621 lines
16 KiB
C
621 lines
16 KiB
C
/* terminfo.c - simple terminfo module */
|
||
/*
|
||
* GRUB -- GRand Unified Bootloader
|
||
* Copyright (C) 2003,2004,2005,2007 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/>.
|
||
*/
|
||
|
||
/*
|
||
* This file contains various functions dealing with different
|
||
* terminal capabilities. For example, vt52 and vt100.
|
||
*/
|
||
|
||
#include <grub/types.h>
|
||
#include <grub/misc.h>
|
||
#include <grub/mm.h>
|
||
#include <grub/err.h>
|
||
#include <grub/dl.h>
|
||
#include <grub/term.h>
|
||
#include <grub/terminfo.h>
|
||
#include <grub/tparm.h>
|
||
#include <grub/command.h>
|
||
#include <grub/i18n.h>
|
||
#include <grub/time.h>
|
||
|
||
static struct grub_term_output *terminfo_outputs;
|
||
|
||
/* Get current terminfo name. */
|
||
char *
|
||
grub_terminfo_get_current (struct grub_term_output *term)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
return data->name;
|
||
}
|
||
|
||
/* Free *PTR and set *PTR to NULL, to prevent double-free. */
|
||
static void
|
||
grub_terminfo_free (char **ptr)
|
||
{
|
||
grub_free (*ptr);
|
||
*ptr = 0;
|
||
}
|
||
|
||
static void
|
||
grub_terminfo_all_free (struct grub_term_output *term)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
/* Free previously allocated memory. */
|
||
grub_terminfo_free (&data->name);
|
||
grub_terminfo_free (&data->gotoxy);
|
||
grub_terminfo_free (&data->cls);
|
||
grub_terminfo_free (&data->reverse_video_on);
|
||
grub_terminfo_free (&data->reverse_video_off);
|
||
grub_terminfo_free (&data->cursor_on);
|
||
grub_terminfo_free (&data->cursor_off);
|
||
}
|
||
|
||
/* Set current terminfo type. */
|
||
grub_err_t
|
||
grub_terminfo_set_current (struct grub_term_output *term,
|
||
const char *str)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
/* TODO
|
||
* Lookup user specified terminfo type. If found, set term variables
|
||
* as appropriate. Otherwise return an error.
|
||
*
|
||
* How should this be done?
|
||
* a. A static table included in this module.
|
||
* - I do not like this idea.
|
||
* b. A table stored in the configuration directory.
|
||
* - Users must convert their terminfo settings if we have not already.
|
||
* c. Look for terminfo files in the configuration directory.
|
||
* - /usr/share/terminfo is 6.3M on my system.
|
||
* - /usr/share/terminfo is not on most users boot partition.
|
||
* + Copying the terminfo files you want to use to the grub
|
||
* configuration directory is easier then (b).
|
||
* d. Your idea here.
|
||
*/
|
||
|
||
grub_terminfo_all_free (term);
|
||
|
||
if (grub_strcmp ("vt100", str) == 0)
|
||
{
|
||
data->name = grub_strdup ("vt100");
|
||
data->gotoxy = grub_strdup ("\e[%i%p1%d;%p2%dH");
|
||
data->cls = grub_strdup ("\e[H\e[J");
|
||
data->reverse_video_on = grub_strdup ("\e[7m");
|
||
data->reverse_video_off = grub_strdup ("\e[m");
|
||
data->cursor_on = grub_strdup ("\e[?25h");
|
||
data->cursor_off = grub_strdup ("\e[?25l");
|
||
data->setcolor = NULL;
|
||
return grub_errno;
|
||
}
|
||
|
||
if (grub_strcmp ("vt100-color", str) == 0)
|
||
{
|
||
data->name = grub_strdup ("vt100-color");
|
||
data->gotoxy = grub_strdup ("\e[%i%p1%d;%p2%dH");
|
||
