/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- * GObject introspection: Repository implementation * * Copyright (C) 2005 Matthias Clasen * Copyright (C) 2008 Colin Walters * Copyright (C) 2008 Red Hat, Inc. * * SPDX-License-Identifier: LGPL-2.1-or-later * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include #include #include #include #include #include #include "gibaseinfo-private.h" #include "girepository.h" #include "gitypelib-internal.h" #include "girepository-private.h" /** * GIRepository: * * `GIRepository` is used to manage repositories of namespaces. Namespaces * are represented on disk by type libraries (`.typelib` files). * * The individual pieces of API within a type library are represented by * subclasses of [class@GIRepository.BaseInfo]. These can be found using * methods like [method@GIRepository.Repository.find_by_name] or * [method@GIRepository.Repository.get_info]. * * You are responsible for ensuring that the lifetime of the * [class@GIRepository.Repository] exceeds that of the lifetime of any of its * [class@GIRepository.BaseInfo]s. This cannot be guaranteed by using internal * references within libgirepository as that would affect performance. * * ### Discovery of type libraries * * `GIRepository` will typically look for a `girepository-1.0` directory * under the library directory used when compiling gobject-introspection. On a * standard Linux system this will end up being `/usr/lib/girepository-1.0`. * * It is possible to control the search paths programmatically, using * [method@GIRepository.Repository.prepend_search_path]. It is also possible to * modify the search paths by using the `GI_TYPELIB_PATH` environment variable. * The environment variable takes precedence over the default search path * and the [method@GIRepository.Repository.prepend_search_path] calls. * * Since: 2.80 */ /* The namespace and version corresponding to libgirepository itself, so * that we can refuse to load typelibs corresponding to the older, * incompatible version of this same library in gobject-introspection. */ #define GIREPOSITORY_TYPELIB_NAME "GIRepository" #define GIREPOSITORY_TYPELIB_VERSION "3.0" #define GIREPOSITORY_TYPELIB_FILENAME \ GIREPOSITORY_TYPELIB_NAME "-" GIREPOSITORY_TYPELIB_VERSION ".typelib" typedef struct { size_t n_interfaces; GIBaseInfo *interfaces[]; } GTypeInterfaceCache; static void gtype_interface_cache_free (gpointer data) { GTypeInterfaceCache *cache = data; for (size_t i = 0; i < cache->n_interfaces; i++) gi_base_info_unref ((GIBaseInfo*) cache->interfaces[i]); g_free (cache); } struct _GIRepository { GObject parent; GPtrArray *typelib_search_path; /* (element-type filename) (owned) */ GPtrArray *library_paths; /* (element-type filename) (owned) */ GHashTable *typelibs; /* (string) namespace -> GITypelib */ GHashTable *lazy_typelibs; /* (string) namespace-version -> GITypelib */ GHashTable *info_by_gtype; /* GType -> GIBaseInfo */ GHashTable *info_by_error_domain; /* GQuark -> GIBaseInfo */ GHashTable *interfaces_for_gtype; /* GType -> GTypeInterfaceCache */ GHashTable *unknown_gtypes; /* hashset of GType */ char **cached_shared_libraries; /* (owned) (nullable) (array zero-terminated=1) */ size_t cached_n_shared_libraries; /* length of @cached_shared_libraries, not including NULL terminator */ }; G_DEFINE_TYPE (GIRepository, gi_repository, G_TYPE_OBJECT); #ifdef G_PLATFORM_WIN32 #include static HMODULE girepository_dll = NULL; #ifdef DLL_EXPORT BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved); BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { if (fdwReason == DLL_PROCESS_ATTACH) girepository_dll = hinstDLL; return TRUE; } #endif #undef GOBJECT_INTROSPECTION_LIBDIR /* GOBJECT_INTROSPECTION_LIBDIR is used only in code called just once, * so no problem leaking this */ #define GOBJECT_INTROSPECTION_LIBDIR \ g_build_filename (g_win32_get_package_installation_directory_of_module (girepository_dll), \ "lib", \ NULL) #endif static void gi_repository_init (GIRepository *repository) { /* typelib search path */ { const char *libdir; char *typelib_dir; const char *type_lib_path_env; /* This variable is intended to take precedence over both: * - the default search path; * - all gi_repository_prepend_search_path() calls. */ type_lib_path_env = g_getenv ("GI_TYPELIB_PATH"); if (type_lib_path_env) { char **custom_dirs; custom_dirs = g_strsplit (type_lib_path_env, G_SEARCHPATH_SEPARATOR_S, 0); repository->typelib_search_path = g_ptr_array_new_take_null_terminated ((gpointer) g_steal_pointer (&custom_dirs), g_free); } else { repository->typelib_search_path = g_ptr_array_new_null_terminated (1, g_free, TRUE); } libdir = GOBJECT_INTROSPECTION_LIBDIR; typelib_dir = g_build_filename (libdir, "girepository-1.0", NULL); g_ptr_array_add (repository->typelib_search_path, g_steal_pointer (&typelib_dir)); } repository->library_paths = g_ptr_array_new_null_terminated (1, g_free, TRUE); repository->typelibs = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) gi_typelib_unref); repository->lazy_typelibs = g_hash_table_new_full (g_str_hash, g_str_equal, (GDestroyNotify) g_free, (GDestroyNotify) gi_typelib_unref); repository->info_by_gtype = g_hash_table_new_full (g_direct_hash, g_direct_equal, (GDestroyNotify) NULL, (GDestroyNotify) gi_base_info_unref); repository->info_by_error_domain = g_hash_table_new_full (g_direct_hash, g_direct_equal, (GDestroyNotify) NULL, (GDestroyNotify) gi_base_info_unref); repository->interfaces_for_gtype = g_hash_table_new_full (g_direct_hash, g_direct_equal, (GDestroyNotify) NULL, (GDestroyNotify) gtype_interface_cache_free); repository->unknown_gtypes = g_hash_table_new (NULL, NULL); } static void gi_repository_finalize (GObject *object) { GIRepository *repository = GI_REPOSITORY (object); g_hash_table_destroy (repository->typelibs); g_hash_table_destroy (repository->lazy_typelibs); g_hash_table_destroy (repository->info_by_gtype); g_hash_table_destroy (repository->info_by_error_domain); g_hash_table_destroy (repository->interfaces_for_gtype); g_hash_table_destroy (repository->unknown_gtypes); g_clear_pointer (&repository->cached_shared_libraries, g_strfreev); g_clear_pointer (&repository->library_paths, g_ptr_array_unref); g_clear_pointer (&repository->typelib_search_path, g_ptr_array_unref); (* G_OBJECT_CLASS (gi_repository_parent_class)->finalize) (G_OBJECT (repository)); } static void gi_repository_class_init (GIRepositoryClass *class) { GObjectClass *gobject_class; gobject_class = G_OBJECT_CLASS (class); gobject_class->finalize = gi_repository_finalize; } /** * gi_repository_prepend_search_path: * @repository: A #GIRepository * @directory: (type filename): directory name to prepend to the typelib * search path * * Prepends @directory to the typelib search path. * * See also: gi_repository_get_search_path(). * * Since: 2.80 */ void gi_repository_prepend_search_path (GIRepository *repository, const char *directory) { g_return_if_fail (GI_IS_REPOSITORY (repository)); g_ptr_array_insert (repository->typelib_search_path, 0, g_strdup (directory)); } /** * gi_repository_get_search_path: * @repository: A #GIRepository * @n_paths_out: (optional) (out): The number of search paths returned. * * Returns the current search path [class@GIRepository.Repository] will use when * loading typelib files. * * The list is internal to [class@GIRepository.Repository] and should not be * freed, nor should its string elements. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_paths_out. * * Returns: (element-type filename) (transfer none) (array length=n_paths_out): list of search paths, most * important first * Since: 2.80 */ const char * const * gi_repository_get_search_path (GIRepository *repository, size_t *n_paths_out) { g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); if G_UNLIKELY (!repository->typelib_search_path || !repository->typelib_search_path->pdata) { static const char * const empty_search_path[] = {NULL}; if (n_paths_out) *n_paths_out = 0; return empty_search_path; } if (n_paths_out) *n_paths_out = repository->typelib_search_path->len; return (const char * const *) repository->typelib_search_path->pdata; } /** * gi_repository_prepend_library_path: * @repository: A #GIRepository * @directory: (type filename): a single directory to scan for shared libraries * * Prepends @directory to the search path that is used to * search shared libraries referenced by imported namespaces. * * Multiple calls to this function all contribute to the final * list of paths. * * The list of paths is unique to @repository. When a typelib is loaded by the * repository, the list of paths from the @repository at that instant is used * by the typelib for loading its modules. * * If the library is not found in the directories configured * in this way, loading will fall back to the system library * path (i.e. `LD_LIBRARY_PATH` and `DT_RPATH` in ELF systems). * See the documentation of your dynamic linker for full details. * * Since: 2.80 */ void gi_repository_prepend_library_path (GIRepository *repository, const char *directory) { g_return_if_fail (GI_IS_REPOSITORY (repository)); g_ptr_array_insert (repository->library_paths, 0, g_strdup (directory)); } /** * gi_repository_get_library_path: * @repository: A #GIRepository * @n_paths_out: (optional) (out): The number of library paths returned. * * Returns the current search path [class@GIRepository.Repository] will use when * loading shared libraries referenced by imported namespaces. * * The list is internal to [class@GIRepository.Repository] and should not be * freed, nor should its string elements. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_paths_out. * * Returns: (element-type filename) (transfer none) (array length=n_paths_out): list of search paths, most * important first * Since: 2.80 */ const char * const * gi_repository_get_library_path (GIRepository *repository, size_t *n_paths_out) { g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); if G_UNLIKELY (!repository->library_paths || !repository->library_paths->pdata) { static const char * const empty_search_path[] = {NULL}; if (n_paths_out) *n_paths_out = 0; return empty_search_path; } if (n_paths_out) *n_paths_out = repository->library_paths->len; return (const char * const *) repository->library_paths->pdata; } static char * build_typelib_key (const char *name, const char *source) { GString *str = g_string_new (name); g_string_append_c (str, '\0'); g_string_append (str, source); return g_string_free (str, FALSE); } /* Note: Returns %NULL (not an empty %NULL-terminated array) if there are no * dependencies. */ static char ** get_typelib_dependencies (GITypelib *typelib) { Header *header; const char *dependencies_glob; header = (Header *)typelib->data; if (header->dependencies == 0) return NULL; dependencies_glob = gi_typelib_get_string (typelib, header->dependencies); return g_strsplit (dependencies_glob, "|", 0); } static GITypelib * check_version_conflict (GITypelib *typelib, const char *namespace, const char *expected_version, char **version_conflict) { Header *header; const char *loaded_version; if (expected_version == NULL) { if (version_conflict) *version_conflict = NULL; return typelib; } header = (Header*)typelib->data; loaded_version = gi_typelib_get_string (typelib, header->nsversion); g_assert (loaded_version != NULL); if (strcmp (expected_version, loaded_version) != 0) { if (version_conflict) *version_conflict = (char*)loaded_version; return NULL; } if (version_conflict) *version_conflict = NULL; return typelib; } static GITypelib * get_registered_status (GIRepository *repository, const char *namespace, const char *version, gboolean allow_lazy, gboolean *lazy_status, char **version_conflict) { GITypelib *typelib; if (lazy_status) *lazy_status = FALSE; typelib = g_hash_table_lookup (repository->typelibs, namespace); if (typelib) return check_version_conflict (typelib, namespace, version, version_conflict); typelib = g_hash_table_lookup (repository->lazy_typelibs, namespace); if (!typelib) return NULL; if (lazy_status) *lazy_status = TRUE; if (!allow_lazy) return NULL; return check_version_conflict (typelib, namespace, version, version_conflict); } static GITypelib * get_registered (GIRepository *repository, const char *namespace, const char *version) { return get_registered_status (repository, namespace, version, TRUE, NULL, NULL); } static gboolean load_dependencies_recurse (GIRepository *repository, GITypelib *typelib, GError **error) { char **dependencies; dependencies = get_typelib_dependencies (typelib); if (dependencies != NULL) { int i; for (i = 0; dependencies[i]; i++) { char *dependency = dependencies[i]; const char *last_dash; char *dependency_namespace; const char *dependency_version; last_dash = strrchr (dependency, '-'); dependency_namespace = g_strndup (dependency, last_dash - dependency); dependency_version = last_dash+1; if (!gi_repository_require (repository, dependency_namespace, dependency_version, 0, error)) { g_free (dependency_namespace); g_strfreev (dependencies); return FALSE; } g_free (dependency_namespace); } g_strfreev (dependencies); } return TRUE; } static const char * register_internal (GIRepository *repository, const char *source, gboolean lazy, GITypelib *typelib, GError **error) { Header *header; const char *namespace; g_return_val_if_fail (typelib != NULL, FALSE); header = (Header *)typelib->data; g_return_val_if_fail (header != NULL, FALSE); namespace = gi_typelib_get_string (typelib, header->namespace); if (lazy) { g_assert (!g_hash_table_lookup (repository->lazy_typelibs, namespace)); g_hash_table_insert (repository->lazy_typelibs, build_typelib_key (namespace, source), gi_typelib_ref (typelib)); } else { gpointer value; char *key; /* First, try loading all the dependencies */ if (!load_dependencies_recurse (repository, typelib, error)) return NULL; /* Check if we are transitioning from lazily loaded state */ if (g_hash_table_lookup_extended (repository->lazy_typelibs, namespace, (gpointer)&key, &value)) g_hash_table_remove (repository->lazy_typelibs, key); else key = build_typelib_key (namespace, source); g_hash_table_insert (repository->typelibs, g_steal_pointer (&key), gi_typelib_ref (typelib)); } /* These types might be resolved now, clear the cache */ g_hash_table_remove_all (repository->unknown_gtypes); return namespace; } /** * gi_repository_get_immediate_dependencies: * @repository: A #GIRepository * @namespace_: Namespace of interest * @n_dependencies_out: (optional) (out): Return location for the number of * dependencies * * Return an array of the immediate versioned dependencies for @namespace_. * Returned strings are of the form `namespace-version`. * * Note: @namespace_ must have already been loaded using a function * such as [method@GIRepository.Repository.require] before calling this * function. * * To get the transitive closure of dependencies for @namespace_, use * [method@GIRepository.Repository.get_dependencies]. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_dependencies_out. * * Returns: (transfer full) (array length=n_dependencies_out): String array of * immediate versioned dependencies * Since: 2.80 */ char ** gi_repository_get_immediate_dependencies (GIRepository *repository, const char *namespace, size_t *n_dependencies_out) { GITypelib *typelib; char **deps; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); /* Ensure we always return a non-%NULL vector. */ deps = get_typelib_dependencies (typelib); if (deps == NULL) deps = g_strsplit ("", "|", 0); if (n_dependencies_out != NULL) *n_dependencies_out = g_strv_length (deps); return deps; } /* Load the transitive closure of dependency namespace-version strings for the * given @typelib. @repository must be non-%NULL. @transitive_dependencies must * be a pre-existing GHashTable set for storing the * dependencies. */ static void get_typelib_dependencies_transitive (GIRepository *repository, GITypelib *typelib, GHashTable *transitive_dependencies) { char **immediate_dependencies; immediate_dependencies = get_typelib_dependencies (typelib); for (size_t i = 0; immediate_dependencies != NULL && immediate_dependencies[i]; i++) { char *dependency; const char *last_dash; char *dependency_namespace; dependency = immediate_dependencies[i]; /* Steal from the strv. */ g_hash_table_add (transitive_dependencies, dependency); immediate_dependencies[i] = NULL; /* Recurse for this namespace. */ last_dash = strrchr (dependency, '-'); dependency_namespace = g_strndup (dependency, last_dash - dependency); typelib = get_registered (repository, dependency_namespace, NULL); g_return_if_fail (typelib != NULL); get_typelib_dependencies_transitive (repository, typelib, transitive_dependencies); g_free (dependency_namespace); } g_free (immediate_dependencies); } /** * gi_repository_get_dependencies: * @repository: A #GIRepository * @namespace_: Namespace of interest * @n_dependencies_out: (optional) (out): Return location for the number of * dependencies * * Retrieves all (transitive) versioned dependencies for * @namespace_. * * The returned strings are of the form `namespace-version`. * * Note: @namespace_ must have already been loaded using a function * such as [method@GIRepository.Repository.require] before calling this * function. * * To get only the immediate dependencies for @namespace_, use * [method@GIRepository.Repository.get_immediate_dependencies]. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_dependencies_out. * * Returns: (transfer full) (array length=n_dependencies_out): String array of * all versioned dependencies * Since: 2.80 */ char ** gi_repository_get_dependencies (GIRepository *repository, const char *namespace, size_t *n_dependencies_out) { GITypelib *typelib; GHashTable *transitive_dependencies; /* set of owned utf8 */ GHashTableIter iter; char *dependency; GPtrArray *out; /* owned utf8 elements */ g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); /* Load the dependencies. */ transitive_dependencies = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL); get_typelib_dependencies_transitive (repository, typelib, transitive_dependencies); /* Convert to a string array. */ out = g_ptr_array_new_null_terminated (g_hash_table_size (transitive_dependencies), g_free, TRUE); g_hash_table_iter_init (&iter, transitive_dependencies); while (g_hash_table_iter_next (&iter, (gpointer) &dependency, NULL)) { g_ptr_array_add (out, dependency); g_hash_table_iter_steal (&iter); } g_hash_table_unref (transitive_dependencies); if (n_dependencies_out != NULL) *n_dependencies_out = out->len; return (char **) g_ptr_array_free (out, FALSE); } /** * gi_repository_load_typelib: * @repository: A #GIRepository * @typelib: (transfer none): the typelib to load * @flags: flags affecting the loading operation * @error: return location for a [type@GLib.Error], or `NULL` * * Load the given @typelib into the repository. * * Returns: namespace of the loaded typelib * Since: 2.80 */ const char * gi_repository_load_typelib (GIRepository *repository, GITypelib *typelib, GIRepositoryLoadFlags flags, GError **error) { Header *header; const char *namespace; const char *nsversion; gboolean allow_lazy = flags & GI_REPOSITORY_LOAD_FLAG_LAZY; gboolean is_lazy; char *version_conflict; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); header = (Header *) typelib->data; namespace = gi_typelib_get_string (typelib, header->namespace); nsversion = gi_typelib_get_string (typelib, header->nsversion); if (get_registered_status (repository, namespace, nsversion, allow_lazy, &is_lazy, &version_conflict)) { if (version_conflict != NULL) { g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_NAMESPACE_VERSION_CONFLICT, "Attempting to load namespace '%s', version '%s', but '%s' is already loaded", namespace, nsversion, version_conflict); return NULL; } return namespace; } return register_internal (repository, "", allow_lazy, typelib, error); } /** * gi_repository_is_registered: * @repository: A #GIRepository * @namespace_: Namespace of interest * @version: (nullable): Required version, may be `NULL` for latest * * Check whether a particular namespace (and