mirror of
https://github.com/flynx/pWiki.git
synced 2025-10-31 11:00:08 +00:00
770 lines
20 KiB
JavaScript
Executable File
770 lines
20 KiB
JavaScript
Executable File
/**********************************************************************
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*
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*
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* XXX might be a good idea to try signature based security:
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* - sign changes
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* - sign sync session
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* - refuse changes with wrong signatures
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* - public keys available on client and on server
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* - check signatures localy
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* - check signatures remotely
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* - private key available only with author
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* - keep both the last signed and superceding unsigned version
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* - on sync ask to overwrite unsigned with signed
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* - check if we can use the same mechanics as ssh...
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* - in this view a user in the system is simply a set of keys and
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* a signature (a page =))
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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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// XXX
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//var object = require('lib/object')
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var object = require('ig-object')
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/*********************************************************************/
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// XXX might be a good idea to make this compatible with node's path API...
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var path =
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module.path = {
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// The page returned when getting the '/' path...
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ROOT_PAGE: 'WikiHome',
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// The page returned when listing a path ending with '/'...
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//
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// If set to false treat dirs the same as pages (default)
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// XXX revise...
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//DEFAULT_DIR: 'pages',
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DEFAULT_DIR: false,
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ALTERNATIVE_PAGES: [
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'EmptyPage',
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'NotFound',
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],
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SEARCH_PATHS: [
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'./Templates',
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'/System',
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],
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// NOTE: trailing/leading '/' are represented by '' at end/start of
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// path list...
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normalize: function(path='.', format='auto'){
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format = format == 'auto' ?
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(path instanceof Array ?
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'array'
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: 'string')
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: format
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path = (path instanceof Array ?
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path
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// NOTE: this will also trim the path elements...
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: path.split(/\s*[\\\/]+\s*/))
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.reduce(function(res, e, i, L){
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// special case: leading '..' / '.'
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if(res.length == 0
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&& e == '..'){
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return [e] }
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;(e == '.'
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// keep explicit '/' only at start/end of path...
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|| (e == ''
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&& i != 0
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&& i != L.length-1)) ?
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undefined
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: e == '..'
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|| res[res.length-1] == '>>' ?
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res.pop()
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// NOTE: the last '>>' will be retained...
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: res.push(e)
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return res }, [])
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return format == 'string' ?
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path.join('/')
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: path },
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relative: function(parent, path, format='auto'){
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format = format == 'auto' ?
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(path instanceof Array ?
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'array'
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: 'string')
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: format
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path = this.normalize(path, 'array')
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// root path...
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if(path[0] == ''){
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return format == 'string' ?
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path.join('/')
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: path }
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parent = this.normalize(parent, 'array')
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return this.normalize(parent.concat(path), format) },
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//paths: function*(path='/', leading_slash=true){
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paths: function*(path='/'){
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path = this.normalize(path, 'array')
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// handle '', '.', and '/' paths...
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if(path.length == 0
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|| (path.length == 1 && path[0] == '')
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|| (path.length == 2 && path[0] == '' && path[1] == '')){
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path = [this.ROOT_PAGE] }
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// normalize relative paths to root...
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path[0] != ''
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&& path.unshift('')
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// paths ending in '/' -- dir lister...
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if(path[path.length-1] == ''){
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path.pop()
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this.DEFAULT_DIR
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&& path.push(this.DEFAULT_DIR) }
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// generate path candidates...
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for(var page of [path.pop(), ...this.ALTERNATIVE_PAGES]){
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for(var tpl of ['.', ...this.SEARCH_PATHS]){
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// search for page up the path...
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var p = path.slice()
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while(p.length > 0){
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yield this.relative(p, tpl +'/'+ page, 'string')
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//yield leading_slash ?
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// this.relative(p, tpl +'/'+ page, 'string')
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// : this.relative(p, tpl +'/'+ page, 'string').slice(1)
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// special case: non-relative template/page path...
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if(tpl[0] == '/'){
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break }
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p.pop() } } } },
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}
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//---------------------------------------------------------------------
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// NOTE: store keys must be normalized...
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//
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// XXX LEADING_SLASH should this be strict about leading '/' in paths???
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// ...this may lead to duplicate paths created -- '/a/b' and 'a/b'
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// XXX must support store stacks...
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// XXX path macros???
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// XXX should we support page symlinking???
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var store =
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module.store = {
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exists: function(path){
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path = module.path.normalize(path, 'string')
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return path in this
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|| (path[0] == '/' ?