data->cls = grub_strdup ("\e[H\e[J");
|
||
data->reverse_video_on = grub_strdup ("\e[7m");
|
||
data->reverse_video_off = grub_strdup ("\e[m");
|
||
data->cursor_on = grub_strdup ("\e[?25h");
|
||
data->cursor_off = grub_strdup ("\e[?25l");
|
||
data->setcolor = grub_strdup ("\e[3%p1%dm\e[4%p2%dm");
|
||
return grub_errno;
|
||
}
|
||
|
||
if (grub_strcmp ("ieee1275", str) == 0)
|
||
{
|
||
data->name = grub_strdup ("ieee1275");
|
||
data->gotoxy = grub_strdup ("\e[%i%p1%d;%p2%dH");
|
||
/* Clear the screen. Using serial console, screen(1) only recognizes the
|
||
* ANSI escape sequence. Using video console, Apple Open Firmware
|
||
* (version 3.1.1) only recognizes the literal ^L. So use both. */
|
||
data->cls = grub_strdup (" \e[2J");
|
||
data->reverse_video_on = grub_strdup ("\e[7m");
|
||
data->reverse_video_off = grub_strdup ("\e[m");
|
||
data->cursor_on = grub_strdup ("\e[?25h");
|
||
data->cursor_off = grub_strdup ("\e[?25l");
|
||
data->setcolor = grub_strdup ("\e[3%p1%dm\e[4%p2%dm");
|
||
return grub_errno;
|
||
}
|
||
|
||
if (grub_strcmp ("dumb", str) == 0)
|
||
{
|
||
data->name = grub_strdup ("dumb");
|
||
data->gotoxy = NULL;
|
||
data->cls = NULL;
|
||
data->reverse_video_on = NULL;
|
||
data->reverse_video_off = NULL;
|
||
data->cursor_on = NULL;
|
||
data->cursor_off = NULL;
|
||
data->setcolor = NULL;
|
||
return grub_errno;
|
||
}
|
||
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "unknown terminfo type");
|
||
}
|
||
|
||
grub_err_t
|
||
grub_terminfo_output_register (struct grub_term_output *term,
|
||
const char *type)
|
||
{
|
||
grub_err_t err;
|
||
struct grub_terminfo_output_state *data;
|
||
|
||
err = grub_terminfo_set_current (term, type);
|
||
|
||
if (err)
|
||
return err;
|
||
|
||
data = (struct grub_terminfo_output_state *) term->data;
|
||
data->next = terminfo_outputs;
|
||
terminfo_outputs = term;
|
||
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
grub_err_t
|
||
grub_terminfo_output_unregister (struct grub_term_output *term)
|
||
{
|
||
struct grub_term_output **ptr;
|
||
|
||
for (ptr = &terminfo_outputs; *ptr;
|
||
ptr = &((struct grub_terminfo_output_state *) (*ptr)->data)->next)
|
||
if (*ptr == term)
|
||
{
|
||
grub_terminfo_all_free (term);
|
||
*ptr = ((struct grub_terminfo_output_state *) (*ptr)->data)->next;
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "terminal not found");
|
||
}
|
||
|
||
/* Wrapper for grub_putchar to write strings. */
|
||
static void
|
||
putstr (struct grub_term_output *term, const char *str)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
while (*str)
|
||
data->put (term, *str++);
|
||
}
|
||
|
||
grub_uint16_t
|
||
grub_terminfo_getxy (struct grub_term_output *term)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
return ((data->xpos << 8) | data->ypos);
|
||
}
|
||
|
||
void
|
||
grub_terminfo_gotoxy (struct grub_term_output *term,
|
||
grub_uint8_t x, grub_uint8_t y)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
if (x > grub_term_width (term) || y > grub_term_height (term))
|
||
{
|
||
grub_error (GRUB_ERR_OUT_OF_RANGE, "invalid point (%u,%u)", x, y);
|
||
return;
|
||
}
|
||
|
||
if (data->gotoxy)
|
||
