freebsd-skq/contrib/cvs/lib/fncase.c
Peter Wemm 57e58c3aa7 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.
1998-01-26 03:09:57 +00:00

116 lines
3.5 KiB
C

/* 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++;
}
}