print.c

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#include <curses.h>
#include <stdio.h>
#include <stddef.h>
#include <gpxe/vsprintf.h>
#include "mucurses.h"

/** @file
 *
 * MuCurses printing functions
 *
 */

FILE_LICENCE ( GPL2_OR_LATER );

/**
 * Add a single-byte character and rendition to a window and advance
 * the cursor
 *
 * @v *win      window to be rendered in
 * @v ch        character to be added at cursor
 * @ret rc      return status code
 */
int waddch ( WINDOW *win, const chtype ch ) {
        _wputch( win, ch, WRAP );
        return OK;
}

/**
 * Add string of single-byte characters to a window
 *
 * @v *win      window to be rendered in
 * @v *str      standard c-style string
 * @v n         max number of chars from string to render
 * @ret rc      return status code
 */
int waddnstr ( WINDOW *win, const char *str, int n ) {
        _wputstr( win, str, WRAP, n );
        return OK;
}

struct printw_context {
        struct printf_context ctx;
        WINDOW *win;
};

static void _printw_handler ( struct printf_context *ctx, unsigned int c ) {
        struct printw_context *wctx =
                container_of ( ctx, struct printw_context, ctx );

        _wputch( wctx->win, c | wctx->win->attrs, WRAP );
}

/**
 * Print formatted output in a window
 *
 * @v *win      subject window
 * @v *fmt      formatted string
 * @v varglist  argument list
 * @ret rc      return status code
 */
int vw_printw ( WINDOW *win, const char *fmt, va_list varglist ) {
        struct printw_context wctx;

        wctx.win = win;
        wctx.ctx.handler = _printw_handler;
        vcprintf ( &(wctx.ctx), fmt, varglist );
        return OK;
}

/**
 * Print formatted output to a window
 *
 * @v *win      subject window
 * @v *fmt      formatted string
 * @v ...       string arguments
 * @ret rc      return status code
 */
int wprintw ( WINDOW *win, const char *fmt, ... ) {
        va_list args;
        int i;

        va_start ( args, fmt );
        i = vw_printw ( win, fmt, args );
        va_end ( args );
        return i;
}