c34026b101
note: done using ```sh git grep -l "2010-2024 Google" | xargs sed -i 's/2010-2024 Google/2010-2025 Google/' ```
94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
// Copyright 2010-2025 Google LLC
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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 "ortools/util/parse_proto.h"
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#include <string>
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#include <vector>
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#include "absl/strings/str_cat.h"
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#include "absl/strings/str_split.h"
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#include "google/protobuf/io/tokenizer.h"
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#include "google/protobuf/text_format.h"
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namespace operations_research {
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namespace {
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class TextFormatErrorCollector : public google::protobuf::io::ErrorCollector {
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public:
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struct CollectedError {
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bool warning;
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int line;
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int column;
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std::string message;
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};
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TextFormatErrorCollector() = default;
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~TextFormatErrorCollector() override = default;
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void RecordError(const int line, const int column,
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absl::string_view message) override {
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collected_errors_.push_back(
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{/*warning=*/false, line, column, std::string(message)});
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}
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void RecordWarning(const int line, const int column,
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absl::string_view message) override {
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collected_errors_.push_back(
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{/*warning=*/true, line, column, std::string(message)});
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}
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// Returns a string listing each collected error. When an error is associated
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// with a line number and column number that can be found in `value`, that
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// error message is shown in context using a caret (^), like:
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// { good_field: 1 error_field: "bad" }
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// ^
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std::string RenderErrorMessage(const absl::string_view value) {
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std::string message;
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std::vector<std::string> value_lines = absl::StrSplit(value, '\n');
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for (const auto& error : collected_errors_) {
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if (error.warning) {
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absl::StrAppend(&message, "warning: ");
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}
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absl::StrAppend(&message, error.message, "\n");
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if (error.line >= 0 && error.line < value_lines.size()) {
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const std::string& error_line = value_lines[error.line];
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if (error.column >= 0 && error.column < error_line.size()) {
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// If possible, use ^ to point at error.column in error_line.
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absl::StrAppend(&message, error_line, "\n");
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absl::StrAppend(&message, std::string(error.column, ' '), "^\n");
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}
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}
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}
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return message;
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}
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private:
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std::vector<CollectedError> collected_errors_;
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};
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} // namespace
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bool ParseTextProtoForFlag(const absl::string_view text,
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google::protobuf::Message* const message_out,
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std::string* const error_out) {
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TextFormatErrorCollector errors;
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google::protobuf::TextFormat::Parser parser;
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parser.RecordErrorsTo(&errors);
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const bool success = parser.ParseFromString(std::string(text), message_out);
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*error_out = errors.RenderErrorMessage(text);
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return success;
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}
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} // namespace operations_research
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