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path.slice(1) in this
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: ('/'+ path) in this) },
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paths: function(){
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return Object.keys(this) },
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pages: function(){
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var that = this
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return this.paths()
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.map(function(p){
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return [p, that[p]] }) },
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//
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// Resolve page for path
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// .match(<path>)
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// -> <path>
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//
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// Match paths (non-strict mode)
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// .match(<pattern>)
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// .match(<pattern>, false)
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// -> [<path>, ...]
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//
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// Match pages (paths in strict mode)
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// .match(<pattern>, true)
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// -> [<path>, ...]
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//
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// In strict mode the trailing star in the pattern will only match
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// actual existing pages, while in non-strict mode the pattern will
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// match all sub-paths.
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//
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match: function(path, strict=false){
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// pattern match * / **
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if(path.includes('*')
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|| path.includes('**')){
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// NOTE: we are matching full paths only here so leading and
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// trainling '/' are optional...
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var pattern = new RegExp(`^\\/?${
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module.path.normalize(path, 'string')
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.replace(/^\/|\/$/g, '')
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.replace(/\//g, '\\/')
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.replace(/\*\*/g, '.+')
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.replace(/\*/g, '[^\\/]+') }`)
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return [...this.paths()
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.reduce(function(res, p){
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var m = p.match(pattern)
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m
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&& (!strict
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|| m[0] == p)
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&& res.add(m[0])
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return res }, new Set())] }
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// search...
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for(var p of module.path.paths(path)){
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if(p in this){
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return p }
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// NOTE: all paths at this point and in store are absolute,
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// so we check both with the leading '/' and without
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// it to make things a bit more relaxed and return the
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// actual matching path...
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if(p[0] == '/'
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&& p.slice(1) in this){
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return p.slice(1) }
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if(p[0] != '/'
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&& ('/'+p) in this){
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return '/'+p } } },
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//
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// Resolve page
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// .get(<path>)
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// -> <value>
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//
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// Resolve pages (non-strict mode)
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// .get(<pattern>)
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// .get(<pattern>, false)
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// -> [<value>, .. ]
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//
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// Get pages (strict mode)
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// .get(<pattern>, true)
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// -> [<value>, .. ]
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//
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// In strict mode this will not try to resolve pages and will not
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// return pages at paths that do not explicitly exist.
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//
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// XXX should this call actions???
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// XXX should this return a map for pattern matches???
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get: function(path, strict=false){
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var that = this
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path = this.match(path, strict)
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return path instanceof Array ?
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// XXX should we return matched paths???
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path.map(function(p){
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// NOTE: p can match a non existing page at this point,
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// this can be the result of matching a/* in a a/b/c
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// and returning a a/b which can be undefined...
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return that[p]
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?? that[that.match(p)] })
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: this[path] },
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// NOTE: deleting and updating only applies to explicit matching
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// paths -- no page acquisition is performed...
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//
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// XXX should these return this or the data???
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update: function(path, data, mode='update'){
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path = module.path.normalize('/'+ path, 'string')
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path = path[path.length-1] == '/' ?
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path.slice(0, -1)
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: path
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this[path] =
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mode == 'update' ?
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Object.assign(
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this[path] ?? {},
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data)
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: data
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return this },
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// XXX revise...
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delete: function(path){
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path = module.path.normalize(path, 'string')
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path = path[path.length-1] == '/' ?
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path.slice(0, -1)
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: path
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// XXX revise...
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delete this[path]
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delete this['/'+ path]
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return this },
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}
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// XXX need to specify page format....
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// XXX need a way to set the page path...
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var actions =
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module.actions = {
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__proto__: store,
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// base actions (virtual pages)...
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'System/raw': function(page, path){
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return { text: this.get(path +'/..') } },
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// XXX ...
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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var relProxy =
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function(name){
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return function(path='.', ...args){
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return this.store[name](
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module.path.relative(this.location, path),
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...args) } }
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// XXX do we need history management???
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var BasePage =
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module.BasePage =
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object.Constructor('BasePage', {
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// NOTE: this can be inherited...
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//store: undefined,
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// root page used to clone new instances via the .clone(..) method...
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//root: undefined,
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// page location...
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//
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__location: undefined,
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get location(){
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return this.__location ?? '/' },
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set location(path){
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this.referrer = this.location
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var cur = this.__location =
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module.path.relative(
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this.location,
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path)
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//* XXX HISTORY...
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if(this.history !== false){
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this.history.includes(this.__location)
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&& this.history.splice(
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this.history.indexOf(this.__location)+1,
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this.history.length)
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this.history.push(cur) } },
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// referrer -- a previous page location...
