mirror of
git://git.sv.gnu.org/findutils.git
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Bernhard Voelker
f1f6471ae8
Run 'make update-copyright'. * lib/regexprops.c (copying): Update the year number manually. * tests/sample-test: Adjust to use the single most recent year. * All other files: Update copyright years via the above make run.
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/* safe-atoi.c -- checked string-to-int conversion.
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Copyright (C) 2007-2025 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* config.h must be included first. */
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#include <config.h>
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/* system headers. */
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#include <errno.h>
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#include <limits.h>
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#include <stdlib.h>
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/* gnulib headers. */
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#include "quotearg.h"
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/* find headers. */
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#include "system.h"
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#include "safe-atoi.h"
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int
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safe_atoi (const char *s, enum quoting_style style)
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{
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long lval;
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char *end;
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errno = 0;
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lval = strtol (s, &end, 10);
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if ( (LONG_MAX == lval) || (LONG_MIN == lval) )
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{
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/* max/min possible value, or an error. */
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if (errno == ERANGE)
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{
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/* too big, or too small. */
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error (EXIT_FAILURE, errno, "%s", s);
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}
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else
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{
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/* not a valid number */
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error (EXIT_FAILURE, errno, "%s", s);
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}
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/* Otherwise, we do a range check against INT_MAX and INT_MIN
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* below.
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*/
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}
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if (lval > INT_MAX || lval < INT_MIN)
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{
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/* The number was in range for long, but not int. */
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errno = ERANGE;
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error (EXIT_FAILURE, errno, "%s", s);
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}
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else if (*end)
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{
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error (EXIT_FAILURE, errno, _("Unexpected suffix %s on %s"),
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quotearg_n_style (0, style, end),
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quotearg_n_style (1, style, s));
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}
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else if (end == s)
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{
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error (EXIT_FAILURE, errno, _("Expected an integer: %s"),
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quotearg_n_style (0, style, s));
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}
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return (int)lval;
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}
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