text: /*************************************************************************/
  /*  godotsharp_export.cpp                                                */
  /*************************************************************************/
  /*                       This file is part of:                           */
  /*                           GODOT ENGINE                                */
  /*                      https://godotengine.org                          */
  /*************************************************************************/
  /* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
  /* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
  /*                                                                       */
  /* Permission is hereby granted, free of charge, to any person obtaining */
  /* a copy of this software and associated documentation files (the       */
  /* "Software"), to deal in the Software without restriction, including   */
  /* without limitation the rights to use, copy, modify, merge, publish,   */
  /* distribute, sublicense, and/or sell copies of the Software, and to    */
  /* permit persons to whom the Software is furnished to do so, subject to */
  /* the following conditions:                                             */
  /*                                                                       */
  /* The above copyright notice and this permission notice shall be        */
  /* included in all copies or substantial portions of the Software.       */
  /*                                                                       */
  /* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
  /* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
  /* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
  /* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
  /* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
  /* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
  /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
  /*************************************************************************/
  
  #include "godotsharp_export.h"
  
  #include <mono/metadata/image.h>
  
  #include "core/os/os.h"
  
  #include "../mono_gd/gd_mono.h"
  #include "../mono_gd/gd_mono_assembly.h"
  #include "../mono_gd/gd_mono_cache.h"
  
  namespace GodotSharpExport {
  
  MonoAssemblyName *new_mono_assembly_name() {
  	// Mono has no public API to create an empty MonoAssemblyName and the struct is private.
  	// As such the only way to create it is with a stub name and then clear it.
  
  	MonoAssemblyName *aname = mono_assembly_name_new("stub");
  	CRASH_COND(aname == nullptr);
  	mono_assembly_name_free(aname); // Frees the string fields, not the struct
  	return aname;
  }
  
  struct AssemblyRefInfo {
  	String name;
  	uint16_t major;
  	uint16_t minor;
  	uint16_t build;
  	uint16_t revision;
  };
  
  AssemblyRefInfo get_assemblyref_name(MonoImage *p_image, int index) {
  	const MonoTableInfo *table_info = mono_image_get_table_info(p_image, MONO_TABLE_ASSEMBLYREF);
  
  	uint32_t cols[MONO_ASSEMBLYREF_SIZE];
  
  	mono_metadata_decode_row(table_info, index, cols, MONO_ASSEMBLYREF_SIZE);
  
  	return {
  		String::utf8(mono_metadata_string_heap(p_image, cols[MONO_ASSEMBLYREF_NAME])),
  		(uint16_t)cols[MONO_ASSEMBLYREF_MAJOR_VERSION],
  		(uint16_t)cols[MONO_ASSEMBLYREF_MINOR_VERSION],
  		(uint16_t)cols[MONO_ASSEMBLYREF_BUILD_NUMBER],
  		(uint16_t)cols[MONO_ASSEMBLYREF_REV_NUMBER]
  	};
  }
  
  Error get_assembly_dependencies(GDMonoAssembly *p_assembly, MonoAssemblyName *reusable_aname, const Vector<String> &p_search_dirs, Dictionary &r_assembly_dependencies) {
  	MonoImage *image = p_assembly->get_image();
  
  	for (int i = 0; i < mono_image_get_table_rows(image, MONO_TABLE_ASSEMBLYREF); i++) {
  		AssemblyRefInfo ref_info = get_assemblyref_name(image, i);
  
  		const String &ref_name = ref_info.name;
  
  		if (r_assembly_dependencies.has(ref_name))
  			continue;
  
  		mono_assembly_get_assemblyref(image, i, reusable_aname);
  
  		GDMonoAssembly *ref_assembly = NULL;
  		if (!GDMono::get_singleton()->load_assembly(ref_name, reusable_aname, &ref_assembly, /* refonly: */ true, p_search_dirs)) {
  			ERR_FAIL_V_MSG(ERR_CANT_RESOLVE, "Cannot load assembly (refonly): '" + ref_name + "'.");
  		}
  
  		r_assembly_dependencies[ref_name] = ref_assembly->get_path();
  
  		Error err = get_assembly_dependencies(ref_assembly, reusable_aname, p_search_dirs, r_assembly_dependencies);
  		ERR_FAIL_COND_V_MSG(err != OK, err, "Cannot load one of the dependencies for the assembly: '" + ref_name + "'.");
  	}
  
  	return OK;
  }
  
  Error get_exported_assembly_dependencies(const Dictionary &p_initial_assemblies,
  		const String &p_build_config, const String &p_custom_bcl_dir, Dictionary &r_assembly_dependencies) {
  	MonoDomain *export_domain = GDMonoUtils::create_domain("GodotEngine.Domain.ProjectExport");
  	ERR_FAIL_NULL_V(export_domain, FAILED);
  	_GDMONO_SCOPE_EXIT_DOMAIN_UNLOAD_(export_domain);
  
  	_GDMONO_SCOPE_DOMAIN_(export_domain);
  
  	Vector<String> search_dirs;
  	GDMonoAssembly::fill_search_dirs(search_dirs, p_build_config, p_custom_bcl_dir);
  
  	for (const Variant *key = p_initial_assemblies.next(); key; key = p_initial_assemblies.next(key)) {
  		String assembly_name = *key;
  		String assembly_path = p_initial_assemblies[*key];
  
  		GDMonoAssembly *assembly = NULL;
  		bool load_success = GDMono::get_singleton()->load_assembly_from(assembly_name, assembly_path, &assembly, /* refonly: */ true);
  
  		ERR_FAIL_COND_V_MSG(!load_success, ERR_CANT_RESOLVE, "Cannot load assembly (refonly): '" + assembly_name + "'.");
  
  		MonoAssemblyName *reusable_aname = new_mono_assembly_name();
  		SCOPE_EXIT { mono_free(reusable_aname); };
  
  		Error err = get_assembly_dependencies(assembly, reusable_aname, search_dirs, r_assembly_dependencies);
  		if (err != OK)
  			return err;
  	}
  
  	return OK;
  }
  
  } // namespace GodotSharpExport
  