| /* |
| * Copyright (c) 2000, 2021, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.datatransfer; |
| |
| import java.awt.EventQueue; |
| import java.awt.Graphics; |
| import java.awt.Image; |
| import java.awt.Toolkit; |
| |
| import java.awt.datatransfer.DataFlavor; |
| import java.awt.datatransfer.FlavorMap; |
| import java.awt.datatransfer.FlavorTable; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.datatransfer.UnsupportedFlavorException; |
| |
| import java.io.BufferedReader; |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.File; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.io.Reader; |
| import java.io.SequenceInputStream; |
| import java.io.StringReader; |
| |
| import java.net.URI; |
| import java.net.URISyntaxException; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.CharBuffer; |
| import java.nio.charset.Charset; |
| import java.nio.charset.CharsetEncoder; |
| import java.nio.charset.IllegalCharsetNameException; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.charset.UnsupportedCharsetException; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Modifier; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedAction; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| import java.security.ProtectionDomain; |
| |
| import java.util.*; |
| |
| import sun.datatransfer.DataFlavorUtil; |
| |
| import sun.awt.AppContext; |
| import sun.awt.ComponentFactory; |
| import sun.awt.SunToolkit; |
| |
| import java.awt.image.BufferedImage; |
| import java.awt.image.ImageObserver; |
| import java.awt.image.RenderedImage; |
| import java.awt.image.WritableRaster; |
| import java.awt.image.ColorModel; |
| |
| import javax.imageio.ImageIO; |
| import javax.imageio.ImageReader; |
| import javax.imageio.ImageReadParam; |
| import javax.imageio.ImageWriter; |
| import javax.imageio.ImageTypeSpecifier; |
| |
| import javax.imageio.spi.ImageWriterSpi; |
| |
| import javax.imageio.stream.ImageInputStream; |
| import javax.imageio.stream.ImageOutputStream; |
| |
| import sun.awt.image.ImageRepresentation; |
| import sun.awt.image.ToolkitImage; |
| |
| import java.io.FilePermission; |
| import java.util.stream.Stream; |
| |
| |
| /** |
| * Provides a set of functions to be shared among the DataFlavor class and |
| * platform-specific data transfer implementations. |
| * |
| * The concept of "flavors" and "natives" is extended to include "formats", |
| * which are the numeric values Win32 and X11 use to express particular data |
| * types. Like FlavorMap, which provides getNativesForFlavors(DataFlavor[]) and |
| * getFlavorsForNatives(String[]) functions, DataTransferer provides a set |
| * of getFormatsFor(Transferable|Flavor|Flavors) and |
| * getFlavorsFor(Format|Formats) functions. |
| * |
| * Also provided are functions for translating a Transferable into a byte |
| * array, given a source DataFlavor and a target format, and for translating |
| * a byte array or InputStream into an Object, given a source format and |
| * a target DataFlavor. |
| * |
| * @author David Mendenhall |
| * @author Danila Sinopalnikov |
| * |
| * @since 1.3.1 |
| */ |
| public abstract class DataTransferer { |
| /** |
| * The {@code DataFlavor} representing a Java text encoding String |
| * encoded in UTF-8, where |
| * <pre> |
| * representationClass = [B |
| * mimeType = "application/x-java-text-encoding" |
| * </pre> |
| */ |
| public static final DataFlavor javaTextEncodingFlavor; |
| |
| /** |
| * A collection of all natives listed in flavormap.properties with |
| * a primary MIME type of "text". |
| */ |
| private static final Set<Long> textNatives = |
| Collections.synchronizedSet(new HashSet<>()); |
| |
| /** |
| * The native encodings/charsets for the Set of textNatives. |
| */ |
| private static final Map<Long, String> nativeCharsets = |
| Collections.synchronizedMap(new HashMap<>()); |
| |
| /** |
| * The end-of-line markers for the Set of textNatives. |
| */ |
| private static final Map<Long, String> nativeEOLNs = |
| Collections.synchronizedMap(new HashMap<>()); |
| |
| /** |
| * The number of terminating NUL bytes for the Set of textNatives. |
| */ |
| private static final Map<Long, Integer> nativeTerminators = |
| Collections.synchronizedMap(new HashMap<>()); |
| |
| /** |
| * The key used to store pending data conversion requests for an AppContext. |
| */ |
| private static final String DATA_CONVERTER_KEY = "DATA_CONVERTER_KEY"; |
| |
| static { |
| DataFlavor tJavaTextEncodingFlavor = null; |
| try { |
| tJavaTextEncodingFlavor = new DataFlavor("application/x-java-text-encoding;class=\"[B\""); |
| } catch (ClassNotFoundException cannotHappen) { |
| } |
| javaTextEncodingFlavor = tJavaTextEncodingFlavor; |
| } |
| |
| /** |
| * The accessor method for the singleton DataTransferer instance. Note |
| * that in a headless environment, there may be no DataTransferer instance; |
| * instead, null will be returned. |
| */ |
| public static synchronized DataTransferer getInstance() { |
| return ((ComponentFactory) Toolkit.getDefaultToolkit()).getDataTransferer(); |
| } |
| |
| /** |
| * Converts a FlavorMap to a FlavorTable. |
| */ |
| public static FlavorTable adaptFlavorMap(final FlavorMap map) { |
| if (map instanceof FlavorTable) { |
| return (FlavorTable)map; |
| } |
| |
| return new FlavorTable() { |
| @Override |
| public Map<DataFlavor, String> getNativesForFlavors(DataFlavor[] flavors) { |
| return map.getNativesForFlavors(flavors); |
| } |
| @Override |
| public Map<String, DataFlavor> getFlavorsForNatives(String[] natives) { |
| return map.getFlavorsForNatives(natives); |
| } |
| @Override |
| public List<String> getNativesForFlavor(DataFlavor flav) { |
| Map<DataFlavor, String> natives = getNativesForFlavors(new DataFlavor[]{flav}); |
| String nat = natives.get(flav); |
| if (nat != null) { |
| return Collections.singletonList(nat); |
| } else { |
| return Collections.emptyList(); |
| } |
| } |
| @Override |
| public List<DataFlavor> getFlavorsForNative(String nat) { |
| Map<String, DataFlavor> flavors = getFlavorsForNatives(new String[]{nat}); |
| DataFlavor flavor = flavors.get(nat); |
| if (flavor != null) { |
| return Collections.singletonList(flavor); |
| } else { |
| return Collections.emptyList(); |
| } |
| } |
| }; |
| } |
| |
| /** |
| * Returns the default Unicode encoding for the platform. The encoding |
| * need not be canonical. This method is only used by the archaic function |
| * DataFlavor.getTextPlainUnicodeFlavor(). |
| */ |
| public abstract String getDefaultUnicodeEncoding(); |
| |
| /** |
| * This method is called for text flavor mappings established while parsing |
| * the flavormap.properties file. It stores the "eoln" and "terminators" |
| * parameters which are not officially part of the MIME type. They are |
| * MIME parameters specific to the flavormap.properties file format. |
| */ |
| public void registerTextFlavorProperties(String nat, String charset, |
| String eoln, String terminators) { |
| Long format = getFormatForNativeAsLong(nat); |
| |
| textNatives.add(format); |
| nativeCharsets.put(format, (charset != null && charset.length() != 0) |
| ? charset : Charset.defaultCharset().name()); |
| if (eoln != null && eoln.length() != 0 && !eoln.equals("\n")) { |
| nativeEOLNs.put(format, eoln); |
| } |
| if (terminators != null && terminators.length() != 0) { |
| Integer iTerminators = Integer.valueOf(terminators); |
| if (iTerminators > 0) { |
| nativeTerminators.put(format, iTerminators); |
| } |
| } |
| } |
| |
| /** |
| * Determines whether the native corresponding to the specified long format |
| * was listed in the flavormap.properties file. |
| */ |
| protected boolean isTextFormat(long format) { |
| return textNatives.contains(Long.valueOf(format)); |
| } |
| |
| protected String getCharsetForTextFormat(Long lFormat) { |
| return nativeCharsets.get(lFormat); |
| } |
| |
| /** |
| * Specifies whether text imported from the native system in the specified |
| * format is locale-dependent. If so, when decoding such text, |
