51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
//
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// Copyright (C) 2020 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#include <inttypes.h>
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#include <android-base/stringprintf.h>
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#include <kver/kmi_version.h>
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namespace android::kver {
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#define KMI_VERSION_PRINT_FORMAT "%" PRIu64 ".%" PRIu64 "-android%" PRIu64 "-%" PRIu64
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#define KMI_VERSION_SCAN_FORMAT KMI_VERSION_PRINT_FORMAT "%n"
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// Not taking a string_view because sscanf requires null-termination.
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std::optional<KmiVersion> KmiVersion::Parse(const std::string& s) {
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if (s.size() > std::numeric_limits<int>::max()) return std::nullopt;
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int nchars = -1;
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KmiVersion ret;
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auto scan_res = sscanf(s.c_str(), KMI_VERSION_SCAN_FORMAT, &ret.version_, &ret.patch_level_,
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&ret.release_, &ret.gen_, &nchars);
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if (scan_res != 4) return std::nullopt;
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if (nchars < 0) return std::nullopt;
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// Ensure the whole string is consumed.
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if (nchars != s.size()) return std::nullopt;
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return ret;
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}
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std::string KmiVersion::string() const {
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return android::base::StringPrintf(KMI_VERSION_PRINT_FORMAT, version(), patch_level(),
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android_release(), generation());
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}
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std::tuple<uint64_t, uint64_t, uint64_t, uint64_t> KmiVersion::tuple() const {
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return std::make_tuple(version(), patch_level(), android_release(), generation());
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}
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} // namespace android::kver
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