putstr (term, grub_terminfo_tparm (data->gotoxy, y, x));
|
||
else
|
||
{
|
||
if ((y == data->ypos) && (x == data->xpos - 1))
|
||
data->put (term, '\b');
|
||
}
|
||
|
||
data->xpos = x;
|
||
data->ypos = y;
|
||
}
|
||
|
||
/* Clear the screen. */
|
||
void
|
||
grub_terminfo_cls (struct grub_term_output *term)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
putstr (term, grub_terminfo_tparm (data->cls));
|
||
|
||
data->xpos = data->ypos = 0;
|
||
}
|
||
|
||
void
|
||
grub_terminfo_setcolorstate (struct grub_term_output *term,
|
||
const grub_term_color_state state)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
if (data->setcolor)
|
||
{
|
||
int fg;
|
||
int bg;
|
||
/* Map from VGA to terminal colors. */
|
||
const int colormap[8]
|
||
= { 0, /* Black. */
|
||
4, /* Blue. */
|
||
2, /* Green. */
|
||
6, /* Cyan. */
|
||
1, /* Red. */
|
||
5, /* Magenta. */
|
||
3, /* Yellow. */
|
||
7, /* White. */
|
||
};
|
||
|
||
switch (state)
|
||
{
|
||
case GRUB_TERM_COLOR_STANDARD:
|
||
case GRUB_TERM_COLOR_NORMAL:
|
||
fg = term->normal_color & 0x0f;
|
||
bg = term->normal_color >> 4;
|
||
break;
|
||
case GRUB_TERM_COLOR_HIGHLIGHT:
|
||
fg = term->highlight_color & 0x0f;
|
||
bg = term->highlight_color >> 4;
|
||
break;
|
||
default:
|
||
return;
|
||
}
|
||
|
||
putstr (term, grub_terminfo_tparm (data->setcolor, colormap[fg & 7],
|
||
colormap[bg & 7]));
|
||
return;
|
||
}
|
||
|
||
switch (state)
|
||
{
|
||
case GRUB_TERM_COLOR_STANDARD:
|
||
case GRUB_TERM_COLOR_NORMAL:
|
||
putstr (term, grub_terminfo_tparm (data->reverse_video_off));
|
||
break;
|
||
case GRUB_TERM_COLOR_HIGHLIGHT:
|
||
putstr (term, grub_terminfo_tparm (data->reverse_video_on));
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
void
|
||
grub_terminfo_setcursor (struct grub_term_output *term, const int on)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
if (on)
|
||
putstr (term, grub_terminfo_tparm (data->cursor_on));
|
||
else
|
||
putstr (term, grub_terminfo_tparm (data->cursor_off));
|
||
}
|
||
|
||
/* The terminfo version of putchar. */
|
||
void
|
||
grub_terminfo_putchar (struct grub_term_output *term,
|
||
const struct grub_unicode_glyph *c)
|
||
{
|
||
struct grub_terminfo_output_state *data
|
||
= (struct grub_terminfo_output_state *) term->data;
|
||
|
||
/* Keep track of the cursor. */
|
||
switch (c->base)
|
||
{
|
||
case '\a':
|
||
break;
|
||
|
||
case '\b':
|
||
case 127:
|
||
if (data->xpos > 0)
|
||
data->xpos--;
|
||
break;
|
||
|
||
case '\n':
|
||
if (data->ypos < grub_term_height (term) - 1)
|
||
data->ypos++;
|
||
break;
|
||
|
||
case '\r':
|
||
data->xpos = 0;
|
||
break;
|
||
|
||
default:
|
||
if (data->xpos + c->estimated_width >= grub_term_width (term) + 1)
|
||
{
|
||
data->xpos = 0;
|
||
if (data->ypos < grub_term_height (term) - 1)
|
||
data->ypos++;
|
||
data->put (term, '\r');
|
||
data->put (term, '\n');
|
||
}
|
||
data->xpos += c->estimated_width;
|
||
break;
|
||
}
|
||
|
||
data->put (term, c->base);
|
||
}
|
||
|
||
#define ANSI_C0 0x9b
|
||
|
||
static void
|
||
grub_terminfo_readkey (struct grub_term_input *term, int *keys, int *len,
|
||
int (*readkey) (struct grub_term_input *term))
|
||
{
|
||
int c;
|
||
|
||
#define CONTINUE_READ \