| * 'nativeCharsets' should be ignored, and instead, the Transferable should |
| * be queried for its javaTextEncodingFlavor data for the correct encoding. |
| */ |
| public abstract boolean isLocaleDependentTextFormat(long format); |
| |
| /** |
| * Determines whether the DataFlavor corresponding to the specified long |
| * format is DataFlavor.javaFileListFlavor. |
| */ |
| public abstract boolean isFileFormat(long format); |
| |
| /** |
| * Determines whether the DataFlavor corresponding to the specified long |
| * format is DataFlavor.imageFlavor. |
| */ |
| public abstract boolean isImageFormat(long format); |
| |
| /** |
| * Determines whether the format is a URI list we can convert to |
| * a DataFlavor.javaFileListFlavor. |
| */ |
| protected boolean isURIListFormat(long format) { |
| return false; |
| } |
| |
| /** |
| * Returns a Map whose keys are all of the possible formats into which the |
| * Transferable's transfer data flavors can be translated. The value of |
| * each key is the DataFlavor in which the Transferable's data should be |
| * requested when converting to the format. |
| * <p> |
| * The map keys are sorted according to the native formats preference |
| * order. |
| */ |
| public SortedMap<Long,DataFlavor> getFormatsForTransferable(Transferable contents, |
| FlavorTable map) |
| { |
| DataFlavor[] flavors = contents.getTransferDataFlavors(); |
| if (flavors == null) { |
| return Collections.emptySortedMap(); |
| } |
| return getFormatsForFlavors(flavors, map); |
| } |
| |
| /** |
| * Returns a Map whose keys are all of the possible formats into which data |
| * in the specified DataFlavors can be translated. The value of each key |
| * is the DataFlavor in which the Transferable's data should be requested |
| * when converting to the format. |
| * <p> |
| * The map keys are sorted according to the native formats preference |
| * order. |
| * |
| * @param flavors the data flavors |
| * @param map the FlavorTable which contains mappings between |
| * DataFlavors and data formats |
| * @throws NullPointerException if flavors or map is {@code null} |
| */ |
| public SortedMap<Long, DataFlavor> getFormatsForFlavors(DataFlavor[] flavors, |
| FlavorTable map) |
| { |
| Map<Long,DataFlavor> formatMap = new HashMap<>(flavors.length); |
| Map<Long,DataFlavor> textPlainMap = new HashMap<>(flavors.length); |
| // Maps formats to indices that will be used to sort the formats |
| // according to the preference order. |
| // Larger index value corresponds to the more preferable format. |
| Map<Long, Integer> indexMap = new HashMap<>(flavors.length); |
| Map<Long, Integer> textPlainIndexMap = new HashMap<>(flavors.length); |
| |
| int currentIndex = 0; |
| |
| // Iterate backwards so that preferred DataFlavors are used over |
| // other DataFlavors. (See javadoc for |
| // Transferable.getTransferDataFlavors.) |
| for (int i = flavors.length - 1; i >= 0; i--) { |
| DataFlavor flavor = flavors[i]; |
| if (flavor == null) continue; |
| |
| // Don't explicitly test for String, since it is just a special |
| // case of Serializable |
| if (flavor.isFlavorTextType() || |
| flavor.isFlavorJavaFileListType() || |
| DataFlavor.imageFlavor.equals(flavor) || |
| flavor.isRepresentationClassSerializable() || |
| flavor.isRepresentationClassInputStream() || |
| flavor.isRepresentationClassRemote()) |
| { |
| List<String> natives = map.getNativesForFlavor(flavor); |
| |
| currentIndex += natives.size(); |
| |
| for (String aNative : natives) { |
| Long lFormat = getFormatForNativeAsLong(aNative); |
| Integer index = currentIndex--; |
| |
| formatMap.put(lFormat, flavor); |
| indexMap.put(lFormat, index); |
| |
| // SystemFlavorMap.getNativesForFlavor will return |
| // text/plain natives for all text/*. While this is good |
| // for a single text/* flavor, we would prefer that |
| // text/plain native data come from a text/plain flavor. |
| if (("text".equals(flavor.getPrimaryType()) && |
| "plain".equals(flavor.getSubType())) || |
| flavor.equals(DataFlavor.stringFlavor)) { |
| textPlainMap.put(lFormat, flavor); |
| textPlainIndexMap.put(lFormat, index); |
| } |
| } |
| |
| currentIndex += natives.size(); |
| } |
| } |
| |
| formatMap.putAll(textPlainMap); |
| indexMap.putAll(textPlainIndexMap); |
| |
| // Sort the map keys according to the formats preference order. |
| Comparator<Long> comparator = DataFlavorUtil.getIndexOrderComparator(indexMap).reversed(); |
| SortedMap<Long, DataFlavor> sortedMap = new TreeMap<>(comparator); |
| sortedMap.putAll(formatMap); |
| |
| return sortedMap; |
| } |
| |
| /** |
| * Reduces the Map output for the root function to an array of the |
| * Map's keys. |
| */ |
| public long[] getFormatsForTransferableAsArray(Transferable contents, |
| FlavorTable map) { |
| return keysToLongArray(getFormatsForTransferable(contents, map)); |
| } |
| |
| /** |
| * Returns a Map whose keys are all of the possible DataFlavors into which |
| * data in the specified formats can be translated. The value of each key |
| * is the format in which the Clipboard or dropped data should be requested |
| * when converting to the DataFlavor. |
| */ |
| public Map<DataFlavor, Long> getFlavorsForFormats(long[] formats, FlavorTable map) { |
| Map<DataFlavor, Long> flavorMap = new HashMap<>(formats.length); |
| Set<AbstractMap.SimpleEntry<Long, DataFlavor>> mappingSet = new HashSet<>(formats.length); |
| Set<DataFlavor> flavorSet = new HashSet<>(formats.length); |
| |
| // First step: build flavorSet, mappingSet and initial flavorMap |
| // flavorSet - the set of all the DataFlavors into which |
| // data in the specified formats can be translated; |
| // mappingSet - the set of all the mappings from the specified formats |
| // into any DataFlavor; |
| // flavorMap - after this step, this map maps each of the DataFlavors |
| // from flavorSet to any of the specified formats. |
| for (long format : formats) { |
| String nat = getNativeForFormat(format); |
| List<DataFlavor> flavors = map.getFlavorsForNative(nat); |
| for (DataFlavor flavor : flavors) { |
| // Don't explicitly test for String, since it is just a special |
| // case of Serializable |
| if (flavor.isFlavorTextType() || |
| flavor.isFlavorJavaFileListType() || |
| DataFlavor.imageFlavor.equals(flavor) || |
| flavor.isRepresentationClassSerializable() || |
| flavor.isRepresentationClassInputStream() || |
| flavor.isRepresentationClassRemote()) { |
| |
| AbstractMap.SimpleEntry<Long, DataFlavor> mapping = |
| new AbstractMap.SimpleEntry<>(format, flavor); |
| flavorMap.put(flavor, format); |
| mappingSet.add(mapping); |
| flavorSet.add(flavor); |
| } |
| } |
| } |
| |
| // Second step: for each DataFlavor try to figure out which of the |
| // specified formats is the best to translate to this flavor. |
| // Then map each flavor to the best format. |
| // For the given flavor, FlavorTable indicates which native will |
| // best reflect data in the specified flavor to the underlying native |
| // platform. We assume that this native is the best to translate |
| // to this flavor. |
| // Note: FlavorTable allows one-way mappings, so we can occasionally |
| // map a flavor to the format for which the corresponding |
| // format-to-flavor mapping doesn't exist. For this reason we have built |
| // a mappingSet of all format-to-flavor mappings for the specified formats |
| // and check if the format-to-flavor mapping exists for the |
| // (flavor,format) pair being added. |
| for (DataFlavor flavor : flavorSet) { |
| List<String> natives = map.getNativesForFlavor(flavor); |
| for (String aNative : natives) { |
| Long lFormat = getFormatForNativeAsLong(aNative); |
| if (mappingSet.contains(new AbstractMap.SimpleEntry<>(lFormat, flavor))) { |
| flavorMap.put(flavor, lFormat); |
| break; |
| } |
| } |
| } |
| |
| return flavorMap; |
| } |
| |
| /** |
| * Returns a Set of all DataFlavors for which |
| * 1) a mapping from at least one of the specified formats exists in the |
| * specified map and |
| * 2) the data translation for this mapping can be performed by the data |
