gistfile1.txt

  /** Show cordova .getFile() problem with some filenames containing "%" char.
   *
   * We create a file with the specified name in the Download dir,
   * indicating whether or not the name of the created file is the same as
   * that specified.  On Android, the name is different if the specified
   * one contains a sequence of chars starting with a "%" and not
   * qualifying as a proper character entity - because of
   * https://github.com/apache/cordova-plugin-file/blob/master/www/android/FileSystem.js#L29
   *
   * @param(string) filename - defaults to "x%y", which shows the problem.
   */
  window.charEntityDemo = function(filename) {
    var demoDir = "Download",
        demoFilename = filename || "x%y";

    function getFSThenFile() {
      window.requestFileSystem(
        window.LocalFileSystem.PERSISTENT, 0,
        function (fileSystem) {
          fileSystem.root.getDirectory(
            demoDir,
            {create: false, exclusive: true},
            getFileThenRemove,
            function (ferr) {
              console.log("Get dir " + demoDir + " failed: " + ferr.code);
            });
        },
        function (evt) {
          console.log("Root filesystem request failed - " +
                      evt.target.error.code);
        });
    }

    function getFileThenRemove(dirEntry) {
      dirEntry.getFile(
        demoFilename,
        {create: true, exclusive: false},
        function (fileEntry) {

          /*** Report whether or not the file is named as specified: ***/
          if (fileEntry.name !== demoFilename) {
            console.log("Got file specified as: " + demoFilename +
                        ", but file entry named: " + fileEntry.name);
          } else {
            console.log("Got file, named as specified: " + fileEntry.name);
          }

          // ... and remove the file, whatever it is named.
          fileEntry.remove(
            function () {
              console.log("(" + fileEntry.name+ " removed)");
            },
            function (ferr) {
              console.log("File removal failed: " + fileEntry.name +
                          ", error code: " + ferr.code);
            });
        },
        function (ferr) {
          console.log("Failed to get: " + dirEntry.fullPath + demoFilename +
                      ", FileError code " + ferr.code);
        });
    }
    getFSThenFile();
  };