|
||
{ \
|
||
grub_uint64_t start; \
|
||
/* On 9600 we have to wait up to 12 milliseconds. */ \
|
||
start = grub_get_time_ms (); \
|
||
do \
|
||
c = readkey (term); \
|
||
while (c == -1 && grub_get_time_ms () - start < 12); \
|
||
if (c == -1) \
|
||
return; \
|
||
\
|
||
keys[*len] = c; \
|
||
(*len)++; \
|
||
}
|
||
|
||
c = readkey (term);
|
||
if (c < 0)
|
||
{
|
||
*len = 0;
|
||
return;
|
||
}
|
||
*len = 1;
|
||
keys[0] = c;
|
||
if (c != ANSI_C0 && c != '\e')
|
||
{
|
||
/* Backspace: Ctrl-h. */
|
||
if (c == 0x7f)
|
||
c = '\b';
|
||
*len = 1;
|
||
keys[0] = c;
|
||
return;
|
||
}
|
||
|
||
{
|
||
static struct
|
||
{
|
||
char key;
|
||
unsigned ascii;
|
||
}
|
||
three_code_table[] =
|
||
{
|
||
{'4', GRUB_TERM_KEY_DC},
|
||
{'A', GRUB_TERM_KEY_UP},
|
||
{'B', GRUB_TERM_KEY_DOWN},
|
||
{'C', GRUB_TERM_KEY_RIGHT},
|
||
{'D', GRUB_TERM_KEY_LEFT},
|
||
{'F', GRUB_TERM_KEY_END},
|
||
{'H', GRUB_TERM_KEY_HOME},
|
||
{'K', GRUB_TERM_KEY_END},
|
||
{'P', GRUB_TERM_KEY_DC},
|
||
{'?', GRUB_TERM_KEY_PPAGE},
|
||
{'/', GRUB_TERM_KEY_NPAGE}
|
||
};
|
||
|
||
static struct
|
||
{
|
||
char key;
|
||
unsigned ascii;
|
||
}
|
||
four_code_table[] =
|
||
{
|
||
{'1', GRUB_TERM_KEY_HOME},
|
||
{'3', GRUB_TERM_KEY_DC},
|
||
{'5', GRUB_TERM_KEY_PPAGE},
|
||
{'6', GRUB_TERM_KEY_NPAGE}
|
||
};
|
||
unsigned i;
|
||
|
||
if (c == '\e')
|
||
{
|
||
CONTINUE_READ;
|
||
|
||
if (c != '[')
|
||
return;
|
||
}
|
||
|
||
CONTINUE_READ;
|
||
|
||
for (i = 0; i < ARRAY_SIZE (three_code_table); i++)
|
||
if (three_code_table[i].key == c)
|
||
{
|
||
keys[0] = three_code_table[i].ascii;
|
||
*len = 1;
|
||
return;
|
||
}
|
||
|
||
for (i = 0; i < ARRAY_SIZE (four_code_table); i++)
|
||
if (four_code_table[i].key == c)
|
||
{
|
||
CONTINUE_READ;
|
||
if (c != '~')
|
||
return;
|
||
keys[0] = three_code_table[i].ascii;
|
||
*len = 1;
|
||
return;
|
||
}
|
||
return;
|
||
}
|
||
#undef CONTINUE_READ
|
||
}
|
||
|
||
/* The terminfo version of getkey. */
|
||
int
|
||
grub_terminfo_getkey (struct grub_term_input *termi)
|
||
{
|
||
struct grub_terminfo_input_state *data
|
||
= (struct grub_terminfo_input_state *) (termi->data);
|
||
if (data->npending)
|
||
{
|
||
data->npending--;
|
||
grub_memmove (data->input_buf, data->input_buf + 1, data->npending);
|
||
return data->input_buf[0];
|
||
}
|
||
|
||
grub_terminfo_readkey (termi, data->input_buf,
|
||
&data->npending, data->readkey);
|
||
|
||
if (data->npending)
|
||
{
|
||
data->npending--;
|
||
grub_memmove (data->input_buf, data->input_buf + 1, data->npending);
|
||
return data->input_buf[0];
|
||
}
|
||
|
||
return GRUB_TERM_NO_KEY;
|
||
}
|
||
|
||
grub_err_t
|
||
grub_terminfo_input_init (struct grub_term_input *termi)
|
||
{
|
||
struct grub_terminfo_input_state *data
|
||
= (struct grub_terminfo_input_state *) (termi->data);
|
||
data->npending = 0;
|
||
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
/* GRUB Command. */
|
||
|
||
static grub_err_t
|
||
print_terminfo (void)
|
||
{
|
||
const char *encoding_names[(GRUB_TERM_CODE_TYPE_MASK
|
||
>> GRUB_TERM_CODE_TYPE_SHIFT) + 1]
|
||
= {
|
||
/* VGA and glyph descriptor types are just for completeness,
|
||
they are not used on terminfo terminals.