| * transfer subsystem. |
| * |
| * @param formats the data formats |
| * @param map the FlavorTable which contains mappings between |
| * DataFlavors and data formats |
| * @throws NullPointerException if formats or map is {@code null} |
| */ |
| public Set<DataFlavor> getFlavorsForFormatsAsSet(long[] formats, FlavorTable map) { |
| Set<DataFlavor> flavorSet = new HashSet<>(formats.length); |
| |
| for (long format : formats) { |
| List<DataFlavor> flavors = map.getFlavorsForNative(getNativeForFormat(format)); |
| for (DataFlavor flavor : flavors) { |
| // Don't explicitly test for String, since it is just a special |
| // case of Serializable |
| if (flavor.isFlavorTextType() || |
| flavor.isFlavorJavaFileListType() || |
| DataFlavor.imageFlavor.equals(flavor) || |
| flavor.isRepresentationClassSerializable() || |
| flavor.isRepresentationClassInputStream() || |
| flavor.isRepresentationClassRemote()) { |
| flavorSet.add(flavor); |
| } |
| } |
| } |
| |
| return flavorSet; |
| } |
| |
| /** |
| * Returns an array of all DataFlavors for which |
| * 1) a mapping from at least one of the specified formats exists in the |
| * specified map and |
| * 2) the data translation for this mapping can be performed by the data |
| * transfer subsystem. |
| * The array will be sorted according to a |
| * {@code DataFlavorComparator} created with the specified |
| * map as an argument. |
| * |
| * @param formats the data formats |
| * @param map the FlavorTable which contains mappings between |
| * DataFlavors and data formats |
| * @throws NullPointerException if formats or map is {@code null} |
| */ |
| public DataFlavor[] getFlavorsForFormatsAsArray(long[] formats, |
| FlavorTable map) { |
| // getFlavorsForFormatsAsSet() is less expensive than |
| // getFlavorsForFormats(). |
| return setToSortedDataFlavorArray(getFlavorsForFormatsAsSet(formats, map)); |
| } |
| |
| /** |
| * Looks-up or registers the String native with the native data transfer |
| * system and returns a long format corresponding to that native. |
| */ |
| protected abstract Long getFormatForNativeAsLong(String str); |
| |
| /** |
| * Looks-up the String native corresponding to the specified long format in |
| * the native data transfer system. |
| */ |
| protected abstract String getNativeForFormat(long format); |
| |
| /* Contains common code for finding the best charset for |
| * clipboard string encoding/decoding, basing on clipboard |
| * format and localeTransferable(on decoding, if available) |
| */ |
| protected String getBestCharsetForTextFormat(Long lFormat, |
| Transferable localeTransferable) throws IOException |
| { |
| String charset = null; |
| if (localeTransferable != null && |
| isLocaleDependentTextFormat(lFormat) && |
| localeTransferable.isDataFlavorSupported(javaTextEncodingFlavor)) { |
| try { |
| byte[] charsetNameBytes = (byte[])localeTransferable |
| .getTransferData(javaTextEncodingFlavor); |
| charset = new String(charsetNameBytes, StandardCharsets.UTF_8); |
| } catch (UnsupportedFlavorException cannotHappen) { |
| } |
| } else { |
| charset = getCharsetForTextFormat(lFormat); |
| } |
| if (charset == null) { |
| // Only happens when we have a custom text type. |
| charset = Charset.defaultCharset().name(); |
| } |
| return charset; |
| } |
| |
| /** |
| * Translation function for converting string into |
| * a byte array. Search-and-replace EOLN. Encode into the |
| * target format. Append terminating NUL bytes. |
| * |
| * Java to Native string conversion |
| */ |
| private byte[] translateTransferableString(String str, |
| long format) throws IOException |
| { |
| Long lFormat = format; |
| String charset = getBestCharsetForTextFormat(lFormat, null); |
| // Search and replace EOLN. Note that if EOLN is "\n", then we |
| // never added an entry to nativeEOLNs anyway, so we'll skip this |
| // code altogether. |
| // windows: "abc\nde"->"abc\r\nde" |
| String eoln = nativeEOLNs.get(lFormat); |
| if (eoln != null) { |
| int length = str.length(); |
| StringBuilder buffer = new StringBuilder(length * 2); // 2 is a heuristic |
| for (int i = 0; i < length; i++) { |
| // Fix for 4914613 - skip native EOLN |
| if (str.startsWith(eoln, i)) { |
| buffer.append(eoln); |
| i += eoln.length() - 1; |
| continue; |
| } |
| char c = str.charAt(i); |
| if (c == '\n') { |
| buffer.append(eoln); |
| } else { |
| buffer.append(c); |
| } |
| } |
| str = buffer.toString(); |
| } |
| |
| // Encode text in target format. |
| byte[] bytes = str.getBytes(charset); |
| |
| // Append terminating NUL bytes. Note that if terminators is 0, |
| // the we never added an entry to nativeTerminators anyway, so |
| // we'll skip code altogether. |
| // "abcde" -> "abcde\0" |
| Integer terminators = nativeTerminators.get(lFormat); |
| if (terminators != null) { |
| int numTerminators = terminators; |
| byte[] terminatedBytes = |
| new byte[bytes.length + numTerminators]; |
| System.arraycopy(bytes, 0, terminatedBytes, 0, bytes.length); |
| for (int i = bytes.length; i < terminatedBytes.length; i++) { |
| terminatedBytes[i] = 0x0; |
| } |
| bytes = terminatedBytes; |
| } |
| return bytes; |
| } |
| |
| /** |
| * Translating either a byte array or an InputStream into an String. |
| * Strip terminators and search-and-replace EOLN. |
| * |
| * Native to Java string conversion |
| */ |
| private String translateBytesToString(byte[] bytes, long format, |
| Transferable localeTransferable) |
| throws IOException |
| { |
| |
| Long lFormat = format; |
| String charset = getBestCharsetForTextFormat(lFormat, localeTransferable); |
| |
| // Locate terminating NUL bytes. Note that if terminators is 0, |
| // the we never added an entry to nativeTerminators anyway, so |
| // we'll skip code altogether. |
| |
| // In other words: we are doing char alignment here basing on suggestion |
| // that count of zero-'terminators' is a number of bytes in one symbol |
| // for selected charset (clipboard format). It is not complitly true for |
| // multibyte coding like UTF-8, but helps understand the procedure. |
| // "abcde\0" -> "abcde" |
| |
| String eoln = nativeEOLNs.get(lFormat); |
| Integer terminators = nativeTerminators.get(lFormat); |
| int count; |
| if (terminators != null) { |
| int numTerminators = terminators; |
| search: |
| for (count = 0; count < (bytes.length - numTerminators + 1); count += numTerminators) { |
| for (int i = count; i < count + numTerminators; i++) { |
| if (bytes[i] != 0x0) { |
| continue search; |
| } |
| } |
| // found terminators |
| break search; |
| } |
| } else { |
| count = bytes.length; |
| } |
| |
| // Decode text to chars. Don't include any terminators. |
| String converted = new String(bytes, 0, count, charset); |
| |
| // Search and replace EOLN. Note that if EOLN is "\n", then we |
| // never added an entry to nativeEOLNs anyway, so we'll skip this |
| // code altogether. |
| // Count of NUL-terminators and EOLN coding are platform-specific and |
| // loaded from flavormap.properties file |
| // windows: "abc\r\nde" -> "abc\nde" |
| |
| if (eoln != null) { |
| |
| /* Fix for 4463560: replace EOLNs symbol-by-symbol instead |
| * of using buf.replace() |
| */ |
| |
| char[] buf = converted.toCharArray(); |
| char[] eoln_arr = eoln.toCharArray(); |
| int j = 0; |
| boolean match; |
| |
| for (int i = 0; i < buf.length; ) { |
| // Catch last few bytes |
| if (i + eoln_arr.length > buf.length) { |
| buf[j++] = buf[i++]; |
| continue; |
| } |
| |
| match = true; |
| for (int k = 0, l = i; k < eoln_arr.length; k++, l++) { |
| if (eoln_arr[k] != buf[l]) { |
| match = false; |
| break; |
| } |
| } |
| if (match) { |
| buf[j++] = '\n'; |
| i += eoln_arr.length; |
| } else { |
| buf[j++] = buf[i++]; |
| } |
| } |
| converted = new String(buf, 0, j); |
| } |
| |
| return converted; |
| } |
| |
| |
| /** |
| * Primary translation function for translating a Transferable into |
| * a byte array, given a source DataFlavor and target format. |
| */ |
| @SuppressWarnings("deprecation") |
