tests: add printxval function to libtests

* tests/tests.h (printxval): New prototype.
* tests/printxval.c: New file.
* tests/Makefile.am  (libtests_a_SOURCES): Add it.

diff --git a/tests/Makefile.am b/tests/Makefile.am
index d644a4747aedfdeef893b67499067171dce221c8..4846d1329b3d6aa203e0e2ce20121a1b850bee57 100644 (file)
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -50,6 +50,7 @@ libtests_a_SOURCES = \
        overflowuid.c \
        print_quoted_string.c \
        printflags.c \
+       printxval.c \
        tail_alloc.c \
        tests.h \
        tprintf.c \

diff --git a/tests/printxval.c b/tests/printxval.c
new file mode 100644 (file)
index 0000000..4fb61c8
--- /dev/null
+++ b/tests/printxval.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 1991, 1992 Paul Kranenburg <pk@cs.few.eur.nl>
+ * Copyright (c) 1993 Branko Lankester <branko@hacktic.nl>
+ * Copyright (c) 1993, 1994, 1995, 1996 Rick Sladkey <jrs@world.std.com>
+ * Copyright (c) 1996-1999 Wichert Akkerman <wichert@cistron.nl>
+ * Copyright (c) 2005-2016 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "tests.h"
+#include "xlat.h"
+#include <stdio.h>
+
+int
+printxval(const struct xlat *xlat, unsigned long long val,
+         const char *const dflt)
+{
+       for (; xlat->str; xlat++) {
+               if (xlat->val == val) {
+                       fputs(xlat->str, stdout);
+                       return 1;
+               }
+       }
+
+       printf("%#llx", val);
+       if (dflt)
+               printf(" /* %s */", dflt);
+       return 0;
+}

diff --git a/tests/tests.h b/tests/tests.h
index 5604efc34ca52313e08834ce2e141767619ef098..8c466bfd4435a51261c5a9abb82964c530921ef9 100644 (file)
--- a/tests/tests.h
+++ b/tests/tests.h
@@ -90,10 +90,14 @@ void check_overflowgid(const int);
 /* Translate errno to its name. */
 const char *errno2name(void);
 
-/* Print flags in symbolic form according to xlat table. */
 struct xlat;
+
+/* Print flags in symbolic form according to xlat table. */
 int printflags(const struct xlat *, const unsigned long long, const char *);
 
+/* Print constant in symbolic form according to xlat table. */
+int printxval(const struct xlat *, const unsigned long long, const char *);
+
 # define ARRAY_SIZE(arg) ((unsigned int) (sizeof(arg) / sizeof((arg)[0])))
 # define LENGTH_OF(arg) ((unsigned int) sizeof(arg) - 1)