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Annotation of qemu/roms/ipxe/src/hci/mucurses/ansi_screen.c, revision 1.1

1.1     ! root        1: #include <stdio.h>
        !             2: #include <curses.h>
        !             3: #include <ipxe/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: };

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