449 lines
14 KiB
C
449 lines
14 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2002,2003,2005,2007,2008,2009,2010 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef GRUB_TERM_HEADER
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#define GRUB_TERM_HEADER 1
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#define GRUB_TERM_NO_KEY 0
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/* Internal codes used by GRUB to represent terminal input. */
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/* Only for keys otherwise not having shifted modification. */
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#define GRUB_TERM_SHIFT 0x01000000
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#define GRUB_TERM_CTRL 0x02000000
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#define GRUB_TERM_ALT 0x04000000
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/* Keys without associated character. */
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#define GRUB_TERM_EXTENDED 0x00800000
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#define GRUB_TERM_KEY_MASK 0x00ffffff
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#define GRUB_TERM_KEY_LEFT (GRUB_TERM_EXTENDED | 0x4b)
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#define GRUB_TERM_KEY_RIGHT (GRUB_TERM_EXTENDED | 0x4d)
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#define GRUB_TERM_KEY_UP (GRUB_TERM_EXTENDED | 0x48)
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#define GRUB_TERM_KEY_DOWN (GRUB_TERM_EXTENDED | 0x50)
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#define GRUB_TERM_KEY_HOME (GRUB_TERM_EXTENDED | 0x47)
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#define GRUB_TERM_KEY_END (GRUB_TERM_EXTENDED | 0x4f)
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#define GRUB_TERM_KEY_DC (GRUB_TERM_EXTENDED | 0x53)
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#define GRUB_TERM_KEY_PPAGE (GRUB_TERM_EXTENDED | 0x49)
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#define GRUB_TERM_KEY_NPAGE (GRUB_TERM_EXTENDED | 0x51)
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#define GRUB_TERM_KEY_F1 (GRUB_TERM_EXTENDED | 0x3b)
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#define GRUB_TERM_KEY_F2 (GRUB_TERM_EXTENDED | 0x3c)
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#define GRUB_TERM_KEY_F3 (GRUB_TERM_EXTENDED | 0x3d)
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#define GRUB_TERM_KEY_F4 (GRUB_TERM_EXTENDED | 0x3e)
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#define GRUB_TERM_KEY_F5 (GRUB_TERM_EXTENDED | 0x3f)
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#define GRUB_TERM_KEY_F6 (GRUB_TERM_EXTENDED | 0x40)
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#define GRUB_TERM_KEY_F7 (GRUB_TERM_EXTENDED | 0x41)
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#define GRUB_TERM_KEY_F8 (GRUB_TERM_EXTENDED | 0x42)
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#define GRUB_TERM_KEY_F9 (GRUB_TERM_EXTENDED | 0x43)
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#define GRUB_TERM_KEY_F10 (GRUB_TERM_EXTENDED | 0x44)
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#define GRUB_TERM_KEY_F11 (GRUB_TERM_EXTENDED | 0x57)
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#define GRUB_TERM_KEY_F12 (GRUB_TERM_EXTENDED | 0x58)
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#define GRUB_TERM_KEY_INSERT (GRUB_TERM_EXTENDED | 0x52)
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#define GRUB_TERM_KEY_CENTER (GRUB_TERM_EXTENDED | 0x4c)
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#define GRUB_TERM_ESC '\e'
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#define GRUB_TERM_TAB '\t'
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#define GRUB_TERM_BACKSPACE '\b'
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#ifndef ASM_FILE
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#include <grub/err.h>
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#include <grub/symbol.h>
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#include <grub/types.h>
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#include <grub/unicode.h>
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#include <grub/list.h>
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/* These are used to represent the various color states we use. */
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typedef enum
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{
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/* The color used to display all text that does not use the
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user defined colors below. */
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GRUB_TERM_COLOR_STANDARD,
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/* The user defined colors for normal text. */
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GRUB_TERM_COLOR_NORMAL,
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/* The user defined colors for highlighted text. */
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GRUB_TERM_COLOR_HIGHLIGHT
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}
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grub_term_color_state;
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/* Flags for representing the capabilities of a terminal. */
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/* Some notes about the flags:
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- These flags are used by higher-level functions but not terminals
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themselves.
