Move the move_cursor and writeb functions to output.c, and make the output function used by output.c configurable

darcs-hash:20060216134025-ac50b-360d4816ee2c3f2ffdc8e5660502cb97b31d699e.gz

output.h

@@ -80,7 +80,9 @@ void set_color( int c, int c2 );
 
 /**
    Write a char * narrow string to FD 1, needed for the terminfo
-   strings.
+   strings. This is usually just a wrapper aound tputs, using writeb
+   as the sending function. But a weird bug on PPC Linux means that on
+   this platform, write is instead used directly.
 */
 int writembs( char *str );
 
@@ -116,4 +118,24 @@ int writespace( int c );
 */
 int output_color_code( const wchar_t *val );
 
+/**
+   perm_left_cursor and parm_right_cursor don't seem to be defined
+   very often so we use cursor_left and cursor_right as a fallback.
+*/
+void move_cursor( int steps );
+
+/**
+   This is for writing process notification messages. Has to write to
+   stdout, so clr_eol and such functions will work correctly. Not an
+   issue since this function is only used in interactive mode anyway.
+*/
+int writeb( tputs_arg_t b );
+
+/**
+   Set the function used for writing in move_cursor, writespace and
+   set_color. By default, writembs is used.
+*/
+void output_set_writer( int (*writer)(char *) );
+
+
 #endif