* Added BString version of LinkReceiver::ReadString().

* adopted this method for ServerLink as well.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14750 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/app/AppServerLink.h

@@ -17,8 +17,8 @@ namespace BPrivate {
 
 class AppServerLink : public ServerLink {
 	public:
-		AppServerLink(void);
-		~AppServerLink(void);
+		AppServerLink();
+		~AppServerLink();
 };
 
 }	// namespace BPrivate

headers/private/app/LinkReceiver.h

@@ -5,12 +5,16 @@
  * Authors:
  *		DarkWyrm <[email protected]>
  *		Pahtz <[email protected]>
+ *		Axel Dörfler, [email protected]
  */
 #ifndef _LINK_RECEIVER_H
 #define _LINK_RECEIVER_H
 
+
 #include <OS.h>
 
+class BString;
+
 
 namespace BPrivate {
 
@@ -28,6 +32,7 @@ class LinkReceiver {
 
 		virtual status_t Read(void *data, ssize_t size);
 		status_t ReadString(char **string);
+		status_t ReadString(BString& string);
 		status_t ReadString(char *buffer, size_t bufferSize);
 		template <class Type> status_t Read(Type *data)
 		{

headers/private/app/ServerLink.h

@@ -15,6 +15,8 @@
 #include <LinkReceiver.h>
 #include <LinkSender.h>
 
+class BString;
+
 
 /*
  * Error checking rules: (for if you don't want to check every return code)
@@ -58,6 +60,7 @@ class ServerLink {
 		bool NeedsReply() const;
 		status_t Read(void *data, ssize_t size);
 		status_t ReadString(char *buffer, size_t bufferSize);
+		status_t ReadString(BString& string);
 		status_t ReadString(char **string);
 		status_t ReadRegion(BRegion *region);
 		status_t ReadShape(BShape *shape);
@@ -169,6 +172,12 @@ ServerLink::ReadString(char *buffer, size_t bufferSize)
 	return fReceiver->ReadString(buffer, bufferSize);
 }
 
+inline status_t
+ServerLink::ReadString(BString& string)
+{
+	return fReceiver->ReadString(string);
+}
+
 inline status_t
 ServerLink::ReadString(char **string)
 {

src/kits/app/LinkReceiver.cpp

@@ -15,6 +15,7 @@
 
 #include <ServerProtocol.h>
 #include <LinkReceiver.h>
+#include <String.h>
 
 #include "link_message.h"
 
@@ -296,6 +297,49 @@ LinkReceiver::ReadString(char **_string)
 }
 
 
+status_t
+LinkReceiver::ReadString(BString &string)
+{
+	int32 length = 0;
+	status_t status;
+
+	status = Read<int32>(&length);
+	if (status < B_OK)
+		return status;
+
+	if (length < 0) {
+		status = B_ERROR;
+		goto err;
+	}
+
+	if (length > 0) {
+		char* buffer = string.LockBuffer(length + 1);
+		if (buffer == NULL) {
+			status = B_NO_MEMORY;
+			goto err;
+		}
+
+		status = Read(buffer, length);
+		if (status < B_OK) {
+			string.UnlockBuffer();
+			goto err;
+		}
+
+		// make sure the string is null terminated
+		buffer[length] = '\0';
+		string.UnlockBuffer(length);
+	} else
+		string = "";
+
+	return B_OK;
+
+err:
+	fRecvPosition -= sizeof(int32);
+		// rewind the transaction
+	return status;
+}
+
+
 status_t
 LinkReceiver::ReadString(char *buffer, size_t bufferLength)
 {