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- If a terminal is dumb, you may assume that only putchar, getkey and
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checkkey are called.
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- Some fancy features (setcolorstate, setcolor and setcursor) can be set
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to NULL. */
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/* Set when input characters shouldn't be echoed back. */
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#define GRUB_TERM_NO_ECHO (1 << 0)
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/* Set when the editing feature should be disabled. */
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#define GRUB_TERM_NO_EDIT (1 << 1)
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/* Set when the terminal cannot do fancy things. */
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#define GRUB_TERM_DUMB (1 << 2)
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/* Which encoding does terminal expect stream to be. */
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#define GRUB_TERM_CODE_TYPE_SHIFT 3
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#define GRUB_TERM_CODE_TYPE_MASK (7 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* Only ASCII characters accepted. */
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#define GRUB_TERM_CODE_TYPE_ASCII (0 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* Expects CP-437 characters (ASCII + pseudographics). */
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#define GRUB_TERM_CODE_TYPE_CP437 (1 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* UTF-8 stream in logical order. Usually used for terminals
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which just forward the stream to another computer. */
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#define GRUB_TERM_CODE_TYPE_UTF8_LOGICAL (2 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* UTF-8 in visual order. Like UTF-8 logical but for buggy endpoints. */
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#define GRUB_TERM_CODE_TYPE_UTF8_VISUAL (3 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* Glyph description in visual order. */
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#define GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS (4 << GRUB_TERM_CODE_TYPE_SHIFT)
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/* Bitmasks for modifier keys returned by grub_getkeystatus. */
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#define GRUB_TERM_STATUS_RSHIFT (1 << 0)
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#define GRUB_TERM_STATUS_LSHIFT (1 << 1)
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#define GRUB_TERM_STATUS_RCTRL (1 << 2)
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#define GRUB_TERM_STATUS_RALT (1 << 3)
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#define GRUB_TERM_STATUS_SCROLL (1 << 4)
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#define GRUB_TERM_STATUS_NUM (1 << 5)
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#define GRUB_TERM_STATUS_CAPS (1 << 6)
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#define GRUB_TERM_STATUS_LCTRL (1 << 8)
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#define GRUB_TERM_STATUS_LALT (1 << 9)
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/* Menu-related geometrical constants. */
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/* The number of columns/lines between messages/borders/etc. */
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#define GRUB_TERM_MARGIN 1
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/* The number of columns of scroll information. */
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#define GRUB_TERM_SCROLL_WIDTH 1
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struct grub_term_input
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{
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/* The next terminal. */
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struct grub_term_input *next;
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struct grub_term_input **prev;
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/* The terminal name. */
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const char *name;
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/* Initialize the terminal. */
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grub_err_t (*init) (struct grub_term_input *term);
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/* Clean up the terminal. */
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grub_err_t (*fini) (struct grub_term_input *term);
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/* Get a character if any input character is available. Otherwise return -1 */
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int (*getkey) (struct grub_term_input *term);
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/* Get keyboard modifier status. */
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int (*getkeystatus) (struct grub_term_input *term);
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void *data;
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};
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typedef struct grub_term_input *grub_term_input_t;
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struct grub_term_output
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{
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/* The next terminal. */
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struct grub_term_output *next;
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struct grub_term_output **prev;
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/* The terminal name. */
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const char *name;
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/* Initialize the terminal. */
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grub_err_t (*init) (struct grub_term_output *term);
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/* Clean up the terminal. */
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grub_err_t (*fini) (struct grub_term_output *term);
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/* Put a character. C is encoded in Unicode. */
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void (*putchar) (struct grub_term_output *term,
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const struct grub_unicode_glyph *c);
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/* Get the number of columns occupied by a given character C. C is
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encoded in Unicode. */
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grub_ssize_t (*getcharwidth) (struct grub_term_output *term,
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const struct grub_unicode_glyph *c);
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/* Get the screen size. The return value is ((Width << 8) | Height). */
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grub_uint16_t (*getwh) (struct grub_term_output *term);
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/* Get the cursor position. The return value is ((X << 8) | Y). */
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grub_uint16_t (*getxy) (struct grub_term_output *term);
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/* Go to the position (X, Y). */
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void (*gotoxy) (struct grub_term_output *term,
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grub_uint8_t x, grub_uint8_t y);
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/* Clear the screen. */
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void (*cls) (struct grub_term_output *term);
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/* Set the current color to be used */
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void (*setcolorstate) (struct grub_term_output *term,
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grub_term_color_state state);
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/* Turn on/off the cursor. */
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void (*setcursor) (struct grub_term_output *term, int on);
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/* Update the screen. */
