mirror of
https://github.com/flynx/pWiki.git
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712 lines
20 KiB
JavaScript
Executable File
712 lines
20 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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var fs = require('fs')
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var glob = require('glob')
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var cp = require('child_process')
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var object = require('ig-object')
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var types = require('ig-types')
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var pwpath = require('../path')
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var base = require('./base')
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//---------------------------------------------------------------------
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//
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// XXX structure is not final...
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// - need to split each adapter into modules...
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// - should the media handler api be merged with store???
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// - how do we handle config???
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var FILESTORE_OPTIONS = {
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index: '.index',
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backup: '/.backup',
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clearEmptyDir: true,
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dirToFile: true,
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cleanBackup: true,
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verbose: true,
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}
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var getOpts =
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function(opts){
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return {
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...FILESTORE_OPTIONS,
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...(opts ?? {}),
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} }
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var encode =
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module.encode =
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function(str){
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return str.replace(/[^\w .\\\/_\-]/gi,
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function(c){
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return `%${c
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.charCodeAt(0)
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.toString(16)
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.toUpperCase()}` }) }
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var decode =
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module.decode =
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function(str){
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return decodeURIComponent(str) }
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// func(base[, options])
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// -> true/false
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//
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// func(base, path[, options])
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// -> true/false
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//
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// XXX not yet sure how w should handle dot-files....
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// XXX should these be store methods???
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// XXX do we need error checking in these???
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var exists =
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module.exists =
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async function(base, sub, options){
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if(typeof(sub) != 'string'){
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options = sub ?? options
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sub = base
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base = null }
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var {index} = getOpts(options)
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sub = pwpath.sanitize(sub)
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var target = encode(
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base ?
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pwpath.join(base, sub)
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: sub)
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if(!fs.existsSync(target)){
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return false }
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var stat = await fs.promises.stat(target)
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if(stat.isDirectory()){
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return fs.existsSync(pwpath.join(target, index)) }
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return true }
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var read =
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module.read =
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async function(base, sub, options){
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if(typeof(sub) != 'string'){
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options = sub ?? options
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sub = base
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base = null }
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var {index} = getOpts(options)
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sub = pwpath.sanitize(sub)
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var target = encode(
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base ?
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pwpath.join(base, sub)
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: sub)
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if(!fs.existsSync(target)){
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return undefined }
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// handle dir text...
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var stat = await fs.promises.stat(target)
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if(stat.isDirectory()){
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var target = pwpath.join(target, index)
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fs.existsSync(target)
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|| (target = false) }
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return target ?
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fs.promises.readFile(target, {encoding: 'utf-8'})
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: undefined }
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var mkdir =
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module.mkdir =
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async function(base, sub, options){
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if(typeof(sub) != 'string'
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&& !(sub instanceof Array)){
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options = sub ?? options
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sub = base
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base = null }
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var {index, verbose} = getOpts(options)
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sub = pwpath.sanitize(sub)
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var levels = pwpath.split(sub)
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for(var level of levels){
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base = encode(
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base == null ?
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level
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: pwpath.join(base, level))
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// nothing exists -- create dir and continue...
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if(!fs.existsSync(base)){
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verbose
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&& console.log('mkdir(..): mkdir:', base)
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await fs.promises.mkdir(base, {recursive: true})
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continue }
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// directory -- continue...
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var stat = await fs.promises.stat(base)
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if(stat.isDirectory()){
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continue }
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// file -- convert to dir...
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verbose
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&& console.log('mkdir(..): converting file to dir:', base)
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await fs.promises.rename(base, base+'.pwiki-bak')
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await fs.promises.mkdir(base, {recursive: true})
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await fs.promises.rename(base +'.pwiki-bak', base +'/'+ index) }
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return base }
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var update =
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module.update =
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async function(base, sub, data, options){
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if(typeof(data) != 'string'){
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options = data ?? options
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data = sub
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sub = base
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base = null }
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var {index} = getOpts(options)
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sub = pwpath.sanitize(sub)
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var target = encode(
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base ?
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pwpath.join(base, sub)
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: sub)
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// path already exists...
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if(fs.existsSync(target)){
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var stat = await fs.promises.stat(target)
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if(stat.isDirectory()){
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target = pwpath.join(target, index) }
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// create path / parts of path...
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} else {
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// NOTE: no need to encode stuff here as it will be taken care
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// of by .mkdir(..)
