/** Autodetect fonts available on the system. */
public static final void discoverPhysicalFonts() throws Exception {
// Currently we use FOP - inspired by org.apache.fop.render.PrintRendererConfigurator
// iText also has a font discoverer (which we could use
// instead, but don't, since in docx4j we're settled on
// PDF output via XSL FO)
FontFileFinder fontFileFinder = new FontFileFinder();
// Automagically finds a list of font files on local system
// based on os.name
List fontFileList = fontFileFinder.find();
if (regex == null) {
for (Iterator iter = fontFileList.iterator(); iter.hasNext(); ) {
URL fontUrl = getURL(iter.next());
// parse font to ascertain font info
addPhysicalFont(fontUrl);
}
} else {
Pattern pattern = Pattern.compile(regex);
for (Iterator iter = fontFileList.iterator(); iter.hasNext(); ) {
URL fontUrl = getURL(iter.next());
// parse font to ascertain font info
if (pattern.matcher(fontUrl.toString()).matches()) {
addPhysicalFont(fontUrl);
} else {
// log.debug("Ignoring " + fontUrl.toString() );
}
}
}
// Add fonts from our Temporary Embedded Fonts dir
fontFileList = fontFileFinder.find(ObfuscatedFontPart.getTemporaryEmbeddedFontsDir());
for (Iterator iter = fontFileList.iterator(); iter.hasNext(); ) {
URL fontUrl = getURL(iter.next());
addPhysicalFont(fontUrl);
}
fontCache.save();
}
/**
* Add a physical font's EmbedFontInfo object.
*
* @param fontUrl eg new java.net.URL("file:" + path)
*/
public static void addPhysicalFont(URL fontUrl) {
addPhysicalFont(null, fontUrl);
}
/**
* deObfuscate this font, and save it using fontName
*
* @param fontName - the name to save the font as. We could read the font name from the
* deObfuscated data, but FontLoader can't readily load from a byte array.
* @param fontKey
*/
public void deObfuscate(String fontName, String fontKey) {
byte[] fontData = null;
bb.clear();
fontData = new byte[bb.capacity()];
bb.get(fontData, 0, fontData.length);
log.debug("bytes: " + fontData.length);
log.info("deObfuscating with fontkey: " + fontKey);
// INPUT: {1DF903E3-2F14-4575-8028-881FEBABF2AB}
// See http://openiso.org/Ecma/376/Part4/2.8.1
// for how to do this.
// First, strip {,}
String tmpString = fontKey.substring(1, fontKey.length() - 1);
log.debug(tmpString);
// Now strip -
String guidString = tmpString.replace(target, replacement);
log.debug(guidString);
// Make the font key into a byte array
byte[] guidByteArray = new byte[16];
for (int i = 0; i < guidByteArray.length; i++) {
guidByteArray[i] = fromHexString(guidString.substring(i * 2, (i * 2) + 2));
}
// XOR the reverse of the guidByteArray with
// the first and second 16 bytes
for (int j = 0; j < 2; j++) {
for (int i = 0; i < 16; i++) {
fontData[(j * 16) + i] ^= guidByteArray[15 - i]; // Reverse happens here
}
}
// Save the result
java.io.File f = new File(tmpFontDir, fontName + ".ttf");
String path = null;
java.io.FileOutputStream fos = null;
try {
path = f.getCanonicalPath();
fos = new java.io.FileOutputStream(f);
fos.write(fontData);
log.debug("wrote: " + fontData.length);
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
log.info("Done!");
// Save to "Temporary Font Files" directory.
FontResolver fontResolver = FontSetup.createMinimalFontResolver();
if (log.isDebugEnabled()) {
CustomFont customFont = null;
try {
log.debug("Loading from: " + path);
String subFontName = null; // TODO set this if its a TTC
boolean embedded = true;
boolean useKerning = true;
customFont =
FontLoader.loadFont(
"file:" + path, subFontName, embedded, EncodingMode.AUTO, useKerning, fontResolver);
} catch (Exception e) {
e.printStackTrace();
}
if (customFont != null) {
log.info("Successfully reloaded " + customFont.getFontName());
if (customFont.isEmbeddable()) {
log.debug("confirmed embeddable");
} else {
// Sanity check
log.error("this embedded font claims it is not embeddable!");
}
}
}
// Add this font to our known physical fonts
try {
org.docx4j.fonts.PhysicalFonts.addPhysicalFont(new java.net.URL("file:" + path));
// This needs to be done before populateFontMappings,
// otherwise this font will be ignored, and references
// to it mapped to some substitute font!
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}