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void (*refresh) (struct grub_term_output *term);
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/* gfxterm only: put in fullscreen mode. */
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grub_err_t (*fullscreen) (void);
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/* The feature flags defined above. */
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grub_uint32_t flags;
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void *data;
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};
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typedef struct grub_term_output *grub_term_output_t;
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#define GRUB_TERM_DEFAULT_NORMAL_COLOR 0x07
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#define GRUB_TERM_DEFAULT_HIGHLIGHT_COLOR 0x70
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#define GRUB_TERM_DEFAULT_STANDARD_COLOR 0x07
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/* Current color state. */
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extern grub_uint8_t EXPORT_VAR(grub_term_normal_color);
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extern grub_uint8_t EXPORT_VAR(grub_term_highlight_color);
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extern struct grub_term_output *EXPORT_VAR(grub_term_outputs_disabled);
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extern struct grub_term_input *EXPORT_VAR(grub_term_inputs_disabled);
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extern struct grub_term_output *EXPORT_VAR(grub_term_outputs);
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extern struct grub_term_input *EXPORT_VAR(grub_term_inputs);
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static inline void
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grub_term_register_input (const char *name __attribute__ ((unused)),
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grub_term_input_t term)
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{
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if (grub_term_inputs)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs_disabled),
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GRUB_AS_LIST (term));
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else
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{
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/* If this is the first terminal, enable automatically. */
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if (! term->init || term->init (term) == GRUB_ERR_NONE)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs), GRUB_AS_LIST (term));
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}
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}
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static inline void
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grub_term_register_input_inactive (const char *name __attribute__ ((unused)),
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grub_term_input_t term)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs_disabled),
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GRUB_AS_LIST (term));
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}
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static inline void
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grub_term_register_input_active (const char *name __attribute__ ((unused)),
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grub_term_input_t term)
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{
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if (! term->init || term->init (term) == GRUB_ERR_NONE)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_inputs), GRUB_AS_LIST (term));
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}
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static inline void
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grub_term_register_output (const char *name __attribute__ ((unused)),
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grub_term_output_t term)
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{
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if (grub_term_outputs)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs_disabled),
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GRUB_AS_LIST (term));
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else
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{
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/* If this is the first terminal, enable automatically. */
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if (! term->init || term->init (term) == GRUB_ERR_NONE)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs),
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GRUB_AS_LIST (term));
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}
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}
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static inline void
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grub_term_register_output_inactive (const char *name __attribute__ ((unused)),
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grub_term_output_t term)
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{
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grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs_disabled),
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GRUB_AS_LIST (term));
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}
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static inline void
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grub_term_register_output_active (const char *name __attribute__ ((unused)),
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grub_term_output_t term)
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{
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if (! term->init || term->init (term) == GRUB_ERR_NONE)
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grub_list_push (GRUB_AS_LIST_P (&grub_term_outputs),
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GRUB_AS_LIST (term));
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}
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static inline void
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grub_term_unregister_input (grub_term_input_t term)
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{
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grub_list_remove (GRUB_AS_LIST (term));
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grub_list_remove (GRUB_AS_LIST (term));
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}
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static inline void
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grub_term_unregister_output (grub_term_output_t term)
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{
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grub_list_remove (GRUB_AS_LIST (term));
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grub_list_remove (GRUB_AS_LIST (term));
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}
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#define FOR_ACTIVE_TERM_INPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_inputs))
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#define FOR_DISABLED_TERM_INPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_inputs_disabled))
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#define FOR_ACTIVE_TERM_OUTPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_outputs))
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#define FOR_DISABLED_TERM_OUTPUTS(var) FOR_LIST_ELEMENTS((var), (grub_term_outputs_disabled))
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void grub_putcode (grub_uint32_t code, struct grub_term_output *term);
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int EXPORT_FUNC(grub_getkey) (void);
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int EXPORT_FUNC(grub_getkey_noblock) (void);
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void grub_cls (void);
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void EXPORT_FUNC(grub_refresh) (void);
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void grub_puts_terminal (const char *str, struct grub_term_output *term);
