kythe.io@v0.0.68-0.20240422202219-7225dbc01741/kythe/cxx/common/re2_flag.cc (about)

     1  /*
     2   * Copyright 2020 The Kythe Authors. All rights reserved.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   *   http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  
    17  #include "kythe/cxx/common/re2_flag.h"
    18  
    19  #include <memory>
    20  #include <string>
    21  
    22  #include "absl/strings/string_view.h"
    23  #include "re2/re2.h"
    24  
    25  namespace kythe {
    26  bool AbslParseFlag(absl::string_view text, RE2Flag* value, std::string* error) {
    27    if (text.empty()) {
    28      return true;
    29    }
    30    re2::RE2::Options options;
    31    options.set_never_capture(true);
    32    *value = {std::make_shared<re2::RE2>(text, options)};
    33    if (!value->value->ok()) {
    34      *error = value->value->error();
    35    }
    36    return value->value->ok();
    37  }
    38  std::string AbslUnparseFlag(const RE2Flag& value) {
    39    if (value.value == nullptr) {
    40      return "";
    41    }
    42    return value.value->pattern();
    43  }
    44  }  // namespace kythe