|
||
*/
|
||
[GRUB_TERM_CODE_TYPE_ASCII >> GRUB_TERM_CODE_TYPE_SHIFT] = _("ASCII"),
|
||
[GRUB_TERM_CODE_TYPE_CP437 >> GRUB_TERM_CODE_TYPE_SHIFT] = "CP-437",
|
||
[GRUB_TERM_CODE_TYPE_UTF8_LOGICAL >> GRUB_TERM_CODE_TYPE_SHIFT]
|
||
= _("UTF-8"),
|
||
[GRUB_TERM_CODE_TYPE_UTF8_VISUAL >> GRUB_TERM_CODE_TYPE_SHIFT]
|
||
= _("UTF-8 visual"),
|
||
[GRUB_TERM_CODE_TYPE_VISUAL_GLYPHS >> GRUB_TERM_CODE_TYPE_SHIFT]
|
||
= "Glyph descriptors",
|
||
_("Unknown"), _("Unknown"), _("Unknown")
|
||
};
|
||
struct grub_term_output *cur;
|
||
|
||
grub_printf ("Current terminfo types: \n");
|
||
for (cur = terminfo_outputs; cur;
|
||
cur = ((struct grub_terminfo_output_state *) cur->data)->next)
|
||
grub_printf ("%s: %s\t%s\n", cur->name,
|
||
grub_terminfo_get_current(cur),
|
||
encoding_names[(cur->flags & GRUB_TERM_CODE_TYPE_MASK)
|
||
>> GRUB_TERM_CODE_TYPE_SHIFT]);
|
||
|
||
return GRUB_ERR_NONE;
|
||
}
|
||
|
||
static grub_err_t
|
||
grub_cmd_terminfo (grub_command_t cmd __attribute__ ((unused)),
|
||
int argc, char **args)
|
||
{
|
||
struct grub_term_output *cur;
|
||
int encoding = GRUB_TERM_CODE_TYPE_ASCII;
|
||
int i;
|
||
char *name = NULL, *type = NULL;
|
||
|
||
if (argc == 0)
|
||
return print_terminfo ();
|
||
|
||
for (i = 0; i < argc; i++)
|
||
{
|
||
if (grub_strcmp (args[i], "-a") == 0
|
||
|| grub_strcmp (args[i], "--ascii") == 0)
|
||
{
|
||
encoding = GRUB_TERM_CODE_TYPE_ASCII;
|
||
continue;
|
||
}
|
||
if (grub_strcmp (args[i], "-u") == 0
|
||
|| grub_strcmp (args[i], "--utf8") == 0)
|
||
{
|
||
encoding = GRUB_TERM_CODE_TYPE_UTF8_LOGICAL;
|
||
continue;
|
||
}
|
||
if (grub_strcmp (args[i], "-v") == 0
|
||
|| grub_strcmp (args[i], "--visual-utf8") == 0)
|
||
{
|
||
encoding = GRUB_TERM_CODE_TYPE_UTF8_VISUAL;
|
||
continue;
|
||
}
|
||
if (!name)
|
||
{
|
||
name = args[i];
|
||
continue;
|
||
}
|
||
if (!type)
|
||
{
|
||
type = args[i];
|
||
continue;
|
||
}
|
||
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "too many parameters");
|
||
}
|
||
|
||
if (name == NULL)
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT, "too few parameters");
|
||
|
||
for (cur = terminfo_outputs; cur;
|
||
cur = ((struct grub_terminfo_output_state *) cur->data)->next)
|
||
if (grub_strcmp (name, cur->name) == 0)
|
||
{
|
||
cur->flags = (cur->flags & ~GRUB_TERM_CODE_TYPE_MASK) | encoding;
|
||
if (!type)
|
||
return GRUB_ERR_NONE;
|
||
|
||
return grub_terminfo_set_current (cur, type);
|
||
}
|
||
return grub_error (GRUB_ERR_BAD_ARGUMENT,
|
||
"no terminal %s found or it's not handled by terminfo",
|
||
name);
|
||
}
|
||
|
||
static grub_command_t cmd;
|
||
|
||
GRUB_MOD_INIT(terminfo)
|
||
{
|
||
cmd = grub_register_command ("terminfo", grub_cmd_terminfo,
|
||
N_("[[-a|-u|-v] TERM [TYPE]]"),
|
||
N_("Set terminfo type of TERM to TYPE.\n"
|
||
"-a, --ascii Terminal is ASCII-only [default].\n"
|
||
"-u, --utf8 Terminal is logical-ordered UTF-8.\n"
|
||
"-v, --visual-utf8 Terminal is visually-ordered UTF-8.")
|
||
|
||
);
|
||
}
|
||
|
||
GRUB_MOD_FINI(terminfo)
|
||
{
|
||
grub_unregister_command (cmd);
|
||
}
|