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Diffstat (limited to 'libbutl/sha256.mxx')
| -rw-r--r-- | libbutl/sha256.mxx | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libbutl/sha256.mxx b/libbutl/sha256.mxx index fca8b91..2bb58b3 100644 --- a/libbutl/sha256.mxx +++ b/libbutl/sha256.mxx @@ -108,6 +108,11 @@ LIBBUTL_MODEXPORT namespace butl explicit sha256 (ifdstream& i): sha256 () {append (i);} + // Check if any data has been hashed. + // + bool + empty () const {return empty_;} + // Extract result. // // It can be obtained as either a 32-byte binary digest or as a 64- @@ -143,6 +148,7 @@ LIBBUTL_MODEXPORT namespace butl mutable digest_type bin_; mutable bool done_; + bool empty_; }; // Convert a SHA256 string representation (64 hex digits) to the fingerprint |