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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      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 "Arch.h"
     18 
     19 #include <err.h>
     20 
     21 #include <string>
     22 
     23 std::string to_string(const Arch& arch) {
     24   switch (arch) {
     25     case Arch::arm:
     26       return "arm";
     27 
     28     case Arch::arm64:
     29       return "arm64";
     30 
     31     case Arch::mips:
     32       return "mips";
     33 
     34     case Arch::mips64:
     35       return "mips64";
     36 
     37     case Arch::x86:
     38       return "x86";
     39 
     40     case Arch::x86_64:
     41       return "x86_64";
     42   }
     43 
     44   errx(1, "unknown arch '%zu'", size_t(arch));
     45 }
     46 
     47 static const std::unordered_map<std::string, Arch> arch_name_map{
     48   {"arm", Arch::arm},
     49   {"arm64", Arch::arm64},
     50   {"mips", Arch::mips},
     51   {"mips64", Arch::mips64},
     52   {"x86", Arch::x86},
     53   {"x86_64", Arch::x86_64},
     54 };
     55 
     56 std::optional<Arch> arch_from_string(const std::string& name) {
     57   auto it = arch_name_map.find(name);
     58   if (it == arch_name_map.end()) {
     59     return std::nullopt;
     60   }
     61   return std::make_optional(it->second);
     62 }
     63