* first action! (#1)

node_modules/ignore-walk/index.js

@@ -0,0 +1,268 @@
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const EE = require('events').EventEmitter
+const Minimatch = require('minimatch').Minimatch
+
+class Walker extends EE {
+  constructor (opts) {
+    opts = opts || {}
+    super(opts)
+    this.path = opts.path || process.cwd()
+    this.basename = path.basename(this.path)
+    this.ignoreFiles = opts.ignoreFiles || [ '.ignore' ]
+    this.ignoreRules = {}
+    this.parent = opts.parent || null
+    this.includeEmpty = !!opts.includeEmpty
+    this.root = this.parent ? this.parent.root : this.path
+    this.follow = !!opts.follow
+    this.result = this.parent ? this.parent.result : []
+    this.entries = null
+    this.sawError = false
+  }
+
+  sort (a, b) {
+    return a.localeCompare(b)
+  }
+
+  emit (ev, data) {
+    let ret = false
+    if (!(this.sawError && ev === 'error')) {
+      if (ev === 'error')
+        this.sawError = true
+      else if (ev === 'done' && !this.parent) {
+        data = data.map(e => /^@/.test(e) ? `./${e}` : e).sort(this.sort)
+        this.result = data
+      }
+
+      if (ev === 'error' && this.parent)
+        ret = this.parent.emit('error', data)
+      else
+        ret = super.emit(ev, data)
+    }
+    return ret
+  }
+
+  start () {
+    fs.readdir(this.path, (er, entries) =>
+      er ? this.emit('error', er) : this.onReaddir(entries))
+    return this
+  }
+
+  isIgnoreFile (e) {
+    return e !== "." &&
+      e !== ".." &&
+      -1 !== this.ignoreFiles.indexOf(e)
+  }
+
+  onReaddir (entries) {
+    this.entries = entries
+    if (entries.length === 0) {
+      if (this.includeEmpty)
+        this.result.push(this.path.substr(this.root.length + 1))
+      this.emit('done', this.result)
+    } else {
+      const hasIg = this.entries.some(e =>
+        this.isIgnoreFile(e))
+
+      if (hasIg)
+        this.addIgnoreFiles()
+      else
+        this.filterEntries()
+    }
+  }
+
+  addIgnoreFiles () {
+    const newIg = this.entries
+      .filter(e => this.isIgnoreFile(e))
+
+    let igCount = newIg.length
+    const then = _ => {
+      if (--igCount === 0)
+        this.filterEntries()
+    }
+
+    newIg.forEach(e => this.addIgnoreFile(e, then))
+  }
+
+  addIgnoreFile (file, then) {
+    const ig = path.resolve(this.path, file)
+    fs.readFile(ig, 'utf8', (er, data) =>
+      er ? this.emit('error', er) : this.onReadIgnoreFile(file, data, then))
+  }
+
+  onReadIgnoreFile (file, data, then) {
+    const mmopt = {
+      matchBase: true,
+      dot: true,
+      flipNegate: true,
+      nocase: true
+    }
+    const rules = data.split(/\r?\n/)
+      .filter(line => !/^#|^$/.test(line.trim()))
+      .map(r => new Minimatch(r, mmopt))
+
+    this.ignoreRules[file] = rules
+
+    then()
+  }
+
+  filterEntries () {
+    // at this point we either have ignore rules, or just inheriting
+    // this exclusion is at the point where we know the list of
+    // entries in the dir, but don't know what they are.  since
+    // some of them *might* be directories, we have to run the
+    // match in dir-mode as well, so that we'll pick up partials
+    // of files that will be included later.  Anything included
+    // at this point will be checked again later once we know
+    // what it is.
+    const filtered = this.entries.map(entry => {
+      // at this point, we don't know if it's a dir or not.
