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/*
* Copyright (C)2005-2012 Haxe Foundation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
package python.io;
import haxe.io.Eof;
import haxe.io.Input;
import python.Bytearray;
import python.lib.io.IOBase;
import python.lib.io.RawIOBase;
class NativeInput<T:IOBase> extends Input{
var stream:T;
var wasEof:Bool;
function new (s:T) {
this.stream = s;
wasEof = false;
if (!stream.readable()) throw "Write-only stream";
}
public var canSeek(get_canSeek, null):Bool;
private function get_canSeek():Bool
{
return stream.seekable();
}
override public function close():Void
{
stream.close();
}
public function tell() : Int
{
return stream.tell();
}
function throwEof() {
wasEof = true;
throw new Eof();
}
public function eof() {
return wasEof;
}
function readinto (b:Bytearray):Int {
throw "abstract method, should be overriden";
}
function seek (p:Int, mode:sys.io.FileSeek) {
throw "abstract method, should be overriden";
}
override public function readBytes(s:haxe.io.Bytes, pos:Int, len:Int):Int
{
if( pos < 0 || len < 0 || pos + len > s.length )
throw haxe.io.Error.OutsideBounds;
if (canSeek) {
seek(pos, SeekBegin);
} else if (pos > 0) {
throw "Cannot call readBytes for pos > 0 (" + pos + ") on not seekable stream";
}
var ba = new Bytearray(len);
var ret = readinto(ba);
s.blit(pos, haxe.io.Bytes.ofData(ba) ,0,len);
if (ret == 0)
throwEof();
return ret;
}
}
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