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grub_uint16_t *grub_term_save_pos (void);
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void grub_term_restore_pos (grub_uint16_t *pos);
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static inline unsigned grub_term_width (struct grub_term_output *term)
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{
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return ((term->getwh(term)&0xFF00)>>8);
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}
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static inline unsigned grub_term_height (struct grub_term_output *term)
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{
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return (term->getwh(term)&0xFF);
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}
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static inline grub_uint16_t
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grub_term_getxy (struct grub_term_output *term)
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{
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return term->getxy (term);
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}
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static inline void
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grub_term_refresh (struct grub_term_output *term)
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{
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if (term->refresh)
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term->refresh (term);
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}
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static inline void
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grub_term_gotoxy (struct grub_term_output *term, grub_uint8_t x, grub_uint8_t y)
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{
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term->gotoxy (term, x, y);
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}
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static inline void
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grub_term_setcolorstate (struct grub_term_output *term,
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grub_term_color_state state)
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{
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if (term->setcolorstate)
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term->setcolorstate (term, state);
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}
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static inline void
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grub_setcolorstate (grub_term_color_state state)
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{
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struct grub_term_output *term;
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FOR_ACTIVE_TERM_OUTPUTS(term)
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grub_term_setcolorstate (term, state);
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}
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/* Turn on/off the cursor. */
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static inline void
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grub_term_setcursor (struct grub_term_output *term, int on)
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{
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if (term->setcursor)
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term->setcursor (term, on);
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}
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static inline void
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grub_term_cls (struct grub_term_output *term)
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{
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if (term->cls)
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(term->cls) (term);
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else
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{
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grub_putcode ('\n', term);
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grub_term_refresh (term);
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}
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}
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#ifdef HAVE_UNIFONT_WIDTHSPEC
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grub_ssize_t
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grub_unicode_estimate_width (const struct grub_unicode_glyph *c);
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#else
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static inline grub_ssize_t
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grub_unicode_estimate_width (const struct grub_unicode_glyph *c __attribute__ ((unused)))
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{
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if (grub_unicode_get_comb_type (c->base))
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return 0;
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return 1;
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}
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#endif
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#define GRUB_TERM_TAB_WIDTH 8
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static inline grub_ssize_t
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grub_term_getcharwidth (struct grub_term_output *term,
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const struct grub_unicode_glyph *c)
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{
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if (c->base == '\t')
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return GRUB_TERM_TAB_WIDTH;
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if (term->getcharwidth)
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return term->getcharwidth (term, c);
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else if (((term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_UTF8_LOGICAL)
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|| ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_UTF8_VISUAL)
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|| ((term->flags & GRUB_TERM_CODE_TYPE_MASK)
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== GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS))
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return grub_unicode_estimate_width (c);
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else
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return 1;
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}
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struct grub_term_autoload
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{
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struct grub_term_autoload *next;
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char *name;
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char *modname;
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};
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extern struct grub_term_autoload *grub_term_input_autoload;
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extern struct grub_term_autoload *grub_term_output_autoload;
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static inline void
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grub_print_spaces (struct grub_term_output *term, int number_spaces)
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{
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while (--number_spaces >= 0)
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grub_putcode (' ', term);
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}
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extern void (*EXPORT_VAR (grub_term_poll_usb)) (int wait_for_completion);
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#define GRUB_TERM_REPEAT_PRE_INTERVAL 400
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#define GRUB_TERM_REPEAT_INTERVAL 50
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#endif /* ! ASM_FILE */
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#endif /* ! GRUB_TERM_HEADER */
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