Java tutorial
/* * * This file is part of the iText (R) project. Copyright (c) 1998-2019 iText Group NV * Authors: Bruno Lowagie, Paulo Soares, et al. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License version 3 * as published by the Free Software Foundation with the addition of the * following permission added to Section 15 as permitted in Section 7(a): * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT * OF THIRD PARTY RIGHTS * * 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 Affero General Public License for more details. * You should have received a copy of the GNU Affero General Public License * along with this program; if not, see http://www.gnu.org/licenses or write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA, 02110-1301 USA, or download the license from the following URL: * http://itextpdf.com/terms-of-use/ * * The interactive user interfaces in modified source and object code versions * of this program must display Appropriate Legal Notices, as required under * Section 5 of the GNU Affero General Public License. * * In accordance with Section 7(b) of the GNU Affero General Public License, * a covered work must retain the producer line in every PDF that is created * or manipulated using iText. * * You can be released from the requirements of the license by purchasing * a commercial license. Buying such a license is mandatory as soon as you * develop commercial activities involving the iText software without * disclosing the source code of your own applications. * These activities include: offering paid services to customers as an ASP, * serving PDFs on the fly in a web application, shipping iText with a closed * source product. * * For more information, please contact iText Software Corp. at this * address: sales@itextpdf.com */ package com.itextpdf.text.pdf; import java.io.FileInputStream; import java.io.InputStream; import java.io.UnsupportedEncodingException; import java.util.HashMap; import com.itextpdf.text.ExceptionConverter; import com.itextpdf.text.error_messages.MessageLocalization; public class ICC_Profile { protected byte[] data; protected int numComponents; private static HashMap<String, Integer> cstags = new HashMap<String, Integer>(); protected ICC_Profile() { } public static ICC_Profile getInstance(byte[] data, int numComponents) { if (data.length < 128 || data[36] != 0x61 || data[37] != 0x63 || data[38] != 0x73 || data[39] != 0x70) throw new IllegalArgumentException(MessageLocalization.getComposedMessage("invalid.icc.profile")); try { ICC_Profile icc = new ICC_Profile(); icc.data = data; Integer cs; cs = cstags.get(new String(data, 16, 4, "US-ASCII")); int nc = cs == null ? 0 : cs.intValue(); icc.numComponents = nc; // invalid ICC if (nc != numComponents) { throw new IllegalArgumentException("ICC profile contains " + nc + " component(s), the image data contains " + numComponents + " component(s)"); } return icc; } catch (UnsupportedEncodingException e) { throw new ExceptionConverter(e); } } public static ICC_Profile getInstance(byte[] data) { try { Integer cs; cs = cstags.get(new String(data, 16, 4, "US-ASCII")); int numComponents = cs == null ? 0 : cs.intValue(); return getInstance(data, numComponents); } catch (UnsupportedEncodingException e) { throw new ExceptionConverter(e); } } public static ICC_Profile getInstance(InputStream file) { try { byte[] head = new byte[128]; int remain = head.length; int ptr = 0; while (remain > 0) { int n = file.read(head, ptr, remain); if (n < 0) throw new IllegalArgumentException( MessageLocalization.getComposedMessage("invalid.icc.profile")); remain -= n; ptr += n; } if (head[36] != 0x61 || head[37] != 0x63 || head[38] != 0x73 || head[39] != 0x70) throw new IllegalArgumentException(MessageLocalization.getComposedMessage("invalid.icc.profile")); remain = (head[0] & 0xff) << 24 | (head[1] & 0xff) << 16 | (head[2] & 0xff) << 8 | head[3] & 0xff; byte[] icc = new byte[remain]; System.arraycopy(head, 0, icc, 0, head.length); remain -= head.length; ptr = head.length; while (remain > 0) { int n = file.read(icc, ptr, remain); if (n < 0) throw new IllegalArgumentException( MessageLocalization.getComposedMessage("invalid.icc.profile")); remain -= n; ptr += n; } return getInstance(icc); } catch (Exception ex) { throw new ExceptionConverter(ex); } } public static ICC_Profile GetInstance(String fname) { FileInputStream fs = null; try { fs = new FileInputStream(fname); ICC_Profile icc = getInstance(fs); return icc; } catch (Exception ex) { throw new ExceptionConverter(ex); } finally { try { fs.close(); } catch (Exception x) { } } } public byte[] getData() { return data; } public int getNumComponents() { return numComponents; } static { cstags.put("XYZ ", Integer.valueOf(3)); cstags.put("Lab ", Integer.valueOf(3)); cstags.put("Luv ", Integer.valueOf(3)); cstags.put("YCbr", Integer.valueOf(3)); cstags.put("Yxy ", Integer.valueOf(3)); cstags.put("RGB ", Integer.valueOf(3)); cstags.put("GRAY", Integer.valueOf(1)); cstags.put("HSV ", Integer.valueOf(3)); cstags.put("HLS ", Integer.valueOf(3)); cstags.put("CMYK", Integer.valueOf(4)); cstags.put("CMY ", Integer.valueOf(3)); cstags.put("2CLR", Integer.valueOf(2)); cstags.put("3CLR", Integer.valueOf(3)); cstags.put("4CLR", Integer.valueOf(4)); cstags.put("5CLR", Integer.valueOf(5)); cstags.put("6CLR", Integer.valueOf(6)); cstags.put("7CLR", Integer.valueOf(7)); cstags.put("8CLR", Integer.valueOf(8)); cstags.put("9CLR", Integer.valueOf(9)); cstags.put("ACLR", Integer.valueOf(10)); cstags.put("BCLR", Integer.valueOf(11)); cstags.put("CCLR", Integer.valueOf(12)); cstags.put("DCLR", Integer.valueOf(13)); cstags.put("ECLR", Integer.valueOf(14)); cstags.put("FCLR", Integer.valueOf(15)); } }