| public byte[] translateTransferable(Transferable contents, |
| DataFlavor flavor, |
| long format) throws IOException |
| { |
| // Obtain the transfer data in the source DataFlavor. |
| // |
| // Note that we special case DataFlavor.plainTextFlavor because |
| // StringSelection supports this flavor incorrectly -- instead of |
| // returning an InputStream as the DataFlavor representation class |
| // states, it returns a Reader. Instead of using this broken |
| // functionality, we request the data in stringFlavor (the other |
| // DataFlavor which StringSelection supports) and use the String |
| // translator. |
| Object obj; |
| boolean stringSelectionHack; |
| try { |
| obj = contents.getTransferData(flavor); |
| if (obj == null) { |
| return null; |
| } |
| if (flavor.equals(DataFlavor.plainTextFlavor) && |
| !(obj instanceof InputStream)) |
| { |
| obj = contents.getTransferData(DataFlavor.stringFlavor); |
| if (obj == null) { |
| return null; |
| } |
| stringSelectionHack = true; |
| } else { |
| stringSelectionHack = false; |
| } |
| } catch (UnsupportedFlavorException e) { |
| throw new IOException(e.getMessage()); |
| } |
| |
| // Source data is a String. Search-and-replace EOLN. Encode into the |
| // target format. Append terminating NUL bytes. |
| if (stringSelectionHack || |
| (String.class.equals(flavor.getRepresentationClass()) && |
| DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| |
| String str = removeSuspectedData(flavor, contents, (String)obj); |
| |
| return translateTransferableString( |
| str, |
| format); |
| |
| // Source data is a Reader. Convert to a String and recur. In the |
| // future, we may want to rewrite this so that we encode on demand. |
| } else if (flavor.isRepresentationClassReader()) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException |
| ("cannot transfer non-text data as Reader"); |
| } |
| |
| StringBuilder buf = new StringBuilder(); |
| try (Reader r = (Reader)obj) { |
| int c; |
| while ((c = r.read()) != -1) { |
| buf.append((char)c); |
| } |
| } |
| |
| return translateTransferableString( |
| buf.toString(), |
| format); |
| |
| // Source data is a CharBuffer. Convert to a String and recur. |
| } else if (flavor.isRepresentationClassCharBuffer()) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException |
| ("cannot transfer non-text data as CharBuffer"); |
| } |
| |
| CharBuffer buffer = (CharBuffer)obj; |
| int size = buffer.remaining(); |
| char[] chars = new char[size]; |
| buffer.get(chars, 0, size); |
| |
| return translateTransferableString( |
| new String(chars), |
| format); |
| |
| // Source data is a char array. Convert to a String and recur. |
| } else if (char[].class.equals(flavor.getRepresentationClass())) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException |
| ("cannot transfer non-text data as char array"); |
| } |
| |
| return translateTransferableString( |
| new String((char[])obj), |
| format); |
| |
| // Source data is a ByteBuffer. For arbitrary flavors, simply return |
| // the array. For text flavors, decode back to a String and recur to |
| // reencode according to the requested format. |
| } else if (flavor.isRepresentationClassByteBuffer()) { |
| ByteBuffer buffer = (ByteBuffer)obj; |
| int size = buffer.remaining(); |
| byte[] bytes = new byte[size]; |
| buffer.get(bytes, 0, size); |
| |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| String sourceEncoding = DataFlavorUtil.getTextCharset(flavor); |
| return translateTransferableString( |
| new String(bytes, sourceEncoding), |
| format); |
| } else { |
| return bytes; |
| } |
| |
| // Source data is a byte array. For arbitrary flavors, simply return |
| // the array. For text flavors, decode back to a String and recur to |
| // reencode according to the requested format. |
| } else if (byte[].class.equals(flavor.getRepresentationClass())) { |
| byte[] bytes = (byte[])obj; |
| |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| String sourceEncoding = DataFlavorUtil.getTextCharset(flavor); |
| return translateTransferableString( |
| new String(bytes, sourceEncoding), |
| format); |
| } else { |
| return bytes; |
| } |
| // Source data is Image |
| } else if (DataFlavor.imageFlavor.equals(flavor)) { |
| if (!isImageFormat(format)) { |
| throw new IOException("Data translation failed: " + |
| "not an image format"); |
| } |
| |
| Image image = (Image)obj; |
| byte[] bytes = imageToPlatformBytes(image, format); |
| |
| if (bytes == null) { |
| throw new IOException("Data translation failed: " + |
| "cannot convert java image to native format"); |
| } |
| return bytes; |
| } |
| |
| byte[] theByteArray = null; |
| |
| // Target data is a file list. Source data must be a |
| // java.util.List which contains java.io.File or String instances. |
| if (isFileFormat(format)) { |
| if (!DataFlavor.javaFileListFlavor.equals(flavor)) { |
| throw new IOException("data translation failed"); |
| } |
| |
| final List<?> list = (List<?>)obj; |
| |
| final ProtectionDomain userProtectionDomain = getUserProtectionDomain(contents); |
| |
| final ArrayList<String> fileList = castToFiles(list, userProtectionDomain); |
| |
| try (ByteArrayOutputStream bos = convertFileListToBytes(fileList)) { |
| theByteArray = bos.toByteArray(); |
| } |
| |
| // Target data is a URI list. Source data must be a |
| // java.util.List which contains java.io.File or String instances. |
| } else if (isURIListFormat(format)) { |
| if (!DataFlavor.javaFileListFlavor.equals(flavor)) { |
| throw new IOException("data translation failed"); |
| } |
| String nat = getNativeForFormat(format); |
| String targetCharset = null; |
| if (nat != null) { |
| try { |
| targetCharset = new DataFlavor(nat).getParameter("charset"); |
| } catch (ClassNotFoundException cnfe) { |
| throw new IOException(cnfe); |
| } |
| } |
| if (targetCharset == null) { |
| targetCharset = "UTF-8"; |
| } |
| final List<?> list = (List<?>)obj; |
| final ProtectionDomain userProtectionDomain = getUserProtectionDomain(contents); |
| final ArrayList<String> fileList = castToFiles(list, userProtectionDomain); |
| final ArrayList<String> uriList = new ArrayList<>(fileList.size()); |
| for (String fileObject : fileList) { |
| final URI uri = new File(fileObject).toURI(); |
| // Some implementations are fussy about the number of slashes (file:///path/to/file is best) |
| try { |
| uriList.add(new URI(uri.getScheme(), "", uri.getPath(), uri.getFragment()).toString()); |
| } catch (URISyntaxException uriSyntaxException) { |
| throw new IOException(uriSyntaxException); |
| } |
| } |
| |
| byte[] eoln = "\r\n".getBytes(targetCharset); |
| |
| try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) { |
| for (String uri : uriList) { |
| byte[] bytes = uri.getBytes(targetCharset); |
| bos.write(bytes, 0, bytes.length); |
| bos.write(eoln, 0, eoln.length); |
| } |
| theByteArray = bos.toByteArray(); |
| } |
| |
| // Source data is an InputStream. For arbitrary flavors, just grab the |
| // bytes and dump them into a byte array. For text flavors, decode back |
| // to a String and recur to reencode according to the requested format. |
| } else if (flavor.isRepresentationClassInputStream()) { |
| |
| // Workaround to JDK-8024061: Exception thrown when drag and drop |
| // between two components is executed quickly. |
| // and JDK-8065098: JColorChooser no longer supports drag and drop |
| // between two JVM instances |
| if (!(obj instanceof InputStream)) { |
| return new byte[0]; |
| } |
| |
| try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) { |
| try (InputStream is = (InputStream)obj) { |
| is.mark(Integer.MAX_VALUE); |
| is.transferTo(bos); |
| is.reset(); |
| } |
| |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| byte[] bytes = bos.toByteArray(); |
| String sourceEncoding = DataFlavorUtil.getTextCharset(flavor); |
| return translateTransferableString( |
| new String(bytes, sourceEncoding), |
| format); |
| } |
| theByteArray = bos.toByteArray(); |
| } |
| |
| |
| // Source data is an RMI object |
| } else if (flavor.isRepresentationClassRemote()) { |
