diff options
author | Yang Zhang <yang.z.zhang@intel.com> | 2015-08-28 09:58:54 +0800 |
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committer | Yang Zhang <yang.z.zhang@intel.com> | 2015-09-01 12:44:00 +0800 |
commit | e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch) | |
tree | 66b09f592c55df2878107a468a91d21506104d3f /qemu/roms/ipxe/src/hci/mucurses/mucurses.c | |
parent | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff) |
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/hci/mucurses/mucurses.c')
-rw-r--r-- | qemu/roms/ipxe/src/hci/mucurses/mucurses.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/qemu/roms/ipxe/src/hci/mucurses/mucurses.c b/qemu/roms/ipxe/src/hci/mucurses/mucurses.c new file mode 100644 index 000000000..b67445baf --- /dev/null +++ b/qemu/roms/ipxe/src/hci/mucurses/mucurses.c @@ -0,0 +1,156 @@ +#include <curses.h> +#include "mucurses.h" + +/** @file + * + * MuCurses core functions + * + */ + +FILE_LICENCE ( GPL2_OR_LATER ); + +static void _wupdcurs ( WINDOW *win ) __nonnull; +void _wputch ( WINDOW *win, chtype ch, int wrap ) __nonnull; +void _wputc ( WINDOW *win, char c, int wrap ) __nonnull; +void _wcursback ( WINDOW *win ) __nonnull; +void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n ) __nonnull; +void _wputstr ( WINDOW *win, const char *str, int wrap, int n ) __nonnull; +int wmove ( WINDOW *win, int y, int x ) __nonnull; + +WINDOW _stdscr = { + .attrs = A_DEFAULT, + .ori_y = 0, + .ori_x = 0, + .curs_y = 0, + .curs_x = 0, + .scr = &_ansi_screen, +}; + +/* + * Primitives + */ + +/** + * Update cursor position + * + * @v *win window in which to update position + */ +static void _wupdcurs ( WINDOW *win ) { + win->scr->movetoyx ( win->scr, win->ori_y + win->curs_y, + win->ori_x + win->curs_x ); +} + +/** + * Write a single character rendition to a window + * + * @v *win window in which to write + * @v ch character rendition to write + * @v wrap wrap "switch" + */ +void _wputch ( WINDOW *win, chtype ch, int wrap ) { + /* make sure we set the screen cursor to the right position + first! */ + _wupdcurs(win); + win->scr->putc(win->scr, ch); + if ( ++(win->curs_x) - win->width == 0 ) { + if ( wrap == WRAP ) { + win->curs_x = 0; + /* specification says we should really scroll, + but we have no buffer to scroll with, so we + can only overwrite back at the beginning of + the window */ + if ( ++(win->curs_y) - win->height == 0 ) + win->curs_y = 0; + } else { + (win->curs_x)--; + } + } +} + +/** + * Write a single character to a window + * + * @v *win window in which to write + * @v c character rendition to write + * @v wrap wrap "switch" + */ +void _wputc ( WINDOW *win, char c, int wrap ) { + _wputch ( win, ( ( ( unsigned char ) c ) | win->attrs ), wrap ); +} + +/** + * Retreat the cursor back one position (useful for a whole host of + * ops) + * + * @v *win window in which to retreat + */ +void _wcursback ( WINDOW *win ) { + if ( win->curs_x == 0 ) { + if ( win->curs_y == 0 ) + win->curs_y = win->height - 1; + win->curs_x = win->width = 1; + } else { + win->curs_x--; + } + + _wupdcurs(win); +} + +/** + * Write a chtype string to a window + * + * @v *win window in which to write + * @v *chstr chtype string + * @v wrap wrap "switch" + * @v n write at most n chtypes + */ +void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n ) { + for ( ; *chstr && n-- ; chstr++ ) { + _wputch(win,*chstr,wrap); + } +} + +/** + * Write a standard c-style string to a window + * + * @v *win window in which to write + * @v *str string + * @v wrap wrap "switch" + * @v n write at most n chars from *str + */ +void _wputstr ( WINDOW *win, const char *str, int wrap, int n ) { + for ( ; *str && n-- ; str++ ) { + _wputc ( win, *str, wrap ); + } +} + +/** + * Move a window's cursor to the specified position + * + * @v *win window to be operated on + * @v y Y position + * @v x X position + * @ret rc return status code + */ +int wmove ( WINDOW *win, int y, int x ) { + /* chech for out-of-bounds errors */ + if ( ( (unsigned)y >= win->height ) || + ( (unsigned)x >= win->width ) ) { + return ERR; + } + + win->curs_y = y; + win->curs_x = x; + _wupdcurs(win); + return OK; +} + +/** + * Set cursor visibility + * + * @v visibility cursor visibility + */ +int curs_set ( int visibility ) { + stdscr->scr->cursor ( stdscr->scr, visibility ); + return OK; +} |