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  * @fn gboolean load_file_to_analyse(heraia_window_t *main_window, gchar *filename)
00033  *  Loads the file 'filename' to analyse and populates the
00034  *  corresponfing structure 'main_window' as needed thus
00035  *  main_window and filename must NOT be NULL pointers
00036  * @param main_window : main structure (it must not be NULL)
00037  * @param filename : filename of the file to load (it must not be NULL)
00038  * @return TRUE if everything went ok, FALSE otherwise
00039  */
00040 gboolean load_file_to_analyse(heraia_window_t *main_window, gchar *filename)
00041 {
00042         struct stat *stat_buf = NULL;
00043         gboolean success = FALSE;
00044         GtkWidget *notebook = 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                         heraia_hex_document_new(main_window, filename); /* removes the old hexdocument and adds a new one */
00058 
00059                         gtk_box_pack_start(GTK_BOX(heraia_get_widget(main_window->xmls->main, "vbox1")), 
00060                                                            main_window->current_DW->current_hexwidget, TRUE, TRUE, 0);
00061                         
00062                         gtk_widget_show(main_window->current_DW->current_hexwidget);
00063 
00064                         log_message(main_window, G_LOG_LEVEL_DEBUG, "Hexwidget : %p", main_window->current_DW->current_hexwidget);
00065                         
00066                         success = TRUE;
00067 
00068                         if (main_window->filename != filename)
00069                                 {
00070                                         if (main_window->filename != NULL)
00071                                                 {
00072                                                         g_free(main_window->filename);
00073                                                 }
00074                                         main_window->filename = g_strdup_printf("%s", filename);
00075                                 }
00076                 
00077                         /* updating the window name and tab's name */
00078                     update_main_window_name(main_window);
00079                         set_notebook_tab_name(main_window);
00080                         
00081                         /* Showing all the widgets */
00082                         gtk_widget_set_sensitive(heraia_get_widget(main_window->xmls->main, "save"), TRUE);
00083                         gtk_widget_set_sensitive(heraia_get_widget(main_window->xmls->main, "save_as"), TRUE);
00084                         notebook = heraia_get_widget(main_window->xmls->main, "file_notebook");
00085                         gtk_widget_show(notebook);
00086                         
00087                         log_message(main_window, G_LOG_LEVEL_DEBUG, "file %s loaded !", main_window->filename);
00088                         
00089                         
00090                 } 
00091         else
00092                 {
00093                         if (S_ISREG(stat_buf->st_mode))
00094                                 {
00095                                         log_message(main_window, G_LOG_LEVEL_WARNING, "The file %s is empty !", filename);
00096                                 }
00097                         else
00098                                 {
00099                                         log_message(main_window, G_LOG_LEVEL_WARNING, "The file %s does not exist !", filename);
00100                                 }
00101                         success = FALSE;
00102                 }
00103         
00104         g_free(stat_buf);
00105 
00106         return success;
00107 }
00108 
00109 
00110 /** 
00111  * @fn GladeXML *load_glade_xml_if_it_exists(gchar *file_to_load)
00112  *  Checks if file_to_load exists and is valid and if possible, loads it
00113  *  in the xml structure
00114  * @param file_to_load : a filename of a possibly existing glade file
00115  * @return returns the GladeXML structure if any, NULL otherwise
00116  */
00117 static GladeXML *load_glade_xml_if_it_exists(gchar *file_to_load)
00118 {
00119         struct stat *stat_buf;
00120         GladeXML *xml = NULL;
00121 
00122         stat_buf = (struct stat *) g_malloc0 (sizeof(struct stat));
00123 
00124         stat(file_to_load, stat_buf);
00125         if (S_ISREG(stat_buf->st_mode) && stat_buf->st_size>0)
00126                 {
00127                         xml = glade_xml_new(file_to_load, NULL, NULL);
00128                 }
00129         else
00130                 {
00131                         xml = NULL;
00132                 }
00133 
00134         g_free(stat_buf);
00135 
00136         return xml;
00137 }
00138 
00139 /**
00140  * @fn GladeXML *load_glade_xml_file(GList *location_list, gchar *filename)
00141  *  loads the glade xml file ('filename') that describes an interface,
00142  *  tries all the paths defined in the location_list and put the definition
00143  *  in the 'xml' variable. A frontend to load_glade_xml_if_it_exists function
00144  * @param location_list : a Glist containing paths where we might found the file
00145  * @param filename : glade's file's name that we want to load (possibly)
00146  * @return returns the GladeXML structure if any, NULL otherwise
00147  */
00148 GladeXML *load_glade_xml_file(GList *location_list, gchar *filename)
00149 {       
00150         gchar *file_to_load = NULL;
00151         GList *list = g_list_first(location_list);
00152         GladeXML *xml = NULL;
00153 
00154         while (list != NULL && xml == NULL)
00155                 {
00156                         file_to_load =  g_build_filename((gchar *) list->data, filename, NULL);
00157 
00158                         xml = load_glade_xml_if_it_exists(file_to_load);
00159 
00160                         if (xml == NULL)
00161                                 {
00162                                         list = list->next;      
00163                                 }
00164                         g_free(file_to_load);
00165                 }
00166         
00167         return xml;
00168 }
00169 
00170 
00171 /**
00172  * @fn gboolean load_preference_file(heraia_window_t *main_window)
00173  *  Load the preference file
00174  * @param main_window : main structure
00175  * @return TRUE if everything went ok, FALSE otherwise
00176  */
00177 gboolean load_preference_file(heraia_window_t *main_window)
00178 {       
00179         if (main_window != NULL && main_window->prefs != NULL)
00180         {
00181                 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);
00182         }
00183         else
00184         {       
00185                 return FALSE;
00186         }
00187 }
00188 
00189 
00190 /**
00191  * @fn gboolean save_preferences_to_file(prefs_t *prefs)
00192  *  Saves the preferences to the file preferences
00193  * @param prefs : preferences (from prefs_t structure)
00194  * @return TRUE if everything went ok, FALSE otherwise
00195  */
00196 gboolean save_preferences_to_file(prefs_t *prefs)
00197 {
00198         gsize length = 0;
00199         gchar *contents = NULL;
00200         gboolean result = FALSE;
00201         
00202         if (prefs != NULL && prefs->file != NULL && prefs->filename != NULL)
00203         {
00204                 contents = g_key_file_to_data(prefs->file, &length, NULL);
00205                 result = g_file_set_contents(prefs->filename, contents, length, NULL);
00206                 g_free(contents);
00207         }
00208         
00209         return result;
00210 }
00211 
00212 
00213 

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