int
grub_is_valid_utf8 (const grub_uint8_t *src, grub_size_t srcsize)
{
int count = 0;
grub_uint32_t code = 0;
while (srcsize)
{
if (srcsize != (grub_size_t)-1)
srcsize--;
if (!grub_utf8_process (*src++, &code, &count))
return 0;
if (count != 0)
continue;
if (code == 0)
return 1;
if (code > GRUB_UNICODE_LAST_VALID)
return 0;
}
return 1;
}
/* Convert a (possibly null-terminated) UTF-8 string of at most SRCSIZE
bytes (if SRCSIZE is -1, it is ignored) in length to a UCS-4 string.
Return the number of characters converted. DEST must be able to hold
at least DESTSIZE characters.
If SRCEND is not NULL, then *SRCEND is set to the next byte after the
last byte used in SRC. */
grub_size_t
grub_utf8_to_ucs4 (grub_uint32_t *dest, grub_size_t destsize,
const grub_uint8_t *src, grub_size_t srcsize,
const grub_uint8_t **srcend)
{
grub_uint32_t *p = dest;
int count = 0;
grub_uint32_t code = 0;
if (srcend)
*srcend = src;
while (srcsize && destsize)
{
int was_count = count;
if (srcsize != (grub_size_t)-1)
srcsize--;
if (!grub_utf8_process (*src++, &code, &count))
{
code = '?';
count = 0;
/* Character c may be valid, don't eat it. */
if (was_count)
src--;
}
if (count != 0)
continue;
if (code == 0)
break;
*p++ = code;
destsize--;
}
if (srcend)
*srcend = src;
return p - dest;
}
static grub_err_t
grub_cmd_cat (grub_extcmd_context_t ctxt, int argc, char **args)
{
struct grub_arg_list *state = ctxt->state;
int dos = 0;
grub_file_t file;
unsigned char buf[GRUB_DISK_SECTOR_SIZE];
grub_ssize_t size;
int key = GRUB_TERM_NO_KEY;
grub_uint32_t code = 0;
int count = 0;
unsigned char utbuf[GRUB_MAX_UTF8_PER_CODEPOINT + 1];
int utcount = 0;
int is_0d = 0;
int j;
if (state[0].set)
dos = 1;
if (argc != 1)
return grub_error (GRUB_ERR_BAD_ARGUMENT, N_("filename expected"));
file = grub_file_open (args[0], GRUB_FILE_TYPE_CAT);
if (! file)
return grub_errno;
while ((size = grub_file_read (file, buf, sizeof (buf))) > 0
&& key != GRUB_TERM_ESC)
{
int i;
for (i = 0; i < size; i++)
{
utbuf[utcount++] = buf[i];
if (is_0d && buf[i] != '\n')
{
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
grub_printf ("<%x>", (int) '\r');
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
}
is_0d = 0;
if (!grub_utf8_process (buf[i], &code, &count))
{
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
for (j = 0; j < utcount - 1; j++)
grub_printf ("<%x>", (unsigned int) utbuf[j]);
code = 0;
count = 0;
if (utcount == 1 || !grub_utf8_process (buf[i], &code, &count))
{
grub_printf ("<%x>", (unsigned int) buf[i]);
code = 0;
count = 0;
utcount = 0;
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
continue;
}
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
utcount = 1;
}
if (count)
continue;
if ((code >= 0xa1 || grub_isprint (code)
|| grub_isspace (code)) && code != '\r')
{
grub_printf ("%C", code);
count = 0;
code = 0;
utcount = 0;
continue;
}
if (dos && code == '\r')
{
is_0d = 1;
count = 0;
code = 0;
utcount = 0;
continue;
}
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
for (j = 0; j < utcount; j++)
grub_printf ("<%x>", (unsigned int) utbuf[j]);
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
count = 0;
code = 0;
utcount = 0;
}
do
key = grub_getkey_noblock ();
while (key != GRUB_TERM_ESC && key != GRUB_TERM_NO_KEY);
}
if (is_0d)
{
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
grub_printf ("<%x>", (unsigned int) '\r');
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
}
if (utcount)
{
grub_setcolorstate (GRUB_TERM_COLOR_HIGHLIGHT);
for (j = 0; j < utcount; j++)
grub_printf ("<%x>", (unsigned int) utbuf[j]);
grub_setcolorstate (GRUB_TERM_COLOR_STANDARD);
}
grub_xputs ("\n");
grub_refresh ();
grub_file_close (file);
return 0;
}