| theByteArray = convertObjectToBytes(DataFlavorUtil.RMI.newMarshalledObject(obj)); |
| |
| // Source data is Serializable |
| } else if (flavor.isRepresentationClassSerializable()) { |
| |
| theByteArray = convertObjectToBytes(obj); |
| |
| } else { |
| throw new IOException("data translation failed"); |
| } |
| |
| |
| |
| return theByteArray; |
| } |
| |
| private static byte[] convertObjectToBytes(Object object) throws IOException { |
| try (ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
| ObjectOutputStream oos = new ObjectOutputStream(bos)) |
| { |
| oos.writeObject(object); |
| return bos.toByteArray(); |
| } |
| } |
| |
| protected abstract ByteArrayOutputStream convertFileListToBytes(ArrayList<String> fileList) throws IOException; |
| |
| @SuppressWarnings("removal") |
| private String removeSuspectedData(DataFlavor flavor, final Transferable contents, final String str) |
| throws IOException |
| { |
| if (null == System.getSecurityManager() |
| || !flavor.isMimeTypeEqual("text/uri-list")) |
| { |
| return str; |
| } |
| |
| final ProtectionDomain userProtectionDomain = getUserProtectionDomain(contents); |
| |
| try { |
| return AccessController.doPrivileged((PrivilegedExceptionAction<String>) () -> { |
| |
| StringBuilder allowedFiles = new StringBuilder(str.length()); |
| String [] uriArray = str.split("(\\s)+"); |
| |
| for (String fileName : uriArray) |
| { |
| File file = new File(fileName); |
| if (file.exists() && |
| !(isFileInWebstartedCache(file) || |
| isForbiddenToRead(file, userProtectionDomain))) |
| { |
| if (0 != allowedFiles.length()) |
| { |
| allowedFiles.append("\\r\\n"); |
| } |
| |
| allowedFiles.append(fileName); |
| } |
| } |
| |
| return allowedFiles.toString(); |
| }); |
| } catch (PrivilegedActionException pae) { |
| throw new IOException(pae.getMessage(), pae); |
| } |
| } |
| |
| private static ProtectionDomain getUserProtectionDomain(Transferable contents) { |
| return contents.getClass().getProtectionDomain(); |
| } |
| |
| private boolean isForbiddenToRead (File file, ProtectionDomain protectionDomain) |
| { |
| if (null == protectionDomain) { |
| return false; |
| } |
| try { |
| FilePermission filePermission = |
| new FilePermission(file.getCanonicalPath(), "read, delete"); |
| if (protectionDomain.implies(filePermission)) { |
| return false; |
| } |
| } catch (IOException e) {} |
| |
| return true; |
| } |
| |
| @SuppressWarnings("removal") |
| private ArrayList<String> castToFiles(final List<?> files, |
| final ProtectionDomain userProtectionDomain) throws IOException { |
| try { |
| return AccessController.doPrivileged((PrivilegedExceptionAction<ArrayList<String>>) () -> { |
| ArrayList<String> fileList = new ArrayList<>(); |
| for (Object fileObject : files) |
| { |
| File file = castToFile(fileObject); |
| if (file != null && |
| (null == System.getSecurityManager() || |
| !(isFileInWebstartedCache(file) || |
| isForbiddenToRead(file, userProtectionDomain)))) |
| { |
| fileList.add(file.getCanonicalPath()); |
| } |
| } |
| return fileList; |
| }); |
| } catch (PrivilegedActionException pae) { |
| throw new IOException(pae.getMessage()); |
| } |
| } |
| |
| // It is important do not use user's successors |
| // of File class. |
| private File castToFile(Object fileObject) throws IOException { |
| String filePath = null; |
| if (fileObject instanceof File) { |
| filePath = ((File)fileObject).getCanonicalPath(); |
| } else if (fileObject instanceof String) { |
| filePath = (String) fileObject; |
| } else { |
| return null; |
| } |
| return new File(filePath); |
| } |
| |
| private static final String[] DEPLOYMENT_CACHE_PROPERTIES = { |
| "deployment.system.cachedir", |
| "deployment.user.cachedir", |
| "deployment.javaws.cachedir", |
| "deployment.javapi.cachedir" |
| }; |
| |
| private static final ArrayList <File> deploymentCacheDirectoryList = new ArrayList<>(); |
| |
| private static boolean isFileInWebstartedCache(File f) { |
| |
| if (deploymentCacheDirectoryList.isEmpty()) { |
| for (String cacheDirectoryProperty : DEPLOYMENT_CACHE_PROPERTIES) { |
| String cacheDirectoryPath = System.getProperty(cacheDirectoryProperty); |
| if (cacheDirectoryPath != null) { |
| try { |
| File cacheDirectory = (new File(cacheDirectoryPath)).getCanonicalFile(); |
| if (cacheDirectory != null) { |
| deploymentCacheDirectoryList.add(cacheDirectory); |
| } |
| } catch (IOException ioe) {} |
| } |
| } |
| } |
| |
| for (File deploymentCacheDirectory : deploymentCacheDirectoryList) { |
| for (File dir = f; dir != null; dir = dir.getParentFile()) { |
| if (dir.equals(deploymentCacheDirectory)) { |
| return true; |
| } |
| } |
| } |
| |
| return false; |
| } |
| |
| |
| public Object translateBytes(byte[] bytes, DataFlavor flavor, |
| long format, Transferable localeTransferable) |
| throws IOException |
| { |
| |
| Object theObject = null; |
| |
| // Source data is a file list. Use the dragQueryFile native function to |
| // do most of the decoding. Then wrap File objects around the String |
| // filenames and return a List. |
| if (isFileFormat(format)) { |
| if (!DataFlavor.javaFileListFlavor.equals(flavor)) { |
| throw new IOException("data translation failed"); |
| } |
| String[] filenames = dragQueryFile(bytes); |
| if (filenames == null) { |
| return null; |
| } |
| |
| // Convert the strings to File objects |
| File[] files = new File[filenames.length]; |
| for (int i = 0; i < filenames.length; i++) { |
| files[i] = new File(filenames[i]); |
| } |
| |
| // Turn the list of Files into a List and return |
| theObject = Arrays.asList(files); |
| |
| // Source data is a URI list. Convert to DataFlavor.javaFileListFlavor |
| // where possible. |
| } else if (isURIListFormat(format) |
| && DataFlavor.javaFileListFlavor.equals(flavor)) { |
| |
| try (ByteArrayInputStream str = new ByteArrayInputStream(bytes)) { |
| |
| URI[] uris = dragQueryURIs(str, format, localeTransferable); |
| if (uris == null) { |
| return null; |
| } |
| List<File> files = new ArrayList<>(); |
| for (URI uri : uris) { |
| try { |
| files.add(new File(uri)); |
| } catch (IllegalArgumentException illegalArg) { |
| // When converting from URIs to less generic files, |
| // common practice (Wine, SWT) seems to be to |
| // silently drop the URIs that aren't local files. |
| } |
| } |
| theObject = files; |
| } |
| |
| // Target data is a String. Strip terminating NUL bytes. Decode bytes |
| // into characters. Search-and-replace EOLN. |
| } else if (String.class.equals(flavor.getRepresentationClass()) && |
| DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| |
| theObject = translateBytesToString(bytes, format, localeTransferable); |
| |
| // Target data is a Reader. Obtain data in InputStream format, encoded |
| // as "Unicode" (utf-16be). Then use an InputStreamReader to decode |
| // back to chars on demand. |
| } else if (flavor.isRepresentationClassReader()) { |
| try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes)) { |
| theObject = translateStream(bais, |
| flavor, format, localeTransferable); |
| } |
| // Target data is a CharBuffer. Recur to obtain String and wrap. |
| } else if (flavor.isRepresentationClassCharBuffer()) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException("cannot transfer non-text data as CharBuffer"); |
| } |
| |
| CharBuffer buffer = CharBuffer.wrap( |
| translateBytesToString(bytes,format, localeTransferable)); |
| |
| theObject = constructFlavoredObject(buffer, flavor, CharBuffer.class); |
| |
| // Target data is a char array. Recur to obtain String and convert to |
| // char array. |
| } else if (char[].class.equals(flavor.getRepresentationClass())) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException |
| ("cannot transfer non-text data as char array"); |
| } |
| |
| theObject = translateBytesToString( |
| bytes, format, localeTransferable).toCharArray(); |
| |
| // Target data is a ByteBuffer. For arbitrary flavors, just return |
| // the raw bytes. For text flavors, convert to a String to strip |
