From 67a0e8d70f0caf8b85e0cf2031333236b2a3dcdf Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 24 Jan 2016 14:46:19 +0200
Subject: Add checksum verification

---
 bpkg/checksum | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 bpkg/checksum

(limited to 'bpkg/checksum')

diff --git a/bpkg/checksum b/bpkg/checksum
new file mode 100644
index 0000000..3ef35cc
--- /dev/null
+++ b/bpkg/checksum
@@ -0,0 +1,32 @@
+// file      : bpkg/checksum -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef BPKG_CHECKSUM
+#define BPKG_CHECKSUM
+
+#include <bpkg/types>
+#include <bpkg/utility>
+
+#include <bpkg/common-options>
+
+namespace bpkg
+{
+  // Calculate SHA256 sum of the specified memory buffer in binary mode. Issue
+  // diagnostics and throw failed if anything goes wrong.
+  //
+  string
+  sha256 (const common_options&, const char* buf, size_t n);
+
+  // The same but for a stream (if ifstream, open in binary mode).
+  //
+  string
+  sha256 (const common_options&, istream&);
+
+  // The same but for a file.
+  //
+  string
+  sha256 (const common_options&, const path& file);
+}
+
+#endif // BPKG_CHECKSUM
-- 
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