public static HyphenationTreeCache GetHyphenationTreeCache()
{
if (hTreeCache == null)
{
hTreeCache = new HyphenationTreeCache();
}
return(hTreeCache);
}
/// <summary>Returns a hyphenation tree for a given language and country.</summary>
/// <remarks>Returns a hyphenation tree for a given language and country. The hyphenation trees are cached.</remarks>
/// <param name="lang">the language</param>
/// <param name="country">the country (may be null or "none")</param>
/// <param name="hyphPathNames">the map with user-configured hyphenation pattern file names</param>
/// <returns>the hyphenation tree</returns>
public static HyphenationTree GetHyphenationTree2(String lang, String country, IDictionary <String, String>
hyphPathNames)
{
String llccKey = HyphenationTreeCache.ConstructLlccKey(lang, country);
HyphenationTreeCache cache = GetHyphenationTreeCache();
HyphenationTree hTree;
// first try to find it in the cache
hTree = GetHyphenationTreeCache().GetHyphenationTree(lang, country);
if (hTree != null)
{
return(hTree);
}
String key = HyphenationTreeCache.ConstructUserKey(lang, country, hyphPathNames);
if (key == null)
{
key = llccKey;
}
if (additionalHyphenationFileDirectories != null)
{
foreach (String dir in additionalHyphenationFileDirectories)
{
hTree = GetHyphenationTree(dir, key);
if (hTree != null)
{
break;
}
}
}
if (hTree == null)
{
// get from the default directory
Stream defaultHyphenationResourceStream = ResourceUtil.GetResourceStream(HyphenationConstants.HYPHENATION_DEFAULT_RESOURCE
+ key + ".xml");
if (defaultHyphenationResourceStream != null)
{
hTree = GetHyphenationTree(defaultHyphenationResourceStream, key);
}
}
// put it into the pattern cache
if (hTree != null)
{
cache.Cache(llccKey, hTree);
}
return(hTree);
}
/// <summary>
/// Returns a hyphenation tree for a given language and country,
/// with fallback from (lang,country) to (lang).
/// </summary>
/// <remarks>
/// Returns a hyphenation tree for a given language and country,
/// with fallback from (lang,country) to (lang).
/// The hyphenation trees are cached.
/// </remarks>
/// <param name="lang">the language</param>
/// <param name="country">the country (may be null or "none")</param>
/// <param name="hyphPathNames">the map with user-configured hyphenation pattern file names</param>
/// <returns>the hyphenation tree</returns>
public static HyphenationTree GetHyphenationTree(String lang, String country, IDictionary <String, String>
hyphPathNames)
{
String llccKey = HyphenationTreeCache.ConstructLlccKey(lang, country);
HyphenationTreeCache cache = GetHyphenationTreeCache();
// If this hyphenation tree has been registered as missing, return immediately
if (cache.IsMissing(llccKey))
{
return(null);
}
HyphenationTree hTree = GetHyphenationTree2(lang, country, hyphPathNames);
// fallback to lang only
if (hTree == null && country != null && !country.Equals("none"))
{
String llKey = HyphenationTreeCache.ConstructLlccKey(lang, null);
if (!cache.IsMissing(llKey))
{
hTree = GetHyphenationTree2(lang, null, hyphPathNames);
if (hTree != null && log.IsDebugEnabled)
{
log.Debug("Couldn't find hyphenation pattern " + "for lang=\"" + lang + "\",country=\"" + country + "\"."
+ " Using general language pattern " + "for lang=\"" + lang + "\" instead.");
}
if (hTree == null)
{
// no fallback; register as missing
cache.NoteMissing(llKey);
}
else
{
// also register for (lang,country)
cache.Cache(llccKey, hTree);
}
}
}
if (hTree == null)
{
// (lang,country) and (lang) tried; register as missing
cache.NoteMissing(llccKey);
log.Error("Couldn't find hyphenation pattern " + "for lang=\"" + lang + "\"" + (country != null && !country
.Equals("none") ? ",country=\"" + country + "\"" : "") + ".");
}
return(hTree);
}
/// <summary>Clears the default hyphenation tree cache.</summary>
/// <remarks>Clears the default hyphenation tree cache. This method can be used if the underlying data files are changed at runtime.
/// </remarks>
public static void ClearHyphenationTreeCache()
{
lock (staticLock) {
hTreeCache = new HyphenationTreeCache();
}
}
