX
|
|
}
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
// Builder...
|
|
// - read list
|
|
// - generate previews (use config)
|
|
// - build images/data
|
|
// .loadURLs(..)
|
|
// - write (writer)
|
|
|
|
|
|
|
|
/*********************************************************************/
|
|
// Writer...
|
|
//
|
|
// This is just like the loader, done in two stages:
|
|
// - format dependent de-construction (symetric to buildIndex(..))
|
|
// - generic writer...
|
|
//
|
|
// NOTE: for now we'll stick to the current format...
|
|
|
|
var FILENAME = '${DATE}-${KEYWORD}.${EXT}'
|
|
|
|
// NOTE: keyword in index can take the form <path>/<keyword>, in which
|
|
// case the keyword will be saved to the <path>/<file-format>
|
|
// NOTE: loadIndex(..) at this point will ignore sub-paths...
|
|
var writeIndex =
|
|
module.writeIndex =
|
|
function(json, path, date, filename_tpl, logger){
|
|
logger = logger && logger.push('Index')
|
|
|
|
// XXX get this from args/config...
|
|
var spaces = null
|
|
|
|
path = util.normalizePath(path)
|
|
filename_tpl = filename_tpl || FILENAME
|
|
// XXX for some reason this gets the unpatched node.js Date, so we
|
|
// get the patched date explicitly...
|
|
date = date || window.Date.timeStamp()
|
|
|
|
var files = []
|
|
|
|
// build the path if it does not exist...
|
|
return ensureDir(path)
|
|
.catch(function(err){
|
|
logger && logger.emit('error', err)
|
|
console.error(err)
|
|
})
|
|
.then(function(){
|
|
logger && logger.emit('path', path)
|
|
|
|
// write files...
|
|
// NOTE: we are not doing this sequencilly as there will not
|
|
// be too many files...
|
|
return Promise
|
|
.all(Object.keys(json).map(function(keyword){
|
|
//var data = JSON.stringify(json[keyword])
|
|
var data = JSON.stringify(json[keyword], null, spaces)
|
|
|
|
// get the sub-path and keyword...
|
|
var sub_path = keyword.split(/[\\\/]/g)
|
|
keyword = sub_path.pop()
|
|
sub_path = sub_path.join('/')
|
|
|
|
var file = path +'/'+ sub_path +'/'+ (filename_tpl
|
|
.replace('${DATE}', date)
|
|
.replace('${KEYWORD}', keyword)
|
|
.replace('${EXT}', 'json'))
|
|
|
|
return ensureDir(pathlib.dirname(file))
|
|
.then(function(){
|
|
files.push(file)
|
|
|
|
logger && logger.emit('queued', file)
|
|
|
|
return writeFile(file, data, 'utf8')
|
|
.catch(function(err){
|
|
logger && logger.emit('error', err)
|
|
console.error(err)
|
|
})
|
|
.then(function(){
|
|
logger && logger.emit('written', file)
|
|
})
|
|
})
|
|
}))
|
|
.then(function(){
|
|
logger && logger.emit('done', files)
|
|
})
|
|
})
|
|
}
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */ return module })
|