76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
// Copyright 2017 The Crashpad Authors
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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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#include "util/misc/lexing.h"
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#include <ctype.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include <limits>
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#include "base/strings/string_number_conversions.h"
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#include "base/strings/string_piece.h"
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namespace crashpad {
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namespace {
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#define MAKE_ADAPTER(type, function) \
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bool ConvertStringToNumber(const base::StringPiece& input, type* value) { \
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return function(input, value); \
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}
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MAKE_ADAPTER(int, base::StringToInt)
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MAKE_ADAPTER(unsigned int, base::StringToUint)
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MAKE_ADAPTER(int64_t, base::StringToInt64)
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MAKE_ADAPTER(uint64_t, base::StringToUint64)
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#undef MAKE_ADAPTER
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} // namespace
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bool AdvancePastPrefix(const char** input, const char* pattern) {
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size_t length = strlen(pattern);
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if (strncmp(*input, pattern, length) == 0) {
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*input += length;
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return true;
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}
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return false;
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}
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template <typename T>
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bool AdvancePastNumber(const char** input, T* value) {
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size_t length = 0;
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if (std::numeric_limits<T>::is_signed && **input == '-') {
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++length;
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}
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while (isdigit((*input)[length])) {
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++length;
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}
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bool success =
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ConvertStringToNumber(base::StringPiece(*input, length), value);
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if (success) {
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*input += length;
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return true;
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}
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return false;
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}
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template bool AdvancePastNumber(const char** input, int* value);
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template bool AdvancePastNumber(const char** input, unsigned int* value);
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template bool AdvancePastNumber(const char** input, int64_t* value);
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template bool AdvancePastNumber(const char** input, uint64_t* value);
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} // namespace crashpad
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