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referrer: undefined,
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//* XXX HISTORY...
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// NOTE: set this to false to disable history...
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__history: undefined,
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get history(){
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if(this.__history === false){
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return false }
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if(!this.hasOwnProperty('__history')){
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this.__history = [] }
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//this.__history = (this.__history ?? []).slice() }
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return this.__history },
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back: function(offset=1){
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var h = this.history
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if(h === false
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|| h.length <= 1){
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return this }
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// get position in history...
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var p = h.indexOf(this.location)
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// if outside of history go to last element...
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p = p < 0 ?
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h.length
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: p
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p = Math.max(
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Math.min(
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h.length-1
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- p
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+ offset,
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h.length-1),
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0)
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this.referrer = this.location
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this.__location = h[h.length-1 - p]
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return this },
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forward: function(offset=1){
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return this.back(-offset) },
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//*/
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// page data...
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//
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// XXX handle functions as pages...
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get data(){
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return this.store.get(this.location) },
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// XXX need to support pattern pages...
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set data(value){
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this.store.update(this.location, value) },
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// shorthands...
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// XXX need to support pattern pages...
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get text(){
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return this.data.text },
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// XXX need to support pattern pages...
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set text(value){
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this.store.update(this.location, {text: value}) },
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// relative proxies to store...
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exists: relProxy('exists'),
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match: relProxy('match'),
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delete: relProxy('delete'),
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// XXX how should this handle functions as values???
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get: function(path, referrer){
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return this.clone({
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location: path,
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referrer: referrer
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?? this.location,
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}) },
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// XXX should this be an iterator???
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each: function(path){
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var that = this
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var paths = this.match(path)
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paths = paths instanceof Array ?
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paths
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: [paths]
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return paths
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.map(function(path){
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return that.get('/'+ path) }) },
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map: function(func){
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return this.each().map(func) },
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filter: function(func){
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return this.each().filter(func) },
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reduce: function(func, dfl){
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return this.each().reduce(func, dfl) },
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//
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// Clone a page optionally asigning data into it...
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// .clone()
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// .clone({ .. }[, <clone-history>])
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// -> <page>
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//
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// Fully clone a page optionally asigning data into it...
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// .clone(true[, <clone-history>])
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// .clone(true, { .. }[, <clone-history>])
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// -> <page>
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//
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//
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// Normal cloning will inherit all the "clones" from the original
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// page overloading .location and .referrer
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//
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// NOTE: <clone-history> by default is false unless fully cloning
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//
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// XXX revise...
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// XXX HISTORY should we clear history by default...
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clone: function(data={}, history=false){
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var [data, ...args] = [...arguments]
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var full = data === true
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history =
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typeof(args[args.length-1]) == 'boolean' ?
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args.pop()
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: full
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data = full ?
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args[0] ?? {}
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: data
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return Object.assign(
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full ?
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// full copy...
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this.constructor(this.path, this.referrer, this.store)
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// NOTE: this will restrict all the clones to the first
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// generation maintaining the original (.root) page as
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// the common root...
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// this will make all the non-shadowed attrs set on the
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// root visible to all sub-pages.
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: Object.create(this.root ?? this),
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{
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root: this.root ?? this,
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location: this.location,
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referrer: this.referrer,
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},
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// XXX HISTORY...
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this.__history !== false ?
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{ __history:
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history ?
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(this.__history ?? []).slice()
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: [] }
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:{},
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//*/
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data) },
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__init__: function(path, referrer, store){
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// NOTE: this will allow inheriting .store from the prototype
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if(store){
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this.store = store }
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this.location = path
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this.referrer = referrer },
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})
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//---------------------------------------------------------------------
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// XXX add escaping...
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var MACRO_PATTERN_STR =
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[[
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// @macro(arg ..)
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// XXX add support for '\)' in args...
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'\\\\?@(?<nameInline>MACROS)\\((?<argsInline>([^)])*)\\)',
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// <macro ..> | <macro ../>
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// XXX revise escaped > and />
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'<\\s*(?<nameOpen>MACROS)(?<argsOpen>\\s+([^>/])*)?/?>',
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// </macro>
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'</\\s*(?<nameClose>MACROS)\\s*>',
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].join('|'), 'smig']
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var MACRO_PATTERN
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var MACRO_PATTERN_GROUPS =
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'<MACROS>'.split(new RegExp(`(${ MACRO_PATTERN_STR })`)).length-2
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// XXX still buggy...
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var MACRO_ARGS_PATTERN =
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RegExp('('+[
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// named args...
