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#include <stdio.h>
#include <curses.h>
#include <ipxe/ansicol.h>
#include <ipxe/console.h>
FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
static void ansiscr_reset(struct _curses_screen *scr) __nonnull;
static void ansiscr_movetoyx(struct _curses_screen *scr,
unsigned int y, unsigned int x) __nonnull;
static void ansiscr_putc(struct _curses_screen *scr, chtype c) __nonnull;
static unsigned int saved_usage;
static void ansiscr_attrs ( struct _curses_screen *scr, attr_t attrs ) {
int bold = ( attrs & A_BOLD );
attr_t cpair = PAIR_NUMBER ( attrs );
if ( scr->attrs != attrs ) {
scr->attrs = attrs;
/* Reset attributes and set/clear bold as appropriate */
printf ( "\033[0;%dm", ( bold ? 1 : 22 ) );
/* Set foreground and background colours */
ansicol_set_pair ( cpair );
}
}
static void ansiscr_reset ( struct _curses_screen *scr ) {
/* Reset terminal attributes and clear screen */
scr->attrs = 0;
scr->curs_x = 0;
scr->curs_y = 0;
printf ( "\0330m" );
ansicol_set_pair ( CPAIR_DEFAULT );
printf ( "\033[2J" );
}
static void ansiscr_init ( struct _curses_screen *scr ) {
saved_usage = console_set_usage ( CONSOLE_USAGE_TUI );
ansiscr_reset ( scr );
}
static void ansiscr_exit ( struct _curses_screen *scr ) {
ansiscr_reset ( scr );
console_set_usage ( saved_usage );
}
static void ansiscr_erase ( struct _curses_screen *scr, attr_t attrs ) {
ansiscr_attrs ( scr, attrs );
printf ( "\033[2J" );
}
static void ansiscr_movetoyx ( struct _curses_screen *scr,
unsigned int y, unsigned int x ) {
if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) {
/* ANSI escape sequence to update cursor position */
printf ( "\033[%d;%dH", ( y + 1 ), ( x + 1 ) );
scr->curs_x = x;
scr->curs_y = y;
}
}
static void ansiscr_putc ( struct _curses_screen *scr, chtype c ) {
unsigned int character = ( c & A_CHARTEXT );
attr_t attrs = ( c & ( A_ATTRIBUTES | A_COLOR ) );
/* Update attributes if changed */
ansiscr_attrs ( scr, attrs );
/* Print the actual character */
putchar ( character );
/* Update expected cursor position */
if ( ++(scr->curs_x) == COLS ) {
scr->curs_x = 0;
++scr->curs_y;
}
}
static int ansiscr_getc ( struct _curses_screen *scr __unused ) {
return getchar();
}
static bool ansiscr_peek ( struct _curses_screen *scr __unused ) {
return iskey();
}
static void ansiscr_cursor ( struct _curses_screen *scr __unused,
int visibility ) {
printf ( "\033[?25%c", ( visibility ? 'h' : 'l' ) );
}
SCREEN _ansi_screen = {
.init = ansiscr_init,
.exit = ansiscr_exit,
.erase = ansiscr_erase,
.movetoyx = ansiscr_movetoyx,
.putc = ansiscr_putc,
.getc = ansiscr_getc,
.peek = ansiscr_peek,
.cursor = ansiscr_cursor,
};
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