moonchen commented on code in PR #13352:
URL: https://github.com/apache/trafficserver/pull/13352#discussion_r3666973574
##########
plugins/prefetch/configs.cc:
##########
@@ -71,14 +71,39 @@ iequals(const StringView lhs, const StringView rhs)
[](const char a, const char b) { return tolower(a) ==
tolower(b); });
}
-void
+bool
PrefetchConfig::setFetchOverflow(const char *optarg)
{
- if (StringView("64") == optarg) {
+ if (nullptr == optarg) {
+ return false;
+ }
+ if (StringView("32") == optarg) {
+ _fetchOverflow = EvalPolicy::Overflow32;
+ } else if (StringView("64") == optarg) {
_fetchOverflow = EvalPolicy::Overflow64;
} else if (iequals("bignum", optarg)) {
_fetchOverflow = EvalPolicy::Bignum;
+ } else {
+ return false;
+ }
+ return true;
+}
+
+/**
+ * @brief Whether @a optarg is a non-empty string of decimal digits (a valid
unsigned integer option).
+ */
+static bool
+isUnsignedInt(const char *optarg)
+{
+ if (nullptr == optarg || '\0' == *optarg) {
+ return false;
+ }
+ for (const char *p = optarg; '\0' != *p; ++p) {
Review Comment:
Good catch.
Switched both `--fetch-count` and `--fetch-max` to `std::from_chars()`
parsing directly into the destination `unsigned`, which reports out-of-range
and trailing junk in the same call. Added `prefetch_bad_count_refused` to cover
it; it fails against the previous code.
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