Replace many calls to sprintf with QUtil::hex_encode

Add QUtil::hex_encode to encode binary data has a hexadecimal string,
and use it in place of sprintf where possible.

1 files changed, 1 insertions, 10 deletions

diff --git a/libqpdf/MD5.cc b/libqpdf/MD5.cc
index 70be696d..57bcc45f 100644
--- a/libqpdf/MD5.cc
+++ b/libqpdf/MD5.cc
@@ -386,16 +386,7 @@ void MD5::print()
 std::string MD5::unparse()
 {
     final();
-
-    char result[33];
-    char* p = result;
-    unsigned int i;
-    for (i = 0; i < 16; ++i)
-    {
-	sprintf(p, "%02x", digest_val[i]);
-	p += 2;
-    }
-    return result;
+    return QUtil::hex_encode(std::string((char*)digest_val, 16));
 }
 
 std::string