Add number mode for dmenu (Request from Taharqa)

* option -i.

Changelog

@@ -1,4 +1,8 @@
-0.15.2: (unreleased)
+0.15.3: (unreleased)
+	New feature:
+		- Number mode for dmenu. allows user to get index back instead of content.
+
+0.15.2: 
 	Removed features:
 		- Remove (broken) hmode
 		- Old style key binding and mode launcher.

doc/rofi-manpage.markdown

@@ -356,6 +356,10 @@ daemon listening to specific key-combinations.
 
     Default: *0*
 
+`-i`
+
+    Number mode, return the index of the selected row. (starting at 0)
+
 ### Message dialog
 
 `-e` *message*

doc/rofi.1

@@ -439,6 +439,14 @@ Select a certain line.
 Default: *0*
 .fi
 .RE
+.PP
+\fB\fC\-i\fR
+.PP
+.RS
+.nf
+Number mode, return the index of the selected row. (starting at 0)
+.fi
+.RE
 .SS Message dialog
 .PP
 \fB\fC\-e\fR \fImessage\fP

include/dialogs/dmenu-dialog.h

@@ -1,12 +1,6 @@
 #ifndef __DMENU_DIALOG_H__
 #define __DMENU_DIALOG_H__
 
-/**
- * Prompt used in dmenu.
- */
-extern char *dmenu_prompt;
-extern int  dmenu_selected_line;
-
 
 /**
  * @param input Pointer to the user-input string.

source/dialogs/dmenu-dialog.c

@@ -36,8 +36,6 @@
 #include "dialogs/dmenu-dialog.h"
 #include "helper.h"
 
-char *dmenu_prompt       = "dmenu ";
-int  dmenu_selected_line = 0;
 
 static char **get_dmenu ( int *length )
 {
@@ -66,14 +64,28 @@ static char **get_dmenu ( int *length )
     return retv;
 }
 
+// Remote pointer to input arguments.
+extern int  stored_argc;
+extern char **stored_argv;
+
 int dmenu_switcher_dialog ( char **input )
 {
-    int  selected_line = dmenu_selected_line;
+    char *dmenu_prompt = "dmenu ";
+    int  selected_line = 0;
     int  retv          = FALSE;
     int  length        = 0;
     char **list        = get_dmenu ( &length );
     int  restart       = FALSE;
 
+    int  number_mode = FALSE;
+    // Check if the user requested number mode.
+    if ( find_arg ( stored_argc, stored_argv, "-i" ) >= 0 ) {
+        number_mode = TRUE;
+    }
+    // Check prompt
+    find_arg_str ( stored_argc, stored_argv, "-p", &dmenu_prompt );
+    find_arg_int ( stored_argc, stored_argv, "-l", &selected_line );
+
     do {
         int shift = 0;
         int mretv = menu ( list, length, input, dmenu_prompt, NULL, &shift,
@@ -82,7 +94,12 @@ int dmenu_switcher_dialog ( char **input )
         // We normally do not want to restart the loop.
         restart = FALSE;
         if ( mretv == MENU_OK && list[selected_line] != NULL ) {
-            fputs ( list[selected_line], stdout );
+            if ( number_mode ) {
+                fprintf ( stdout, "%d", selected_line );
+            }
+            else {
+                fputs ( list[selected_line], stdout );
+            }
             fputc ( '\n', stdout );
             fflush ( stdout );
             if ( shift ) {
@@ -93,9 +110,11 @@ int dmenu_switcher_dialog ( char **input )
             retv = TRUE;
         }
         else if ( mretv == MENU_CUSTOM_INPUT && *input != NULL && *input[0] != '\0' ) {
-            fputs ( *input, stdout );
-            fputc ( '\n', stdout );
-            fflush ( stdout );
+            if ( !number_mode ) {
+                fputs ( *input, stdout );
+                fputc ( '\n', stdout );
+                fflush ( stdout );
+            }
             if ( shift ) {
                 restart = TRUE;
                 // Move to next line.

source/rofi.c

@@ -1582,8 +1582,8 @@ static void setup_switchers ( void )
 /**
  * Keep a copy of arc, argv around, so we can use the same parsing method
  */
-static int  stored_argc;
-static char **stored_argv;
+int  stored_argc;
+char **stored_argv;
 
 /**
  * @param display Pointer to the X connection to use.
@@ -1739,9 +1739,6 @@ int main ( int argc, char *argv[] )
     if ( dmenu_mode == TRUE ) {
         // force off sidebar mode:
         config.sidebar_mode = FALSE;
-        // Check prompt
-        find_arg_str ( argc, argv, "-p", &dmenu_prompt );
-        find_arg_int ( argc, argv, "-l", &dmenu_selected_line );
         int retv = run_dmenu ();
 
         // User canceled the operation.