/**
* Check to see if this mime type is one of the types seen during initialisation or has been added
* at some later stage using addKnownMimeType(...)
*
* @param mimeType
* @return true if the mimeType is in the list else false is returned
* @see #addKnownMimeType(String mimetype)
*/
public static boolean isMimeTypeKnown(final MimeType mimeType) {
try {
Set s = (Set) mimeTypes.get(mimeType.getMediaType());
if (s == null) {
return false;
}
return s.contains(mimeType.getSubType());
} catch (MimeException e) {
return false;
}
}
/**
* Returns a <code>List</code> of <code>DataFlavor</code>s to which the specified <code>String
* </code> native can be translated by the data transfer subsystem. The <code>List</code> will be
* sorted from best <code>DataFlavor</code> to worst. That is, the first <code>DataFlavor</code>
* will best reflect data in the specified native to a Java application.
*
* <p>If the specified native is previously unknown to the data transfer subsystem, and that
* native has been properly encoded, then invoking this method will establish a mapping in both
* directions between the specified native and a <code>DataFlavor</code> whose MIME type is a
* decoded version of the native.
*
* <p>If the specified native is not a properly encoded native and the mappings for this native
* have not been altered with <code>setFlavorsForNative</code>, then the contents of the <code>
* List</code> is platform dependent, but <code>null</code> cannot be returned.
*
* @param nat the native whose corresponding <code>DataFlavor</code>s should be returned. If
* <code>null</code> is specified, all <code>DataFlavor</code>s currently known to the data
* transfer subsystem are returned in a non-deterministic order.
* @return a <code>java.util.List</code> of <code>DataFlavor</code> objects into which
* platform-specific data in the specified, platform-specific native can be translated
* @see #encodeJavaMIMEType
* @since 1.4
*/
public synchronized List<DataFlavor> getFlavorsForNative(String nat) {
// Check cache, even for null nat
SoftReference ref = (SoftReference) getFlavorsForNativeCache.get(nat);
if (ref != null) {
ArrayList retval = (ArrayList) ref.get();
if (retval != null) {
return (List) retval.clone();
}
}
LinkedList retval = new LinkedList();
if (nat == null) {
List natives = getNativesForFlavor(null);
HashSet dups = new HashSet(natives.size());
for (Iterator natives_iter = natives.iterator(); natives_iter.hasNext(); ) {
List flavors = getFlavorsForNative((String) natives_iter.next());
for (Iterator flavors_iter = flavors.iterator(); flavors_iter.hasNext(); ) {
Object flavor = flavors_iter.next();
if (dups.add(flavor)) {
retval.add(flavor);
}
}
}
} else {
List flavors = nativeToFlavorLookup(nat);
if (disabledMappingGenerationKeys.contains(nat)) {
return flavors;
}
HashSet dups = new HashSet(flavors.size());
List flavorsAndbaseTypes = nativeToFlavorLookup(nat);
for (Iterator flavorsAndbaseTypes_iter = flavorsAndbaseTypes.iterator();
flavorsAndbaseTypes_iter.hasNext(); ) {
Object value = flavorsAndbaseTypes_iter.next();
if (value instanceof String) {
String baseType = (String) value;
String subType = null;
try {
MimeType mimeType = new MimeType(baseType);
subType = mimeType.getSubType();
} catch (MimeTypeParseException mtpe) {
// Cannot happen, since we checked all mappings
// on load from flavormap.properties.
assert (false);
}
if (DataTransferer.doesSubtypeSupportCharset(subType, null)) {
if (TEXT_PLAIN_BASE_TYPE.equals(baseType) && dups.add(DataFlavor.stringFlavor)) {
retval.add(DataFlavor.stringFlavor);
}
for (int i = 0; i < UNICODE_TEXT_CLASSES.length; i++) {
DataFlavor toAdd = null;
try {
toAdd =
new DataFlavor(baseType + ";charset=Unicode;class=" + UNICODE_TEXT_CLASSES[i]);
} catch (ClassNotFoundException cannotHappen) {
}
if (dups.add(toAdd)) {
retval.add(toAdd);
}
}
for (Iterator charset_iter = DataTransferer.standardEncodings();
charset_iter.hasNext(); ) {
String charset = (String) charset_iter.next();
for (int i = 0; i < ENCODED_TEXT_CLASSES.length; i++) {
DataFlavor toAdd = null;
try {
toAdd =
new DataFlavor(
baseType + ";charset=" + charset + ";class=" + ENCODED_TEXT_CLASSES[i]);
} catch (ClassNotFoundException cannotHappen) {
}
// Check for equality to plainTextFlavor so
// that we can ensure that the exact charset of
// plainTextFlavor, not the canonical charset
// or another equivalent charset with a
// different name, is used.
