Add support for UUID generation

1 files changed, 43 insertions, 0 deletions

diff --git a/libbutl/uuid-io.cxx b/libbutl/uuid-io.cxx
new file mode 100644
index 0000000..7eed134
--- /dev/null
+++ b/libbutl/uuid-io.cxx
@@ -0,0 +1,43 @@
+// file      : libbutl/uuid-io.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2018 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <libbutl/uuid-io.hxx>
+
+#include <ostream>
+#include <istream>
+#include <stdexcept> // invalid_argument
+
+using namespace std;
+
+namespace butl
+{
+  ostream&
+  operator<< (ostream& os, const uuid& u)
+  {
+    return os << u.c_string ().data ();
+  }
+
+  istream&
+  operator>> (istream& is, uuid& u)
+  {
+    u = uuid ();
+
+    char s[37];
+    if (is.read (s, 36))
+    {
+      s[36] ='\0';
+
+      try
+      {
+        u = uuid (s);
+      }
+      catch (const invalid_argument&)
+      {
+        is.setstate (istream::failbit);
+      }
+    }
+
+    return is;
+  }
+}