日本語のファイルを読み込んで1行ごとにJSのstringとして出力するJXA

itunes-replace-song-name.scpt

ObjC.import('Foundation');

var app = Application.currentApplication();
app.includeStandardAdditions = true;

var path = app.chooseFile();

var pipe = $.NSPipe.pipe;
var file = pipe.fileHandleForReading; // NSFileHandle
var task = $.NSTask.alloc.init;

task.launchPath = '/bin/cat';
task.arguments = [path.toString()];
task.standardOutput = pipe;

task.launch;

var data = file.readDataToEndOfFile;
file.closeFile;

data = $.NSString.alloc.initWithDataEncoding(data, $.NSUTF8StringEncoding);
var str   = ObjC.unwrap(data);
var lines = str.split('\n');

var itunesApp = Application("iTunes");
itunesApp.selection().forEach(function(track, idx) {
  track.name = lines[idx];
});

read-japanese.scpt

ObjC.import('Foundation');

var app = Application.currentApplication();
app.includeStandardAdditions = true;

var path = app.chooseFile();

var pipe = $.NSPipe.pipe;
var file = pipe.fileHandleForReading; // NSFileHandle
var task = $.NSTask.alloc.init;

task.launchPath = '/bin/cat';
task.arguments = [path.toString()];
task.standardOutput = pipe;

task.launch;

var data = file.readDataToEndOfFile;
file.closeFile;

data = $.NSString.alloc.initWithDataEncoding(data, $.NSUTF8StringEncoding);
var str   = ObjC.unwrap(data);
var lines = str.split('\n');
lines.forEach(function(line) {
  console.log(line);
});