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/*
* fhist - file history and comparison tools
* Copyright (C) 1993, 1994, 1998, 2002, 2008 Peter Miller
*
* 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 3 of the License, 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, see
* <http://www.gnu.org/licenses/>.
*
* This file contains functions for use with non-ANSI conforming systems
* to implement absent ANSI functionality.
*/
#include <ac/stddef.h>
#include <ac/stdlib.h>
#include <ac/string.h>
#include <ac/stdio.h>
#include <main.h>
/*
* NAME
* strerror - string for error number
*
* SYNOPSIS
* char *strerror(int errnum);
*
* DESCRIPTION
* The strerror function maps the error number in errnum to an error
* message string.
*
* RETURNS
* The strerror function returns a pointer to the string, the contents of
* which are implementation-defined. The array pointed to shall not be
* modified by the program, but may be overwritten by a subsequent call to
* the strerror function.
*
* CAVEAT
* Unknown errors will be rendered in the form "Error %d", where %d will
* be replaced by a decimal representation of the error number.
*/
#ifndef HAVE_STRERROR
char *
strerror(int n)
{
extern int sys_nerr;
extern char *sys_errlist[];
static char buffer[30];
if (n < 1 || n > sys_nerr)
{
sprintf(buffer, "Error %d", n);
return buffer;
}
return sys_errlist[n];
}
#endif /* !HAVE_STRERROR */
#ifndef HAVE_STRCASECMP
int
strcasecmp(const char *s1, const char *s2)
{
int c1;
int c2;
for (;;)
{
c1 = *s1++;
if (islower(c1))
c1 = toupper(c1);
c2 = *s2++;
if (islower(c2))
c2 = toupper(c2);
if (c1 != c2)
{
/*
* if s1 is a leading substring of s2, must
* return -1, even if the next character of s2
* is negative.
*/
if (!c1)
return -1;
if (c1 < c2)
return -1;
return 1;
}
if (!c1)
return 0;
}
}
#endif /* !HAVE_STRCASECMP */
#ifndef HAVE_STRSIGNAL
char *
strsignal(int n)
{
static char buffer[16];
switch (n)
{
#ifdef SIGHUP
case SIGHUP:
return "hang up [SIGHUP]";
#endif /* SIGHUP */
#ifdef SIGINT
case SIGINT:
return "user interrupt [SIGINT]";
#endif /* SIGINT */
#ifdef SIGQUIT
case SIGQUIT:
return "user quit [SIGQUIT]";
#endif /* SIGQUIT */
#ifdef SIGILL
case SIGILL:
return "illegal instruction [SIGILL]";
#endif /* SIGILL */
#ifdef SIGTRAP
case SIGTRAP:
return "trace trap [SIGTRAP]";
#endif /* SIGTRAP */
#ifdef SIGIOT
case SIGIOT:
return "abort [SIGIOT]";
#endif /* SIGIOT */
#ifdef SIGEMT
case SIGEMT:
return "EMT instruction [SIGEMT]";
#endif /* SIGEMT */
#ifdef SIGFPE
case SIGFPE:
return "floating point exception [SIGFPE]";
#endif /* SIGFPE */
#ifdef SIGKILL
case SIGKILL:
return "kill [SIGKILL]";
#endif /* SIGKILL */
#ifdef SIGBUS
case SIGBUS:
return "bus error [SIGBUS]";
#endif /* SIGBUS */
#ifdef SIGSEGV
case SIGSEGV:
return "segmentation violation [SIGSEGV]";
#endif /* SIGSEGV */
#ifdef SIGSYS
case SIGSYS:
return "bad argument to system call [SIGSYS]";
#endif /* SIGSYS */
#ifdef SIGPIPE
case SIGPIPE:
return "write on a pipe with no one to read it [SIGPIPE]";
#endif /* SIGPIPE */
#ifdef SIGALRM
case SIGALRM:
return "alarm clock [SIGALRM]";
#endif /* SIGALRM */
#ifdef SIGTERM
case SIGTERM:
return "software termination [SIGTERM]";
#endif /* SIGTERM */
#ifdef SIGUSR1
case SIGUSR1:
return "user defined signal one [SIGUSR1]";
#endif /* SIGUSR1 */
#ifdef SIGUSR2
case SIGUSR2:
return "user defined signal two [SIGUSR2]";
#endif /* SIGUSR2 */
#ifdef SIGCLD
case SIGCLD:
return "death of child [SIGCLD]";
#endif /* SIGCLD */
#ifdef SIGPWR
case SIGPWR:
return "power failure [SIGPWR]";
#endif /* SIGPWR */
default:
sprintf(buffer, "signal %d", n);
return buffer;
}
}
#endif /* !HAVE_STRSIGNAL */
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