message: Use load_all_ports() in `portsdiff`
diff: #include "vcpkg_Commands.h"
  #include "vcpkg_System.h"
  #include "vcpkg_Maps.h"
  -#include "Paragraphs.h"
  #include "SourceParagraph.h"
  #include "vcpkg_Environment.h"
  +#include "vcpkglib.h"
  namespace vcpkg::Commands::PortsDiff
  {
  @@ -40,25 +40,14 @@ namespace vcpkg::Commands::PortsDiff
  }
  }
  - static std::map<std::string, std::string> read_all_ports(const fs::path& ports_folder_path)
  + static std::map<std::string, std::string> read_port_names_and_versions(const fs::path& ports_folder_path)
  {
  std::map<std::string, std::string> names_and_versions;
  - for (auto it = fs::directory_iterator(ports_folder_path); it != fs::directory_iterator(); ++it)
  + std::vector<SourceParagraph> ports = load_all_ports(ports_folder_path);
  + for (SourceParagraph& port : ports)
  {
  - const fs::path& path = it->path();
  -
  - try
  - {
  - auto pghs = Paragraphs::get_paragraphs(path / "CONTROL");
  - if (pghs.empty())
  - continue;
  - auto srcpgh = SourceParagraph(pghs[0]);
  - names_and_versions.emplace(srcpgh.name, srcpgh.version);
  - }
  - catch (std::runtime_error const&)
  - {
  - }
  + names_and_versions.emplace(std::move(port.name), std::move(port.version));
  }
  return names_and_versions;
  @@ -79,7 +68,7 @@ namespace vcpkg::Commands::PortsDiff
  checkout_this_dir,
  L".vcpkg-root");
  System::cmd_execute(cmd);
  - std::map<std::string, std::string> names_and_versions = read_all_ports(temp_checkout_path / ports_dir_name_as_string);
  + std::map<std::string, std::string> names_and_versions = read_port_names_and_versions(temp_checkout_path / ports_dir_name_as_string);
  fs::remove_all(temp_checkout_path);
  return names_and_versions;
  }
  