| // terminators and search-and-replace EOLN, then reencode according to |
| // the requested flavor. |
| } else if (flavor.isRepresentationClassByteBuffer()) { |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| bytes = translateBytesToString( |
| bytes, format, localeTransferable).getBytes( |
| DataFlavorUtil.getTextCharset(flavor) |
| ); |
| } |
| |
| ByteBuffer buffer = ByteBuffer.wrap(bytes); |
| theObject = constructFlavoredObject(buffer, flavor, ByteBuffer.class); |
| |
| // Target data is a byte array. For arbitrary flavors, just return |
| // the raw bytes. For text flavors, convert to a String to strip |
| // terminators and search-and-replace EOLN, then reencode according to |
| // the requested flavor. |
| } else if (byte[].class.equals(flavor.getRepresentationClass())) { |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| theObject = translateBytesToString( |
| bytes, format, localeTransferable |
| ).getBytes(DataFlavorUtil.getTextCharset(flavor)); |
| } else { |
| theObject = bytes; |
| } |
| |
| // Target data is an InputStream. For arbitrary flavors, just return |
| // the raw bytes. For text flavors, decode to strip terminators and |
| // search-and-replace EOLN, then reencode according to the requested |
| // flavor. |
| } else if (flavor.isRepresentationClassInputStream()) { |
| |
| try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes)) { |
| theObject = translateStream(bais, flavor, format, localeTransferable); |
| } |
| |
| } else if (flavor.isRepresentationClassRemote()) { |
| try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes); |
| ObjectInputStream ois = new ObjectInputStream(bais)) { |
| |
| theObject = DataFlavorUtil.RMI.getMarshalledObject(ois.readObject()); |
| } catch (Exception e) { |
| throw new IOException(e.getMessage()); |
| } |
| |
| // Target data is Serializable |
| } else if (flavor.isRepresentationClassSerializable()) { |
| |
| try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes)) { |
| theObject = translateStream(bais, flavor, format, localeTransferable); |
| } |
| |
| // Target data is Image |
| } else if (DataFlavor.imageFlavor.equals(flavor)) { |
| if (!isImageFormat(format)) { |
| throw new IOException("data translation failed"); |
| } |
| |
| theObject = platformImageBytesToImage(bytes, format); |
| } |
| |
| if (theObject == null) { |
| throw new IOException("data translation failed"); |
| } |
| |
| return theObject; |
| |
| } |
| |
| /** |
| * Primary translation function for translating |
| * an InputStream into an Object, given a source format and a target |
| * DataFlavor. |
| */ |
| @SuppressWarnings("deprecation") |
| public Object translateStream(InputStream str, DataFlavor flavor, |
| long format, Transferable localeTransferable) |
| throws IOException |
| { |
| |
| Object theObject = null; |
| // Source data is a URI list. Convert to DataFlavor.javaFileListFlavor |
| // where possible. |
| if (isURIListFormat(format) |
| && DataFlavor.javaFileListFlavor.equals(flavor)) |
| { |
| |
| URI[] uris = dragQueryURIs(str, format, localeTransferable); |
| if (uris == null) { |
| return null; |
| } |
| List<File> files = new ArrayList<>(); |
| for (URI uri : uris) { |
| try { |
| files.add(new File(uri)); |
| } catch (IllegalArgumentException illegalArg) { |
| // When converting from URIs to less generic files, |
| // common practice (Wine, SWT) seems to be to |
| // silently drop the URIs that aren't local files. |
| } |
| } |
| theObject = files; |
| |
| // Target data is a String. Strip terminating NUL bytes. Decode bytes |
| // into characters. Search-and-replace EOLN. |
| } else if (String.class.equals(flavor.getRepresentationClass()) && |
| DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| |
| return translateBytesToString(inputStreamToByteArray(str), |
| format, localeTransferable); |
| |
| // Special hack to maintain backwards-compatibility with the brokenness |
| // of StringSelection. Return a StringReader instead of an InputStream. |
| // Recur to obtain String and encapsulate. |
| } else if (DataFlavor.plainTextFlavor.equals(flavor)) { |
| theObject = new StringReader(translateBytesToString( |
| inputStreamToByteArray(str), |
| format, localeTransferable)); |
| |
| // Target data is an InputStream. For arbitrary flavors, just return |
| // the raw bytes. For text flavors, decode to strip terminators and |
| // search-and-replace EOLN, then reencode according to the requested |
| // flavor. |
| } else if (flavor.isRepresentationClassInputStream()) { |
| theObject = translateStreamToInputStream(str, flavor, format, |
| localeTransferable); |
| |
| // Target data is a Reader. Obtain data in InputStream format, encoded |
| // as "Unicode" (utf-16be). Then use an InputStreamReader to decode |
| // back to chars on demand. |
| } else if (flavor.isRepresentationClassReader()) { |
| if (!(DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format))) { |
| throw new IOException |
| ("cannot transfer non-text data as Reader"); |
| } |
| |
| InputStream is = (InputStream)translateStreamToInputStream( |
| str, DataFlavor.plainTextFlavor, |
| format, localeTransferable); |
| |
| String unicode = DataFlavorUtil.getTextCharset(DataFlavor.plainTextFlavor); |
| |
| Reader reader = new InputStreamReader(is, unicode); |
| |
| theObject = constructFlavoredObject(reader, flavor, Reader.class); |
| // Target data is a byte array |
| } else if (byte[].class.equals(flavor.getRepresentationClass())) { |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| theObject = translateBytesToString(inputStreamToByteArray(str), format, localeTransferable) |
| .getBytes(DataFlavorUtil.getTextCharset(flavor)); |
| } else { |
| theObject = inputStreamToByteArray(str); |
| } |
| // Target data is an RMI object |
| } else if (flavor.isRepresentationClassRemote()) { |
| try (ObjectInputStream ois = new ObjectInputStream(str)) { |
| theObject = DataFlavorUtil.RMI.getMarshalledObject(ois.readObject()); |
| } catch (Exception e) { |
| throw new IOException(e.getMessage()); |
| } |
| |
| // Target data is Serializable |
| } else if (flavor.isRepresentationClassSerializable()) { |
| try (ObjectInputStream ois = |
| new ObjectInputStream(str)) |
| { |
| theObject = ois.readObject(); |
| } catch (Exception e) { |
| throw new IOException(e.getMessage()); |
| } |
| // Target data is Image |
| } else if (DataFlavor.imageFlavor.equals(flavor)) { |
| if (!isImageFormat(format)) { |
| throw new IOException("data translation failed"); |
| } |
| theObject = platformImageBytesToImage(inputStreamToByteArray(str), format); |
| } |
| |
| if (theObject == null) { |
| throw new IOException("data translation failed"); |
| } |
| |
| return theObject; |
| |
| } |
| |
| /** |
| * For arbitrary flavors, just use the raw InputStream. For text flavors, |
| * ReencodingInputStream will decode and reencode the InputStream on demand |
| * so that we can strip terminators and search-and-replace EOLN. |
| */ |
| private Object translateStreamToInputStream |
| (InputStream str, DataFlavor flavor, long format, |
| Transferable localeTransferable) throws IOException |
| { |
| if (DataFlavorUtil.isFlavorCharsetTextType(flavor) && isTextFormat(format)) { |
| str = new ReencodingInputStream |
| (str, format, DataFlavorUtil.getTextCharset(flavor), |
| localeTransferable); |
| } |
| |
| return constructFlavoredObject(str, flavor, InputStream.class); |
| } |
| |
| /** |
| * We support representations which are exactly of the specified Class, |
| * and also arbitrary Objects which have a constructor which takes an |
| * instance of the Class as its sole parameter. |
| */ |
| @SuppressWarnings("removal") |
| private Object constructFlavoredObject(Object arg, DataFlavor flavor, |
| Class<?> clazz) |
| throws IOException |
| { |
| final Class<?> dfrc = flavor.getRepresentationClass(); |
| |
| if (clazz.equals(dfrc)) { |
| return arg; // simple case |
| } else { |
| Constructor<?>[] constructors; |
| |
| try { |
| constructors = AccessController.doPrivileged( |
| (PrivilegedAction<Constructor<?>[]>) dfrc::getConstructors); |
