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gcc/texinfo/info/clib.c
1998-03-24 11:08:49 -07:00

113 lines
2.4 KiB
C

/* clib.c: Functions which we normally expect to find in the C library.
$Id: clib.c,v 1.1.1.1 1997/08/21 22:57:59 jason Exp $
This file is part of GNU Info, a program for reading online documentation
stored in Info format.
Copyright (C) 1995 Free Software Foundation, Inc.
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, 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Written by Brian Fox (bfox@ai.mit.edu). */
#include <stdio.h>
#if defined (HAVE_UNISTD_H)
#include <unistd.h>
#endif
#if defined (HAVE_STDLIB_H)
#include <stdlib.h>
#endif
#if defined (HAVE_STRING_H)
#include <string.h>
#endif
#include <sys/errno.h>
extern void *xmalloc (), *xrealloc ();
#include "general.h"
#if !defined (errno)
extern int errno;
#endif
#if !defined (HAVE_STRERROR)
extern char *sys_errlist[];
extern int sys_nerr;
char *
strerror (num)
int num;
{
if (num >= sys_nerr)
return ("");
else
return (sys_errlist[num]);
}
#endif /* !HAVE_STRERROR */
#if !defined (HAVE_STRCASECMP)
/* This Unix doesn't have the strcasecmp () function. */
int
strcasecmp (string1, string2)
char *string1, *string2;
{
char ch1, ch2;
for (;;)
{
ch1 = *string1++;
ch2 = *string2++;
if (!(ch1 | ch2))
return (0);
ch1 = info_toupper (ch1);
ch2 = info_toupper (ch2);
if (ch1 != ch2)
return (ch1 - ch2);
}
}
/* Compare at most COUNT characters from string1 to string2. Case
doesn't matter. */
int
strncasecmp (string1, string2, count)
char *string1, *string2;
int count;
{
register char ch1, ch2;
while (count)
{
ch1 = *string1++;
ch2 = *string2++;
ch1 = info_toupper (ch1);
ch2 = info_toupper (ch2);
if (ch1 == ch2)
count--;
else
break;
}
return (count);
}
#endif /* !STRCASECMP */