469 lines
14 KiB
C
469 lines
14 KiB
C
/*
|
|
* GRUB -- GRand Unified Bootloader
|
|
* Copyright (C) 2002,2003,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
|
|
*
|
|
* GRUB is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* GRUB is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef GRUB_TERM_HEADER
|
|
#define GRUB_TERM_HEADER 1
|
|
|
|
/* Internal codes used by GRUB to represent terminal input. */
|
|
#define GRUB_TERM_LEFT 2
|
|
#define GRUB_TERM_RIGHT 6
|
|
#define GRUB_TERM_UP 16
|
|
#define GRUB_TERM_DOWN 14
|
|
#define GRUB_TERM_HOME 1
|
|
#define GRUB_TERM_END 5
|
|
#define GRUB_TERM_DC 4
|
|
#define GRUB_TERM_PPAGE 7
|
|
#define GRUB_TERM_NPAGE 3
|
|
#define GRUB_TERM_ESC '\e'
|
|
#define GRUB_TERM_TAB '\t'
|
|
#define GRUB_TERM_BACKSPACE 8
|
|
|
|
#ifndef ASM_FILE
|
|
|
|
#include <grub/err.h>
|
|
#include <grub/symbol.h>
|
|
#include <grub/types.h>
|
|
#include <grub/unicode.h>
|
|
#include <grub/list.h>
|
|
|
|
/* These are used to represent the various color states we use. */
|
|
typedef enum
|
|
{
|
|
/* The color used to display all text that does not use the
|
|
user defined colors below. */
|
|
GRUB_TERM_COLOR_STANDARD,
|
|
/* The user defined colors for normal text. */
|
|
GRUB_TERM_COLOR_NORMAL,
|
|
/* The user defined colors for highlighted text. */
|
|
GRUB_TERM_COLOR_HIGHLIGHT
|
|
}
|
|
grub_term_color_state;
|
|
|
|
/* Flags for representing the capabilities of a terminal. */
|
|
/* Some notes about the flags:
|
|
- These flags are used by higher-level functions but not terminals
|
|
themselves.
|
|
- If a terminal is dumb, you may assume that only putchar, getkey and
|
|
checkkey are called.
|
|
- Some fancy features (setcolorstate, setcolor and setcursor) can be set
|
|
to NULL. */
|
|
|
|
/* Set when input characters shouldn't be echoed back. */
|
|
#define GRUB_TERM_NO_ECHO (1 << 0)
|
|
/* Set when the editing feature should be disabled. */
|
|
#define GRUB_TERM_NO_EDIT (1 << 1)
|
|
/* Set when the terminal cannot do fancy things. */
|
|
#define GRUB_TERM_DUMB (1 << 2)
|
|
/* Which encoding does terminal expect stream to be. */
|
|
#define GRUB_TERM_CODE_TYPE_SHIFT 3
|
|
#define GRUB_TERM_CODE_TYPE_MASK (7 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
/* Only ASCII characters accepted. */
|
|
#define GRUB_TERM_CODE_TYPE_ASCII (0 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
/* Expects CP-437 characters (ASCII + pseudographics). */
|
|
#define GRUB_TERM_CODE_TYPE_CP437 (1 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
/* UTF-8 stream in logical order. Usually used for terminals
|
|
which just forward the stream to another computer. */
|
|
#define GRUB_TERM_CODE_TYPE_UTF8_LOGICAL (2 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
/* UTF-8 in visual order. Like UTF-8 logical but for buggy endpoints. */
|
|
#define GRUB_TERM_CODE_TYPE_UTF8_VISUAL (3 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
/* Glyph description in visual order. */
|
|
#define GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS (4 << GRUB_TERM_CODE_TYPE_SHIFT)
|
|
|
|
|
|
/* Bitmasks for modifier keys returned by grub_getkeystatus. */
|
|
#define GRUB_TERM_STATUS_SHIFT (1 << 0)
|
|
#define GRUB_TERM_STATUS_CTRL (1 << 1)
|
|
#define GRUB_TERM_STATUS_ALT (1 << 2)
|
|
|
|
/* Menu-related geometrical constants. */
|
|
|
|
/* The number of lines of "GRUB version..." at the top. */
|
|
#define GRUB_TERM_INFO_HEIGHT 1
|
|
|
|
/* The number of columns/lines between messages/borders/etc. */
|
|
#define GRUB_TERM_MARGIN 1
|
|
|
|
/* The number of columns of scroll information. */
|
|
#define GRUB_TERM_SCROLL_WIDTH 1
|
|
|
|
/* The Y position of the top border. */
|
|