+      const passFile = this.filterEntry(entry)
+      const passDir = this.filterEntry(entry, true)
+      return (passFile || passDir) ? [entry, passFile, passDir] : false
+    }).filter(e => e)
+
+    // now we stat them all
+    // if it's a dir, and passes as a dir, then recurse
+    // if it's not a dir, but passes as a file, add to set
+    let entryCount = filtered.length
+    if (entryCount === 0) {
+      this.emit('done', this.result)
+    } else {
+      const then = _ => {
+        if (-- entryCount === 0)
+          this.emit('done', this.result)
+      }
+      filtered.forEach(filt => {
+        const entry = filt[0]
+        const file = filt[1]
+        const dir = filt[2]
+        this.stat(entry, file, dir, then)
+      })
+    }
+  }
+
+  onstat (st, entry, file, dir, then) {
+    const abs = this.path + '/' + entry
+    if (!st.isDirectory()) {
+      if (file)
+        this.result.push(abs.substr(this.root.length + 1))
+      then()
+    } else {
+      // is a directory
+      if (dir)
+        this.walker(entry, then)
+      else
+        then()
+    }
+  }
+
+  stat (entry, file, dir, then) {
+    const abs = this.path + '/' + entry
+    fs[this.follow ? 'stat' : 'lstat'](abs, (er, st) => {
+      if (er)
+        this.emit('error', er)
+      else
+        this.onstat(st, entry, file, dir, then)
+    })
+  }
+
+  walkerOpt (entry) {
+    return {
+      path: this.path + '/' + entry,
+      parent: this,
+      ignoreFiles: this.ignoreFiles,
+      follow: this.follow,
+      includeEmpty: this.includeEmpty
+    }
+  }
+
+  walker (entry, then) {
+    new Walker(this.walkerOpt(entry)).on('done', then).start()
+  }
+
+  filterEntry (entry, partial) {
+    let included = true
+
+    // this = /a/b/c
+    // entry = d
+    // parent /a/b sees c/d
+    if (this.parent && this.parent.filterEntry) {
+      var pt = this.basename + "/" + entry
+      included = this.parent.filterEntry(pt, partial)
+    }
+
+    this.ignoreFiles.forEach(f => {
+      if (this.ignoreRules[f]) {
+        this.ignoreRules[f].forEach(rule => {
+          // negation means inclusion
+          // so if it's negated, and already included, no need to check
+          // likewise if it's neither negated nor included
+          if (rule.negate !== included) {
+            // first, match against /foo/bar
+            // then, against foo/bar
+            // then, in the case of partials, match with a /
+            const match = rule.match('/' + entry) ||
+              rule.match(entry) ||
+              (!!partial && (
+                rule.match('/' + entry + '/') ||
+                rule.match(entry + '/'))) ||
+              (!!partial && rule.negate && (
+                rule.match('/' + entry, true) ||
+                rule.match(entry, true)))
+
+            if (match)
+              included = rule.negate
+          }
+        })
+      }
+    })
+
+    return included
+  }
+}
+
+class WalkerSync extends Walker {
+  constructor (opt) {
+    super(opt)
+  }
+
+  start () {
+    this.onReaddir(fs.readdirSync(this.path))
+    return this
+  }
+
+  addIgnoreFile (file, then) {
+    const ig = path.resolve(this.path, file)
+    this.onReadIgnoreFile(file, fs.readFileSync(ig, 'utf8'), then)
+  }
+
+  stat (entry, file, dir, then) {
+    const abs = this.path + '/' + entry
+    const st = fs[this.follow ? 'statSync' : 'lstatSync'](abs)
+    this.onstat(st, entry, file, dir, then)
+  }
+
+  walker (entry, then) {
+    new WalkerSync(this.walkerOpt(entry)).start()
+    then()
+  }
+}
+
+const walk = (options, callback) => {
+  const p = new Promise((resolve, reject) => {
+    new Walker(options).on('done', resolve).on('error', reject).start()
+  })
+  return callback ? p.then(res => callback(null, res), callback) : p
+}
+
+const walkSync = options => {
+  return new WalkerSync(options).start().result
+}
+
+module.exports = walk
+walk.sync = walkSync
+walk.Walker = Walker
+walk.WalkerSync = WalkerSync