1 files changed, 81 insertions, 0 deletions
diff --git a/src/share/utf8/makemap.c b/src/share/utf8/makemap.c
new file mode 100644
index 0000000..790021c
--- /dev/null
+++ b/src/share/utf8/makemap.c
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2001 Edmund Grimley Evans <edmundo@rano.org>
+ *
+ * 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 2 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <errno.h>
+#include <iconv.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[])
+{
+  iconv_t cd;
+  const char *ib;
+  char *ob;
+  size_t ibl, obl, k;
+  uint8_t c, buf[4];
+  int i, wc;
+
+  if (argc != 2) {
+    printf("Usage: %s ENCODING\n", argv[0]);
+    printf("Output a charset map for the 8-bit ENCODING.\n");
+    return 1;
+  }
+
+  cd = iconv_open("UCS-4", argv[1]);
+  if (cd == (iconv_t)(-1)) {
+    perror("iconv_open");
+    return 1;
+  }
+
+  for (i = 0; i < 256; i++) {
+    c = i;
+    ib = &c;
+    ibl = 1;
+    ob = buf;
+    obl = 4;
+    k = iconv(cd, &ib, &ibl, &ob, &obl);
+    if (!k && !ibl && !obl) {
+      wc = (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
+      if (wc >= 0xffff) {
+	printf("Dodgy value.\n");
+	return 1;
+      }
+    }
+    else if (k == (size_t)(-1) && errno == EILSEQ)
+      wc = 0xffff;
+    else {
+      printf("Non-standard iconv.\n");
+      return 1;
+    }
+
+    if (i % 8 == 0)
+      printf("  ");
+    printf("0x%04x", wc);
+    if (i == 255)
+      printf("\n");
+    else if (i % 8 == 7)
+      printf(",\n");
+    else
+      printf(", ");
+  }
+
+  return 0;
+}