1 #include <stdio.h> 2 #include <curses.h> 3 #include <console.h> 4 5 FILE_LICENCE ( GPL2_OR_LATER ); 6 7 static void ansiscr_reset(struct _curses_screen *scr) __nonnull; 8 static void ansiscr_movetoyx(struct _curses_screen *scr, 9 unsigned int y, unsigned int x) __nonnull; 10 static void ansiscr_putc(struct _curses_screen *scr, chtype c) __nonnull; 11 12 unsigned short _COLS = 80; 13 unsigned short _LINES = 24; 14 15 static void ansiscr_reset ( struct _curses_screen *scr ) { 16 /* Reset terminal attributes and clear screen */ 17 scr->attrs = 0; 18 scr->curs_x = 0; 19 scr->curs_y = 0; 20 printf ( "\033[0m" ); 21 } 22 23 static void ansiscr_movetoyx ( struct _curses_screen *scr, 24 unsigned int y, unsigned int x ) { 25 if ( ( x != scr->curs_x ) || ( y != scr->curs_y ) ) { 26 /* ANSI escape sequence to update cursor position */ 27 printf ( "\033[%d;%dH", ( y + 1 ), ( x + 1 ) ); 28 scr->curs_x = x; 29 scr->curs_y = y; 30 } 31 } 32 33 static void ansiscr_putc ( struct _curses_screen *scr, chtype c ) { 34 unsigned int character = ( c & A_CHARTEXT ); 35 attr_t attrs = ( c & ( A_ATTRIBUTES | A_COLOR ) ); 36 int bold = ( attrs & A_BOLD ); 37 attr_t cpair = PAIR_NUMBER ( attrs ); 38 short fcol; 39 short bcol; 40 41 /* Update attributes if changed */ 42 if ( attrs != scr->attrs ) { 43 scr->attrs = attrs; 44 pair_content ( cpair, &fcol, &bcol ); 45 /* ANSI escape sequence to update character attributes */ 46 printf ( "\033[0;%d;3%d;4%dm", ( bold ? 1 : 22 ), fcol, bcol ); 47 } 48 49 /* Print the actual character */ 50 putchar ( character ); 51 52 /* Update expected cursor position */ 53 if ( ++(scr->curs_x) == _COLS ) { 54 scr->curs_x = 0; 55 ++scr->curs_y; 56 } 57 } 58 59 static int ansiscr_getc ( struct _curses_screen *scr __unused ) { 60 return getchar(); 61 } 62 63 static bool ansiscr_peek ( struct _curses_screen *scr __unused ) { 64 return iskey(); 65 } 66 67 SCREEN _ansi_screen = { 68 .init = ansiscr_reset, 69 .exit = ansiscr_reset, 70 .movetoyx = ansiscr_movetoyx, 71 .putc = ansiscr_putc, 72 .getc = ansiscr_getc, 73 .peek = ansiscr_peek, 74 }; 75