| } catch (SecurityException se) { |
| throw new IOException(se.getMessage()); |
| } |
| |
| Constructor<?> constructor = Stream.of(constructors) |
| .filter(c -> Modifier.isPublic(c.getModifiers())) |
| .filter(c -> { |
| Class<?>[] ptypes = c.getParameterTypes(); |
| return ptypes != null |
| && ptypes.length == 1 |
| && clazz.equals(ptypes[0]); |
| }) |
| .findFirst() |
| .orElseThrow(() -> |
| new IOException("can't find <init>(L"+ clazz + ";)V for class: " + dfrc.getName())); |
| |
| try { |
| return constructor.newInstance(arg); |
| } catch (Exception e) { |
| throw new IOException(e.getMessage()); |
| } |
| } |
| } |
| |
| /** |
| * Used for decoding and reencoding an InputStream on demand so that we |
| * can strip NUL terminators and perform EOLN search-and-replace. |
| */ |
| public class ReencodingInputStream extends InputStream { |
| BufferedReader wrapped; |
| final char[] in = new char[2]; |
| byte[] out; |
| |
| CharsetEncoder encoder; |
| CharBuffer inBuf; |
| ByteBuffer outBuf; |
| |
| char[] eoln; |
| int numTerminators; |
| |
| boolean eos; |
| int index, limit; |
| |
| public ReencodingInputStream(InputStream bytestream, long format, |
| String targetEncoding, |
| Transferable localeTransferable) |
| throws IOException |
| { |
| Long lFormat = format; |
| |
| String sourceEncoding = getBestCharsetForTextFormat(format, localeTransferable); |
| wrapped = new BufferedReader(new InputStreamReader(bytestream, sourceEncoding)); |
| |
| if (targetEncoding == null) { |
| // Throw NullPointerException for compatibility with the former |
| // call to sun.io.CharToByteConverter.getConverter(null) |
| // (Charset.forName(null) throws unspecified IllegalArgumentException |
| // now; see 6228568) |
| throw new NullPointerException("null target encoding"); |
| } |
| |
| try { |
| encoder = Charset.forName(targetEncoding).newEncoder(); |
| out = new byte[(int)(encoder.maxBytesPerChar() * 2 + 0.5)]; |
| inBuf = CharBuffer.wrap(in); |
| outBuf = ByteBuffer.wrap(out); |
| } catch (IllegalCharsetNameException |
| | UnsupportedCharsetException |
| | UnsupportedOperationException e) { |
| throw new IOException(e.toString()); |
| } |
| |
| String sEoln = nativeEOLNs.get(lFormat); |
| if (sEoln != null) { |
| eoln = sEoln.toCharArray(); |
| } |
| |
| // A hope and a prayer that this works generically. This will |
| // definitely work on Win32. |
| Integer terminators = nativeTerminators.get(lFormat); |
| if (terminators != null) { |
| numTerminators = terminators; |
| } |
| } |
| |
| private int readChar() throws IOException { |
| int c = wrapped.read(); |
| |
| if (c == -1) { // -1 is EOS |
| eos = true; |
| return -1; |
| } |
| |
| // "c == 0" is not quite correct, but good enough on Windows. |
| if (numTerminators > 0 && c == 0) { |
| eos = true; |
| return -1; |
| } else if (eoln != null && matchCharArray(eoln, c)) { |
| c = '\n' & 0xFFFF; |
| } |
| |
| return c; |
| } |
| |
| public int read() throws IOException { |
| if (eos) { |
| return -1; |
| } |
| |
| if (index >= limit) { |
| // deal with supplementary characters |
| int c = readChar(); |
| if (c == -1) { |
| return -1; |
| } |
| |
| in[0] = (char) c; |
| in[1] = 0; |
| inBuf.limit(1); |
| if (Character.isHighSurrogate((char) c)) { |
| c = readChar(); |
| if (c != -1) { |
| in[1] = (char) c; |
| inBuf.limit(2); |
| } |
| } |
| |
| inBuf.rewind(); |
| outBuf.limit(out.length).rewind(); |
| encoder.encode(inBuf, outBuf, false); |
| outBuf.flip(); |
| limit = outBuf.limit(); |
| |
| index = 0; |
| |
| return read(); |
| } else { |
| return out[index++] & 0xFF; |
| } |
| } |
| |
| public int available() throws IOException { |
| return ((eos) ? 0 : (limit - index)); |
| } |
| |
| public void close() throws IOException { |
| wrapped.close(); |
| } |
| |
| /** |
| * Checks to see if the next array.length characters in wrapped |
| * match array. The first character is provided as c. Subsequent |
| * characters are read from wrapped itself. When this method returns, |
| * the wrapped index may be different from what it was when this |
| * method was called. |
| */ |
| private boolean matchCharArray(char[] array, int c) |
| throws IOException |
| { |
| wrapped.mark(array.length); // BufferedReader supports mark |
| |
| int count = 0; |
| if ((char)c == array[0]) { |
| for (count = 1; count < array.length; count++) { |
| c = wrapped.read(); |
| if (c == -1 || ((char)c) != array[count]) { |
| break; |
| } |
| } |
| } |
| |
| if (count == array.length) { |
| return true; |
| } else { |
| wrapped.reset(); |
| return false; |
| } |
| } |
| } |
| |
| /** |
| * Decodes a byte array into a set of String filenames. |
| */ |
| protected abstract String[] dragQueryFile(byte[] bytes); |
| |
| /** |
| * Decodes URIs from either a byte array or a stream. |
| */ |
| protected URI[] dragQueryURIs(InputStream stream, |
| long format, |
| Transferable localeTransferable) |
| throws IOException |
| { |
| throw new IOException( |
| new UnsupportedOperationException("not implemented on this platform")); |
| } |
| |
| /** |
| * Translates either a byte array or an input stream which contain |
| * platform-specific image data in the given format into an Image. |
| */ |
| |
| |
| protected abstract Image platformImageBytesToImage( |
| byte[] bytes,long format) throws IOException; |
| |
| /** |
| * Translates either a byte array or an input stream which contain |
| * an image data in the given standard format into an Image. |
| * |
| * @param mimeType image MIME type, such as: image/png, image/jpeg, image/gif |
| */ |
| protected Image standardImageBytesToImage( |
| byte[] bytes, String mimeType) throws IOException |
| { |
| |
| Iterator<ImageReader> readerIterator = ImageIO.getImageReadersByMIMEType(mimeType); |
| |
| if (!readerIterator.hasNext()) { |
| throw new IOException("No registered service provider can decode " + |
| " an image from " + mimeType); |
| } |
| |
| IOException ioe = null; |
| |
| while (readerIterator.hasNext()) { |
| ImageReader imageReader = readerIterator.next(); |
| try (ByteArrayInputStream bais = new ByteArrayInputStream(bytes)) { |
| try (ImageInputStream imageInputStream = ImageIO.createImageInputStream(bais)) { |
| ImageReadParam param = imageReader.getDefaultReadParam(); |
| imageReader.setInput(imageInputStream, true, true); |
| BufferedImage bufferedImage = imageReader.read(imageReader.getMinIndex(), param); |
| if (bufferedImage != null) { |
| return bufferedImage; |
| } |
| } finally { |
| imageReader.dispose(); |
| } |
| } catch (IOException e) { |
| ioe = e; |
| continue; |
| } |
| } |
| |
| if (ioe == null) { |
| ioe = new IOException("Registered service providers failed to decode" |
| + " an image from " + mimeType); |
| } |
| |
| throw ioe; |
| } |
| |
| /** |
| * Translates a Java Image into a byte array which contains platform- |
| * specific image data in the given format. |
| */ |
| protected abstract byte[] imageToPlatformBytes(Image image, long format) |
| throws IOException; |
| |
| /** |
| * Translates a Java Image into a byte array which contains |
| * an image data in the given standard format. |
| * |
| * @param mimeType image MIME type, such as: image/png, image/jpeg |
| */ |
| protected byte[] imageToStandardBytes(Image image, String mimeType) |
| throws IOException { |
| IOException originalIOE = null; |
| |
| Iterator<ImageWriter> writerIterator = ImageIO.getImageWritersByMIMEType(mimeType); |
| |
| if (!writerIterator.hasNext()) { |
| throw new IOException("No registered service provider can encode " + |
| " an image to " + mimeType); |
| } |
| |
| if (image instanceof RenderedImage) { |
| // Try to encode the original image. |
| try { |
| return imageToStandardBytesImpl((RenderedImage)image, mimeType); |
| } catch (IOException ioe) { |
| originalIOE = ioe; |
| } |
| } |
| |
| // Retry with a BufferedImage. |
| int width = 0; |
| int height = 0; |
| if (image instanceof ToolkitImage) { |
| ImageRepresentation ir = ((ToolkitImage)image).getImageRep(); |
| ir.reconstruct(ImageObserver.ALLBITS); |
