/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying

   file LICENSE.rst or https://cmake.org/licensing for details.  */

#include "cmPropertyMap.h"

#include <algorithm>

#include <utility>

void cmPropertyMap::Clear()

{

  this->Map_.clear();

}

void cmPropertyMap::SetProperty(std::string const& name, cmValue value)

{

  if (!value) {

    this->Map_.erase(name);

    return;

  }

  this->Map_[name] = *value;

}

void cmPropertyMap::AppendProperty(std::string const& name,

                                   std::string const& value, bool asString)

{

  // Skip if nothing to append.

  if (value.empty()) {

    return;

  }

  {

    std::string& pVal = this->Map_[name];

    if (!pVal.empty() && !asString) {

      pVal += ';';

    }

    pVal += value;

  }

}

void cmPropertyMap::RemoveProperty(std::string const& name)

{

  this->Map_.erase(name);

}

cmValue cmPropertyMap::GetPropertyValue(std::string const& name) const

{

  auto it = this->Map_.find(name);

  if (it != this->Map_.end()) {

    return cmValue(it->second);

  }

  return nullptr;

}

std::vector<std::string> cmPropertyMap::GetKeys() const

{

  std::vector<std::string> keyList;

  keyList.reserve(this->Map_.size());

  for (auto const& item : this->Map_) {

    keyList.push_back(item.first);

  }

  std::sort(keyList.begin(), keyList.end());

  return keyList;

}

std::vector<std::pair<std::string, std::string>> cmPropertyMap::GetList() const

{

  using StringPair = std::pair<std::string, std::string>;

  std::vector<StringPair> kvList;

  kvList.reserve(this->Map_.size());

  for (auto const& item : this->Map_) {

    kvList.emplace_back(item.first, item.second);

  }

  std::sort(kvList.begin(), kvList.end(),

            [](StringPair const& a, StringPair const& b) {

              return a.first < b.first;

            });

  return kvList;

}