Make use of butl::sha256 class

1 files changed, 12 insertions, 6 deletions

diff --git a/bpkg/checksum.hxx b/bpkg/checksum.hxx
index ec5a82e..2342250 100644
--- a/bpkg/checksum.hxx
+++ b/bpkg/checksum.hxx
@@ -5,6 +5,8 @@
 #ifndef BPKG_CHECKSUM_HXX
 #define BPKG_CHECKSUM_HXX
 
+#include <libbutl/sha256.mxx>
+
 #include <bpkg/types.hxx>
 #include <bpkg/utility.hxx>
 
@@ -12,18 +14,22 @@
 
 namespace bpkg
 {
-  // Calculate SHA256 sum of the specified memory buffer in binary mode. Issue
-  // diagnostics and throw failed if anything goes wrong.
+  // Calculate SHA256 sum of the specified memory buffer in binary mode.
   //
-  string
-  sha256 (const common_options&, const char* buf, size_t n);
+  inline string
+  sha256 (const char* buf, size_t n) {return butl::sha256 (buf, n).string ();}
 
   // The same but for a stream (if ifdstream, open in binary mode).
   //
   string
-  sha256 (const common_options&, istream&);
+  sha256 (istream&);
 
-  // The same but for a file.
+  // The same but for a file. Issue diagnostics and throw failed if anything
+  // goes wrong.
+  //
+  // Note that unlike the other overloads, this function runs the sha256
+  // program underneath. The reason for this is that the program can be
+  // optimized for the platform.
   //
   string
   sha256 (const common_options&, const path& file);