First cut of adding a default file name

The default file name is OS specific and tries to follow the customs on
each of the OSs. It can be configured through the preferences dialog.

On MacOS we get a strange warning which appears to be a well documented
Gtk bug on MacOS.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/linux.c b/linux.c
index 42a3c9f5f..8d9f6f8ce 100644
--- a/linux.c
+++ b/linux.c
@@ -1,7 +1,10 @@
 /* linux.c */
 /* implements Linux specific functions */
+#include "dive.h"
 #include "display-gtk.h"
 #include <gconf/gconf-client.h>
+#include <string.h>
+
 #define DIVELIST_DEFAULT_FONT "Sans 8"
 
 GConfClient *gconf;
@@ -63,6 +66,24 @@ const char *subsurface_icon_name()
 	return "subsurface.svg";
 }
 
+const char *subsurface_default_filename()
+{
+	if (default_filename) {
+		return default_filename;
+	} else {
+		const char *home, *user;
+		char *buffer;
+		int len;
+
+		home = g_get_home_dir();
+		user = g_get_user_name();
+		len = strlen(home) + strlen(user) + 17;
+		buffer = malloc(len);
+		snprintf(buffer, len, "%s/subsurface/%s.xml", home, user);
+		return buffer;
+	}
+}
+
 void subsurface_ui_setup(GtkSettings *settings, GtkWidget *menubar,
 		GtkWidget *vbox, GtkUIManager *ui_manager)
 {