private void writeFcInfo() {
Properties props = new Properties();
props.setProperty("version", fileVersion);
X11FontManager fm = (X11FontManager) fontManager;
FontConfigManager fcm = fm.getFontConfigManager();
FontConfigInfo fcInfo = fcm.getFontConfigInfo();
props.setProperty("fcversion", Integer.toString(fcInfo.fcVersion));
if (fcInfo.cacheDirs != null) {
for (int i = 0; i < fcInfo.cacheDirs.length; i++) {
if (fcInfo.cacheDirs[i] != null) {
props.setProperty("cachedir." + i, fcInfo.cacheDirs[i]);
}
}
}
for (int i = 0; i < fcCompFonts.length; i++) {
FcCompFont fci = fcCompFonts[i];
String styleKey = fci.jdkName + "." + fci.style;
props.setProperty(styleKey + ".length", Integer.toString(fci.allFonts.length));
for (int j = 0; j < fci.allFonts.length; j++) {
props.setProperty(styleKey + "." + j + ".family", fci.allFonts[j].familyName);
props.setProperty(styleKey + "." + j + ".file", fci.allFonts[j].fontFile);
}
}
try {
/* This writes into a temp file then renames when done.
* Since the rename is an atomic action within the same
* directory no client will ever see a partially written file.
*/
File fcInfoFile = getFcInfoFile();
File dir = fcInfoFile.getParentFile();
dir.mkdirs();
File tempFile = Files.createTempFile(dir.toPath(), "fcinfo", null).toFile();
FileOutputStream fos = new FileOutputStream(tempFile);
props.store(fos, "JDK Font Configuration Generated File: *Do Not Edit*");
fos.close();
boolean renamed = tempFile.renameTo(fcInfoFile);
if (!renamed && FontUtilities.debugFonts()) {
System.out.println("rename failed");
warning("Failed renaming file to " + getFcInfoFile());
}
} catch (Exception e) {
if (FontUtilities.debugFonts()) {
warning("IOException writing to " + getFcInfoFile());
}
}
}
@Override
public synchronized boolean init() {
if (fcCompFonts != null) {
return true;
}
setFontConfiguration();
readFcInfo();
X11FontManager fm = (X11FontManager) fontManager;
FontConfigManager fcm = fm.getFontConfigManager();
if (fcCompFonts == null) {
fcCompFonts = fcm.loadFontConfig();
if (fcCompFonts != null) {
try {
writeFcInfo();
} catch (Exception e) {
if (FontUtilities.debugFonts()) {
warning("Exception writing fcInfo " + e);
}
}
} else if (FontUtilities.debugFonts()) {
warning("Failed to get info from libfontconfig");
}
} else {
fcm.populateFontConfig(fcCompFonts);
}
if (fcCompFonts == null) {
return false; // couldn't load fontconfig.
}
// NB already in a privileged block from SGE
String javaHome = System.getProperty("java.home");
if (javaHome == null) {
throw new Error("java.home property not set");
}
String javaLib = javaHome + File.separator + "lib";
getInstalledFallbackFonts(javaLib);
return true;
}
/** Sets the OS name and version from environment information. */
@Override
protected void setOsNameAndVersion() {
super.setOsNameAndVersion();
if (!osName.equals("Linux")) {
return;
}
try {
File f;
if ((f = new File("/etc/lsb-release")).canRead()) {
/* Ubuntu and (perhaps others) use only lsb-release.
* Syntax and encoding is compatible with java properties.
* For Ubuntu the ID is "Ubuntu".
*/
Properties props = new Properties();
props.load(new FileInputStream(f));
osName = props.getProperty("DISTRIB_ID");
osVersion = props.getProperty("DISTRIB_RELEASE");
} else if ((f = new File("/etc/redhat-release")).canRead()) {
osName = "RedHat";
osVersion = getVersionString(f);
} else if ((f = new File("/etc/SuSE-release")).canRead()) {
osName = "SuSE";
osVersion = getVersionString(f);
} else if ((f = new File("/etc/turbolinux-release")).canRead()) {
osName = "Turbo";
osVersion = getVersionString(f);
} else if ((f = new File("/etc/fedora-release")).canRead()) {
osName = "Fedora";
osVersion = getVersionString(f);
}
} catch (Exception e) {
if (FontUtilities.debugFonts()) {
warning("Exception identifying Linux distro.");
}
}
}
/* We want to be able to use this cache instead of invoking
* fontconfig except when we can detect the system cache has changed.
* But there doesn't seem to be a way to find the location of
* the system cache.
*/
private void readFcInfo() {
File fcFile = getFcInfoFile();
if (!fcFile.exists()) {
return;
}
Properties props = new Properties();
X11FontManager fm = (X11FontManager) fontManager;
FontConfigManager fcm = fm.getFontConfigManager();
try {
FileInputStream fis = new FileInputStream(fcFile);
props.load(fis);
fis.close();
} catch (IOException e) {
if (FontUtilities.debugFonts()) {
warning("IOException reading from " + fcFile.toString());
}
return;
}
String version = (String) props.get("version");
if (version == null || !version.equals(fileVersion)) {
return;
}
// If there's a new, different fontconfig installed on the
// system, we invalidate our fontconfig file.
String fcVersionStr = (String) props.get("fcversion");
if (fcVersionStr != null) {
int fcVersion;
try {
fcVersion = Integer.parseInt(fcVersionStr);
if (fcVersion != 0 && fcVersion != fcm.getFontConfigVersion()) {
return;
}
} catch (Exception e) {
if (FontUtilities.debugFonts()) {
warning("Exception parsing version " + fcVersionStr);
}
return;
}
}
// If we can locate the fontconfig cache dirs, then compare the
// time stamp of those with our properties file. If we are out
// of date then re-generate.
long lastModified = fcFile.lastModified();
int cacheDirIndex = 0;
while (cacheDirIndex < 4) { // should never be more than 2 anyway.
String dir = (String) props.get("cachedir." + cacheDirIndex);
if (dir == null) {
break;
}
File dirFile = new File(dir);
if (dirFile.exists() && dirFile.lastModified() > lastModified) {
return;
}
cacheDirIndex++;
}
String[] names = {"sansserif", "serif", "monospaced"};
String[] fcnames = {"sans", "serif", "monospace"};
int namesLen = names.length;
int numStyles = 4;
FcCompFont[] fci = new FcCompFont[namesLen * numStyles];
try {
for (int i = 0; i < namesLen; i++) {
for (int s = 0; s < numStyles; s++) {
int index = i * numStyles + s;
fci[index] = new FcCompFont();
String key = names[i] + "." + s;
fci[index].jdkName = names[i];
fci[index].fcFamily = fcnames[i];
fci[index].style = s;
String lenStr = (String) props.get(key + ".length");
int nfonts = Integer.parseInt(lenStr);
if (nfonts <= 0) {
return; // bad file
}
fci[index].allFonts = new FontConfigFont[nfonts];
for (int f = 0; f < nfonts; f++) {
fci[index].allFonts[f] = new FontConfigFont();
String fkey = key + "." + f + ".family";
String family = (String) props.get(fkey);
fci[index].allFonts[f].familyName = family;
fkey = key + "." + f + ".file";
String file = (String) props.get(fkey);
if (file == null) {
return; // bad file
}
fci[index].allFonts[f].fontFile = file;
}
fci[index].firstFont = fci[index].allFonts[0];
}
}
fcCompFonts = fci;
} catch (Throwable t) {
if (FontUtilities.debugFonts()) {
warning(t.toString());
}
}
}