#define GRUB_TERM_TOP_BORDER_Y (GRUB_TERM_MARGIN + GRUB_TERM_INFO_HEIGHT \
|
|
+ GRUB_TERM_MARGIN)
|
|
|
|
/* The X position of the left border. */
|
|
#define GRUB_TERM_LEFT_BORDER_X GRUB_TERM_MARGIN
|
|
|
|
/* The number of lines of messages at the bottom. */
|
|
#define GRUB_TERM_MESSAGE_HEIGHT 8
|
|
|
|
/* The Y position of the first entry. */
|
|
#define GRUB_TERM_FIRST_ENTRY_Y (GRUB_TERM_TOP_BORDER_Y + 1)
|
|
|
|
struct grub_term_input
|
|
{
|
|
/* The next terminal. */
|
|
struct grub_term_input *next;
|
|
|
|
/* The terminal name. */
|
|
const char *name;
|
|
|
|
/* Initialize the terminal. */
|
|
grub_err_t (*init) (struct grub_term_input *term);
|
|
|
|
/* Clean up the terminal. */
|
|
grub_err_t (*fini) (struct grub_term_input *term);
|
|
|
|
/* Check if any input character is available. */
|
|
int (*checkkey) (struct grub_term_input *term);
|
|
|
|
/* Get a character. */
|
|
int (*getkey) (struct grub_term_input *term);
|
|
|
|
/* Get keyboard modifier status. */
|
|
int (*getkeystatus) (struct grub_term_input *term);
|
|
|
|
void *data;
|
|
};
|
|
typedef struct grub_term_input *grub_term_input_t;
|
|
|
|
struct grub_term_output
|
|
{
|
|
/* The next terminal. */
|
|
struct grub_term_output *next;
|
|
|
|
/* The terminal name. */
|
|
const char *name;
|
|
|
|
/* Initialize the terminal. */
|
|
grub_err_t (*init) (struct grub_term_output *term);
|
|
|
|
/* Clean up the terminal. */
|
|
grub_err_t (*fini) (struct grub_term_output *term);
|
|
|
|
/* Put a character. C is encoded in Unicode. */
|
|
void (*putchar) (struct grub_term_output *term,
|
|
const struct grub_unicode_glyph *c);
|
|
|
|
/* Get the number of columns occupied by a given character C. C is
|
|
encoded in Unicode. */
|
|
grub_ssize_t (*getcharwidth) (struct grub_term_output *term,
|
|
const struct grub_unicode_glyph *c);
|
|
|
|
/* Get the screen size. The return value is ((Width << 8) | Height). */
|
|
grub_uint16_t (*getwh) (struct grub_term_output *term);
|
|
|
|
/* Get the cursor position. The return value is ((X << 8) | Y). */
|
|
grub_uint16_t (*getxy) (struct grub_term_output *term);
|
|
|
|
/* Go to the position (X, Y). */
|
|
void (*gotoxy) (struct grub_term_output *term,
|
|
grub_uint8_t x, grub_uint8_t y);
|
|
|
|
/* Clear the screen. */
|
|
void (*cls) (struct grub_term_output *term);
|
|
|
|
/* Set the current color to be used */
|
|
void (*setcolorstate) (struct grub_term_output *term,
|
|
grub_term_color_state state);
|
|
|
|
/* Turn on/off the cursor. */
|
|
void (*setcursor) (struct grub_term_output *term, int on);
|
|
|
|
/* Update the screen. */
|
|
void (*refresh) (struct grub_term_output *term);
|
|
|
|
/* The feature flags defined above. */
|
|
grub_uint32_t flags;
|
|
|
|
/* Current color state. */
|
|
grub_uint8_t normal_color;
|
|
grub_uint8_t highlight_color;
|
|
|
|
void *data;
|
|
};
|
|
typedef struct grub_term_output *grub_term_output_t;
|
|
|
|
#define GRUB_TERM_DEFAULT_NORMAL_COLOR 0x07
|
|
#define GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR 0x70
|
|
#define GRUB_TERM_DEFAULT_STANDARD_COLOR 0x07
|
|
|
|
extern struct grub_term_output *EXPORT_VAR(grub_term_outputs_disabled);
|
|
extern struct grub_term_input *EXPORT_VAR(grub_term_inputs_disabled);
|
|
extern struct grub_term_output *EXPORT_VAR(grub_term_outputs);
|
|
extern struct grub_term_input *EXPORT_VAR(grub_term_inputs);
|
|
|
|
static inline void
|
|
grub_term_register_input (const char *name __attribute__ ((unused)),
|
|
grub_term_input_t term)
|
|
{
|
|
if (grub_term_inputs)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs_disabled),
|
|
GRUB_AS_LIST (term));
|
|
else
|
|
{
|
|
/* If this is the first terminal, enable automatically. */
|
