Back to project page contactphotosync.
The source code is released under:
GNU General Public License
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/** * ConcatInputStreams.java - Concatenation of multiple InputStreams. * /* w w w .j ava2s.c om*/ * Copyright (C) 2012 Mansour <mansour@oxplot.com> * All rights reserved. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License * along with this program. If not, see * <http://www.gnu.org/licenses/>. */ package com.oxplot.contactphotosync; import java.io.IOException; import java.io.InputStream; import java.util.Collection; import java.util.Iterator; import java.util.NoSuchElementException; public class ConcatInputStreams extends InputStream { private Iterator<InputStream> iter; private InputStream cur; public ConcatInputStreams(Collection<InputStream> streams) { iter = streams.iterator(); try { cur = iter.next(); } catch (NoSuchElementException e) {} } @Override public int read() throws IOException { byte[] buffer = new byte[1]; int bytesRead = read(buffer); while (bytesRead == 0) bytesRead = read(buffer); return bytesRead > 0 ? (256 + buffer[0]) % 256 : -1; } @Override public int read(byte[] buffer, int offset, int length) throws IOException { if (offset < 0 || length < 0 || offset + length > buffer.length) throw new IndexOutOfBoundsException(); if (cur == null) return -1; int bytesRead = cur.read(buffer, offset, length); if (bytesRead < 0) { try { cur = iter.next(); } catch (NoSuchElementException e) { cur = null; return -1; } return 0; } else { return bytesRead; } } }