optionally, a specific * version thereof) is currently loaded. * * This function is likely to only be useful in unusual circumstances; in order * to act upon metadata in the namespace, you should call * [method@GIRepository.Repository.require] instead which will ensure the * namespace is loaded, and return as quickly as this function will if it has * already been loaded. * * Returns: `TRUE` if namespace-version is loaded, `FALSE` otherwise * Since: 2.80 */ gboolean gi_repository_is_registered (GIRepository *repository, const char *namespace, const char *version) { g_return_val_if_fail (GI_IS_REPOSITORY (repository), FALSE); return get_registered (repository, namespace, version) != NULL; } /** * gi_repository_new: * * Create a new [class@GIRepository.Repository]. * * Returns: (transfer full): a new [class@GIRepository.Repository] * Since: 2.80 */ GIRepository * gi_repository_new (void) { return g_object_new (GI_TYPE_REPOSITORY, NULL); } /** * gi_repository_get_n_infos: * @repository: A #GIRepository * @namespace_: Namespace to inspect * * This function returns the number of metadata entries in * given namespace @namespace_. * * The namespace must have already been loaded before calling this function. * * Returns: number of metadata entries * Since: 2.80 */ unsigned int gi_repository_get_n_infos (GIRepository *repository, const char *namespace) { GITypelib *typelib; unsigned int n_interfaces = 0; g_return_val_if_fail (GI_IS_REPOSITORY (repository), -1); g_return_val_if_fail (namespace != NULL, -1); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, -1); n_interfaces = ((Header *)typelib->data)->n_local_entries; return n_interfaces; } /** * gi_repository_get_info: * @repository: A #GIRepository * @namespace_: Namespace to inspect * @idx: 0-based offset into namespace metadata for entry * * This function returns a particular metadata entry in the * given namespace @namespace_. * * The namespace must have already been loaded before calling this function. * See [method@GIRepository.Repository.get_n_infos] to find the maximum number * of entries. It is an error to pass an invalid @idx to this function. * * Returns: (transfer full) (not nullable): [class@GIRepository.BaseInfo] * containing metadata * Since: 2.80 */ GIBaseInfo * gi_repository_get_info (GIRepository *repository, const char *namespace, unsigned int idx) { GITypelib *typelib; DirEntry *entry; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); g_return_val_if_fail (idx < G_MAXUINT16, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); entry = gi_typelib_get_dir_entry (typelib, idx + 1); g_return_val_if_fail (entry != NULL, NULL); return gi_info_new_full (gi_typelib_blob_type_to_info_type (entry->blob_type), repository, NULL, typelib, entry->offset); } typedef struct { const char *gtype_name; GITypelib *result_typelib; } FindByGTypeData; static DirEntry * find_by_gtype (GHashTable *table, FindByGTypeData *data, gboolean check_prefix) { GHashTableIter iter; gpointer key, value; DirEntry *ret; g_hash_table_iter_init (&iter, table); while (g_hash_table_iter_next (&iter, &key, &value)) { GITypelib *typelib = (GITypelib*)value; if (check_prefix) { if (!gi_typelib_matches_gtype_name_prefix (typelib, data->gtype_name)) continue; } ret = gi_typelib_get_dir_entry_by_gtype_name (typelib, data->gtype_name); if (ret) { data->result_typelib = typelib; return ret; } } return NULL; } /** * gi_repository_find_by_gtype: * @repository: A #GIRepository * @gtype: [type@GObject.Type] to search for * * Searches all loaded namespaces for a particular [type@GObject.Type]. * * Note that in order to locate the metadata, the namespace corresponding to * the type must first have been loaded. There is currently no * mechanism for determining the namespace which corresponds to an * arbitrary [type@GObject.Type] — thus, this function will operate most * reliably when you know the [type@GObject.Type] is from a loaded namespace. * * Returns: (transfer full) (nullable): [class@GIRepository.BaseInfo] * representing metadata about @type, or `NULL` if none found * Since: 2.80 */ GIBaseInfo * gi_repository_find_by_gtype (GIRepository *repository, GType gtype) { FindByGTypeData data; GIBaseInfo *cached; DirEntry *entry; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (gtype != G_TYPE_INVALID, NULL); cached = g_hash_table_lookup (repository->info_by_gtype, (gpointer)gtype); if (cached != NULL) return gi_base_info_ref (cached); if (g_hash_table_contains (repository->unknown_gtypes, (gpointer)gtype)) return NULL; data.gtype_name = g_type_name (gtype); data.result_typelib = NULL; /* Inside each typelib, we include the "C prefix" which acts as * a namespace mechanism. For GtkTreeView, the C prefix is Gtk. * Given the assumption that GTypes for a library also use the * C prefix, we know we can skip examining a typelib if our * target type does not have this typelib's C prefix. Use this * assumption as our first attempt at locating the DirEntry. */ entry = find_by_gtype (repository->typelibs, &data, TRUE); if (entry == NULL) entry = find_by_gtype (repository->lazy_typelibs, &data, TRUE); /* Not ever class library necessarily specifies a correct c_prefix, * so take a second pass. This time we will try a global lookup, * ignoring prefixes. * See http://bugzilla.gnome.org/show_bug.cgi?id=564016 */ if (entry == NULL) entry = find_by_gtype (repository->typelibs, &data, FALSE); if (entry == NULL) entry = find_by_gtype (repository->lazy_typelibs, &data, FALSE); if (entry != NULL) { cached = gi_info_new_full (gi_typelib_blob_type_to_info_type (entry->blob_type), repository, NULL, data.result_typelib, entry->offset); g_hash_table_insert (repository->info_by_gtype, (gpointer) gtype, gi_base_info_ref (cached)); return cached; } else { g_hash_table_add (repository->unknown_gtypes, (gpointer) gtype); return NULL; } } /** * gi_repository_find_by_name: * @repository: A #GIRepository * @namespace_: Namespace which will be searched * @name: Entry name to find * * Searches for a particular entry in a namespace. * * Before calling this function for a particular namespace, you must call * [method@GIRepository.Repository.require] to load the namespace, or otherwise * ensure the namespace has already been loaded. * * Returns: (transfer full) (nullable): [class@GIRepository.BaseInfo] * representing metadata about @name, or `NULL` if none found * Since: 2.80 */ GIBaseInfo * gi_repository_find_by_name (GIRepository *repository, const char *namespace, const char *name) { GITypelib *typelib; DirEntry *entry; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); entry = gi_typelib_get_dir_entry_by_name (typelib, name); if (entry == NULL) return NULL; return gi_info_new_full (gi_typelib_blob_type_to_info_type (entry->blob_type), repository, NULL, typelib, entry->offset); } typedef struct { GIRepository *repository; GQuark domain; GITypelib *result_typelib; DirEntry *result; } FindByErrorDomainData; static void find_by_error_domain_foreach (gpointer key, gpointer value, gpointer datap) { GITypelib *typelib = (GITypelib*)value; FindByErrorDomainData *data = datap; if (data->result != NULL) return; data->result = gi_typelib_get_dir_entry_by_error_domain (typelib, data->domain); if (data->result) data->result_typelib = typelib; } /** * gi_repository_find_by_error_domain: * @repository: A #GIRepository * @domain: a [type@GLib.Error] domain * * Searches for the enum type corresponding to the given [type@GLib.Error] * domain. * * Before calling this function for a particular namespace, you must call * [method@GIRepository.Repository.require] to load the namespace, or otherwise * ensure the namespace has already been loaded. * * Returns: (transfer full) (nullable): [class@GIRepository.EnumInfo] * representing metadata about @domain’s enum type, or `NULL` if none found * Since: 2.80 */ GIEnumInfo * gi_repository_find_by_error_domain (GIRepository *repository, GQuark domain) { FindByErrorDomainData data; GIEnumInfo *cached; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); cached = g_hash_table_lookup (repository->info_by_error_domain, GUINT_TO_POINTER (domain)); if (cached != NULL) return (GIEnumInfo *) gi_base_info_ref ((GIBaseInfo *)cached); data.repository = repository; data.domain = domain; data.result_typelib = NULL; data.result = NULL; g_hash_table_foreach (repository->typelibs, find_by_error_domain_foreach, &data); if (data.result == NULL) g_hash_table_foreach (repository->lazy_typelibs, find_by_error_domain_foreach, &data); if (data.result != NULL) { cached = (GIEnumInfo *) gi_info_new_full (gi_typelib_blob_type_to_info_type (data.result->blob_type), repository, NULL, data.result_typelib, data.result->offset); g_hash_table_insert (repository->info_by_error_domain, GUINT_TO_POINTER (domain), gi_base_info_ref ((GIBaseInfo *) cached)); return cached; } return NULL; } /** * gi_repository_get_object_gtype_interfaces: * @repository: a #GIRepository * @gtype: a [type@GObject.Type] whose fundamental type is `G_TYPE_OBJECT` * @n_interfaces_out: (out): Number of interfaces * @interfaces_out: (out) (transfer none) (array length=n_interfaces_out): Interfaces for @gtype * * Look up the implemented interfaces for @gtype. * * This function cannot fail per se; but for a totally ‘unknown’ * [type@GObject.Type], it may return 0 implemented interfaces. * * The semantics of this function are designed for a dynamic binding, * where in certain cases (such as a function which returns an * interface which may have ‘hidden’ implementation classes), not all * data may be statically known, and will have to be determined from * the [type@GObject.Type] of the object. An example is * [func@Gio.File.new_for_path] returning a concrete class of * `GLocalFile`, which is a [type@GObject.Type] we see at runtime, but * not statically. * * Since: 2.80 */ void gi_repository_get_object_gtype_interfaces (GIRepository *repository, GType gtype, size_t *n_interfaces_out, GIInterfaceInfo ***interfaces_out) { GTypeInterfaceCache *cache; g_return_if_fail (GI_IS_REPOSITORY (repository)); g_return_if_fail (g_type_fundamental (gtype) == G_TYPE_OBJECT); cache = g_hash_table_lookup (repository->interfaces_for_gtype, (void *) gtype); if (cache == NULL) { GType *interfaces; unsigned int i; unsigned int n_interfaces; GList *interface_infos = NULL, *iter; interfaces = g_type_interfaces (gtype, &n_interfaces); for (i = 0; i < n_interfaces; i++) { GIBaseInfo *base_info; base_info = gi_repository_find_by_gtype (repository, interfaces[i]); if (base_info == NULL) continue; if (gi_base_info_get_info_type (base_info) != GI_INFO_TYPE_INTERFACE) { /* FIXME - could this really happen? */ gi_base_info_unref (base_info); continue; } if (!g_list_find (interface_infos, base_info)) interface_infos = g_list_prepend (interface_infos, base_info); } cache = g_malloc (sizeof (GTypeInterfaceCache) + sizeof (GIBaseInfo*) * g_list_length (interface_infos)); cache->n_interfaces = g_list_length (interface_infos); for (iter = interface_infos, i = 0; iter; iter = iter->next, i++) cache->interfaces[i] = iter->data; g_list_free (interface_infos); g_hash_table_insert (repository->interfaces_for_gtype, (gpointer) gtype, cache); g_free (interfaces); } *n_interfaces_out = cache->n_interfaces; *interfaces_out = (GIInterfaceInfo**)&cache->interfaces[0]; } static void collect_namespaces (gpointer key, gpointer value, gpointer data) { GList **list = data; *list = g_list_append (*list, key); } /** * gi_repository_get_loaded_namespaces: * @repository: A #GIRepository * @n_namespaces_out: (optional) (out): Return location for the number of * namespaces * * Return the list of currently loaded namespaces. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_namespaces_out. * * Returns: (element-type utf8) (transfer full) (array length=n_namespaces_out): * list of namespaces * Since: 2.80 */ char ** gi_repository_get_loaded_namespaces (GIRepository *repository, size_t *n_namespaces_out) { GList *l, *list = NULL; char **names; size_t i; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_hash_table_foreach (repository->typelibs, collect_namespaces, &list); g_hash_table_foreach (repository->lazy_typelibs, collect_namespaces, &list); names = g_malloc0 (sizeof (char *) * (g_list_length (list) + 1)); i = 0; for (l = list; l; l = l->next) names[i++] = g_strdup (l->data); g_list_free (list); if (n_namespaces_out != NULL) *n_namespaces_out = i; return names; } /** * gi_repository_get_version: * @repository: A #GIRepository * @namespace_: Namespace to inspect * * This function returns the loaded version associated with the given * namespace @namespace_. * * Note: The namespace must have already been loaded using a function * such as [method@GIRepository.Repository.require] before calling this * function. * * Returns: Loaded version * Since: 2.80 */ const char * gi_repository_get_version (GIRepository *repository, const char *namespace) { GITypelib *typelib; Header *header; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); header = (Header *) typelib->data; return gi_typelib_get_string (typelib, header->nsversion); } /** * gi_repository_get_shared_libraries: * @repository: A #GIRepository * @namespace_: Namespace to inspect * @out_n_elements: (out) (optional): Return location for the number of elements * in the returned array * * This function returns an array of paths to the * shared C libraries associated with the given namespace @namespace_. * * There may be no shared library path associated, in which case this * function will return `NULL`. * * Note: The namespace must have already been loaded using a function * such as [method@GIRepository.Repository.require] before calling this * function. * * The list is internal to [class@GIRepository.Repository] and should not be * freed, nor should its string elements. