add subscription support

src/preferences.c

@@ -21,6 +21,7 @@
  */
 
 #include "config.h"
+#include "preferences.h"
 
 #include <stdlib.h>
 #include <string.h>
@@ -41,6 +42,7 @@ static GKeyFile *prefs;
 
 static PAutocomplete login_ac;
 static PAutocomplete boolean_choice_ac;
+static PAutocomplete sub_cmd_ac;
 
 struct colour_string_t {
     char *str;
@@ -116,6 +118,11 @@ prefs_load(void)
     p_autocomplete_add(boolean_choice_ac, strdup("on"));
     p_autocomplete_add(boolean_choice_ac, strdup("off"));
 
+    sub_cmd_ac = p_autocomplete_new();
+    p_autocomplete_add(sub_cmd_ac, strdup("add"));
+    p_autocomplete_add(sub_cmd_ac, strdup("del"));
+    p_autocomplete_add(sub_cmd_ac, strdup("request"));
+    p_autocomplete_add(sub_cmd_ac, strdup("show"));
 }
 
 void
@@ -123,6 +130,7 @@ prefs_close(void)
 {
     p_autocomplete_clear(login_ac);
     p_autocomplete_clear(boolean_choice_ac);
+    p_autocomplete_clear(sub_cmd_ac);
     g_key_file_free(prefs);
 }
 
@@ -222,6 +230,22 @@ prefs_reset_boolean_choice(void)
     p_autocomplete_reset(boolean_choice_ac);
 }
 
+char *
+prefs_autocomplete_sub_cmd(char *prefix)
+{
+    char *result;
+    result = p_autocomplete_complete(sub_cmd_ac, prefix);
+    /* TODO: fix the problem with ac->last_found instead of this hack */
+    prefs_reset_sub_cmd();
+    return result;
+}
+
+void
+prefs_reset_sub_cmd(void)
+{
+    p_autocomplete_reset(sub_cmd_ac);
+}
+
 gboolean
 prefs_get_beep(void)
 {