Complete test of uc_width results.

[gnulib.git] / tests / uniwidth / test-uc_width2.c

diff --git a/tests/uniwidth/test-uc_width2.c b/tests/uniwidth/test-uc_width2.c
new file mode 100644 (file)
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+++ b/tests/uniwidth/test-uc_width2.c
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+/* Test of uc_width() function.
+   Copyright (C) 2007-2008 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2008.  */
+
+#include <config.h>
+
+#include "uniwidth.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define ASSERT(expr) \
+  do                                                                        \
+    {                                                                       \
+      if (!(expr))                                                          \
+        {                                                                   \
+          fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
+          fflush (stderr);                                                  \
+          abort ();                                                         \
+        }                                                                   \
+    }                                                                       \
+  while (0)
+
+/* One of 0, '0', '1', 'A', '2'.  */
+static char current_width;
+/* The interval for which the current_width holds.  */
+static ucs4_t current_start;
+static ucs4_t current_end;
+
+static void
+finish_interval (void)
+{
+  if (current_width != 0)
+    {
+      if (current_start == current_end)
+       printf ("%04X\t\t%c\n", current_start, current_width);
+      else
+       printf ("%04X..%04X\t%c\n", current_start, current_end, current_width);
+      current_width = 0;
+    }
+}
+
+static void
+add_to_interval (ucs4_t uc, char width)
+{
+  if (current_width == width && uc == current_end + 1)
+    current_end = uc;
+  else
+    {
+      finish_interval ();
+      current_width = width;
+      current_start = current_end = uc;
+    }
+}
+
+int
+main ()
+{
+  ucs4_t uc;
+
+  for (uc = 0; uc < 0x110000; uc++)
+    {
+      int w1 = uc_width (uc, "UTF-8");
+      int w2 = uc_width (uc, "GBK");
+      char width =
+       (w1 == 0 && w2 == 0 ? '0' :
+        w1 == 1 && w2 == 1 ? '1' :
+        w1 == 1 && w2 == 2 ? 'A' :
+        w1 == 2 && w2 == 2 ? '2' :
+        0);
+      if (width == 0)
+       {
+         /* uc must be a control character.  */
+         ASSERT (w1 < 0 && w2 < 0);
+       }
+      else
+       add_to_interval (uc, width);
+    }
+  finish_interval ();
+
+  return 0;
+}