File Create & Permission

https://github.com/kyorohiro/hello_skyengine/tree/master/dartio_file

//
// following code is checked in 2016/01/13
//
import 'package:flutter/widgets.dart';
import 'package:flutter/services.dart';
import 'dart:io';
import 'dart:convert';
import 'dart:async';
main() async {
StringBuffer buffer = new StringBuffer();
PathServiceProxy pathServiceProxy = new PathServiceProxy.unbound();
shell.connectToService("dummy", pathServiceProxy);
PathServiceGetFilesDirResponseParams dirResponse = await pathServiceProxy.ptr.getFilesDir();
Directory dir = new Directory(dirResponse.path);
//
// create File
print("###${dir.path}/dummy.txt");
File f = new File("${dir.path}/dummy.txt");
try {
await f.create(recursive: true);
RandomAccessFile rfile = await f.open(mode:FileMode.WRITE);
await rfile.writeString("hello!!");
rfile.close();
} catch(e) {
print("${e}");
}
// permission
// https://github.com/dart-lang/sdk/issues/15078
// https://github.com/dart-lang/sdk/issues/22036
// (await f.stat()).mode = 777;
Permission.chmod(777, f);
// list
await for(FileSystemEntity fse in dir.list()) {
print("${fse} ${(await fse.stat()).modeString()} ${(await fse.stat()).modified}");
buffer.write("${fse} ${(await fse.stat()).modeString()} ${(await fse.stat()).modified}\n");
}
Text t = new Text("${buffer.toString()}");
Center c = new Center(child: t);
runApp(c);
pathServiceProxy.close();
}
class Permission {
// http://stackoverflow.com/questions/27494933/create-write-a-file-which-is-having-execute-permission
static chmod(int mode, File f) {
ProcessResult result =
Process.runSync(
"chmod",["${mode}", "${f.absolute.path}"]);
return result.exitCode;
}
}