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/*
* Utility routines.
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Copyright (C) 2010 ABRT team
* Copyright (C) 2010 RedHat 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 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "libreport.h"
unsigned xatou(const char *numstr)
{
unsigned long r;
int old_errno;
char *e;
if (*numstr < '0' || *numstr > '9')
goto inval;
old_errno = errno;
errno = 0;
r = strtoul(numstr, &e, 10);
if (errno || numstr == e || *e != '\0' || r > UINT_MAX)
goto inval; /* error / no digits / illegal trailing chars */
errno = old_errno; /* Ok. So restore errno. */
return r;
inval:
error_msg_and_die("invalid number '%s'", numstr);
}
int xatoi_positive(const char *numstr)
{
unsigned r = xatou(numstr);
if (r > (unsigned)INT_MAX)
error_msg_and_die("invalid number '%s'", numstr);
return r;
}
int xatoi(const char *numstr)
{
unsigned r;
if (*numstr != '-')
return xatoi_positive(numstr);
r = xatou(numstr + 1);
if (r > (unsigned)INT_MAX + 1)
error_msg_and_die("invalid number '%s'", numstr);
return - (int)r;
}
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