[Plugins] Add -no-plugins and -plugin-path options

* -no-plugins disables the loading of plugins.
* -plugin-path specifies the directory used by rofi to look for plugins.

config/config.c

@@ -116,4 +116,5 @@ Settings config = {
     .color_active  = NULL,
     .color_urgent  = NULL,
     .color_window  = NULL,
+    .plugin_path   = PLUGIN_PATH,
 };

doc/rofi-manpage.markdown

@@ -222,6 +222,15 @@ Hide the indicator that shows what part of the string is matched.
 
 Disables lazy grab, this forces the keyboard being grabbed before gui is shown.
 
+`-no-plugins`
+
+Disable plugin loading.
+
+`-plugin-path` *directory*
+
+Specify the directory where *rofi* should look for plugins.
+
+
 ### Matching
 
 `-matching` *method*

doc/rofi.1

@@ -312,6 +312,18 @@ Hide the indicator that shows what part of the string is matched\.
 .P
 Disables lazy grab, this forces the keyboard being grabbed before gui is shown\.
 .
+.P
+\fB\-no\-plugins\fR
+.
+.P
+Disable plugin loading\.
+.
+.P
+\fB\-plugin\-path\fR \fIdirectory\fR
+.
+.P
+Specify the directory where \fIrofi\fR should look for plugins\.
+.
 .SS "Matching"
 \fB\-matching\fR \fImethod\fR
 .

include/settings.h

@@ -165,6 +165,8 @@ typedef struct
     gboolean       show_match;
 
     char           *theme;
+    /** Path where plugins can be found. */
+    char            * plugin_path;
 } Settings;
 /** Global Settings structure. */
 extern Settings config;

source/rofi.c

@@ -305,6 +305,7 @@ static void print_main_application_options ( int is_term )
     print_help_msg ( "-normal-window", "", "In dmenu mode, behave as a normal window. (experimental)", NULL, is_term );
     print_help_msg ( "-show", "[mode]", "Show the mode 'mode' and exit. The mode has to be enabled.", NULL, is_term );
     print_help_msg ( "-no-lazy-grab", "", "Disable lazy grab that, when fail to grab keyboard, does not block but retry later.", NULL, is_term );
+    print_help_msg ( "-no-plugins", "", "Disable loading of external plugins.", NULL, is_term );
 }
 static void help ( G_GNUC_UNUSED int argc, char **argv )
 {
@@ -547,7 +548,7 @@ static void rofi_collect_modi_dir ( const char *base_dir )
                 Mode *m = NULL;
                 if ( g_module_symbol ( mod, "mode", (gpointer *) &m ) ) {
                     if ( m->abi_version != ABI_VERSION ) {
-                        g_warning ( "ABI version of plugin does not match: %08X expecting: %08X", m->abi_version, ABI_VERSION );
+                        g_warning ( "ABI version of plugin: '%s' does not match: %08X expecting: %08X", dn, m->abi_version, ABI_VERSION );
                         g_module_close ( mod );
                     }
                     else {
@@ -558,7 +559,7 @@ static void rofi_collect_modi_dir ( const char *base_dir )
                     }
                 }
                 else {
-                    g_warning ( "Symbol 'mode' not found in module: %s", fn );
+                    g_warning ( "Symbol 'mode' not found in module: %s", dn );
                     g_module_close ( mod );
                 }
             }
@@ -585,7 +586,9 @@ static void rofi_collect_modi ( void )
     rofi_collect_modi_add ( &combi_mode );
     rofi_collect_modi_add ( &help_keys_mode );
 
-    rofi_collect_modi_dir ( PLUGIN_PATH );
+    if ( find_arg ( "-no-plugins" ) < 0 ) {
+        rofi_collect_modi_dir ( config.plugin_path );
+    }
 }
 
 /**

source/xrmoptions.c

@@ -180,6 +180,8 @@ static XrmOption xrmOptions[] = {
       "Color scheme for active row", CONFIG_DEFAULT },
     { xrm_String,  "color-window",      { .str  = &config.color_window          }, NULL,
       "Color scheme window", CONFIG_DEFAULT },
+    { xrm_String,  "plugin-path",      { .str  = &config.plugin_path            }, NULL,
+      "Directory containing plugins", CONFIG_DEFAULT },
 };
 
 /** Dynamic array of extra options */