73 lines
2.2 KiB
C++
73 lines
2.2 KiB
C++
// Copyright 2023 The Abseil Authors
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// https://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#include "absl/log/internal/fnmatch.h"
|
|
|
|
#include <cstddef>
|
|
|
|
#include "absl/base/config.h"
|
|
#include "absl/strings/string_view.h"
|
|
|
|
namespace absl {
|
|
ABSL_NAMESPACE_BEGIN
|
|
namespace log_internal {
|
|
bool FNMatch(absl::string_view pattern, absl::string_view str) {
|
|
bool in_wildcard_match = false;
|
|
while (true) {
|
|
if (pattern.empty()) {
|
|
// `pattern` is exhausted; succeed if all of `str` was consumed matching
|
|
// it.
|
|
return in_wildcard_match || str.empty();
|
|
}
|
|
if (str.empty()) {
|
|
// `str` is exhausted; succeed if `pattern` is empty or all '*'s.
|
|
return pattern.find_first_not_of('*') == pattern.npos;
|
|
}
|
|
switch (pattern.front()) {
|
|
case '*':
|
|
pattern.remove_prefix(1);
|
|
in_wildcard_match = true;
|
|
break;
|
|
case '?':
|
|
pattern.remove_prefix(1);
|
|
str.remove_prefix(1);
|
|
break;
|
|
default:
|
|
if (in_wildcard_match) {
|
|
absl::string_view fixed_portion = pattern;
|
|
const size_t end = fixed_portion.find_first_of("*?");
|
|
if (end != fixed_portion.npos) {
|
|
fixed_portion = fixed_portion.substr(0, end);
|
|
}
|
|
const size_t match = str.find(fixed_portion);
|
|
if (match == str.npos) {
|
|
return false;
|
|
}
|
|
pattern.remove_prefix(fixed_portion.size());
|
|
str.remove_prefix(match + fixed_portion.size());
|
|
in_wildcard_match = false;
|
|
} else {
|
|
if (pattern.front() != str.front()) {
|
|
return false;
|
|
}
|
|
pattern.remove_prefix(1);
|
|
str.remove_prefix(1);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
} // namespace log_internal
|
|
ABSL_NAMESPACE_END
|
|
} // namespace absl
|