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-rw-r--r--src/ld-library.c524
1 files changed, 0 insertions, 524 deletions
diff --git a/src/ld-library.c b/src/ld-library.c
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--- a/src/ld-library.c
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@@ -1,524 +0,0 @@
-/*
- * ld-library.c
- *
- * This file is a part of logdiag.
- * Copyright Přemysl Janouch 2010 - 2011. All rights reserved.
- *
- * See the file LICENSE for licensing information.
- *
- */
-
-#include <string.h>
-
-#include "liblogdiag.h"
-#include "config.h"
-
-
-/**
- * SECTION:ld-library
- * @short_description: A symbol library.
- * @see_also: #LdSymbol, #LdSymbolCategory
- *
- * #LdLibrary is used for loading symbols from their files.
- */
-
-/*
- * LdLibraryPrivate:
- * @lua: State of the scripting language.
- * @children: Child objects of the library.
- */
-struct _LdLibraryPrivate
-{
- LdLua *lua;
- GSList *children;
-};
-
-static void ld_library_finalize (GObject *gobject);
-
-static LdSymbolCategory *load_category (LdLibrary *self,
- const gchar *path, const gchar *name);
-static gboolean load_category_cb (const gchar *base,
- const gchar *filename, gpointer userdata);
-static void load_category_symbol_cb (LdSymbol *symbol, gpointer user_data);
-
-static gchar *read_human_name_from_file (const gchar *filename);
-
-static gboolean foreach_dir (const gchar *path,
- gboolean (*callback) (const gchar *, const gchar *, gpointer),
- gpointer userdata, GError **error);
-static gboolean ld_library_load_cb
- (const gchar *base, const gchar *filename, gpointer userdata);
-
-
-G_DEFINE_TYPE (LdLibrary, ld_library, G_TYPE_OBJECT);
-
-static void
-ld_library_class_init (LdLibraryClass *klass)
-{
- GObjectClass *object_class;
-
- object_class = G_OBJECT_CLASS (klass);
- object_class->finalize = ld_library_finalize;
-
-/**
- * LdLibrary::changed:
- * @library: The library object.
- *
- * Contents of the library have changed.
- */
- klass->changed_signal = g_signal_new
- ("changed", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, 0, NULL, NULL,
- g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- g_type_class_add_private (klass, sizeof (LdLibraryPrivate));
-}
-
-static void
-ld_library_init (LdLibrary *self)
-{
- self->priv = G_TYPE_INSTANCE_GET_PRIVATE
- (self, LD_TYPE_LIBRARY, LdLibraryPrivate);
-
- self->priv->lua = ld_lua_new ();
- self->priv->children = NULL;
-}
-
-static void
-ld_library_finalize (GObject *gobject)
-{
- LdLibrary *self;
-
- self = LD_LIBRARY (gobject);
-
- g_object_unref (self->priv->lua);
-
- g_slist_foreach (self->priv->children, (GFunc) g_object_unref, NULL);
- g_slist_free (self->priv->children);
-
- /* Chain up to the parent class. */
- G_OBJECT_CLASS (ld_library_parent_class)->finalize (gobject);
-}
-
-/**
- * ld_library_new:
- *
- * Create an instance.
- */
-LdLibrary *
-ld_library_new (void)
-{
- return g_object_new (LD_TYPE_LIBRARY, NULL);
-}
-
-/*
- * foreach_dir:
- *
- * Call a user-defined function for each file within a directory.
- */
-static gboolean
-foreach_dir (const gchar *path,
- gboolean (*callback) (const gchar *, const gchar *, gpointer),
- gpointer userdata, GError **error)
-{
- GDir *dir;
- const gchar *item;
-
- g_return_val_if_fail (path != NULL, FALSE);
- g_return_val_if_fail (callback != NULL, FALSE);
-
- dir = g_dir_open (path, 0, error);
- if (!dir)
- return FALSE;
-
- while ((item = g_dir_read_name (dir)))
- {
- gchar *filename;
-
- filename = g_build_filename (path, item, NULL);
- if (!callback (item, filename, userdata))
- break;
- g_free (filename);
- }
- g_dir_close (dir);
- return TRUE;
-}
-
-/*
- * LoadCategoryData:
- *
- * Data shared between load_category() and load_category_cb().
- */
-typedef struct
-{
- LdLibrary *self;
- LdSymbolCategory *cat;
-}
-LoadCategoryData;
-
-/*
- * load_category:
- * @self: An #LdLibrary object.
- * @path: The path to the category.
- * @name: The default name of the category.
- *
- * Loads a category into the library.