|
if (! term->init || term->init (term) == GRUB_ERR_NONE)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs), GRUB_AS_LIST (term));
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
grub_term_register_input_active (const char *name __attribute__ ((unused)),
|
|
grub_term_input_t term)
|
|
{
|
|
if (! term->init || term->init (term) == GRUB_ERR_NONE)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs), GRUB_AS_LIST (term));
|
|
}
|
|
|
|
static inline void
|
|
grub_term_register_output (const char *name __attribute__ ((unused)),
|
|
grub_term_output_t term)
|
|
{
|
|
if (grub_term_outputs)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs_disabled),
|
|
GRUB_AS_LIST (term));
|
|
else
|
|
{
|
|
/* If this is the first terminal, enable automatically. */
|
|
if (! term->init || term->init (term) == GRUB_ERR_NONE)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs),
|
|
GRUB_AS_LIST (term));
|
|
}
|
|
}
|
|
|
|
static inline void
|
|
grub_term_register_output_active (const char *name __attribute__ ((unused)),
|
|
grub_term_output_t term)
|
|
{
|
|
if (! term->init || term->init (term) == GRUB_ERR_NONE)
|
|
grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs),
|
|
GRUB_AS_LIST (term));
|
|
}
|
|
|
|
static inline void
|
|
grub_term_unregister_input (grub_term_input_t term)
|
|
{
|
|
grub_list_remove (GRUB_AS_LIST_P (&grub_term_inputs), GRUB_AS_LIST (term));
|
|
grub_list_remove (GRUB_AS_LIST_P (&grub_term_inputs_disabled),
|
|
GRUB_AS_LIST (term));
|
|
}
|
|
|
|
static inline void
|
|
grub_term_unregister_output (grub_term_output_t term)
|
|
{
|
|
grub_list_remove (GRUB_AS_LIST_P (&grub_term_outputs), GRUB_AS_LIST (term));
|
|
grub_list_remove (GRUB_AS_LIST_P (&(grub_term_outputs_disabled)),
|
|
GRUB_AS_LIST (term));
|
|
}
|
|
|
|
#define FOR_ACTIVE_TERM_INPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_inputs))
|
|
#define FOR_DISABLED_TERM_INPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_inputs_disabled))
|
|
#define FOR_ACTIVE_TERM_OUTPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_outputs))
|
|
#define FOR_DISABLED_TERM_OUTPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_outputs_disabled))
|
|
|
|
void grub_putcode (grub_uint32_t code, struct grub_term_output *term);
|
|
int EXPORT_FUNC(grub_getkey) (void);
|
|
int EXPORT_FUNC(grub_checkkey) (void);
|
|
int EXPORT_FUNC(grub_getkeystatus) (void);
|
|
void grub_cls (void);
|
|
void EXPORT_FUNC(grub_refresh) (void);
|
|
void grub_puts_terminal (const char *str, struct grub_term_output *term);
|
|
grub_uint16_t *grub_term_save_pos (void);
|
|
void grub_term_restore_pos (grub_uint16_t *pos);
|
|
|
|
static inline unsigned grub_term_width (struct grub_term_output *term)
|
|
{
|
|
return ((term->getwh(term)&0xFF00)>>8);
|
|
}
|
|
|
|
static inline unsigned grub_term_height (struct grub_term_output *term)
|
|
{
|
|
return (term->getwh(term)&0xFF);
|
|
}
|
|
|
|
/* The width of the border. */
|
|
static inline unsigned
|
|
grub_term_border_width (struct grub_term_output *term)
|
|
{
|
|
return grub_term_width (term) - GRUB_TERM_MARGIN * 3 - GRUB_TERM_SCROLL_WIDTH;
|
|
}
|
|
|
|
/* The max column number of an entry. The last "-1" is for a
|
|
continuation marker. */
|
|
static inline int
|
|
grub_term_entry_width (struct grub_term_output *term)
|
|
{
|
|
return grub_term_border_width (term) - 2 - GRUB_TERM_MARGIN * 2 - 1;
|
|
}
|
|
|
|
/* The height of the border. */
|
|
|
|
static inline unsigned
|
|
grub_term_border_height (struct grub_term_output *term)
|
|
{
|
|
return grub_term_height (term) - GRUB_TERM_TOP_BORDER_Y
|
|
- GRUB_TERM_MESSAGE_HEIGHT;
|
|
}
|
|
|
|
/* The number of entries shown at a time. */
|
|
static inline int
