diff options
author | Eric Andersen <andersen@codepoet.org> | 2004-03-07 01:11:45 +0300 |
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committer | Eric Andersen <andersen@codepoet.org> | 2004-03-07 01:11:45 +0300 |
commit | 2479445562a9b5a9f226d0b00c41dbd533e63213 (patch) | |
tree | e4891420283c085d688683a41cc217dc896917b8 /libbb/safe_strtol.c | |
parent | c4db0833a6c91dd3714bec1db076a80910af6e30 (diff) |
Fix/eliminate use of atol
Diffstat (limited to 'libbb/safe_strtol.c')
-rw-r--r-- | libbb/safe_strtol.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/libbb/safe_strtol.c b/libbb/safe_strtol.c new file mode 100644 index 000000000..fcbdba878 --- /dev/null +++ b/libbb/safe_strtol.c @@ -0,0 +1,92 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> + * + * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <stdlib.h> +#include <errno.h> +#include <assert.h> +#include "libbb.h" + +#ifdef L_safe_strtoi +extern +int safe_strtoi(char *arg, int* value) +{ + int error; + long lvalue = *value; + error = safe_strtol(arg, &lvalue); + *value = (int) lvalue; + return error; +} +#endif + +#ifdef L_safe_strtod +extern +int safe_strtod(char *arg, double* value) +{ + char *endptr; + int errno_save = errno; + + assert(arg!=NULL); + errno = 0; + *value = strtod(arg, &endptr); + if (errno != 0 || *endptr!='\0' || endptr==arg) { + return 1; + } + errno = errno_save; + return 0; +} +#endif + +#ifdef L_safe_strtol +extern +int safe_strtol(char *arg, long* value) +{ + char *endptr; + int errno_save = errno; + + assert(arg!=NULL); + errno = 0; + *value = strtol(arg, &endptr, 0); + if (errno != 0 || *endptr!='\0' || endptr==arg) { + return 1; + } + errno = errno_save; + return 0; +} +#endif + +#ifdef L_safe_strtoul +extern +int safe_strtoul(char *arg, unsigned long* value) +{ + char *endptr; + int errno_save = errno; + + assert(arg!=NULL); + errno = 0; + *value = strtoul(arg, &endptr, 0); + if (errno != 0 || *endptr!='\0' || endptr==arg) { + return 1; + } + errno = errno_save; + return 0; +} +#endif + |