/**
* Returns the charset explicitly set by the user for the given resource, or <code>null</code>. If
* no setting exists for the given resource and <code>recurse</code> is <code>true</code>, every
* parent up to the workspace root will be checked until a charset setting can be found.
*
* @param resourcePath the path for the resource
* @param recurse whether the parent should be queried
* @return the charset setting for the given resource
*/
public String getCharsetFor(IPath resourcePath, boolean recurse) {
Assert.isLegal(resourcePath.segmentCount() >= 1);
IProject project = workspace.getRoot().getProject(resourcePath.segment(0));
Preferences prefs = getPreferences(project, false, false);
Preferences derivedPrefs = getPreferences(project, false, true);
if (prefs == null && derivedPrefs == null)
// no preferences found - for performance reasons, short-circuit
// lookup by falling back to workspace's default setting
return recurse ? ResourcesPlugin.getEncoding() : null;
return internalGetCharsetFor(prefs, derivedPrefs, resourcePath, recurse);
}
private String internalGetCharsetFor(
Preferences prefs, Preferences derivedPrefs, IPath resourcePath, boolean recurse) {
String charset = null;
// try to find the encoding in regular and then derived preferences
if (prefs != null) charset = prefs.get(getKeyFor(resourcePath), null);
// derivedPrefs may be not null, only if #isDerivedEncodingStoredSeparately returns true
// so the explicit check against #isDerivedEncodingStoredSeparately is not required
if (charset == null && derivedPrefs != null)
charset = derivedPrefs.get(getKeyFor(resourcePath), null);
if (!recurse) return charset;
while (charset == null && resourcePath.segmentCount() > 1) {
resourcePath = resourcePath.removeLastSegments(1);
// try to find the encoding in regular and then derived preferences
if (prefs != null) charset = prefs.get(getKeyFor(resourcePath), null);
if (charset == null && derivedPrefs != null)
charset = derivedPrefs.get(getKeyFor(resourcePath), null);
}
// ensure we default to the workspace encoding if none is found
return charset == null ? ResourcesPlugin.getEncoding() : charset;
}