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @out_n_elements. * * Returns: (nullable) (array length=out_n_elements) (transfer none): Array of * paths to shared libraries, or `NULL` if none are associated * Since: 2.80 */ const char * const * gi_repository_get_shared_libraries (GIRepository *repository, const char *namespace, size_t *out_n_elements) { GITypelib *typelib; Header *header; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, NULL); typelib = get_registered (repository, namespace, NULL); g_return_val_if_fail (typelib != NULL, NULL); header = (Header *) typelib->data; if (!header->shared_library) { if (out_n_elements != NULL) *out_n_elements = 0; return NULL; } /* Populate the cache. */ if (repository->cached_shared_libraries == NULL) { const char *comma_separated = gi_typelib_get_string (typelib, header->shared_library); if (comma_separated != NULL && *comma_separated != '\0') { repository->cached_shared_libraries = g_strsplit (comma_separated, ",", -1); repository->cached_n_shared_libraries = g_strv_length (repository->cached_shared_libraries); } } if (out_n_elements != NULL) *out_n_elements = repository->cached_n_shared_libraries; return (const char * const *) repository->cached_shared_libraries; } /** * gi_repository_get_c_prefix: * @repository: A #GIRepository * @namespace_: Namespace to inspect * * This function returns the ‘C prefix’, or the C level namespace * associated with the given introspection namespace. * * Each C symbol starts with this prefix, as well each [type@GObject.Type] in * the library. * * Note: The namespace must have already been loaded using a function * such as [method@GIRepository.Repository.require] before calling this * function. * * Returns: (nullable): C namespace prefix, or `NULL` if none associated * Since: 2.80 */ const char * gi_repository_get_c_prefix (GIRepository *repository, const char *namespace_) { GITypelib *typelib; Header *header; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace_ != NULL, NULL); typelib = get_registered (repository, namespace_, NULL); g_return_val_if_fail (typelib != NULL, NULL); header = (Header *) typelib->data; if (header->c_prefix) return gi_typelib_get_string (typelib, header->c_prefix); else return NULL; } /** * gi_repository_get_typelib_path: * @repository: A #GIRepository * @namespace_: GI namespace to use, e.g. `Gtk` * * If namespace @namespace_ is loaded, return the full path to the * .typelib file it was loaded from. * * If the typelib for namespace @namespace_ was included in a shared library, * return the special string ``. * * Returns: (type filename) (nullable): Filesystem path (or ``) if * successful, `NULL` if namespace is not loaded * Since: 2.80 */ const char * gi_repository_get_typelib_path (GIRepository *repository, const char *namespace) { gpointer orig_key, value; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); if (!g_hash_table_lookup_extended (repository->typelibs, namespace, &orig_key, &value)) { if (!g_hash_table_lookup_extended (repository->lazy_typelibs, namespace, &orig_key, &value)) return NULL; } return ((char*)orig_key) + strlen ((char *) orig_key) + 1; } /* This simple search function looks for a specified namespace-version; it's faster than the full directory listing required for latest version. */ static GMappedFile * find_namespace_version (const char *namespace, const char *version, const char * const *search_paths, size_t n_search_paths, char **path_ret) { GError *error = NULL; GMappedFile *mfile = NULL; char *fname; if (g_str_equal (namespace, GIREPOSITORY_TYPELIB_NAME) && !g_str_equal (version, GIREPOSITORY_TYPELIB_VERSION)) { g_debug ("Ignoring %s-%s.typelib because this libgirepository " "corresponds to %s-%s", namespace, version, namespace, GIREPOSITORY_TYPELIB_VERSION); return NULL; } fname = g_strdup_printf ("%s-%s.typelib", namespace, version); for (size_t i = 0; i < n_search_paths; ++i) { char *path = g_build_filename (search_paths[i], fname, NULL); mfile = g_mapped_file_new (path, FALSE, &error); if (error) { g_free (path); g_clear_error (&error); continue; } *path_ret = path; break; } g_free (fname); return mfile; } static gboolean parse_version (const char *version, int *major, int *minor) { const char *dot; char *end; *major = strtol (version, &end, 10); dot = strchr (version, '.'); if (dot == NULL) { *minor = 0; return TRUE; } if (dot != end) return FALSE; *minor = strtol (dot+1, &end, 10); if (end != (version + strlen (version))) return FALSE; return TRUE; } static int compare_version (const char *v1, const char *v2) { gboolean success; int v1_major, v1_minor; int v2_major, v2_minor; success = parse_version (v1, &v1_major, &v1_minor); g_assert (success); success = parse_version (v2, &v2_major, &v2_minor); g_assert (success); /* Avoid a compiler warning about `success` being unused with G_DISABLE_ASSERT */ (void) success; if (v1_major > v2_major) return 1; else if (v2_major > v1_major) return -1; else if (v1_minor > v2_minor) return 1; else if (v2_minor > v1_minor) return -1; return 0; } struct NamespaceVersionCandidadate { GMappedFile *mfile; int path_index; char *path; char *version; }; static int compare_candidate_reverse (struct NamespaceVersionCandidadate *c1, struct NamespaceVersionCandidadate *c2) { int result = compare_version (c1->version, c2->version); /* First, check the version */ if (result > 0) return -1; else if (result < 0) return 1; else { /* Now check the path index, which says how early in the search path * we found it. This ensures that of equal version targets, we * pick the earlier one. */ if (c1->path_index == c2->path_index) return 0; else if (c1->path_index > c2->path_index) return 1; else return -1; } } static void free_candidate (struct NamespaceVersionCandidadate *candidate) { g_mapped_file_unref (candidate->mfile); g_free (candidate->path); g_free (candidate->version); g_slice_free (struct NamespaceVersionCandidadate, candidate); } static GSList * enumerate_namespace_versions (const char *namespace, const char * const *search_paths, size_t n_search_paths) { GSList *candidates = NULL; GHashTable *found_versions = g_hash_table_new (g_str_hash, g_str_equal); char *namespace_dash; char *namespace_typelib; GError *error = NULL; int index; namespace_dash = g_strdup_printf ("%s-", namespace); namespace_typelib = g_strdup_printf ("%s.typelib", namespace); index = 0; for (size_t i = 0; i < n_search_paths; ++i) { GDir *dir; const char *dirname; const char *entry; dirname = search_paths[i]; dir = g_dir_open (dirname, 0, NULL); if (dir == NULL) continue; while ((entry = g_dir_read_name (dir)) != NULL) { GMappedFile *mfile; char *path, *version; struct NamespaceVersionCandidadate *candidate; if (!g_str_has_suffix (entry, ".typelib")) continue; if (g_str_has_prefix (entry, namespace_dash)) { const char *last_dash; const char *name_end; int major, minor; if (g_str_equal (namespace, GIREPOSITORY_TYPELIB_NAME) && !g_str_equal (entry, GIREPOSITORY_TYPELIB_FILENAME)) { g_debug ("Ignoring %s because this libgirepository " "corresponds to %s", entry, GIREPOSITORY_TYPELIB_FILENAME); continue; } name_end = strrchr (entry, '.'); last_dash = strrchr (entry, '-'); version = g_strndup (last_dash+1, name_end-(last_dash+1)); if (!parse_version (version, &major, &minor)) { g_free (version); continue; } } else continue; if (g_hash_table_lookup (found_versions, version) != NULL) { g_free (version); continue; } path = g_build_filename (dirname, entry, NULL); mfile = g_mapped_file_new (path, FALSE, &error); if (mfile == NULL) { g_free (path); g_free (version); g_clear_error (&error); continue; } candidate = g_slice_new0 (struct NamespaceVersionCandidadate); candidate->mfile = mfile; candidate->path_index = index; candidate->path = path; candidate->version = version; candidates = g_slist_prepend (candidates, candidate); g_hash_table_add (found_versions, version); } g_dir_close (dir); index++; } g_free (namespace_dash); g_free (namespace_typelib); g_hash_table_destroy (found_versions); return candidates; } static GMappedFile * find_namespace_latest (const char *namespace, const char * const *search_paths, size_t n_search_paths, char **version_ret, char **path_ret) { GSList *candidates; GMappedFile *result = NULL; *version_ret = NULL; *path_ret = NULL; candidates = enumerate_namespace_versions (namespace, search_paths, n_search_paths); if (candidates != NULL) { struct NamespaceVersionCandidadate *elected; candidates = g_slist_sort (candidates, (GCompareFunc) compare_candidate_reverse); elected = (struct NamespaceVersionCandidadate *) candidates->data; /* Remove the elected one so we don't try to free its contents */ candidates = g_slist_delete_link (candidates, candidates); result = elected->mfile; *path_ret = elected->path; *version_ret = elected->version; g_slice_free (struct NamespaceVersionCandidadate, elected); /* just free the container */ g_slist_foreach (candidates, (GFunc) (void *) free_candidate, NULL); g_slist_free (candidates); } return result; } /** * gi_repository_enumerate_versions: * @repository: A #GIRepository * @namespace_: GI namespace, e.g. `Gtk` * @n_versions_out: (optional) (out): The number of versions returned. * * Obtain an unordered list of versions (either currently loaded or * available) for @namespace_ in this @repository. * * The list is guaranteed to be `NULL` terminated. The `NULL` terminator is not * counted in @n_versions_out. * * Returns: (element-type utf8) (transfer full) (array length=n_versions_out): the array of versions. * Since: 2.80 */ char ** gi_repository_enumerate_versions (GIRepository *repository, const char *namespace_, size_t *n_versions_out) { GPtrArray *versions; GSList *candidates, *link; const char *loaded_version; char **ret; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); candidates = enumerate_namespace_versions (namespace_, (const char * const *) repository->typelib_search_path->pdata, repository->typelib_search_path->len); if (!candidates) { if (n_versions_out) *n_versions_out = 0; return g_strdupv ((char *[]) {NULL}); } versions = g_ptr_array_new_null_terminated (1, g_free, TRUE); for (link = candidates; link; link = link->next) { struct NamespaceVersionCandidadate *candidate = link->data; g_ptr_array_add (versions, g_steal_pointer (&candidate->version)); free_candidate (candidate); } g_slist_free (candidates); /* The currently loaded version of a namespace is also part of the * available versions, as it could have been loaded using * require_private(). */ if (gi_repository_is_registered (repository, namespace_, NULL)) { loaded_version = gi_repository_get_version (repository, namespace_); if (loaded_version && !g_ptr_array_find_with_equal_func (versions, loaded_version, g_str_equal, NULL)) g_ptr_array_add (versions, g_strdup (loaded_version)); } ret = (char **) g_ptr_array_steal (versions, n_versions_out); g_ptr_array_unref (g_steal_pointer (&versions)); return ret; } static GITypelib * require_internal (GIRepository *repository, const char *namespace, const char *version, GIRepositoryLoadFlags flags, const char * const *search_paths, size_t n_search_paths, GError **error) { GMappedFile *mfile; GITypelib *ret = NULL; Header *header; GITypelib *typelib = NULL; GITypelib *typelib_owned = NULL; const char *typelib_namespace, *typelib_version; gboolean allow_lazy = (flags & GI_REPOSITORY_LOAD_FLAG_LAZY) > 0; gboolean is_lazy; char *version_conflict = NULL; char *path = NULL; char *tmp_version = NULL; g_return_val_if_fail (GI_IS_REPOSITORY (repository), NULL); g_return_val_if_fail (namespace != NULL, FALSE); typelib = get_registered_status (repository, namespace, version, allow_lazy, &is_lazy, &version_conflict); if (typelib) return typelib; if (version_conflict != NULL) { g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_NAMESPACE_VERSION_CONFLICT, "Requiring namespace '%s' version '%s', but '%s' is already loaded", namespace, version, version_conflict); return NULL; } if (version != NULL) { mfile = find_namespace_version (namespace, version, search_paths, n_search_paths, &path); tmp_version = g_strdup (version); } else { mfile = find_namespace_latest (namespace, search_paths, n_search_paths, &tmp_version, &path); } if (mfile == NULL) { if (version != NULL) g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_TYPELIB_NOT_FOUND, "Typelib file for namespace '%s', version '%s' not found", namespace, version); else g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_TYPELIB_NOT_FOUND, "Typelib file for namespace '%s' (any version) not found", namespace); goto out; } { GError *temp_error = NULL; GBytes *bytes = NULL; bytes = g_mapped_file_get_bytes (mfile); typelib_owned = typelib = gi_typelib_new_from_bytes (bytes, &temp_error); g_bytes_unref (bytes); g_clear_pointer (&mfile, g_mapped_file_unref); if (!typelib) { g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_TYPELIB_NOT_FOUND, "Failed to load typelib file '%s' for namespace '%s': %s", path, namespace, temp_error->message); g_clear_error (&temp_error); goto out; } typelib->library_paths = (repository->library_paths != NULL) ? g_ptr_array_ref (repository->library_paths) : NULL; } header = (Header *) typelib->data; typelib_namespace = gi_typelib_get_string (typelib, header->namespace); typelib_version = gi_typelib_get_string (typelib, header->nsversion); if (strcmp (typelib_namespace, namespace) != 0) { g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_NAMESPACE_MISMATCH, "Typelib file %s for namespace '%s' contains " "namespace '%s' which doesn't match the file name", path, namespace, typelib_namespace); goto out; } if (version != NULL && strcmp (typelib_version, version) != 0) { g_set_error (error, GI_REPOSITORY_ERROR, GI_REPOSITORY_ERROR_NAMESPACE_MISMATCH, "Typelib file %s for namespace '%s' contains " "version '%s' which doesn't match the expected version '%s'", path, namespace, typelib_version, version); goto out; } if (!register_internal (repository, path, allow_lazy, typelib, error)) goto out; ret = typelib; out: g_clear_pointer (&typelib_owned, gi_typelib_unref); g_free (tmp_version); g_free (path); return ret; } /** * gi_repository_require: * @repository: A #GIRepository * @namespace_: GI namespace to use, e.g. `Gtk` * @version: (nullable): Version of namespace, may be `NULL` for latest * @flags: Set of [flags@GIRepository.RepositoryLoadFlags], may be 0 * @error: a [type@GLib.Error]. * * Force the namespace @namespace_ to be loaded if it isn’t already. * * If @namespace_ is not loaded, this function will search for a * `.typelib` file using the repository search path. In addition, a * version @version of namespace may be specified. If @version is * not specified, the latest will be used. * * Returns: (transfer none): a pointer to the [type@GIRepository.Typelib] if * successful, `NULL` otherwise * Since: 2.80 */ GITypelib * gi_repository_require (GIRepository *repository, const char *namespace, const char *version, GIRepositoryLoadFlags flags, GError **error) { GITypelib *typelib; typelib = require_internal (repository, namespace, version, flags, (const char * const *) repository->typelib_search_path->pdata, repository->typelib_search_path->len, error); return typelib; } /** * gi_repository_require_private: * @repository: A #GIRepository * @typelib_dir: (type filename): Private directory where to find the requested * typelib * @namespace_: GI namespace to use, e.g. `Gtk` * @version: (nullable): Version of namespace, may be `NULL` for latest * @flags: Set of [flags@GIRepository.RepositoryLoadFlags], may be 0 * @error: a [type@GLib.Error]. * * Force the namespace @namespace_ to be loaded if it isn’t already. * * If @namespace_ is not loaded, this function will search for a * `.typelib` file within the private directory only. In addition, a * version @version of namespace should be specified. If @version is * not specified, the latest will be used. * * Returns: (transfer none): a pointer to the [type@GIRepository.Typelib] if * successful, `NULL` otherwise * Since: 2.80 */ GITypelib * gi_repository_require_private (GIRepository *repository, const char *typelib_dir, const char *namespace, const char *version, GIRepositoryLoadFlags flags, GError **error) { const char * const search_path[] = { typelib_dir, NULL }; return require_internal (repository, namespace, version, flags, search_path, 1, error); } static gboolean gi_repository_introspect_cb (const char *option_name, const char *value, gpointer data, GError **error) { GError *tmp_error = NULL; char **args; args = g_strsplit (value, ",", 2); if (!gi_repository_dump (args[0], args[1], &tmp_error)) { g_error ("Failed to extract GType data: %s", tmp_error->message); exit (1); } exit (0); } static const GOptionEntry introspection_args[] = { { "introspect-dump", 0, G_OPTION_FLAG_HIDDEN, G_OPTION_ARG_CALLBACK, gi_repository_introspect_cb, "Dump introspection information", "infile.txt,outfile.xml" }, G_OPTION_ENTRY_NULL }; /** * gi_repository_get_option_group: * * Obtain the option group for girepository. * * It’s used by the dumper and for programs that want to provide introspection * information * * Returns: (transfer full): the option group * Since: 2.80 */ GOptionGroup * gi_repository_get_option_group (void) { GOptionGroup *group; group = g_option_group_new ("girepository", "Introspection Options", "Show Introspection Options", NULL, NULL); g_option_group_add_entries (group, introspection_args); return group; } GQuark gi_repository_error_quark (void) { static GQuark quark = 0; if (quark == 0) quark = g_quark_from_static_string ("g-irepository-error-quark"); return quark; } /** * gi_type_tag_to_string: * @type: the type_tag * * Obtain a string representation of @type * * Returns: the string * Since: 2.80 */ const char * gi_type_tag_to_string (GITypeTag type) { switch (type) { case GI_TYPE_TAG_VOID: return "void"; case GI_TYPE_TAG_BOOLEAN: return "gboolean"; case GI_TYPE_TAG_INT8: return "gint8"; case GI_TYPE_TAG_UINT8: return "guint8"; case GI_TYPE_TAG_INT16: return "gint16"; case GI_TYPE_TAG_UINT16: return "guint16"; case GI_TYPE_TAG_INT32: return "gint32"; case GI_TYPE_TAG_UINT32: return "guint32"; case GI_TYPE_TAG_INT64: return "gint64"; case GI_TYPE_TAG_UINT64: return "guint64"; case GI_TYPE_TAG_FLOAT: return "gfloat"; case GI_TYPE_TAG_DOUBLE: return "gdouble"; case GI_TYPE_TAG_UNICHAR: return "gunichar"; case GI_TYPE_TAG_GTYPE: return "GType"; case GI_TYPE_TAG_UTF8: return "utf8"; case GI_TYPE_TAG_FILENAME: return "filename"; case GI_TYPE_TAG_ARRAY: return "array"; case GI_TYPE_TAG_INTERFACE: return "interface"; case GI_TYPE_TAG_GLIST: return "glist"; case GI_TYPE_TAG_GSLIST: return "gslist"; case GI_TYPE_TAG_GHASH: return "ghash"; case GI_TYPE_TAG_ERROR: return "error"; default: return "unknown"; } } /** * gi_info_type_to_string: * @type: the info type * * Obtain a string representation of @type * * Returns: the string * Since: 2.80 */ const char * gi_info_type_to_string (GIInfoType type) { switch (type) { case GI_INFO_TYPE_INVALID: return "invalid"; case GI_INFO_TYPE_FUNCTION: return "function"; case GI_INFO_TYPE_CALLBACK: return "callback"; case GI_INFO_TYPE_STRUCT: return "struct"; case GI_INFO_TYPE_ENUM: return "enum"; case GI_INFO_TYPE_FLAGS: return "flags"; case GI_INFO_TYPE_OBJECT: return "object"; case GI_INFO_TYPE_INTERFACE: return "interface"; case GI_INFO_TYPE_CONSTANT: return "constant"; case GI_INFO_TYPE_UNION: return "union"; case GI_INFO_TYPE_VALUE: return "value"; case GI_INFO_TYPE_SIGNAL: return "signal"; case GI_INFO_TYPE_VFUNC: return "vfunc"; case GI_INFO_TYPE_PROPERTY: return "property"; case GI_INFO_TYPE_FIELD: return "field"; case GI_INFO_TYPE_ARG: return "arg"; case GI_INFO_TYPE_TYPE: return "type"; case GI_INFO_TYPE_UNRESOLVED: return "unresolved"; default: return "unknown"; } }