heraia_io.c

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00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
00002 /*
00003   heraia_io.c
00004   heraia_io.c - input and output functions for heraia
00005 
00006   (C) Copyright 2005 - 2008 Olivier Delhomme
00007   e-mail : heraia@delhomme.org
00008   URL    : http://heraia.tuxfamily.org
00009 
00010   This program is free software; you can redistribute it and/or modify
00011   it under the terms of the GNU General Public License as published by
00012   the Free Software Foundation; either version 2, or  (at your option)
00013   any later version.
00014 
00015   This program is distributed in the hope that it will be useful,
00016   but WITHOUT ANY WARRANTY;  without even the implied warranty of
00017   MERCHANTABILITY  or  FITNESS FOR A PARTICULAR PURPOSE.  See the
00018   GNU General Public License for more details.
00019 
00020   You should have received a copy of the GNU General Public License
00021   along with this program; if not, write to the Free Software
00022   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
00023 /**
00024  * @file heraia_io.c
00025  * Here I want to see everything that deals with I/O, files, disk and so on.
00026  */
00027 #include <libheraia.h>
00028 
00029 static GladeXML *load_glade_xml_if_it_exists(char *file_to_load);
00030 
00031 /**
00032  *  Loads the file 'filename' to analyse and populates the
00033  *  corresponfing structure 'main_window' as needed thus
00034  *  main_window and filename must NOT be NULL pointers
00035  * @param main_window : main structure (it must not be NULL)
00036  * @param filename : filename of the file to load (it must not be NULL)
00037  * @return TRUE if everything went ok, FALSE otherwise
00038  */
00039 gboolean load_file_to_analyse(heraia_window_t *main_window, gchar *filename)
00040 {
00041         struct stat *stat_buf = NULL;
00042         gboolean success = FALSE;
00043         GtkWidget *notebook = NULL;
00044         doc_t* doc = NULL;
00045 
00046         g_return_val_if_fail(filename != NULL, FALSE);
00047         g_return_val_if_fail(main_window != NULL, FALSE);
00048 
00049         stat_buf = (struct stat *) g_malloc0 (sizeof(struct stat));
00050         stat(filename, stat_buf);
00051 
00052         log_message(main_window, G_LOG_LEVEL_DEBUG, "filename to load : %s", filename);
00053 
00054         if (S_ISREG(stat_buf->st_mode) && stat_buf->st_size>0)
00055                 {
00056 
00057                         doc = heraia_hex_document_new(main_window, filename); /* removes the old hexdocument and adds a new one */
00058 
00059                         if (doc != NULL)
00060                         {
00061                                 add_new_tab_in_main_window(main_window, doc);
00062 
00063                                 /*
00064                                 gtk_box_pack_start(GTK_BOX(heraia_get_widget(main_window->xmls->main, "vbox1")),
00065                                                                    main_window->current_DW->current_hexwidget, TRUE, TRUE, 0);
00066 
00067                                 gtk_widget_show(main_window->current_DW->current_hexwidget);
00068                                 */
00069 
00070                                 log_message(main_window, G_LOG_LEVEL_DEBUG, "Hexwidget : %p", doc->hex_widget);
00071 
00072                                 success = TRUE;
00073 
00074                             /* No more needed
00075                                 if (main_window->filename != filename)
00076                                         {
00077                                                 if (main_window->filename != NULL)
00078                                                 {
00079                                                         g_free(main_window->filename);
00080                                                 }
00081                                                 main_window->filename = g_strdup_printf("%s", filename);
00082                                         }
00083                                 */
00084 
00085                                 /* updating the window name and tab's name */
00086                                 update_main_window_name(main_window);
00087                                 set_notebook_tab_name(main_window);
00088 
00089                                 /* Showing all the widgets */
00090                                 gtk_widget_set_sensitive(heraia_get_widget(main_window->xmls->main, "save"), TRUE);
00091                                 gtk_widget_set_sensitive(heraia_get_widget(main_window->xmls->main, "save_as"), TRUE);
00092                                 notebook = heraia_get_widget(main_window->xmls->main, "file_notebook");
00093                                 gtk_widget_show(notebook);
00094 
00095                                 log_message(main_window, G_LOG_LEVEL_DEBUG, "file %s loaded !", filename);
00096                         }
00097                         else