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var levels = pwpath.split(sub)
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levels.pop()
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// ensure the parent dir exists...
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await module.mkdir(
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...(base ?
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// NOTE: we are keeping this separate here to avoid creating
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// anything above it...
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[base]
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: []),
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levels,
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options) }
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// write the data...
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var f = await fs.promises.open(target, 'w')
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await f.writeFile(data)
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f.close()
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return target }
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var clear =
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module.clear =
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async function(base, sub, options){
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if(typeof(sub) != 'string'){
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options = sub ?? options
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sub = base
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base = '' }
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var {index} = getOpts(options)
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sub = pwpath.sanitize(sub)
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// remove leaf...
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var target = encode(
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base == '' ?
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sub
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: pwpath.join(base, sub))
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// dir...
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if(fs.existsSync(target)){
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var stat = await fs.promises.stat(target)
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if(stat.isDirectory()){
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var files = await fs.promises.readdir(target)
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// remove index...
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if(files.includes(index)){
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await fs.promises.rm(pwpath.join(target, index))
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// NOTE: we do not care what we pop as long as the .length
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// is correct as we'll not be using the content after
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// this point...
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files.pop() }
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// remove dir if empty...
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if(files.length == 0){
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fs.promises.rmdir(target) }
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// simple file...
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} else {
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await fs.promises.rm(target) } }
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// cleanup path -- remove empty dirs... (XXX ???)
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var levels = pwpath.split(encode(sub))
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.slice(0, -1)
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base = encode(base)
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while(levels.length > 0){
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var cur = pwpath.join(base, ...levels)
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if(fs.existsSync(cur)){
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var stat = await fs.promises.stat(base)
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if(stat.isDirectory()){
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// stop cleanup if non-empty dir...
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if((await fs.promises.readdir(cur)).length != 0){
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break }
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fs.promises.rmdir(cur) } }
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levels.pop() }
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return target }
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var cleanup =
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module.cleanup =
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async function(base, options){
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var {index, clearEmptyDir, dirToFile, verbose} = getOpts(options)
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glob(pwpath.join(encode(base), '**/*'))
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.on('end', async function(paths){
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paths
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.sort(function(a, b){
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return b.length - a.length })
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for(var path of paths){
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var stat = await fs.promises.stat(path)
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if(stat.isDirectory()){
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var children = await fs.promises.readdir(path)
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// empty -> remove...
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if(clearEmptyDir
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&& children.length == 0){
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verbose
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&& console.log('cleanup(..): removing dir:', path)
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fs.promises.rmdir(path)
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continue }
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// dir -> file...
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if(dirToFile
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&& children.length == 1
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&& children[0] == index){
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verbose
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&& console.log('cleanup(..): converting dir to file:', path)
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await fs.promises.rename(path +'/'+ index, path+'.pwiki-bak')
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await fs.promises.rmdir(path)
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await fs.promises.rename(path +'.pwiki-bak', path)
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continue } } } }) }
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// XXX backup metadata...
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// - date
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// - reason
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// - refs...
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// XXX set hidden attribute on backup dir...
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// XXX add backup packing...
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var backup =
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module.backup = {
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// XXX backup config???
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//index: '.index',
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//base: '/.backup',
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//cleanBackup: true,
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//verbose: true,
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//
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// .create(<base>[, <options>])
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// .create(<base>, '**'[, <options>])
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// .create(<base>, '**', Date.timeStamp()[, <options>])
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// -> <list>
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//
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// .create(<base>, <path>[, <version>][, <options>])
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// -> <list>
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//
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// .create(<base>, <path>, false[, <options>])
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// -> <list>
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//
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// .create(..) and .restore(..) are completely symmetrical.
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//
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// NOTE: backing up ** will include nested backups but will skip the
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// root backup but will ignore the root backup dir...
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//
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// XXX since these are *almost* identical in structure, can we reuse one
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// to implement the other???
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// ..or can we implement these in a manner similar to "cp A B" vs. "cp B A"???
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create: async function(base, sub='**', version=Date.timeStamp(), options){
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var that = this
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if(typeof(sub) == 'object'){
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options = sub
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sub = '**' }
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if(typeof(version) == 'object'){
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options = version
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version = Date.timeStamp() }
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// options...
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var {index, backup, verbose, recursive, cleanBackup, __batch} = options = getOpts(options)
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recursive = recursive ?? false
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var _backup = backup =
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version ?
