Update gitignore (sorry)

electron/node_modules/asar/lib/filesystem.js

@@ -0,0 +1,151 @@
+'use strict'
+
+const fs = require('./wrapped-fs')
+const os = require('os')
+const path = require('path')
+const { promisify } = require('util')
+const stream = require('stream')
+const getFileIntegrity = require('./integrity')
+
+const UINT32_MAX = 2 ** 32 - 1
+
+const pipeline = promisify(stream.pipeline)
+
+class Filesystem {
+  constructor (src) {
+    this.src = path.resolve(src)
+    this.header = { files: {} }
+    this.offset = BigInt(0)
+  }
+
+  searchNodeFromDirectory (p) {
+    let json = this.header
+    const dirs = p.split(path.sep)
+    for (const dir of dirs) {
+      if (dir !== '.') {
+        json = json.files[dir]
+      }
+    }
+    return json
+  }
+
+  searchNodeFromPath (p) {
+    p = path.relative(this.src, p)
+    if (!p) { return this.header }
+    const name = path.basename(p)
+    const node = this.searchNodeFromDirectory(path.dirname(p))
+    if (node.files == null) {
+      node.files = {}
+    }
+    if (node.files[name] == null) {
+      node.files[name] = {}
+    }
+    return node.files[name]
+  }
+
+  insertDirectory (p, shouldUnpack) {
+    const node = this.searchNodeFromPath(p)
+    if (shouldUnpack) {
+      node.unpacked = shouldUnpack
+    }
+    node.files = {}
+    return node.files
+  }
+
+  async insertFile (p, shouldUnpack, file, options) {
+    const dirNode = this.searchNodeFromPath(path.dirname(p))
+    const node = this.searchNodeFromPath(p)
+    if (shouldUnpack || dirNode.unpacked) {
+      node.size = file.stat.size
+      node.unpacked = true
+      node.integrity = await getFileIntegrity(p)
+      return Promise.resolve()
+    }
+
+    let size
+
+    const transformed = options.transform && options.transform(p)
+    if (transformed) {
+      const tmpdir = await fs.mkdtemp(path.join(os.tmpdir(), 'asar-'))
+      const tmpfile = path.join(tmpdir, path.basename(p))
+      const out = fs.createWriteStream(tmpfile)
+      const readStream = fs.createReadStream(p)
+
+      await pipeline(readStream, transformed, out)
+      file.transformed = {
+        path: tmpfile,
+        stat: await fs.lstat(tmpfile)
+      }
+      size = file.transformed.stat.size
+    } else {
+      size = file.stat.size
+    }
+
+    // JavaScript cannot precisely present integers >= UINT32_MAX.
+    if (size > UINT32_MAX) {
+      throw new Error(`${p}: file size can not be larger than 4.2GB`)
+    }
+
+    node.size = size
+    node.offset = this.offset.toString()
+    node.integrity = await getFileIntegrity(p)
+    if (process.platform !== 'win32' && (file.stat.mode & 0o100)) {
+      node.executable = true
+    }
+    this.offset += BigInt(size)
+  }
+
+  insertLink (p) {
+    const link = path.relative(fs.realpathSync(this.src), fs.realpathSync(p))
+    if (link.substr(0, 2) === '..') {
+      throw new Error(`${p}: file "${link}" links out of the package`)
+    }
+    const node = this.searchNodeFromPath(p)
+    node.link = link
+    return link
+  }
+
+  listFiles (options) {
+    const files = []
+
+    const fillFilesFromMetadata = function (basePath, metadata) {
+      if (!metadata.files) {
+        return
+      }
+
+      for (const [childPath, childMetadata] of Object.entries(metadata.files)) {
+        const fullPath = path.join(basePath, childPath)
+        const packState = childMetadata.unpacked ? 'unpack' : 'pack  '
+        files.push((options && options.isPack) ? `${packState} : ${fullPath}` : fullPath)
+        fillFilesFromMetadata(fullPath, childMetadata)
+      }
+    }
+
+    fillFilesFromMetadata('/', this.header)
+    return files
+  }
+
+  getNode (p) {
+    const node = this.searchNodeFromDirectory(path.dirname(p))
+    const name = path.basename(p)
+    if (name) {
+      return node.files[name]
+    } else {
+      return node
+    }
+  }
+
+  getFile (p, followLinks) {
+    followLinks = typeof followLinks === 'undefined' ? true : followLinks
+    const info = this.getNode(p)
+
+    // if followLinks is false we don't resolve symlinks
+    if (info.link && followLinks) {
+      return this.getFile(info.link)
+    } else {
+      return info
+    }
+  }
+}
+
+module.exports = Filesystem