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'(?<nameQuoted>[a-zA-Z-_]+)\\s*=([\'"])(?<valueQuoted>([^\\3]|\\\\3)*)\\3\\s*',
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'(?<nameUnquoted>[a-zA-Z-_]+)\\s*=(?<valueUnquoted>[^\\s]*)',
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// positional args...
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'([\'"])(?<argQuoted>([^\\8]|\\\\8)*)\\8',
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'(?<arg>[^\\s]+)',
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].join('|') +')', 'smig')
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// XXX do we need basic inline and block commets a-la lisp???
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|
var COMMENT_PATTERN =
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RegExp('('+[
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// <!--[pwiki[ .. ]]-->
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'<!--\\[pwiki\\[(?<uncomment>.*)\\]\\]-->',
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|
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// <pwiki-comment> .. </pwiki-comment>
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'<\\s*pwiki-comment[^>]*>.*<\\/\\s*pwiki-comment\\s*>',
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// <pwiki-comment .. />
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'<\\s*pwiki-comment[^\\/>]*\\/>',
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].join('|') +')', 'smig')
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|
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var clearComments =
|
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module.clearComments =
|
|
function(str){
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return str
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.replace(COMMENT_PATTERN,
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function(...a){
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return a.pop().uncomment
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|| '' }) }
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|
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//
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// <item> ::=
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// <string>
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// | {
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// name: <string>,
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// type: 'inline'
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// | 'element'
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// | 'opening'
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// | 'closing',
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// args: {
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// <index>: <value>,
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// <key>: <value>,
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// ...
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// }
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// match: <string>,
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// }
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//
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//
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// NOTE: this internally uses macros' keys to generate the lexing pattern.
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//
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// XXX feels a bit ugly...
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|
var lex =
|
|
module.lex =
|
|
function*(str, macros){
|
|
// NOTE: we are doing a separate pass for comments to completely
|
|
// decouple them from the base macro syntax, making them fully
|
|
// transparent...
|
|
str = clearComments(str)
|
|
|
|
var lst = str.split(
|
|
module.MACRO_PATTERN
|
|
?? (MACRO_PATTERN = module.MACRO_PATTERN =
|
|
new RegExp(
|
|
'('+ MACRO_PATTERN_STR[0]
|
|
.replace(/MACROS/g,
|
|
Object.keys(macros).join('|')) +')',
|
|
MACRO_PATTERN_STR[1])))
|
|
|
|
var macro = false
|
|
while(lst.length > 0){
|
|
if(macro){
|
|
var match = lst.splice(0, MACRO_PATTERN_GROUPS)[0]
|
|
// NOTE: we essentially are parsing the detected macro a
|
|
// second time here, this gives us access to named groups
|
|
// avoiding maintaining match indexes with the .split(..)
|
|
// output...
|
|
// XXX for some reason .match(..) here returns a list with a string...
|
|
var cur = [...match.matchAll(MACRO_PATTERN)][0].groups
|
|
// special case: escaped inline macro -> keep as text...
|
|
if(match.startsWith('\\@')){
|
|
yield match
|
|
macro = false
|
|
continue }
|
|
// args...
|
|
var args = {}
|
|
var i = -1
|
|
for(var {groups}
|
|
of (cur.argsInline ?? cur.argsOpen ?? '')
|
|
.matchAll(MACRO_ARGS_PATTERN)){
|
|
i++
|
|
args[groups.nameQuoted ?? groups.nameUnquoted ?? i] =
|
|
groups.valueQuoted
|
|
?? groups.valueUnquoted
|
|
?? groups.argQuoted
|
|
?? groups.arg }
|
|
// macro-spec...
|
|
yield {
|
|
name: (cur.nameInline
|
|
?? cur.nameOpen
|
|
?? cur.nameClose)
|
|
.toLowerCase(),
|
|
type: match[0] == '@' ?
|
|
'inline'
|
|
: match[1] == '/' ?
|
|
'closing'
|
|
: match[match.length-2] == '/' ?
|
|
'element'
|
|
: 'opening',
|
|
args,
|
|
match,
|
|
}
|
|
macro = false
|
|
// normal text...
|
|
} else {
|
|
var str = lst.shift()
|
|
// skip empty strings from output...
|
|
if(str != ''){
|
|
yield str }
|
|
macro = true } } }
|
|
|
|
|
|
//
|
|
// <item> ::=
|
|
// <string>
|
|
// | {
|
|
// type: 'inline'
|
|
// | 'element'
|
|
// | 'block',
|
|
// body: [
|
|
// <item>,
|
|
// ...
|
|
// ],
|
|
//
|
|
// // rest of items are the same as for lex(..)