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pwpath.join(backup, version)
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: backup
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backup =
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pwpath.join(
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base,
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pwpath.relative(pwpath.dirname(sub), backup))
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// ** or * -- backup each file in path...
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if(/[\\\/]*\*\*?$/.test(sub)){
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if(sub.endsWith('**')){
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options.recursive = true }
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options.__batch = true
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if(cleanBackup
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&& fs.existsSync(backup)){
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verbose
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&& console.log('.create(..): cleaning:', backup)
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await fs.promises.rm(backup, {recursive: true}) }
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sub = sub.replace(/[\\\/]*\*\*?$/, '')
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var b = pwpath.split(_backup)
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.filter(function(p){
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return p != '' })
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.shift()
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return fs.promises.readdir(base +'/'+ sub)
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.iter()
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// skip backups...
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.filter(function(file){
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return !file.includes(b) })
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.map(async function(file){
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return await that.create(base, sub +'/'+ file, version, options) })
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// keep only the paths we backed up...
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.filter(function(e){
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return !!e })
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// backup single page...
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} else {
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var target = pwpath.join(base, sub)
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var full = _backup[0] == '/'
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// nothing to backup...
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if(!fs.existsSync(target)){
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verbose
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&& console.log('.create(..): target does not exist:', target)
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return }
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var to = full ?
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backup +'/'+ sub
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: backup +'/'+ pwpath.basename(sub)
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var todir = pwpath.dirname(to)
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if(!recursive){
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var stat = await fs.promises.stat(target)
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if(stat.isDirectory()){
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target += '/'+index
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to += '/'+index
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// nothing to backup...
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if(!fs.existsSync(target)){
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verbose
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&& !__batch
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&& console.log('.create(..): nothing to backup:', target)
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return } } }
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verbose
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&& console.log('.create(..):', sub, '->', to)
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await fs.promises.mkdir(todir, {recursive: true})
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await fs.promises.cp(target, to, {force: true, recursive})
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return to } },
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restore: async function(base, sub, version, options){
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var that = this
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// XXX
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var {index, backup, verbose, recursive, preBackup, __batch} = options = getOpts(options)
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recursive = recursive ?? false
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var _backup = backup =
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version ?
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pwpath.join(backup, version)
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: backup
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backup =
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pwpath.join(
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base,
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pwpath.relative(
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pwpath.dirname(sub),
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backup))
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// check if we can restore...
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if(!fs.existsSync(backup)){
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verbose
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&& console.log('restore(..): no backup version:', version)
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return }
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// XXX should we use the same options...
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preBackup
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&& await this.create(base, sub, options ?? {})
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// ** or * -- backup each file in path...
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// NOTE: when restoring there is no difference between ** and *...
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if(/[\\\/]*\*\*?$/.test(sub)){
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if(sub.endsWith('**')){
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options.recursive = true }
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// restore...
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// NOTE: we have already made a full backup so no need to
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// redo it down the line...
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options.preBackup = false
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options.__batch = true
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sub = sub.replace(/[\\\/]*\*\*?$/, '')
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var to = pwpath.join(base, sub)
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var b = pwpath.split(_backup)
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.filter(function(p){
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return p != '' })
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.shift()
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// cleanup...
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// NOTE: we need this stage as the file list we are backing up
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// and the one in the target dir can differ, and a single-page
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// .restore(..) will only remove collisions...
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await fs.promises.readdir(base +'/'+ sub)
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.iter()
|
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// skip backups...
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.filter(function(file){
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return !file.includes(b) })
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.map(async function(file){
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var p = pwpath.join(base, sub, file)
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verbose
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&& console.log('restore(..): removing:', p)
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await fs.promises.rm(p, {recursive: true})
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return p })
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return fs.promises.readdir(backup)
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.iter()
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.map(async function(file){
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return await that.restore(base, sub+'/'+file, version, options) })
|
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// keep only the paths we backed up...
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.filter(function(e){
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return !!e })
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// single page...
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} else {
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var index_file = ''
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var full = _backup[0] == '/'
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var source = full ?
