/**
* Check from the request ContentType if this request is a Multipart request.
*
* @return an array of String if multipartDataBoundary exists with the multipartDataBoundary as
* first element, charset if any as second (missing if not set), else null
*/
protected static String[] getMultipartDataBoundary(String contentType) {
// Check if Post using "multipart/form-data; boundary=--89421926422648 [; charset=xxx]"
String[] headerContentType = splitHeaderContentType(contentType);
if (headerContentType[0].toLowerCase().startsWith(HttpHeaders.Values.MULTIPART_FORM_DATA)) {
int mrank;
int crank;
if (headerContentType[1].toLowerCase().startsWith(HttpHeaders.Values.BOUNDARY)) {
mrank = 1;
crank = 2;
} else if (headerContentType[2].toLowerCase().startsWith(HttpHeaders.Values.BOUNDARY)) {
mrank = 2;
crank = 1;
} else {
return null;
}
String boundary = StringUtil.substringAfter(headerContentType[mrank], '=');
if (boundary == null) {
throw new ErrorDataDecoderException("Needs a boundary value");
}
if (boundary.charAt(0) == '"') {
String bound = boundary.trim();
int index = bound.length() - 1;
if (bound.charAt(index) == '"') {
boundary = bound.substring(1, index);
}
}
if (headerContentType[crank].toLowerCase().startsWith(HttpHeaders.Values.CHARSET)) {
String charset = StringUtil.substringAfter(headerContentType[crank], '=');
if (charset != null) {
return new String[] {"--" + boundary, charset};
}
}
return new String[] {"--" + boundary};
}
return null;
}
@Override
public String toString() {
return StringUtil.simpleClassName(this) + "(name: " + name() + ", size: " + size() + ')';
}
