src/build_config.cc

// Copyright 2023 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

#include "build_config.h"

#include <inttypes.h>

#include "ipc_utils.h"
#include "process_utils.h"
#include "util.h"

std::string BuildConfig::status_format() const {
  std::string result = "[%f/%t] ";
  const char* env = environment.Get("NINJA_STATUS");
  if (env)
    result = env;
  return result;
}

int BuildConfig::status_max_commands() const {
  int result = 0;
  const char* env = environment.Get("NINJA_STATUS_MAX_COMMANDS");
  if (env) {
    int count = atoi(env);
    if (count < 0)
      count = 0;
    result = count;
  }
  return result;
}

int64_t BuildConfig::status_refresh_millis() const {
  int64_t result = 100;
  const char* env = environment.Get("NINJA_STATUS_REFRESH_MILLIS");
  if (env) {
    long long val = strtoll(env, NULL, 10);
    result = static_cast<int64_t>(val);
  }
  return result;
}

bool BuildConfig::operator==(const BuildConfig& o) const {
  return verbosity == o.verbosity && dry_run == o.dry_run &&
         parallelism == o.parallelism &&
         failures_allowed == o.failures_allowed &&
         max_load_average == o.max_load_average &&
         depfile_parser_options == o.depfile_parser_options &&
         input_file == o.input_file && environment == o.environment;
}

std::string BuildConfig::ToEncodedString() const {
  WireEncoder encoder;
  encoder.Write(verbosity);
  encoder.Write(dry_run);
  encoder.Write(parallelism);
  encoder.Write(failures_allowed);
  encoder.Write(max_load_average);
  // depfile_parser_options is empty!
  encoder.Write(input_file);
  encoder.Write(environment.ToEncodedString());
  return encoder.TakeResult();
}

// static
BuildConfig BuildConfig::FromEncodedString(const std::string& str,
                                           std::string* error) {
  BuildConfig result;

  WireDecoder decoder(str);
  error->clear();
  decoder.Read(result.verbosity);
  decoder.Read(result.dry_run);
  decoder.Read(result.parallelism);
  decoder.Read(result.failures_allowed);
  decoder.Read(result.max_load_average);
  // depfile_parser_options is empty!
  decoder.Read(result.input_file);

  std::string encoded;
  decoder.Read(encoded);
  if (decoder.has_error()) {
    *error = "Truncated BuildCOnfig encoded string";
    return {};
  }

  result.environment = EnvironmentBlock::FromEncodedString(encoded, error);
  if (!error->empty())
    return {};

  return result;
}

std::string BuildConfig::ToString() const {
  std::string result = "verbosity=";
  switch (verbosity) {
  case QUIET:
    result += "quiet";
    break;
  case NO_STATUS_UPDATE:
    result += "no-status-upadte";
    break;
  case NORMAL:
    result += "normal";
    break;
  case VERBOSE:
    result += "verbose";
    break;
  default:
    StringAppendFormat(result, "unknown(%d)", static_cast<int>(verbosity));
  }

  StringAppendFormat(
      result,
      " dry_run=%s parallelism=%d failures_allowed=%d max_load_average=%.2f",
      dry_run ? "true" : "false", parallelism, failures_allowed,
      max_load_average);

  StringAppendFormat(result, "input_file=%s", input_file.c_str());

  StringAppendFormat(
      result,
      " environment=%s", environment.AsString().c_str());

  StringAppendFormat(
      result,
      " status_format=%s status_max_commands=%d status_refresh_millis=" PRId64,
      status_format().c_str(), status_max_commands(), status_refresh_millis());

  return result;
}