refactor(shirelang): simplify file path handling #170

- Introduce `relativePath` function in `shirecore` to replace redundant path calculations.
- Consolidate file path logic across multiple files for consistency.
- Update `PatternSearcher` to use `URLUtil.FILE_PROTOCOL` for file system refresh.

Author: phodal

core/src/main/kotlin/com/phodal/shirecore/ProjectUtil.kt

@@ -6,6 +6,7 @@ import com.intellij.openapi.fileTypes.FileTypeManager
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.project.guessProjectDir
 import com.intellij.openapi.util.ModificationTracker
+import com.intellij.openapi.util.io.FileUtil
 import com.intellij.openapi.util.io.FileUtilRt
 import com.intellij.openapi.vcs.changes.VcsIgnoreManager
 import com.intellij.openapi.vfs.VirtualFile
@@ -46,6 +47,12 @@ fun VirtualFile.canBeAdded(project: Project): Boolean {
     return true
 }
 
+fun VirtualFile.relativePath(project: Project): String {
+    val projectDir = project.guessProjectDir()!!.toNioPath().toFile()
+    val relativePath = FileUtil.getRelativePath(projectDir, this.toNioPath().toFile())
+    return relativePath ?: this.path
+}
+
 fun isIgnoredByVcs(project: Project?, file: VirtualFile?): Boolean {
     val ignoreManager = VcsIgnoreManager.getInstance(project!!)
     return ignoreManager.isPotentiallyIgnoredFile(file!!)

core/src/main/kotlin/com/phodal/shirecore/ui/input/ShireInput.kt

@@ -25,6 +25,7 @@ import com.intellij.icons.AllIcons
 import com.intellij.ui.components.JBScrollPane
 import javax.swing.border.EmptyBorder
 import com.intellij.util.ui.JBUI
+import com.phodal.shirecore.relativePath
 import java.awt.event.MouseAdapter
 import java.awt.event.MouseEvent
 
@@ -92,14 +93,7 @@ class ShireInput(val project: Project) : JPanel(BorderLayout()), Disposable {
                         listModel.remove(index)
                     } else {
                         element.containingFile?.let { psiFile ->
-                            val virtualFile = psiFile.virtualFile
-                            val projectBasePath = project.basePath
-                            val filePath = virtualFile.path
-                            val relativePath = if (projectBasePath != null && filePath.startsWith(projectBasePath)) {
-                                filePath.substring(projectBasePath.length + 1)
-                            } else {
-                                filePath
-                            }
+                            val relativePath = psiFile.virtualFile.relativePath(project)
                             inputSection.appendText("\n/file:${relativePath}")
                         }
                     }

shirelang/src/main/kotlin/com/phodal/shirelang/compiler/execute/command/FileShireCommand.kt

@@ -4,11 +4,10 @@ import com.intellij.lang.LanguageCommenters
 import com.phodal.shirelang.compiler.ast.LineInfo
 import com.intellij.openapi.diagnostic.logger
 import com.intellij.openapi.project.Project
-import com.intellij.openapi.project.guessProjectDir
-import com.intellij.openapi.util.io.FileUtil
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.psi.PsiManager
 import com.phodal.shirecore.lookupFile
+import com.phodal.shirecore.relativePath
 
 /**
  * FileAutoCommand is responsible for reading a file and returning its contents.
@@ -32,14 +31,9 @@ class FileShireCommand(private val myProject: Project, private val prop: String)
 
         val fileContent = LineInfo.fromString(prop)?.splitContent(content) ?: content
         val language = PsiManager.getInstance(myProject).findFile(virtualFile)?.language
-        val lang = language
-            ?.displayName
-            ?: "plaintext"
-
-        val relativePath = FileUtil.getRelativePath(
-            myProject.guessProjectDir()!!.toNioPath().toFile(),
-            virtualFile.toNioPath().toFile()
-        )
+        val lang = language?.displayName ?: "plaintext"
+
+        val relativePath = virtualFile.relativePath(myProject)
 
         val commentPrefix = language?.let { LanguageCommenters.INSTANCE.forLanguage(it).lineCommentPrefix } ?: "//"
 

shirelang/src/main/kotlin/com/phodal/shirelang/compiler/execute/searcher/PatternSearcher.kt

@@ -7,6 +7,7 @@ import com.intellij.openapi.vfs.VfsUtilCore
 import com.intellij.openapi.vfs.VirtualFile
 import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.openapi.vfs.VirtualFileVisitor
+import com.intellij.util.io.URLUtil
 import java.util.regex.Pattern
 
 object PatternSearcher {
@@ -27,8 +28,8 @@ object PatternSearcher {
      * @return A list of VirtualFile objects that match the specified regular expression. If no matching files are found, an empty list is returned.
      */
     fun findFilesByRegex(project: Project, regex: String): List<VirtualFile> {
-        if (PatternSearcher.cache.containsKey(regex)) {
-            return PatternSearcher.cache[regex]!!
+        if (cache.containsKey(regex)) {
+            return cache[regex]!!
         }
 
         val pattern: Pattern = try {
@@ -42,7 +43,7 @@ object PatternSearcher {
 
         val matchingFiles: MutableList<VirtualFile> = ArrayList()
 
-        VirtualFileManager.getInstance().getFileSystem("file").refresh(false)
+        VirtualFileManager.getInstance().getFileSystem(URLUtil.FILE_PROTOCOL).refresh(false)
 
         VfsUtilCore.visitChildrenRecursively(baseDir, object : VirtualFileVisitor<Any>() {
             override fun visitFile(file: VirtualFile): Boolean {