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pwpath.join(backup, sub)
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: pwpath.join(backup, pwpath.basename(sub))
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if(!fs.existsSync(source)){
|
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verbose
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&& console.log('restore(..): source not present in backup:', source)
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return }
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var to = pwpath.join(base, sub)
|
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if(fs.existsSync(to)){
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var stat = await fs.promises.stat(to)
|
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if(stat.isDirectory()){
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var f = pwpath.join(to, index)
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if(fs.existsSync(f)){
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verbose
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&& console.log('restore(..): removing:', f)
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await fs.promises.rm(f) }
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} else {
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verbose
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&& console.log('restore(..): removing:', to)
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await fs.promises.rm(to) } }
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|
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if(!recursive){
|
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// handle dir text...
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var stat = await fs.promises.stat(source)
|
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if(stat.isDirectory()){
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source += '/'+index
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to += '/'+index
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if(!fs.existsSync(source)){
|
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verbose
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&& !__batch
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&& console.log('restore(..): source not present in backup:', source)
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return } } }
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verbose
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&& console.log('restore(..): restoring:', to)
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await fs.promises.cp(source, to, {recursive: true})
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return source } },
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//
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// Get backup versions...
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// listbackups(<base>[, <options>])
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// listbackups(<base>, '*'[, <options>])
|
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// -> <list>
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//
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// Get backup versions containing <path>...
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// listbackups(<base>, <path>[, <options>])
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// -> <list>
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//
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list: async function(base, sub, options){
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var that = this
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if(typeof(sub) == 'object'){
|
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options = sub
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sub = '*' }
|
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var {backup} = getOpts(options)
|
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|
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// handle local/global backups...
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var full = backup[0] == '/'
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base = full ?
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pwpath.join(base, backup)
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: pwpath.join(base, pwpath.dirname(sub), backup)
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sub = full ?
|
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sub
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: pwpath.basename(sub)
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return fs.existsSync(base) ?
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fs.promises.readdir(base)
|
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.iter()
|
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.filter(function(version){
|
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return (sub == '*' || sub == '**')
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|| fs.existsSync(
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pwpath.join(base, version, sub)) })
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: [] },
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remove: async function(base, version, options){
|
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var {backup, verbose} = getOpts(options)
|
|
var target =
|
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(version == '*' || version == '**') ?
|
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pwpath.join(base, backup)
|
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: pwpath.join(base, backup, version)
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if(fs.existsSync(target)){
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verbose
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&& console.log(`.remove(..): removing:`, target)
|
|
await fs.promises.rm(target, {recursive: true})
|
|
return target } },
|
|
clear: async function(base, options){
|
|
return await this.remove(base, '*', options) }
|
|
}
|
|
|
|
|
|
// - - - - - - - - - - - - - - - - - - - - - - -
|
|
|
|
// XXX might be a good idea to support ro mode on top level explicitly...
|
|
// XXX add monitor API + cache + live mode (auto on when lock detected)...
|
|
var FileStoreRO =
|
|
module.FileStoreRO = {
|
|
__proto__: base.Store,
|
|
|
|
// XXX
|
|
__path__: 'data/fs',
|
|
__pwiki_path__: '/.pwiki/',
|
|
__metadata_path__: '$PWIKI/metadata',
|
|
|
|
// XXX should this be "index" or ".index"???
|
|
__directory_text__: '.index',
|
|
|
|
expandPWikiPath: function(...path){
|
|
return pwpath.join(...path)
|
|
.replace(/\$PWIKI/, this.__pwiki_path__) },
|
|
|
|
// XXX do we remove the extension???
|
|
// XXX cache???
|
|
__paths__: async function(){
|
|
var that = this
|
|
return new Promise(function(resolve, reject){
|
|
glob(pwpath.join(that.__path__, '**/*'))
|
|
.on('end', function(paths){
|
|
Promise.all(paths
|
|
.map(async function(path){
|
|
return await module.exists(path) ?
|
|
decode(path)
|
|
.slice(that.__path__.length)
|
|
: [] }))
|
|
.then(function(paths){
|
|
resolve(paths.flat()) }) }) }) },
|
|
__exists__: async function(path){
|
|
return await module.exists(this.__path__, path, {index: this.__directory_text__})
|
|
&& path },
|
|
__get__: async function(path){
|
|
var p = pwpath.join(this.__path__, path)
|
|
var m = this.expandPWikiPath(this.__path__, this.__metadata_path__, path)
|
|
var {atimeMs, mtimeMs, ctimeMs, birthtimeMs} = await fs.promises.stat(p)
|
|
return {
|
|
atime: atimeMs,
|
|
mtime: mtimeMs,
|
|
ctime: ctimeMs,
|
|
text: await module.read(p, {index: this.__directory_text__}),
|
|
...JSON.parse(await module.read(m, {index: this.__directory_text__}) || '{}'),
|
|
} },
|
|
|
|
__update__: function(){},
|
|
__delete__: function(){},
|
|
}
|
|
|
|
// XXX add a lock file and prevent multiple adapters from controlling
|
|
// one path...
