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node_modules/launch-editor/index.js

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+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file at
+ * https://github.com/facebookincubator/create-react-app/blob/master/LICENSE
+ *
+ * Modified by Yuxi Evan You
+ */
+
+const fs = require('fs')
+const os = require('os')
+const path = require('path')
+const colors = require('picocolors')
+const childProcess = require('child_process')
+
+const guessEditor = require('./guess')
+const getArgumentsForPosition = require('./get-args')
+
+function wrapErrorCallback (cb) {
+  return (fileName, errorMessage) => {
+    console.log()
+    console.log(
+      colors.red('Could not open ' + path.basename(fileName) + ' in the editor.')
+    )
+    if (errorMessage) {
+      if (errorMessage[errorMessage.length - 1] !== '.') {
+        errorMessage += '.'
+      }
+      console.log(
+        colors.red('The editor process exited with an error: ' + errorMessage)
+      )
+    }
+    console.log()
+    if (cb) cb(fileName, errorMessage)
+  }
+}
+
+function isTerminalEditor (editor) {
+  switch (editor) {
+    case 'vim':
+    case 'emacs':
+    case 'nano':
+      return true
+  }
+  return false
+}
+
+const positionRE = /:(\d+)(:(\d+))?$/
+function parseFile (file) {
+  const fileName = file.replace(positionRE, '')
+  const match = file.match(positionRE)
+  const lineNumber = match && match[1]
+  const columnNumber = match && match[3]
+  return {
+    fileName,
+    lineNumber,
+    columnNumber
+  }
+}
+
+let _childProcess = null
+
+function launchEditor (file, specifiedEditor, onErrorCallback) {
+  const parsed = parseFile(file)
+  let { fileName } = parsed
+  const { lineNumber, columnNumber } = parsed
+
+  if (!fs.existsSync(fileName)) {
+    return
+  }
+
+  if (typeof specifiedEditor === 'function') {
+    onErrorCallback = specifiedEditor
+    specifiedEditor = undefined
+  }
+
+  onErrorCallback = wrapErrorCallback(onErrorCallback)
+
+  const [editor, ...args] = guessEditor(specifiedEditor)
+  if (!editor) {
+    onErrorCallback(fileName, null)
+    return
+  }
+
+  if (
+    process.platform === 'linux' &&
+    fileName.startsWith('/mnt/') &&
+    /Microsoft/i.test(os.release())
+  ) {
+    // Assume WSL / "Bash on Ubuntu on Windows" is being used, and
+    // that the file exists on the Windows file system.
+    // `os.release()` is "4.4.0-43-Microsoft" in the current release
+    // build of WSL, see: https://github.com/Microsoft/BashOnWindows/issues/423#issuecomment-221627364
+    // When a Windows editor is specified, interop functionality can
+    // handle the path translation, but only if a relative path is used.
+    fileName = path.relative('', fileName)
+  }
+
+  if (lineNumber) {
+    const extraArgs = getArgumentsForPosition(editor, fileName, lineNumber, columnNumber)
+    args.push.apply(args, extraArgs)
+  } else {
+    args.push(fileName)
+  }
+
+  if (_childProcess && isTerminalEditor(editor)) {
+    // There's an existing editor process already and it's attached
+    // to the terminal, so go kill it. Otherwise two separate editor
+    // instances attach to the stdin/stdout which gets confusing.
+    _childProcess.kill('SIGKILL')
+  }
+
+  if (process.platform === 'win32') {
+    // On Windows, launch the editor in a shell because spawn can only
+    // launch .exe files.
+    _childProcess = childProcess.spawn(
+      'cmd.exe',
+      ['/C', editor].concat(args),
+      { stdio: 'inherit' }
+    )
+  } else {
+    _childProcess = childProcess.spawn(editor, args, { stdio: 'inherit' })
+  }
+  _childProcess.on('exit', function (errorCode) {
+    _childProcess = null
+
+    if (errorCode) {
+      onErrorCallback(fileName, '(code ' + errorCode + ')')
+    }
+  })
+
+  _childProcess.on('error', function (error) {
+    onErrorCallback(fileName, error.message)
+  })
+}
+
+module.exports = launchEditor