modify xml reader

Author: lsongdev

bin/xml2

@@ -0,0 +1,26 @@
+#!/usr/bin/env node
+
+const xml = require('..');
+
+const [ name, fn ] = process.argv.slice(2);
+
+const d = [];
+process.stdin
+.on('data', d.push.bind(d))
+.on('end', async () => {
+  let data = await xml.read(d.join(''));
+  if(name){
+    if(name === '-e' && fn){
+      data = eval(`(${fn})(data)`);
+    }else{
+      data = data[name];
+    }
+  }
+  try{
+    console.log(data);
+    process.exit(0);
+  }catch(e){
+    console.error(e);
+    process.exit(-1);
+  }
+})

example/demo.xml

@@ -1,15 +0,0 @@
-<import src="item.wxml" />
-<view class="question">
-  <view class="question-title">
-    <text class="question-id">{{ question.I }}</text>
-    <text>{{ question.Q }}</text>
-  </view>
-  <view wx:if="{{ question.P }}">
-    <image class="question-image" mode="aspectFit" src="https://lsong.org/~lsong/HAM/img/{{question.P}}" />
-  </view>
-  <view class="question-options">
-    <view bindtap="onTapOption" wx:for="{{ question.options }}" wx:for-item="option" wx:key="{{ question.I }}" data-option="{{ option }}" class="question-option question-option-{{index}} question-option-{{ option.style }}">
-        {{ option.text }}
-    </view>
-  </view>
-</view>

example/index.js

@@ -6,10 +6,5 @@ const printer = require('../printer');
 const traverse = require('../traverse');
 
 xml.readFile(__dirname + '/demo.xml').then(obj => {
-  traverse(obj, node => {
-    if(node.name === 'image'){
-      node.attributes.src = 'abc';
-    }
-  });
-  console.log(xml.serialize(obj));
+  console.log(obj);
 });

index.js

@@ -8,13 +8,13 @@ const EventEmitter = require('events');
 
 class XML extends EventEmitter {
   static read(str){
-    return new Promise(done => reader(done)(str));
+    return new Promise(done => reader(done)(`<root>${str}</root>`))
+      .then(root => root.children);
   }
   static async readFile(filename, options = {}){
     const readFile = promisify(fs.readFile);
     const source = await readFile(filename, 'utf8');
-    const ast = await XML.read(`<root>${source}</root>`, options);
-    return ast.children;
+    return XML.read(source, options);
   }
   static serialize(ast, options){
     return printer(ast, options);

package.json

@@ -1,12 +1,13 @@
 {
   "name": "xml2",
-  "version": "0.0.10",
+  "version": "0.0.11",
   "description": "simple xml reader and parser",
   "main": "index.js",
   "browser": "browser.js",
   "scripts": {
     "build": "rollup -c"
   },
+  "bin": "./bin/xml2",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/song940/xmljs.git"

parser.js

@@ -20,7 +20,8 @@ const ACTIONS = {
   quote: 'action-quote',
   slash: 'action-slash',
   char: 'action-char',
-  bang: 'action-bang'
+  bang: 'action-bang',
+  question: 'action-question'
 };
 
 const TYPES = {
@@ -44,6 +45,7 @@ const charToAction = {
   '=': ACTIONS.equal,
   '/': ACTIONS.slash,
   '!': ACTIONS.bang,
+  '?': ACTIONS.question,
 };
 
 const noop = () => {};
@@ -155,6 +157,10 @@ module.exports = emit => {
         state = STATES.DATA;
       },
       [ACTIONS.space]: noop,
+      [ACTIONS.question]: () => {
+        isClosing = true;
+        state = STATES.TAG_END;
+      },
       [ACTIONS.slash]: () => {
         isClosing = true;
         state = STATES.TAG_END;