|
|
// XXX backup files on write/delete...
|
|
var FileStore =
|
|
module.FileStore = {
|
|
__proto__: FileStoreRO,
|
|
|
|
// XXX
|
|
__path__: 'data/fs',
|
|
__pwiki_path__: '/.pwiki',
|
|
__backup_path__: '$PWIKI/backup',
|
|
__lock_path__: '$PWIKI/lock',
|
|
|
|
__directory_text__: '.index',
|
|
|
|
// prevent more than one handler to write to a store...
|
|
//
|
|
__clear_lock__: [
|
|
`SIGINT`,
|
|
`SIGUSR1`,
|
|
`SIGUSR2`,
|
|
`SIGTERM`,
|
|
`exit`,
|
|
// XXX should we handle this??
|
|
// ...this can be an indicator of inconsistent state...
|
|
//`uncaughtException`,
|
|
],
|
|
__exit_lock_handler: undefined,
|
|
ensureLock: async function(){
|
|
var that = this
|
|
var lock = this.expandPWikiPath(this.__path__, this.__lock_path__)
|
|
// check lock...
|
|
if(fs.existsSync(lock)){
|
|
if(await module.read(lock) != process.pid){
|
|
throw new Error('attempting to write to a locked store:', this.__path__) }
|
|
// set lock...
|
|
} else {
|
|
await module.update(lock, `${process.pid}`)
|
|
// keep the pwiki dir hidden on windows...
|
|
if(process.platform == 'win32'){
|
|
cp.execSync('attrib +h '+
|
|
this.expandPWikiPath(this.__path__, this.__pwiki_path__)) }
|
|
this.__exit_lock_handler =
|
|
this.__exit_lock_handler
|
|
// NOTE: this must be sync as deferred calls might
|
|
// not get a chance to execute...
|
|
?? function(){
|
|
fs.rmSync(lock) }
|
|
this.__clear_lock__.forEach(function(evt){
|
|
process.off(evt, that.__exit_lock_handler)
|
|
process.on(evt, that.__exit_lock_handler) }) }
|
|
return this },
|
|
|
|
// XXX do we write all the data or only the .text???
|
|
__update__: async function(path, data, mode='update'){
|
|
this.ensureLock()
|
|
// metadata...
|
|
module.update(
|
|
this.__path__,
|
|
this.expandPWikiPath(this.__metadata_path__, path),
|
|
JSON.stringify(data),
|
|
{index: this.__directory_text__})
|
|
// text...
|
|
return module.update(
|
|
this.__path__, path,
|
|
data.text,
|
|
{index: this.__directory_text__}) },
|
|
__delete__: async function(path){
|
|
this.ensureLock()
|
|
// metadata...
|
|
module.clear(
|
|
this.__path__,
|
|
this.expandPWikiPath(this.__metadata_path__, path),
|
|
{index: this.__directory_text__})
|
|
// text...
|
|
return module.clear(
|
|
this.__path__, path,
|
|
{index: this.__directory_text__}) },
|
|
|
|
// specific API...
|
|
cleanup: async function(options={}){
|
|
return module.cleanup(this.__path__, {
|
|
index: this.__directory_text__,
|
|
...options,
|
|
}) },
|
|
// XXX add explicit versioning???
|
|
backup: async function(path='**', options={}){
|
|
this.ensureLock()
|
|
return backup.create(
|
|
this.__path__, path,
|
|
{
|
|
index: this.__directory_text__,
|
|
backup: this.expandPWikiPath(this.__backup_path__),
|
|
...options,
|
|
}) },
|
|
restore: async function(path='**', options={}){
|
|
this.ensureLock()
|
|
return backup.restore(
|
|
this.__path__, path,
|
|
{
|
|
index: this.__directory_text__,
|
|
backup: this.expandPWikiPath(this.__backup_path__),
|
|
...options,
|
|
}) },
|
|
}
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */ return module })
|