File: cmExportInstallPackageInfoGenerator.h

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/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
   file Copyright.txt or https://cmake.org/licensing for details.  */
#pragma once

#include "cmConfigure.h" // IWYU pragma: keep

#include <iosfwd>
#include <string>
#include <vector>

#include "cmExportInstallFileGenerator.h"
#include "cmExportPackageInfoGenerator.h"

class cmGeneratorTarget;
class cmInstallExportGenerator;

/** \class cmExportInstallPackageInfoGenerator
 * \brief Generate files exporting targets from an install tree.
 *
 * cmExportInstallPackageInfoGenerator generates files exporting targets from
 * an installation tree.  The files are placed in a temporary location for
 * installation by cmInstallExportGenerator.  The file format is the Common
 * Package Specification (https://cps-org.github.io/cps/).
 *
 * One main file is generated that describes the imported targets.  Additional,
 * per-configuration files describe target locations and settings for each
 * configuration.
 *
 * This is used to implement the INSTALL(PACKAGE_INFO) command.
 */
class cmExportInstallPackageInfoGenerator
  : public cmExportPackageInfoGenerator
  , public cmExportInstallFileGenerator
{
public:
  /** Construct with the export installer that will install the
      files.  */
  cmExportInstallPackageInfoGenerator(
    cmInstallExportGenerator* iegen, std::string packageName,
    std::string version, std::string versionCompat, std::string versionSchema,
    std::vector<std::string> defaultTargets,
    std::vector<std::string> defaultConfigurations);

  /** Compute the globbing expression used to load per-config import
      files from the main file.  */
  std::string GetConfigImportFileGlob() const override;

protected:
  std::string const& GetExportName() const override;

  // Implement virtual methods from the superclass.
  bool GenerateMainFile(std::ostream& os) override;
  void GenerateImportTargetsConfig(std::ostream& os, std::string const& config,
                                   std::string const& suffix) override;

  char GetConfigFileNameSeparator() const override { return '@'; }

  /** Generate the cps_path, which determines the import prefix.  */
  std::string GenerateImportPrefix() const;

  std::string InstallNameDir(cmGeneratorTarget const* target,
                             std::string const& config) override;

  std::string GetCxxModulesDirectory() const override;
  // TODO: Generate C++ module info in a not-CMake-specific format.
};