Add xml:lang support.

src/XMPPConnection.h

@@ -146,6 +146,7 @@
 	OFString *domain, *domainToASCII;
 	XMPPJID *JID;
 	uint16_t port;
+	OFString *language;
 	XMPPMulticastDelegate *delegates;
 	OFMutableDictionary *callbacks;
 	XMPPAuthenticator *authModule;
@@ -170,6 +171,8 @@
 @property (copy) OFString *domain;
 /// \brief The resource to request for the connection
 @property (copy) OFString *resource;
+/// \brief The language to request for the connection
+@property (copy) OFString *language;
 /// \brief A private key file to use for authentication
 @property (copy) OFString *privateKeyFile;
 /// \brief A certificate file to use for authentication
@@ -321,6 +324,8 @@
 - (XMPPJID*)JID;
 - (void)setPort: (uint16_t)port;
 - (uint16_t)port;
+- (void)setLanguage: (OFString*)language;
+- (OFString*)language;
 
 /// \cond internal
 - (void)XMPP_startStream;

src/XMPPConnection.m

@@ -52,6 +52,8 @@
 #import "XMPPXMLElementBuilder.h"
 #import "namespaces.h"
 
+#import <ObjFW/macros.h>
+
 @implementation XMPPConnection
 + connection
 {
@@ -528,6 +530,8 @@
 
 - (void)XMPP_startStream
 {
+	OFString *langString = @"";
+
 	/* Make sure we don't get any old events */
 	[parser setDelegate: nil];
 	[elementBuilder setDelegate: nil];
@@ -545,11 +549,16 @@
 	elementBuilder = [[XMPPXMLElementBuilder alloc] init];
 	[elementBuilder setDelegate: self];
 
+	if (language != nil)
+		langString = [OFString stringWithFormat: @"xml:lang='%@' ",
+							 language];
+
 	[sock writeFormat: @"<?xml version='1.0'?>\n"
 			   @"<stream:stream to='%@' "
 			   @"xmlns='" XMPP_NS_CLIENT @"' "
-			   @"xmlns:stream='" XMPP_NS_STREAM @"' "
-			   @"version='1.0'>", domain];
+			   @"xmlns:stream='" XMPP_NS_STREAM @"' %@"
+			   @"version='1.0'>", domain, langString];
+
 	streamOpen = YES;
 }
 
@@ -1042,6 +1051,16 @@
 	return port;
 }
 
+- (void)setLanguage: (OFString*)language_
+{
+	OF_SETTER(language, language_, YES, YES)
+}
+
+- (OFString*)language
+{
+	OF_GETTER(language, YES)
+}
+
 - (void)addDelegate: (id <XMPPConnectionDelegate>)delegate
 {
 	[delegates addDelegate: delegate];

src/XMPPStanza.h

@@ -35,6 +35,7 @@
 	XMPPJID *to;
 	OFString *type;
 	OFString *ID;
+	OFString *language;
 /// \endcond
 }
 
@@ -47,6 +48,7 @@
 @property (copy) OFString *type;
 /// \brief The value of the stanza's id attribute
 @property (copy) OFString *ID;
+/// \brief The stanza's xml:lang
 #endif
 
 /**
@@ -158,4 +160,6 @@
 - (OFString*)type;
 - (void)setID: (OFString*)ID;
 - (OFString*)ID;
+- (void)setLanguage: (OFString*)language;
+- (OFString*)language;
 @end

src/XMPPStanza.m

@@ -211,7 +211,7 @@
 
 - (void)setID: (OFString*)ID_
 {
-	OFString* old = ID;
+	OFString *old = ID;
 	ID = [ID_ copy];
 	[old release];
 
@@ -219,11 +219,32 @@
 
 	if (ID_ != nil)
 		[self addAttributeWithName: @"id"
-			       stringValue: ID];
+			       stringValue: ID_];
 }
 
 - (OFString*)ID
 {
 	return [[ID copy] autorelease];
 }
+
+- (void)setLanguage: (OFString*)language_
+{
+	OFString *old = language;
+	language = [language_ copy];
+	[old release];
+
+	[self removeAttributeForName: @"lang"
+			   namespace: @"http://www.w3.org/XML/1998/namespace"];
+
+	if (language_ != nil)
+		[self addAttributeWithName: @"lang"
+				 namespace: @"http://www.w3.org/XML/1998/"
+					    @"namespace"
+			       stringValue: language_];
+}
+
+- (OFString*)language
+{
+	return [[language copy] autorelease];
+}
 @end