Add checksum verification

1 files changed, 32 insertions, 0 deletions

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