IntelliJEval版FileStatusBarプラグイン

plugin.groovy

import com.intellij.openapi.fileEditor.FileEditorManager
import com.intellij.openapi.fileEditor.FileEditorManagerListener
import com.intellij.openapi.vfs.VirtualFile
import com.intellij.openapi.wm.WindowManager

import static intellijeval.PluginUtil.*
import static com.intellij.openapi.util.io.FileUtil.*


fileEditorManager = FileEditorManager.getInstance(project)
def femListener = getGlobalVar("femListener")
if (femListener) {
  fileEditorManager.removeFileEditorManagerListener(femListener)
  show("remove listener")
}
femListener = [
    fileOpened: { f, v -> populateStatusBar(v) },
    fileClosed: { f, v -> },
    selectionChanged: { e -> populateStatusBar(e.newFile) }
] as FileEditorManagerListener
setGlobalVar("femListener", femListener)

fileEditorManager.addFileEditorManagerListener(femListener)
show("set listener")
show("finish")


private def populateStatusBar(VirtualFile v) {
  statusBar = WindowManager.instance.getStatusBar(project)
  if (v == null) statusBar.info = ""
  else {
    f = new File(v.path)
    if (f.exists()) {
      isBinary = v.fileType.binary
      linebreak = isBinary ? "binary"
                  : getLineBreak(f, v.charset.displayName())
//      statusBar.info = sprintf("%s %,d byte(s) [%s] %tY-%<tm-%<td %<tH:%<tM:%<tS", [f.name, f.length(), linebreak, f.lastModified()]);
      statusBar.info = sprintf("%s %,d byte(s) [%s]", [f.name, f.length(), linebreak ]);
    }
    else statusBar.info = ""
  }
}

private def getLineBreak(File f, enc) {
  lineBreak = "???";
  try {
    // とりあえず 1024byte 読み込んで改行コードをチェックする
    char[] chars = f.withReader(enc) { r -> loadText(r, 1024) }
    for (int i = 0; i < chars.length; i++) {
      if ('\n' == chars[i]) {
        lineBreak = "unix";
        break;
      }
      else if ('\r' == chars[i]) {
        if (i + 1 < chars.length && '\n' == chars[i + 1]) {
          lineBreak = "windows";
          break;
        }
        else {
          lineBreak = "mac";
          break;
        }
      }
    }
  }
  catch (IOException ignore) {}
  lineBreak;
}