- */
-static LdSymbolCategory *
-load_category (LdLibrary *self, const gchar *path, const gchar *name)
-{
- LdSymbolCategory *cat;
- gchar *icon_file, *category_file;
- gchar *human_name;
- LoadCategoryData data;
-
- g_return_val_if_fail (LD_IS_LIBRARY (self), NULL);
- g_return_val_if_fail (path != NULL, NULL);
- g_return_val_if_fail (name != NULL, NULL);
-
- if (!g_file_test (path, G_FILE_TEST_IS_DIR))
- goto load_category_fail_1;
-
- icon_file = g_build_filename (path, "icon.svg", NULL);
- if (!g_file_test (icon_file, G_FILE_TEST_IS_REGULAR))
- {
- g_warning ("The category in %s has no icon.", path);
- goto load_category_fail_2;
- }
-
- category_file = g_build_filename (path, "category.json", NULL);
- human_name = read_human_name_from_file (category_file);
- if (!human_name)
- human_name = g_strdup (name);
-
- cat = ld_symbol_category_new (name, human_name);
- ld_symbol_category_set_image_path (cat, icon_file);
-
- data.self = self;
- data.cat = cat;
- foreach_dir (path, load_category_cb, &data, NULL);
-
- g_free (human_name);
- g_free (category_file);
- g_free (icon_file);
- return cat;
-
-load_category_fail_2:
- g_free (icon_file);
-load_category_fail_1:
- return NULL;
-}
-
-/*
- * load_category_cb:
- *
- * Load script files from a directory into a symbol category.
- */
-static gboolean
-load_category_cb (const gchar *base, const gchar *filename, gpointer userdata)
-{
- LoadCategoryData *data;
-
- g_return_val_if_fail (base != NULL, FALSE);
- g_return_val_if_fail (filename != NULL, FALSE);
- g_return_val_if_fail (userdata != NULL, FALSE);
-
- data = (LoadCategoryData *) userdata;
-
- if (ld_lua_check_file (data->self->priv->lua, filename))
- ld_lua_load_file (data->self->priv->lua, filename,
- load_category_symbol_cb, data->cat);
- return TRUE;
-}
-
-/*
- * load_category_symbol_cb:
- *
- * Insert newly registered symbols into the category.
- */
-static void
-load_category_symbol_cb (LdSymbol *symbol, gpointer user_data)
-{
- const gchar *name;
- LdSymbolCategory *cat;
- const GSList *children, *iter;
-
- g_return_if_fail (LD_IS_SYMBOL (symbol));
- g_return_if_fail (LD_IS_SYMBOL_CATEGORY (user_data));
-
- cat = LD_SYMBOL_CATEGORY (user_data);
- name = ld_symbol_get_name (symbol);
-
- /* Check for name collisions with other symbols. */
- children = ld_symbol_category_get_children (cat);
- for (iter = children; iter; iter = iter->next)
- {
- if (!LD_IS_SYMBOL (iter->data))
- continue;
- if (!strcmp (name, ld_symbol_get_name (LD_SYMBOL (iter->data))))
- {
- g_warning ("Attempted to insert multiple '%s' symbols into"
- " category '%s'.", name, ld_symbol_category_get_name (cat));
- return;
- }
- }
- ld_symbol_category_insert_child (cat, G_OBJECT (symbol), -1);
-}
-
-/*
- * read_human_name_from_file:
- * @filename: Location of the JSON file.
- *
- * Read the human name of the processed category.
- */
-static gchar *
-read_human_name_from_file (const gchar *filename)
-{
- const gchar *const *lang;
- JsonParser *parser;
- JsonNode *root;
- JsonObject *object;
- GError *error;
-
- g_return_val_if_fail (filename != NULL, NULL);
-
- parser = json_parser_new ();
- error = NULL;
- if (!json_parser_load_from_file (parser, filename, &error))
- {
- g_warning ("%s", error->message);
- g_error_free (error);
- goto read_human_name_from_file_end;
- }
-
- root = json_parser_get_root (parser);
- if (!JSON_NODE_HOLDS_OBJECT (root))
- {
- g_warning ("Failed to parse '%s': %s", filename,
- "The root node is not an object.");
- goto read_human_name_from_file_end;
- }
-
- object = json_node_get_object (root);
- for (lang = g_get_language_names (); *lang; lang++)
- {
- const gchar *member;
-
- if (!json_object_has_member (object, *lang))
- continue;
- member = json_object_get_string_member (object, *lang);
-
- if (member != NULL)
- {
- gchar *result;
-
- result = g_strdup (member);
- g_object_unref (parser);
- return result;
- }
- }
-
-read_human_name_from_file_end:
- g_object_unref (parser);
- return NULL;
-}
-
-/*
- * LibraryLoadData:
- *
- * Data shared between ld_library_load() and ld_library_load_cb().
- */
-typedef struct
-{
- LdLibrary *self;
- gboolean changed;
-}
-LibraryLoadData;
-
-/**
- * ld_library_load:
- * @self: An #LdLibrary object.
- * @directory: A directory to be loaded.
- *
- * Load the contents of a directory into the library.
- */
-gboolean
-ld_library_load (LdLibrary *self, const gchar *directory)
-{
- LibraryLoadData data;
-
- g_return_val_if_fail (LD_IS_LIBRARY (self), FALSE);
- g_return_val_if_fail (directory != NULL, FALSE);
-
- data.self = self;
- data.changed = FALSE;
- foreach_dir (directory, ld_library_load_cb, &data, NULL);
-
- if (data.changed)
- g_signal_emit (self, LD_LIBRARY_GET_CLASS (self)->changed_signal, 0);
-
- return TRUE;
-}
-
-/*
- * ld_library_load_cb:
- *
- * A callback that's called for each file in the root directory.
