feat(handler): new handler to get content area from project file

resolve #22

Author: Val-istar-Guo

src/checkAndFormatView.js

@@ -22,6 +22,7 @@ module.exports = v => {
   }
 
   view.mili = { version }
+  view.custom = {}
 
   return view
 }

src/handlers/extractArea.js

@@ -0,0 +1,22 @@
+const createHandler = require('./createHandler')
+const readTargetFile = require('./readTargetFile')
+
+
+
+module.exports = (name, begin, end = begin) => createHandler(file => {
+  file = readTargetFile(file)
+
+  if (file.targetFile.exist) {
+    let beginIndex = file.targetFile.content.indexOf(begin)
+    beginIndex += begin.length
+    const endIndex = file.targetFile.content.indexOf(end, beginIndex)
+
+    if (beginIndex && endIndex) {
+      file.view.custom[name] = file.targetFile.content.substring(beginIndex, endIndex)
+      console.log(file.view.custom)
+
+    }
+  }
+
+  return file
+})

src/handlers/index.js

@@ -1,5 +1,6 @@
 const merge = require('./merge')
 const mustache = require('./mustache')
+const extractArea = require('./extractArea')
 
 
-module.exports = { merge, mustache }
+module.exports = { merge, mustache, extractArea }