From 40b3f64b55f98e03b3173541b8d94cd924099223 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <e.dolstra@tudelft.nl>
Date: Thu, 30 Nov 2006 19:19:59 +0000
Subject: * Skeleton of the privileged worker program. * Some refactoring: put
 the NAR archive integer/string serialisation   code in a separate file so it
 can be reused by the worker protocol   implementation.

---
 src/libutil/serialise.hh | 71 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 src/libutil/serialise.hh

(limited to 'src/libutil/serialise.hh')

diff --git a/src/libutil/serialise.hh b/src/libutil/serialise.hh
new file mode 100644
index 0000000000..459a693ee8
--- /dev/null
+++ b/src/libutil/serialise.hh
@@ -0,0 +1,71 @@
+#ifndef __SERIALISE_H
+#define __SERIALISE_H
+
+#include "types.hh"
+
+
+namespace nix {
+
+
+/* Abstract destination of binary data. */
+struct Sink 
+{
+    virtual ~Sink() { }
+    virtual void operator () (const unsigned char * data, unsigned int len) = 0;
+};
+
+
+/* Abstract source of binary data. */
+struct Source
+{
+    virtual ~Source() { }
+    
+    /* The callee should store exactly *len bytes in the buffer
+       pointed to by data.  It should block if that much data is not
+       yet available, or throw an error if it is not going to be
+       available. */
+    virtual void operator () (unsigned char * data, unsigned int len) = 0;
+};
+
+
+/* A sink that writes data to a file descriptor. */
+struct FdSink : Sink
+{
+    int fd;
+
+    FdSink(int fd) 
+    {
+        this->fd = fd;
+    }
+    
+    void operator () (const unsigned char * data, unsigned int len);
+};
+
+
+/* A source that reads data from a file descriptor. */
+struct FdSource : Source
+{
+    int fd;
+
+    FdSource(int fd) 
+    {
+        this->fd = fd;
+    }
+    
+    void operator () (unsigned char * data, unsigned int len);
+};
+
+
+void writePadding(unsigned int len, Sink & sink);
+void writeInt(unsigned int n, Sink & sink);
+void writeString(const string & s, Sink & sink);
+
+void readPadding(unsigned int len, Source & source);
+unsigned int readInt(Source & source);
+string readString(Source & source);
+
+ 
+}
+
+
+#endif /* !__SERIALISE_H */
-- 
cgit 1.4.1