- */
-static gboolean
-ld_library_load_cb (const gchar *base, const gchar *filename, gpointer userdata)
-{
- LdSymbolCategory *cat;
- LibraryLoadData *data;
-
- g_return_val_if_fail (base != NULL, FALSE);
- g_return_val_if_fail (filename != NULL, FALSE);
- g_return_val_if_fail (userdata != NULL, FALSE);
-
- data = (LibraryLoadData *) userdata;
-
- cat = load_category (data->self, filename, base);
- if (cat)
- ld_library_insert_child (data->self, G_OBJECT (cat), -1);
-
- data->changed = TRUE;
- return TRUE;
-}
-
-/**
- * ld_library_find_symbol:
- * @self: An #LdLibrary object.
- * @identifier: An identifier of the symbol to be searched for.
- *
- * Search for a symbol in the library.
- *
- * Return value: A symbol object if found, NULL otherwise.
- */
-/* XXX: With this level of indentation, this function is really ugly. */
-LdSymbol *
-ld_library_find_symbol (LdLibrary *self, const gchar *identifier)
-{
- gchar **id_el_start, **id_el;
- const GSList *list, *list_el;
-
- g_return_val_if_fail (LD_IS_LIBRARY (self), NULL);
- g_return_val_if_fail (identifier != NULL, NULL);
-
- id_el_start = g_strsplit (identifier, LD_LIBRARY_IDENTIFIER_SEPARATOR, 0);
- if (!id_el_start)
- return NULL;
-
- list = ld_library_get_children (self);
- for (id_el = id_el_start; id_el[0]; id_el++)
- {
- LdSymbolCategory *cat;
- LdSymbol *symbol;
- gboolean found = FALSE;
-
- for (list_el = list; list_el; list_el = g_slist_next (list_el))
- {
- /* If the current identifier element is a category (not last)
- * and this list element is a category.
- */
- if (id_el[1] && LD_IS_SYMBOL_CATEGORY (list_el->data))
- {
- cat = LD_SYMBOL_CATEGORY (list_el->data);
- if (strcmp (id_el[0], ld_symbol_category_get_name (cat)))
- continue;
-
- list = ld_symbol_category_get_children (cat);
- found = TRUE;
- break;
- }
- /* If the current identifier element is a symbol (last)
- * and this list element is a symbol.
- */
- else if (!id_el[1] && LD_IS_SYMBOL (list_el->data))
- {
- symbol = LD_SYMBOL (list_el->data);
- if (strcmp (id_el[0], ld_symbol_get_name (symbol)))
- continue;
-
- g_strfreev (id_el_start);
- return symbol;
- }
- }
-
- if (!found)
- break;
- }
- g_strfreev (id_el_start);
- return NULL;
-}
-
-/**
- * ld_library_clear:
- * @self: An #LdLibrary object.
- *
- * Clear all the contents.
- */
-void
-ld_library_clear (LdLibrary *self)
-{
- g_return_if_fail (LD_IS_LIBRARY (self));
-
- g_slist_foreach (self->priv->children, (GFunc) g_object_unref, NULL);
- g_slist_free (self->priv->children);
- self->priv->children = NULL;
-
- g_signal_emit (self,
- LD_LIBRARY_GET_CLASS (self)->changed_signal, 0);
-}
-
-/**
- * ld_library_insert_child:
- * @self: An #LdLibrary object.
- * @child: The child to be inserted.
- * @pos: The position at which the child will be inserted.
- * Negative values will append to the end of list.
- *
- * Insert a child into the library.
- */
-void
-ld_library_insert_child (LdLibrary *self, GObject *child, gint pos)
-{
- g_return_if_fail (LD_IS_LIBRARY (self));
- g_return_if_fail (G_IS_OBJECT (child));
-
- g_object_ref (child);
- self->priv->children = g_slist_insert (self->priv->children, child, pos);
-}
-
-/**
- * ld_library_remove_child:
- * @self: An #LdLibrary object.
- * @child: The child to be removed.
- *
- * Remove a child from the library.
- */
-void
-ld_library_remove_child (LdLibrary *self, GObject *child)
-{
- g_return_if_fail (LD_IS_LIBRARY (self));
- g_return_if_fail (G_IS_OBJECT (child));
-
- if (g_slist_find (self->priv->children, child))
- {
- g_object_unref (child);
- self->priv->children = g_slist_remove (self->priv->children, child);
- }
-}
-
-/**
- * ld_library_get_children:
- * @self: An #LdLibrary object.
- *
- * Return value: The internal list of children. Do not modify.
- */
-const GSList *
-ld_library_get_children (LdLibrary *self)
-{
- g_return_val_if_fail (LD_IS_LIBRARY (self), NULL);
- return self->priv->children;
-}
-