|
|
// ...
|
|
// }
|
|
//
|
|
//
|
|
// NOTE: this internaly uses macros to check for propper nesting
|
|
//
|
|
// XXX normalize lex to be a generator (???)
|
|
var group =
|
|
module.group =
|
|
function*(lex, to=false, macros){
|
|
// NOTE: we are not using for .. of .. here as it depletes the
|
|
// generator even if the end is not reached...
|
|
while(true){
|
|
var {value, done} = lex.next()
|
|
// check if unclosed blocks remaining...
|
|
if(done){
|
|
if(to){
|
|
throw new Error(
|
|
'Premature end of unpit: Expected closing "'+ to +'"') }
|
|
return }
|
|
// assert nesting rules...
|
|
if(macros[value.name] instanceof Array
|
|
&& macros[value.name].includes(to)){
|
|
throw new Error(
|
|
'Unexpected "'+ value.name +'" macro'
|
|
+(to ?
|
|
' in "'+to+'"'
|
|
: '')) }
|
|
// open block...
|
|
if(value.type == 'opening'){
|
|
value.body = [...group(lex, value.name)]
|
|
value.type = 'block'
|
|
yield value
|
|
continue
|
|
// close block...
|
|
} else if(value.type == 'closing'){
|
|
if(value.name != to){
|
|
throw new Error('Unexpected closing "'+ value.name +'"') }
|
|
// NOTE: we are intentionally not yielding the value here...
|
|
return }
|
|
yield value } }
|
|
|
|
|
|
var parse =
|
|
module.parse =
|
|
function*(str, macros){
|
|
yield* group(
|
|
lex(str, macros),
|
|
macros) }
|
|
|
|
|
|
// XXX need context -- page/store...
|
|
// XXX need to make this recursive....
|
|
// ...might even be a good idea to make the above grouo(..) and friends
|
|
// recursive too...
|
|
// XXX closure: macros
|
|
var expand =
|
|
module.expand =
|
|
function*(page, ast, state={}){
|
|
while(true){
|
|
var {value, done} = ast.next()
|
|
if(done){
|
|
return }
|
|
// text block...
|
|
if(typeof(value) == 'string'){
|
|
yield value
|
|
continue }
|
|
// macro...
|
|
var {name, args, body} = value
|
|
// XXX PAGE...
|
|
var res =
|
|
// XXX need to hav eaccess to expand(..) in the macro to be
|
|
// able to uniformly parse the body...
|
|
page.macros[name].call(page, args, body, state)
|
|
?? ''
|
|
// XXX test if iterable...
|
|
if(res instanceof Array){
|
|
// XXX recursively expand this...
|
|
yield* res
|
|
} else {
|
|
yield res } } }
|
|
|
|
|
|
// XXX macros and filters should be features for simpler plugin handlng (???)
|
|
var Page =
|
|
module.Page =
|
|
object.Constructor('Page', BasePage, {
|
|
filters: {
|
|
},
|
|
macros: {
|
|
// XXX STUB
|
|
now: function(){
|
|
return [''+ Date.now()] },
|
|
filter: function(){},
|
|
include: function(){},
|
|
source: function(){},
|
|
quote: function(){},
|
|
macro: function(){},
|
|
slot: function(){},
|
|
|
|
// nesting rules...
|
|
'else': ['macro'],
|
|
},
|
|
|
|
// XXX
|
|
expand: function(state={}){
|
|
return expand(this, parse(this.text), state)
|
|
.join('') },
|
|
})
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
|
|
var WIKIWORD_PATTERN =
|
|
RegExp('('+[
|
|
//'\\\\?(\\/|\\./|\\.\\./|>>|[A-Z][_a-z0-9]+[A-Z/])[_a-zA-Z0-9/]*',
|
|
'\\\\?\\/?(\\./|\\.\\./|>>|[A-Z][_a-z0-9]+[A-Z/])[_a-zA-Z0-9/]*',
|
|
'\\\\?\\[[^\\]]+\\]',
|
|
].join('|') +')', 'g')
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// XXX experiments and testing...
|
|
|
|
|
|
// NOTE: in general the root wiki api is simply a page instance.
|
|
// XXX not yet sure how to organize the actual alient -- UI, hooks, .. etc
|
|
module.pwiki =
|
|
Page('/', '/',
|
|
Object.assign(
|
|
Object.create(store),
|
|
require('./bootstrap')))
|
|
|
|
|
|
|
|
|
|
/**********************************************************************
|
|
* vim:set ts=4 sw=4 : */ return module })
|