| width = ir.getWidth(); |
| height = ir.getHeight(); |
| } else { |
| width = image.getWidth(null); |
| height = image.getHeight(null); |
| } |
| |
| ColorModel model = ColorModel.getRGBdefault(); |
| WritableRaster raster = |
| model.createCompatibleWritableRaster(width, height); |
| |
| BufferedImage bufferedImage = |
| new BufferedImage(model, raster, model.isAlphaPremultiplied(), |
| null); |
| |
| Graphics g = bufferedImage.getGraphics(); |
| try { |
| g.drawImage(image, 0, 0, width, height, null); |
| } finally { |
| g.dispose(); |
| } |
| |
| try { |
| return imageToStandardBytesImpl(bufferedImage, mimeType); |
| } catch (IOException ioe) { |
| if (originalIOE != null) { |
| throw originalIOE; |
| } else { |
| throw ioe; |
| } |
| } |
| } |
| |
| byte[] imageToStandardBytesImpl(RenderedImage renderedImage, |
| String mimeType) |
| throws IOException { |
| |
| Iterator<ImageWriter> writerIterator = ImageIO.getImageWritersByMIMEType(mimeType); |
| |
| ImageTypeSpecifier typeSpecifier = |
| new ImageTypeSpecifier(renderedImage); |
| |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| IOException ioe = null; |
| |
| while (writerIterator.hasNext()) { |
| ImageWriter imageWriter = writerIterator.next(); |
| ImageWriterSpi writerSpi = imageWriter.getOriginatingProvider(); |
| |
| if (!writerSpi.canEncodeImage(typeSpecifier)) { |
| continue; |
| } |
| |
| try { |
| try (ImageOutputStream imageOutputStream = ImageIO.createImageOutputStream(baos)) { |
| imageWriter.setOutput(imageOutputStream); |
| imageWriter.write(renderedImage); |
| imageOutputStream.flush(); |
| } |
| } catch (IOException e) { |
| imageWriter.dispose(); |
| baos.reset(); |
| ioe = e; |
| continue; |
| } |
| |
| imageWriter.dispose(); |
| baos.close(); |
| return baos.toByteArray(); |
| } |
| |
| baos.close(); |
| |
| if (ioe == null) { |
| ioe = new IOException("Registered service providers failed to encode " |
| + renderedImage + " to " + mimeType); |
| } |
| |
| throw ioe; |
| } |
| |
| /** |
| * Concatenates the data represented by two objects. Objects can be either |
| * byte arrays or instances of {@code InputStream}. If both arguments |
| * are byte arrays byte array will be returned. Otherwise an |
| * {@code InputStream} will be returned. |
| * <p> |
| * Currently is only called from native code to prepend palette data to |
| * platform-specific image data during image transfer on Win32. |
| * |
| * @param obj1 the first object to be concatenated. |
| * @param obj2 the second object to be concatenated. |
| * @return a byte array or an {@code InputStream} which represents |
| * a logical concatenation of the two arguments. |
| * @throws NullPointerException is either of the arguments is |
| * {@code null} |
| * @throws ClassCastException is either of the arguments is |
| * neither byte array nor an instance of {@code InputStream}. |
| */ |
| private Object concatData(Object obj1, Object obj2) { |
| InputStream str1 = null; |
| InputStream str2 = null; |
| |
| if (obj1 instanceof byte[]) { |
| byte[] arr1 = (byte[])obj1; |
| if (obj2 instanceof byte[]) { |
| byte[] arr2 = (byte[])obj2; |
| byte[] ret = new byte[arr1.length + arr2.length]; |
| System.arraycopy(arr1, 0, ret, 0, arr1.length); |
| System.arraycopy(arr2, 0, ret, arr1.length, arr2.length); |
| return ret; |
| } else { |
| str1 = new ByteArrayInputStream(arr1); |
| str2 = (InputStream)obj2; |
| } |
| } else { |
| str1 = (InputStream)obj1; |
| if (obj2 instanceof byte[]) { |
| str2 = new ByteArrayInputStream((byte[])obj2); |
| } else { |
| str2 = (InputStream)obj2; |
| } |
| } |
| |
| return new SequenceInputStream(str1, str2); |
| } |
| |
| public byte[] convertData(final Object source, |
| final Transferable contents, |
| final long format, |
| final Map<Long, DataFlavor> formatMap, |
| final boolean isToolkitThread) |
| throws IOException |
| { |
| byte[] ret = null; |
| |
| /* |
| * If the current thread is the Toolkit thread we should post a |
| * Runnable to the event dispatch thread associated with source Object, |
| * since translateTransferable() calls Transferable.getTransferData() |
| * that may contain client code. |
| */ |
| if (isToolkitThread) try { |
| final Stack<byte[]> stack = new Stack<>(); |
| final Runnable dataConverter = new Runnable() { |
| // Guard against multiple executions. |
| private boolean done = false; |
| public void run() { |
| if (done) { |
| return; |
| } |
| byte[] data = null; |
| try { |
| DataFlavor flavor = formatMap.get(format); |
| if (flavor != null) { |
| data = translateTransferable(contents, flavor, format); |
| } |
| } catch (Exception e) { |
| e.printStackTrace(); |
| data = null; |
| } |
| try { |
| getToolkitThreadBlockedHandler().lock(); |
| stack.push(data); |
| getToolkitThreadBlockedHandler().exit(); |
| } finally { |
| getToolkitThreadBlockedHandler().unlock(); |
| done = true; |
| } |
| } |
| }; |
| |
| final AppContext appContext = SunToolkit.targetToAppContext(source); |
| |
| getToolkitThreadBlockedHandler().lock(); |
| |
| if (appContext != null) { |
| appContext.put(DATA_CONVERTER_KEY, dataConverter); |
| } |
| |
| SunToolkit.executeOnEventHandlerThread(source, dataConverter); |
| |
| while (stack.empty()) { |
| getToolkitThreadBlockedHandler().enter(); |
| } |
| |
| if (appContext != null) { |
| appContext.remove(DATA_CONVERTER_KEY); |
| } |
| |
| ret = stack.pop(); |
| } finally { |
| getToolkitThreadBlockedHandler().unlock(); |
| } else { |
| DataFlavor flavor = formatMap.get(format); |
| if (flavor != null) { |
| ret = translateTransferable(contents, flavor, format); |
| } |
| } |
| |
| return ret; |
| } |
| |
| public void processDataConversionRequests() { |
| if (EventQueue.isDispatchThread()) { |
| AppContext appContext = AppContext.getAppContext(); |
| getToolkitThreadBlockedHandler().lock(); |
| try { |
| Runnable dataConverter = |
| (Runnable)appContext.get(DATA_CONVERTER_KEY); |
| if (dataConverter != null) { |
| dataConverter.run(); |
| appContext.remove(DATA_CONVERTER_KEY); |
| } |
| } finally { |
| getToolkitThreadBlockedHandler().unlock(); |
| } |
| } |
| } |
| |
| public abstract ToolkitThreadBlockedHandler getToolkitThreadBlockedHandler(); |
| |
| /** |
| * Helper function to reduce a Map with Long keys to a long array. |
| * <p> |
| * The map keys are sorted according to the native formats preference |
| * order. |
| */ |
| public static long[] keysToLongArray(SortedMap<Long, ?> map) { |
| Set<Long> keySet = map.keySet(); |
| long[] retval = new long[keySet.size()]; |
| int i = 0; |
| for (Iterator<Long> iter = keySet.iterator(); iter.hasNext(); i++) { |
| retval[i] = iter.next(); |
| } |
| return retval; |
| } |
| |
| /** |
| * Helper function to convert a Set of DataFlavors to a sorted array. |
| * The array will be sorted according to {@code DataFlavorComparator}. |
| */ |
| public static DataFlavor[] setToSortedDataFlavorArray(Set<DataFlavor> flavorsSet) { |
| DataFlavor[] flavors = new DataFlavor[flavorsSet.size()]; |
| flavorsSet.toArray(flavors); |
| final Comparator<DataFlavor> comparator = DataFlavorUtil.getDataFlavorComparator().reversed(); |
| Arrays.sort(flavors, comparator); |
| return flavors; |
| } |
| |
| /** |
| * Helper function to convert an InputStream to a byte[] array. |
| */ |
| protected static byte[] inputStreamToByteArray(InputStream str) |
| throws IOException |
| { |
| return str.readAllBytes(); |
| } |
| |
| /** |
| * Returns platform-specific mappings for the specified native. |
| * If there are no platform-specific mappings for this native, the method |
| * returns an empty {@code List}. |
| */ |
| public LinkedHashSet<DataFlavor> getPlatformMappingsForNative(String nat) { |
| return new LinkedHashSet<>(); |
| } |
| |
| /** |
| * Returns platform-specific mappings for the specified flavor. |
| * If there are no platform-specific mappings for this flavor, the method |
| * returns an empty {@code List}. |
| */ |
| public LinkedHashSet<String> getPlatformMappingsForFlavor(DataFlavor df) { |
| return new LinkedHashSet<>(); |
| } |
| } |
