1 files changed, 119 insertions, 0 deletions
diff --git a/tc.nls.c b/tc.nls.c
new file mode 100644
index 0000000..5a75f68
--- /dev/null
+++ b/tc.nls.c
@@ -0,0 +1,119 @@
+/* $Header: /p/tcsh/cvsroot/tcsh/tc.nls.c,v 3.21 2006/09/26 16:45:30 christos Exp $ */
+/*
+ * tc.nls.c: NLS handling
+ */
+/*-
+ * Copyright (c) 1980, 1991 The Regents of the University of California.
+ * 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. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 "sh.h"
+
+RCSID("$tcsh: tc.nls.c,v 3.21 2006/09/26 16:45:30 christos Exp $")
+
+#ifdef WIDE_STRINGS
+int
+NLSWidth(Char c)
+{
+# ifdef HAVE_WCWIDTH
+    int l;
+    if (c & INVALID_BYTE)
+	return 1;
+    l = wcwidth(c);
+    return l >= 0 ? l : 0;
+# else
+    return iswprint(c) != 0;
+# endif
+}
+
+int
+NLSStringWidth(const Char *s)
+{
+    int w = 0, l;
+    Char c;
+
+    while (*s) {
+	c = *s++;
+#ifdef HAVE_WCWIDTH
+	if ((l = wcwidth(c)) < 0)
+		l = 2;
+#else
+	l = iswprint(c) != 0;
+#endif
+	w += l;
+    }
+    return w;
+}
+#endif
+
+Char *
+NLSChangeCase(const Char *p, int mode)
+{
+    Char c, *n, c2 = 0;
+    const Char *op = p;
+
+    for (; (c = *p) != 0; p++) {
+        if (mode == 0 && Islower(c)) {
+	    c2 = Toupper(c);
+	    break;
+        } else if (mode && Isupper(c)) {
+	    c2 = Tolower(c);
+	    break;
+	}
+    }
+    if (!*p)
+	return 0;
+    n = Strsave(op);
+    n[p - op] = c2;
+    return n;
+}
+
+int
+NLSClassify(Char c, int nocomb)
+{
+    int w;
+    if (c & INVALID_BYTE)
+	return NLSCLASS_ILLEGAL;
+    w = NLSWidth(c);
+    if ((w > 0 && !(Iscntrl(c) && (c & CHAR) < 0x100)) || (Isprint(c) && !nocomb))
+	return w;
+    if (Iscntrl(c) && (c & CHAR) < 0x100) {
+	if (c == '\n')
+	    return NLSCLASS_NL;
+	if (c == '\t')
+	    return NLSCLASS_TAB;
+	return NLSCLASS_CTRL;
+    }
+#ifdef WIDE_STRINGS
+    if (c >= 0x1000000)
+	return NLSCLASS_ILLEGAL4;
+    if (c >= 0x10000)
+	return NLSCLASS_ILLEGAL3;
+#endif
+    if (c >= 0x100)
+	return NLSCLASS_ILLEGAL2;
+    return NLSCLASS_ILLEGAL;
+}