|
|
grub_term_num_entries (struct grub_term_output *term)
|
|
{
|
|
return grub_term_border_height (term) - 2;
|
|
}
|
|
|
|
static inline int
|
|
grub_term_cursor_x (struct grub_term_output *term)
|
|
{
|
|
return (GRUB_TERM_LEFT_BORDER_X + grub_term_border_width (term)
|
|
- GRUB_TERM_MARGIN - 1);
|
|
}
|
|
|
|
static inline grub_uint16_t
|
|
grub_term_getxy (struct grub_term_output *term)
|
|
{
|
|
return term->getxy (term);
|
|
}
|
|
|
|
static inline void
|
|
grub_term_refresh (struct grub_term_output *term)
|
|
{
|
|
if (term->refresh)
|
|
term->refresh (term);
|
|
}
|
|
|
|
static inline void
|
|
grub_term_gotoxy (struct grub_term_output *term, grub_uint8_t x, grub_uint8_t y)
|
|
{
|
|
term->gotoxy (term, x, y);
|
|
}
|
|
|
|
static inline void
|
|
grub_term_setcolorstate (struct grub_term_output *term,
|
|
grub_term_color_state state)
|
|
{
|
|
if (term->setcolorstate)
|
|
term->setcolorstate (term, state);
|
|
}
|
|
|
|
static inline void
|
|
grub_setcolorstate (grub_term_color_state state)
|
|
{
|
|
struct grub_term_output *term;
|
|
|
|
FOR_ACTIVE_TERM_OUTPUTS(term)
|
|
grub_term_setcolorstate (term, state);
|
|
}
|
|
|
|
/* Set the normal color and the highlight color. The format of each
|
|
color is VGA's. */
|
|
static inline void
|
|
grub_term_setcolor (struct grub_term_output *term,
|
|
grub_uint8_t normal_color, grub_uint8_t highlight_color)
|
|
{
|
|
term->normal_color = normal_color;
|
|
term->highlight_color = highlight_color;
|
|
}
|
|
|
|
/* Turn on/off the cursor. */
|
|
static inline void
|
|
grub_term_setcursor (struct grub_term_output *term, int on)
|
|
{
|
|
if (term->setcursor)
|
|
term->setcursor (term, on);
|
|
}
|
|
|
|
static inline void
|
|
grub_term_cls (struct grub_term_output *term)
|
|
{
|
|
if (term->cls)
|
|
(term->cls) (term);
|
|
else
|
|
{
|
|
grub_putcode ('\n', term);
|
|
grub_term_refresh (term);
|
|
}
|
|
}
|
|
|
|
#ifdef HAVE_UNIFONT_WIDTHSPEC
|
|
|
|
grub_ssize_t
|
|
grub_unicode_estimate_width (const struct grub_unicode_glyph *c);
|
|
|
|
#else
|
|
|
|
static inline grub_ssize_t
|
|
grub_unicode_estimate_width (const struct grub_unicode_glyph *c __attribute__ ((unused)))
|
|
{
|
|
if (grub_unicode_get_comb_type (c->base))
|
|
return 0;
|
|
return 1;
|
|
}
|
|
|
|
#endif
|
|
|
|
static inline grub_ssize_t
|
|
grub_term_getcharwidth (struct grub_term_output *term,
|
|
const struct grub_unicode_glyph *c)
|
|
{
|
|
if (term->getcharwidth)
|
|
return term->getcharwidth (term, c);
|
|
else if (((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
== GRUB_TERM_CODE_TYPE_UTF8_LOGICAL)
|
|
|| ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
|
|
|| ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
|
|
== GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS))
|
|
return grub_unicode_estimate_width (c);
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static inline void
|
|
grub_term_getcolor (struct grub_term_output *term,
|
|
grub_uint8_t *normal_color, grub_uint8_t *highlight_color)
|
|
{
|
|
*normal_color = term->normal_color;
|
|
*highlight_color = term->highlight_color;
|
|
}
|
|
|
|
struct grub_term_autoload
|
|
{
|
|
struct grub_term_autoload *next;
|
|
char *name;
|
|
char *modname;
|
|
};
|
|
|
|
extern struct grub_term_autoload *grub_term_input_autoload;
|
|
extern struct grub_term_autoload *grub_term_output_autoload;
|
|
|
|
static inline void
|
|
grub_print_spaces (struct grub_term_output *term, int number_spaces)
|
|
{
|
|
while (--number_spaces >= 0)
|
|
grub_putcode (' ', term);
|
|
}
|
|
|
|
|
|
/* For convenience. */
|
|
#define GRUB_TERM_ASCII_CHAR(c) ((c) & 0xff)
|
|
|
|
#endif /* ! ASM_FILE */
|
|
|
|
#endif /* ! GRUB_TERM_HEADER */
|