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authorEric Andersen2004-03-06 22:11:45 +0000
committerEric Andersen2004-03-06 22:11:45 +0000
commit2479445562a9b5a9f226d0b00c41dbd533e63213 (patch)
treee4891420283c085d688683a41cc217dc896917b8 /libbb/safe_strtol.c
parentc4db0833a6c91dd3714bec1db076a80910af6e30 (diff)
downloadbusybox-2479445562a9b5a9f226d0b00c41dbd533e63213.zip
busybox-2479445562a9b5a9f226d0b00c41dbd533e63213.tar.gz
Fix/eliminate use of atol
Diffstat (limited to 'libbb/safe_strtol.c')
-rw-r--r--libbb/safe_strtol.c92
1 files changed, 92 insertions, 0 deletions
diff --git a/libbb/safe_strtol.c b/libbb/safe_strtol.c
new file mode 100644
index 0000000..fcbdba8
--- /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
+