feat(tasks): override args switch, closes #3236

Author: Guillaume Chau

packages/@vue/cli-ui/apollo-server/connectors/tasks.js

@@ -14,6 +14,7 @@ const projects = require('./projects')
 const { log } = require('../util/logger')
 const { notify } = require('../util/notification')
 const { terminate } = require('../util/terminate')
+const { parseArgs } = require('../util/parse-args')
 
 const MAX_LOGS = 2000
 const VIEW_ID = 'vue-project-tasks'
@@ -237,22 +238,21 @@ async function run (id, context) {
 
     // Answers
     const answers = prompts.getAnswers()
-    let args = []
-    let command = task.command
-
-    // Process command containing args
-    if (command.indexOf(' ')) {
-      const parts = command.split(/\s+/)
-      command = parts.shift()
-      args = parts
-    }
+    let [command, ...args] = parseArgs(task.command)
 
     // Output colors
     // See: https://www.npmjs.com/package/supports-color
     process.env.FORCE_COLOR = 1
 
     // Plugin API
     if (task.onBeforeRun) {
+      if (!answers.$_overrideArgs) {
+        const origPush = args.push.bind(args)
+        args.push = (...items) => {
+          if (items.length && args.indexOf(items[0]) !== -1) return items.length
+          return origPush(...items)
+        }
+      }
       await task.onBeforeRun({
         answers,
         args
@@ -581,6 +581,15 @@ async function restoreParameters ({ id }, context) {
   const task = findOne(id, context)
   if (task) {
     await prompts.reset()
+    if (task.prompts.length) {
+      prompts.add({
+        name: '$_overrideArgs',
+        type: 'confirm',
+        default: false,
+        message: 'org.vue.views.project-task-details.override-args.message',
+        description: 'org.vue.views.project-task-details.override-args.description'
+      })
+    }
     task.prompts.forEach(prompts.add)
     const data = getSavedData(id, context)
     if (data) {

packages/@vue/cli-ui/apollo-server/util/parse-args.js

@@ -0,0 +1,27 @@
+/**
+ * @param {string} args
+ */
+exports.parseArgs = function (args) {
+  const parts = args.split(/\s+|=/)
+  const result = []
+  let arg
+  let index = 0
+  for (const part of parts) {
+    const l = part.length
+    if (!arg && part.charAt(0) === '"') {
+      arg = part.substr(1)
+    } else if (part.charAt(l - 1) === '"' && (
+      l === 1 || part.charAt(l - 2) !== '\\'
+    )) {
+      arg += args.charAt(index - 1) + part.substr(0, l - 1)
+      result.push(arg)
+      arg = null
+    } else if (arg) {
+      arg += args.charAt(index - 1) + part
+    } else {
+      result.push(part)
+    }
+    index += part.length + 1
+  }
+  return result
+}

packages/@vue/cli-ui/locales/en.json

@@ -448,7 +448,11 @@
           "command": "Script command",
           "parameters": "Parameters",
           "more-info": "More Info",
-          "output": "Output"
+          "output": "Output",
+          "override-args": {
+            "message": "Override hard-coded arguments",
+            "description": "If enabled, hard-coded arguments in the package.json file will be replaced with the value defined below"
+          }
         },
         "project-dependencies": {
           "title": "Project dependencies",