shithub: blake2

Info  •  Files  •  Log  •  Branches

b2sum: Support reading from stdin

--- a/b2sum/b2sum.c

+++ b/b2sum/b2sum.c

@@ -232,6 +232,7 @@

 {

   fprintf( stderr, "Usage: %s [-a HASH] [FILE]...\n", argv[0] );

   fprintf( stderr, "\tHASH in blake2b blake2s blake2bp blake2sp\n" );

+  fprintf( stderr, "\tWith no FILE, or when FILE is -, read standard input.\n" );

   exit( 111 );

 }

@@ -281,10 +282,16 @@

     }

   }

+  if( optind == argc )

+    argv[argc++] = (char *) "-";

+

   for( int i = optind; i < argc; ++i )

   {

     FILE *f = NULL;

-    f = fopen( argv[i], "rb" );

+    if( argv[i][0] == '-' && argv[i][1] == '\0' )

+      f = stdin;

+    else

+      f = fopen( argv[i], "rb" );

     if( !f )

     {

@@ -303,7 +310,7 @@

     printf( " %s\n", argv[i] );

 end1:

-    fclose( f );

+    if( f != stdin ) fclose( f );

 end0: ;

   }

-- 

⑨