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/* 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
/* Under Windows NT, filenames are case-insensitive but case-preserving,
and both \ and / are path element separators. */
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,
};
/* Same as WNT_filename_classes, but do not fold `\' into `/'. */
unsigned char
OSX_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. Under Mac OS X, filenames
are case-insensitive but case-preserving. */
int
fncmp (const char *n1, const char *n2)
{
while (*n1 && *n2
&& (FOLD_FN_CHAR(*n1)
== FOLD_FN_CHAR(*n2)))
n1++, n2++;
return (FOLD_FN_CHAR(*n1) - FOLD_FN_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++;
}
}
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