Implement reading of X resources, and -name to change the name under

which to look them up.

[originally from svn r2084]

unix/uxstore.c

@@ -5,10 +5,18 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+#include <X11/Xlib.h>
 #include "putty.h"
 #include "storage.h"
 
-/* FIXME. For the moment, we do nothing at all here. */
+/*
+ * For the moment, the only existing Unix utility is pterm and that
+ * has no GUI configuration at all, so our write routines need do
+ * nothing. Eventually I suppose these will read and write an rc
+ * file somewhere or other.
+ */
 
 void *open_settings_w(char *sessionname)
 {
@@ -27,19 +35,46 @@ void close_settings_w(void *handle)
 {
 }
 
+/*
+ * Reading settings, for the moment, is done by retrieving X
+ * resources from the X display. When we introduce disk files, I
+ * think what will happen is that the X resources will override
+ * PuTTY's inbuilt defaults, but that the disk files will then
+ * override those. This isn't optimal, but it's the best I can
+ * immediately work out.
+ */
+
+static Display *display;
+
 void *open_settings_r(char *sessionname)
 {
-    return NULL;
+    static int thing_to_return_an_arbitrary_non_null_pointer_to;
+    display = GDK_DISPLAY();
+    if (!display)
+	return NULL;
+    else
+	return &thing_to_return_an_arbitrary_non_null_pointer_to;
 }
 
 char *read_setting_s(void *handle, char *key, char *buffer, int buflen)
 {
-    return NULL;
+    char *val = XGetDefault(display, app_name, key);
+    if (!val)
+	return NULL;
+    else {
+	strncpy(buffer, val, buflen);
+	buffer[buflen-1] = '\0';
+	return buffer;
+    }
 }
 
 int read_setting_i(void *handle, char *key, int defvalue)
 {
-    return defvalue;
+    char *val = XGetDefault(display, app_name, key);
+    if (!val)
+	return defvalue;
+    else
+	return atoi(val);
 }
 
 void close_settings_r(void *handle)