Import cvs-1.9.23 as at 19980123. There are a number of really nice

things fixed in here, including the '-ko' vs. -A problem with
remote cvs which caused all files with -ko to be resent each time
(which is damn painful over a modem, I can tell you).  It also found a
heap of stray empty directories that should have been pruned with the -P
flag to cvs update but were not for some reason.

It also has the fully integrated rcs and diff, so no more fork/exec
overheads for rcs,ci,patch,diff,etc.  This means that it parses the control
data in the rcs files only once rather than twice or more.

If the 'cvs diff' vs. Index thing is going to be fixed for future patch
compatability, this is the place to do it.

1 files changed, 115 insertions, 0 deletions

diff --git a/contrib/cvs/lib/fncase.c b/contrib/cvs/lib/fncase.c
new file mode 100644
index 0000000..56e7f51
--- /dev/null
+++ b/contrib/cvs/lib/fncase.c
@@ -0,0 +1,115 @@
+/* fncase.c -- CVS support for case insensitive file systems.
+   Jim Blandy <jimb@cyclic.com>
+
+   This file is part of GNU CVS.
+
+   GNU CVS 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, 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.  */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "system.h"
+
+/* The equivalence class mapping for filenames.
+   Windows NT filenames are case-insensitive, but case-preserving.
+   Both / and \ are path element separators.
+   Thus, this table maps both upper and lower case to lower case, and
+   both / and \ to /.  */
+
+#if 0
+main ()
+{
+  int c;
+
+  for (c = 0; c < 256; c++)
+    {
+      int t;
+
+      if (c == '\\')
+        t = '/';
+      else
+        t = tolower (c);
+      
+      if ((c & 0x7) == 0x0)
+         printf ("    ");
+      printf ("0x%02x,", t);
+      if ((c & 0x7) == 0x7)
+         putchar ('\n');
+      else if ((c & 0x7) == 0x3)
+         putchar (' ');
+    }
+}
+#endif
+
+unsigned char
+WNT_filename_classes[] =
+{
+    0x00,0x01,0x02,0x03, 0x04,0x05,0x06,0x07,
+    0x08,0x09,0x0a,0x0b, 0x0c,0x0d,0x0e,0x0f,
+    0x10,0x11,0x12,0x13, 0x14,0x15,0x16,0x17,
+    0x18,0x19,0x1a,0x1b, 0x1c,0x1d,0x1e,0x1f,
+    0x20,0x21,0x22,0x23, 0x24,0x25,0x26,0x27,
+    0x28,0x29,0x2a,0x2b, 0x2c,0x2d,0x2e,0x2f,
+    0x30,0x31,0x32,0x33, 0x34,0x35,0x36,0x37,
+    0x38,0x39,0x3a,0x3b, 0x3c,0x3d,0x3e,0x3f,
+    0x40,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
+    0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
+    0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
+    0x78,0x79,0x7a,0x5b, 0x2f,0x5d,0x5e,0x5f,
+    0x60,0x61,0x62,0x63, 0x64,0x65,0x66,0x67,
+    0x68,0x69,0x6a,0x6b, 0x6c,0x6d,0x6e,0x6f,
+    0x70,0x71,0x72,0x73, 0x74,0x75,0x76,0x77,
+    0x78,0x79,0x7a,0x7b, 0x7c,0x7d,0x7e,0x7f,
+    0x80,0x81,0x82,0x83, 0x84,0x85,0x86,0x87,
+    0x88,0x89,0x8a,0x8b, 0x8c,0x8d,0x8e,0x8f,
+    0x90,0x91,0x92,0x93, 0x94,0x95,0x96,0x97,
+    0x98,0x99,0x9a,0x9b, 0x9c,0x9d,0x9e,0x9f,
+    0xa0,0xa1,0xa2,0xa3, 0xa4,0xa5,0xa6,0xa7,
+    0xa8,0xa9,0xaa,0xab, 0xac,0xad,0xae,0xaf,
+    0xb0,0xb1,0xb2,0xb3, 0xb4,0xb5,0xb6,0xb7,
+    0xb8,0xb9,0xba,0xbb, 0xbc,0xbd,0xbe,0xbf,
+    0xc0,0xc1,0xc2,0xc3, 0xc4,0xc5,0xc6,0xc7,
+    0xc8,0xc9,0xca,0xcb, 0xcc,0xcd,0xce,0xcf,
+    0xd0,0xd1,0xd2,0xd3, 0xd4,0xd5,0xd6,0xd7,
+    0xd8,0xd9,0xda,0xdb, 0xdc,0xdd,0xde,0xdf,
+    0xe0,0xe1,0xe2,0xe3, 0xe4,0xe5,0xe6,0xe7,
+    0xe8,0xe9,0xea,0xeb, 0xec,0xed,0xee,0xef,
+    0xf0,0xf1,0xf2,0xf3, 0xf4,0xf5,0xf6,0xf7,
+    0xf8,0xf9,0xfa,0xfb, 0xfc,0xfd,0xfe,0xff,
+};
+
+/* Like strcmp, but with the appropriate tweaks for file names.
+   Under Windows NT, filenames are case-insensitive but case-preserving,
+   and both \ and / are path element separators.  */
+int
+fncmp (const char *n1, const char *n2)
+{
+    while (*n1 && *n2
+           && (WNT_filename_classes[(unsigned char) *n1]
+	       == WNT_filename_classes[(unsigned char) *n2]))
+        n1++, n2++;
+    return (WNT_filename_classes[(unsigned char) *n1]
+            - WNT_filename_classes[(unsigned char) *n2]);
+}
+
+/* Fold characters in FILENAME to their canonical forms.  
+   If FOLD_FN_CHAR is not #defined, the system provides a default
+   definition for this.  */
+void
+fnfold (char *filename)
+{
+    while (*filename)
+    {
+        *filename = FOLD_FN_CHAR (*filename);
+	filename++;
+    }
+}