[T106][ZXW-22]7520V3SCV2.01.01.02P42U09_VEC_V0.8_AP_VEC origin source commit
Change-Id: Ic6e05d89ecd62fc34f82b23dcf306c93764aec4b
diff --git a/ap/app/busybox/src/libbb/bb_strtonum.c b/ap/app/busybox/src/libbb/bb_strtonum.c
new file mode 100644
index 0000000..949f26b
--- /dev/null
+++ b/ap/app/busybox/src/libbb/bb_strtonum.c
@@ -0,0 +1,160 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
+ */
+
+#include "libbb.h"
+
+/* On exit: errno = 0 only if there was non-empty, '\0' terminated value
+ * errno = EINVAL if value was not '\0' terminated, but otherwise ok
+ * Return value is still valid, caller should just check whether end[0]
+ * is a valid terminating char for particular case. OTOH, if caller
+ * requires '\0' terminated input, [s]he can just check errno == 0.
+ * errno = ERANGE if value had alphanumeric terminating char ("1234abcg").
+ * errno = ERANGE if value is out of range, missing, etc.
+ * errno = ERANGE if value had minus sign for strtouXX (even "-0" is not ok )
+ * return value is all-ones in this case.
+ *
+ * Test code:
+ * char *endptr;
+ * const char *minus = "-";
+ * errno = 0;
+ * bb_strtoi(minus, &endptr, 0); // must set ERANGE
+ * printf("minus:%p endptr:%p errno:%d EINVAL:%d\n", minus, endptr, errno, EINVAL);
+ * errno = 0;
+ * bb_strtoi("-0-", &endptr, 0); // must set EINVAL and point to second '-'
+ * printf("endptr[0]:%c errno:%d EINVAL:%d\n", endptr[0], errno, EINVAL);
+ */
+
+static unsigned long long ret_ERANGE(void)
+{
+ errno = ERANGE; /* this ain't as small as it looks (on glibc) */
+ return ULLONG_MAX;
+}
+
+static unsigned long long handle_errors(unsigned long long v, char **endp)
+{
+ char next_ch = **endp;
+
+ /* errno is already set to ERANGE by strtoXXX if value overflowed */
+ if (next_ch) {
+ /* "1234abcg" or out-of-range? */
+ if (isalnum(next_ch) || errno)
+ return ret_ERANGE();
+ /* good number, just suspicious terminator */
+ errno = EINVAL;
+ }
+ return v;
+}
+
+
+unsigned long long FAST_FUNC bb_strtoull(const char *arg, char **endp, int base)
+{
+ unsigned long long v;
+ char *endptr;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ /* strtoul(" -4200000000") returns 94967296, errno 0 (!) */
+ /* I don't think that this is right. Preventing this... */
+ if (!isalnum(arg[0])) return ret_ERANGE();
+
+ /* not 100% correct for lib func, but convenient for the caller */
+ errno = 0;
+ v = strtoull(arg, endp, base);
+ return handle_errors(v, endp);
+}
+
+long long FAST_FUNC bb_strtoll(const char *arg, char **endp, int base)
+{
+ unsigned long long v;
+ char *endptr;
+ char first;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ /* Check for the weird "feature":
+ * a "-" string is apparently a valid "number" for strto[u]l[l]!
+ * It returns zero and errno is 0! :( */
+ first = (arg[0] != '-' ? arg[0] : arg[1]);
+ if (!isalnum(first)) return ret_ERANGE();
+
+ errno = 0;
+ v = strtoll(arg, endp, base);
+ return handle_errors(v, endp);
+}
+
+#if ULONG_MAX != ULLONG_MAX
+unsigned long FAST_FUNC bb_strtoul(const char *arg, char **endp, int base)
+{
+ unsigned long v;
+ char *endptr;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ if (!isalnum(arg[0])) return ret_ERANGE();
+ errno = 0;
+ v = strtoul(arg, endp, base);
+ return handle_errors(v, endp);
+}
+
+long FAST_FUNC bb_strtol(const char *arg, char **endp, int base)
+{
+ long v;
+ char *endptr;
+ char first;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ first = (arg[0] != '-' ? arg[0] : arg[1]);
+ if (!isalnum(first)) return ret_ERANGE();
+
+ errno = 0;
+ v = strtol(arg, endp, base);
+ return handle_errors(v, endp);
+}
+#endif
+
+#if UINT_MAX != ULONG_MAX
+unsigned FAST_FUNC bb_strtou(const char *arg, char **endp, int base)
+{
+ unsigned long v;
+ char *endptr;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ if (!isalnum(arg[0])) return ret_ERANGE();
+ errno = 0;
+ v = strtoul(arg, endp, base);
+ if (v > UINT_MAX) return ret_ERANGE();
+ return handle_errors(v, endp);
+}
+
+int FAST_FUNC bb_strtoi(const char *arg, char **endp, int base)
+{
+ long v;
+ char *endptr;
+ char first;
+
+ if (!endp) endp = &endptr;
+ *endp = (char*) arg;
+
+ first = (arg[0] != '-' ? arg[0] : arg[1]);
+ if (!isalnum(first)) return ret_ERANGE();
+
+ errno = 0;
+ v = strtol(arg, endp, base);
+ if (v > INT_MAX) return ret_ERANGE();
+ if (v < INT_MIN) return ret_ERANGE();
+ return handle_errors(v, endp);
+}
+#endif