fix(devins-lang): improve file lookup logic in AutoCommand #101

The file lookup logic in `FileAutoCommand.kt` has been refactored to use the `lookupFile` method from `AutoCommand.kt`, which simplifies the code and improves readability. The old implementation used `guessProjectDir` and `VirtualFileManager` directly, which was

exts/devins-lang/src/main/kotlin/cc/unitmesh/devti/language/compiler/AutoCommand.kt

@@ -1,5 +1,20 @@
 package cc.unitmesh.devti.language.compiler
 
+import com.intellij.openapi.project.Project
+import com.intellij.openapi.project.guessProjectDir
+import com.intellij.openapi.vfs.VirtualFile
+import com.intellij.openapi.vfs.VirtualFileManager
+
 interface AutoCommand {
     fun execute(): String?
 }
+
+fun Project.lookupFile(path: String): VirtualFile? {
+    val projectPath = this.guessProjectDir()?.toNioPath()
+    val realpath = projectPath?.resolve(path)
+
+    val virtualFile =
+        VirtualFileManager.getInstance().findFileByUrl("file://${realpath?.toAbsolutePath()}")
+    return virtualFile
+}
+

exts/devins-lang/src/main/kotlin/cc/unitmesh/devti/language/compiler/FileAutoCommand.kt

@@ -4,6 +4,7 @@ import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.project.guessProjectDir
 import com.intellij.openapi.util.TextRange
+import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.psi.PsiManager
 
@@ -21,15 +22,11 @@ class FileAutoCommand(private val myProject: Project, private val prop: String)
             null
         }
 
-        val projectPath = myProject.guessProjectDir()?.toNioPath()
-        val realpath = projectPath?.resolve(prop.trim())
-
-        val virtualFile =
-            VirtualFileManager.getInstance().findFileByUrl("file://${realpath?.toAbsolutePath()}")
+        val virtualFile = myProject.lookupFile(prop.trim())
 
         val contentsToByteArray = virtualFile?.contentsToByteArray()
         if (contentsToByteArray == null) {
-            logger.warn("File not found: $realpath")
+            logger.warn("File not found: $virtualFile")
             return null
         }
 
@@ -58,4 +55,4 @@ class FileAutoCommand(private val myProject: Project, private val prop: String)
 
         return output.toString()
     }
-}
+}