if (toAdd.equals(DataFlavor.plainTextFlavor)) {
toAdd = DataFlavor.plainTextFlavor;
}
if (dups.add(toAdd)) {
retval.add(toAdd);
}
}
}
if (TEXT_PLAIN_BASE_TYPE.equals(baseType) && dups.add(DataFlavor.plainTextFlavor)) {
retval.add(DataFlavor.plainTextFlavor);
}
} else {
// Non-charset text natives should be treated as
// opaque, 8-bit data in any of its various
// representations.
for (int i = 0; i < ENCODED_TEXT_CLASSES.length; i++) {
DataFlavor toAdd = null;
try {
toAdd = new DataFlavor(baseType + ";class=" + ENCODED_TEXT_CLASSES[i]);
} catch (ClassNotFoundException cannotHappen) {
}
if (dups.add(toAdd)) {
retval.add(toAdd);
}
}
}
} else {
DataFlavor flavor = (DataFlavor) value;
if (dups.add(flavor)) {
retval.add(flavor);
}
}
}
}
ArrayList arrayList = new ArrayList(retval);
getFlavorsForNativeCache.put(nat, new SoftReference(arrayList));
return (List) arrayList.clone();
}
/**
* Copied code from java.util.Properties. Parsing the data ourselves is the only way to handle
* duplicate keys and values.
*/
private void parseAndStoreReader(BufferedReader in) throws IOException {
while (true) {
// Get next line
String line = in.readLine();
if (line == null) {
return;
}
if (line.length() > 0) {
// Continue lines that end in slashes if they are not comments
char firstChar = line.charAt(0);
if (firstChar != '#' && firstChar != '!') {
while (continueLine(line)) {
String nextLine = in.readLine();
if (nextLine == null) {
nextLine = new String("");
}
String loppedLine = line.substring(0, line.length() - 1);
// Advance beyond whitespace on new line
int startIndex = 0;
for (; startIndex < nextLine.length(); startIndex++) {
if (whiteSpaceChars.indexOf(nextLine.charAt(startIndex)) == -1) {
break;
}
}
nextLine = nextLine.substring(startIndex, nextLine.length());
line = new String(loppedLine + nextLine);
}
// Find start of key
int len = line.length();
int keyStart = 0;
for (; keyStart < len; keyStart++) {
if (whiteSpaceChars.indexOf(line.charAt(keyStart)) == -1) {
break;
}
}
// Blank lines are ignored
if (keyStart == len) {
continue;
}
// Find separation between key and value
int separatorIndex = keyStart;
for (; separatorIndex < len; separatorIndex++) {
char currentChar = line.charAt(separatorIndex);
if (currentChar == '\\') {
separatorIndex++;
} else if (keyValueSeparators.indexOf(currentChar) != -1) {
break;
}
}
// Skip over whitespace after key if any
int valueIndex = separatorIndex;
for (; valueIndex < len; valueIndex++) {
if (whiteSpaceChars.indexOf(line.charAt(valueIndex)) == -1) {
break;
}
}
// Skip over one non whitespace key value separators if any
if (valueIndex < len) {
if (strictKeyValueSeparators.indexOf(line.charAt(valueIndex)) != -1) {
valueIndex++;
}
}
// Skip over white space after other separators if any
while (valueIndex < len) {
if (whiteSpaceChars.indexOf(line.charAt(valueIndex)) == -1) {
break;
}
valueIndex++;
}
String key = line.substring(keyStart, separatorIndex);
String value = (separatorIndex < len) ? line.substring(valueIndex, len) : "";
// Convert then store key and value
key = loadConvert(key);
value = loadConvert(value);
try {
MimeType mime = new MimeType(value);
if ("text".equals(mime.getPrimaryType())) {
String charset = mime.getParameter("charset");
if (DataTransferer.doesSubtypeSupportCharset(mime.getSubType(), charset)) {
// We need to store the charset and eoln
// parameters, if any, so that the
// DataTransferer will have this information
// for conversion into the native format.
DataTransferer transferer = DataTransferer.getInstance();
if (transferer != null) {
transferer.registerTextFlavorProperties(
key, charset, mime.getParameter("eoln"), mime.getParameter("terminators"));
}
}
// But don't store any of these parameters in the
// DataFlavor itself for any text natives (even
// non-charset ones). The SystemFlavorMap will
// synthesize the appropriate mappings later.
mime.removeParameter("charset");
mime.removeParameter("class");
mime.removeParameter("eoln");
mime.removeParameter("terminators");
value = mime.toString();
}
} catch (MimeTypeParseException e) {
e.printStackTrace();
continue;
}
DataFlavor flavor;
try {
flavor = new DataFlavor(value);
} catch (Exception e) {
try {
flavor = new DataFlavor(value, (String) null);
} catch (Exception ee) {
ee.printStackTrace();
continue;
}
}
// For text/* flavors, store mappings in separate maps to
// enable dynamic mapping generation at a run-time.
if ("text".equals(flavor.getPrimaryType())) {
store(value, key, getFlavorToNative());
store(key, value, getNativeToFlavor());
} else {
store(flavor, key, getFlavorToNative());
store(key, flavor, getNativeToFlavor());
}
}
}
}
}
