public static Map<String, String> getCharsetHeaderCharsets(String header) {
if (header == null) return null;
int semicolonIndex = header.indexOf(";");
final String charsets;
if (semicolonIndex == -1) charsets = header.trim();
else charsets = header.substring(0, semicolonIndex).trim();
final StringTokenizer st = new StringTokenizer(charsets, ",");
final Map<String, String> charsetsMap = new HashMap<String, String>();
while (st.hasMoreTokens()) {
charsetsMap.put(st.nextToken(), "");
}
return charsetsMap;
}
public static Map<String, String> getContentTypeParameters(String contentType) {
if (contentType == null) return null;
// Check whether there may be parameters
final int semicolonIndex = contentType.indexOf(";");
if (semicolonIndex == -1) return null;
// Tokenize
final StringTokenizer st = new StringTokenizer(contentType, ";");
if (!st.hasMoreTokens())
return null; // should not happen as there should be at least the content type
st.nextToken();
// No parameters
if (!st.hasMoreTokens()) return null;
// Parse parameters
final Map<String, String> parameters = new HashMap<String, String>();
while (st.hasMoreTokens()) {
final String parameter = st.nextToken().trim();
final int equalIndex = parameter.indexOf('=');
if (equalIndex == -1) continue;
final String name = parameter.substring(0, equalIndex).trim();
final String value = parameter.substring(equalIndex + 1).trim();
parameters.put(name, value);
}
return parameters;
}