1 files changed, 43 insertions, 0 deletions
diff --git a/libqpdf/Pl_MD5.cc b/libqpdf/Pl_MD5.cc
new file mode 100644
index 00000000..0a2711b8
--- /dev/null
+++ b/libqpdf/Pl_MD5.cc
@@ -0,0 +1,43 @@
+
+#include <qpdf/Pl_MD5.hh>
+
+#include <qpdf/QEXC.hh>
+
+Pl_MD5::Pl_MD5(char const* identifier, Pipeline* next) :
+    Pipeline(identifier, next),
+    in_progress(false)
+{
+}
+
+Pl_MD5::~Pl_MD5()
+{
+}
+
+void
+Pl_MD5::write(unsigned char* buf, int len)
+{
+    if (! this->in_progress)
+    {
+	this->md5.reset();
+	this->in_progress = true;
+    }
+    this->md5.encodeDataIncrementally((char*) buf, len);
+    this->getNext()->write(buf, len);
+}
+
+void
+Pl_MD5::finish()
+{
+    this->getNext()->finish();
+    this->in_progress = false;
+}
+
+std::string
+Pl_MD5::getHexDigest()
+{
+    if (this->in_progress)
+    {
+	throw QEXC::General("digest requested for in-progress MD5 Pipeline");
+    }
+    return this->md5.unparse();
+}