1 files changed, 55 insertions, 0 deletions
diff --git a/string/test/stringtest.h b/string/test/stringtest.h
new file mode 100644
index 0000000..fe855fc
--- /dev/null
+++ b/string/test/stringtest.h
@@ -0,0 +1,55 @@
+/*
+ * Common string test code.
+ *
+ * Copyright (c) 2020, Arm Limited.
+ * SPDX-License-Identifier: MIT
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+
+/* Accounting errors for a test case.  */
+static int err_count;
+#define ERR_LIMIT 10
+#define ERR(...) (err_count++, printf (__VA_ARGS__))
+
+static inline void
+quotechar (unsigned char c)
+{
+  if (isprint (c))
+    putchar (c);
+  else
+    printf ("\\x%02x", c);
+}
+
+/* quoted print around at or the entire string if at < 0.  */
+static void
+quoteat (const char *prefix, const void *p, int len, int at)
+{
+  static const int CTXLEN = 15;
+  int i;
+  const char *pre = "\"";
+  const char *post = "\"";
+  const char *s = p;
+  if (at > CTXLEN)
+    {
+      s += at - CTXLEN;
+      len -= at - CTXLEN;
+      pre = "...\"";
+    }
+  if (at >= 0 && len > 2 * CTXLEN + 1)
+    {
+      len = 2 * CTXLEN + 1;
+      post = "\"...";
+    }
+  printf ("%4s: %s", prefix, pre);
+  for (i = 0; i < len; i++)
+    quotechar (s[i]);
+  printf ("%s\n", post);
+}
+
+static inline void
+quote (const char *prefix, const void *p, int len)
+{
+  quoteat (prefix, p, len, -1);
+}