00098                         {
00099                                 log_message(main_window, G_LOG_LEVEL_ERROR, "Error while trying to load file %s", filename);
00100                                 success = FALSE;
00101                         }
00102 
00103                 }
00104         else
00105                 {
00106                         if (S_ISREG(stat_buf->st_mode))
00107                                 {
00108                                         log_message(main_window, G_LOG_LEVEL_WARNING, "The file %s is empty !", filename);
00109                                 }
00110                         else
00111                                 {
00112                                         log_message(main_window, G_LOG_LEVEL_WARNING, "The file %s does not exist !", filename);
00113                                 }
00114                         success = FALSE;
00115                 }
00116 
00117         g_free(stat_buf);
00118 
00119         return success;
00120 }
00121 
00122 
00123 /**
00124  * @fn GladeXML *load_glade_xml_if_it_exists(gchar *file_to_load)
00125  *  Checks if file_to_load exists and is valid and if possible, loads it
00126  *  in the xml structure
00127  * @param file_to_load : a filename of a possibly existing glade file
00128  * @return returns the GladeXML structure if any, NULL otherwise
00129  */
00130 static GladeXML *load_glade_xml_if_it_exists(gchar *file_to_load)
00131 {
00132         struct stat *stat_buf;
00133         GladeXML *xml = NULL;
00134 
00135         stat_buf = (struct stat *) g_malloc0 (sizeof(struct stat));
00136 
00137         stat(file_to_load, stat_buf);
00138         if (S_ISREG(stat_buf->st_mode) && stat_buf->st_size>0)
00139                 {
00140                         xml = glade_xml_new(file_to_load, NULL, NULL);
00141                 }
00142         else
00143                 {
00144                         xml = NULL;
00145                 }
00146 
00147         g_free(stat_buf);
00148 
00149         return xml;
00150 }
00151 
00152 /**
00153  * @fn GladeXML *load_glade_xml_file(GList *location_list, gchar *filename)
00154  *  loads the glade xml file ('filename') that describes an interface,
00155  *  tries all the paths defined in the location_list and put the definition
00156  *  in the 'xml' variable. A frontend to load_glade_xml_if_it_exists function
00157  * @param location_list : a Glist containing paths where we might found the file
00158  * @param filename : glade's file's name that we want to load (possibly)
00159  * @return returns the GladeXML structure if any, NULL otherwise
00160  */
00161 GladeXML *load_glade_xml_file(GList *location_list, gchar *filename)
00162 {
00163         gchar *file_to_load = NULL;
00164         GList *list = g_list_first(location_list);
00165         GladeXML *xml = NULL;
00166 
00167         while (list != NULL && xml == NULL)
00168                 {
00169                         file_to_load =  g_build_filename((gchar *) list->data, filename, NULL);
00170 
00171                         xml = load_glade_xml_if_it_exists(file_to_load);
00172 
00173                         if (xml == NULL)
00174                                 {
00175                                         list = list->next;
00176                                 }
00177                         g_free(file_to_load);
00178                 }
00179 
00180         return xml;
00181 }
00182 
00183 
00184 /**
00185  * @fn gboolean load_preference_file(heraia_window_t *main_window)
00186  *  Load the preference file
00187  * @param main_window : main structure
00188  * @return TRUE if everything went ok, FALSE otherwise
00189  */
00190 gboolean load_preference_file(heraia_window_t *main_window)
00191 {
00192         if (main_window != NULL && main_window->prefs != NULL)
00193         {
00194                 return g_key_file_load_from_file(main_window->prefs->file, main_window->prefs->filename,  G_KEY_FILE_KEEP_COMMENTS & G_KEY_FILE_KEEP_TRANSLATIONS, NULL);
00195         }
00196         else
00197         {
00198                 return FALSE;
00199         }
00200 }
00201 
00202 
00203 /**
00204  * @fn gboolean save_preferences_to_file(prefs_t *prefs)
00205  *  Saves the preferences to the file preferences
00206  * @param prefs : preferences (from prefs_t structure)
00207  * @return TRUE if everything went ok, FALSE otherwise
00208  */
00209 gboolean save_preferences_to_file(prefs_t *prefs)
00210 {
00211         gsize length = 0;
00212         gchar *contents = NULL;
00213         gboolean result = FALSE;
00214 
00215         if (prefs != NULL && prefs->file != NULL && prefs->filename != NULL)
00216         {
00217                 contents = g_key_file_to_data(prefs->file, &length, NULL);
00218                 result = g_file_set_contents(prefs->filename, contents, length, NULL);
00219                 g_free(contents);
00220         }
00221 
00222         return result;
00223 }

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