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authorEelco Dolstra <edolstra@gmail.com>2017-02-07T18·21+0100
committerEelco Dolstra <edolstra@gmail.com>2017-02-07T18·29+0100
commitddb5577f2eb158279ee40219de409dcf1230aacc (patch)
treebbfb604aba163272c6a66eb665afe628dca4e706 /src/libutil
parentce4d8e3ef83505560db787876beb30d20ca6faf2 (diff)
Move SavingSourceAdapter to serialise.hh
Diffstat (limited to 'src/libutil')
-rw-r--r--src/libutil/serialise.hh15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/libutil/serialise.hh b/src/libutil/serialise.hh
index f12f02543bc0..5646d08c1314 100644
--- a/src/libutil/serialise.hh
+++ b/src/libutil/serialise.hh
@@ -139,6 +139,21 @@ struct StringSource : Source
 };
 
 
+/* Adapter class of a Source that saves all data read to `s'. */
+struct SavingSourceAdapter : Source
+{
+    Source & orig;
+    string s;
+    SavingSourceAdapter(Source & orig) : orig(orig) { }
+    size_t read(unsigned char * data, size_t len)
+    {
+        size_t n = orig.read(data, len);
+        s.append((const char *) data, n);
+        return n;
+    }
+};
+
+
 void writePadding(size_t len, Sink & sink);
 void writeString(const unsigned char * buf, size_t len, Sink & sink);