int
mcview_get_utf (mcview_t * view, off_t byte_index, int *char_width, gboolean * result)
{
gchar *str = NULL;
int res = -1;
gunichar ch;
gchar *next_ch = NULL;
int width = 0;
*result = TRUE;
switch (view->datasource)
{
case DS_STDIO_PIPE:
case DS_VFS_PIPE:
str = mcview_get_ptr_growing_buffer (view, byte_index);
break;
case DS_FILE:
str = mcview_get_ptr_file (view, byte_index);
break;
case DS_STRING:
str = mcview_get_ptr_string (view, byte_index);
break;
case DS_NONE:
break;
}
if (str == NULL)
{
*result = FALSE;
width = 0;
return 0;
}
res = g_utf8_get_char_validated (str, -1);
if (res < 0)
{
ch = *str;
width = 0;
}
else
{
ch = res;
/* Calculate UTF-8 char width */
next_ch = g_utf8_next_char (str);
if (next_ch)
{
width = next_ch - str;
}
else
{
ch = 0;
width = 0;
}
}
*char_width = width;
return ch;
}
void
mcview_moveto_eol (mcview_t * view)
{
off_t bol;
if (view->hex_mode)
{
off_t filesize;
bol = mcview_offset_rounddown (view->hex_cursor, view->bytes_per_line);
if (mcview_get_byte_indexed (view, bol, view->bytes_per_line - 1, NULL) == TRUE)
{
view->hex_cursor = bol + view->bytes_per_line - 1;
}
else
{
filesize = mcview_get_filesize (view);
view->hex_cursor = mcview_offset_doz (filesize, 1);
}
}
else
{
off_t eol;
bol = mcview_bol (view, view->dpy_start, 0);
eol = mcview_eol (view, view->dpy_start, mcview_get_filesize (view));
if (!view->utf8)
{
if (eol > bol)
view->dpy_text_column = eol - bol;
}
else
{
char *str = NULL;
switch (view->datasource)
{
case DS_STDIO_PIPE:
case DS_VFS_PIPE:
str = mcview_get_ptr_growing_buffer (view, bol);
break;
case DS_FILE:
str = mcview_get_ptr_file (view, bol);
break;
case DS_STRING:
str = mcview_get_ptr_string (view, bol);
break;
case DS_NONE:
break;
}
if (str != NULL && eol > bol)
view->dpy_text_column = g_utf8_strlen (str, eol - bol);
else
view->dpy_text_column = eol - bol;
}
view->dpy_text_column = max (0, view->dpy_text_column - view->data_area.width);
}
mcview_movement_fixups (view, FALSE);
}
gboolean
mcview_get_byte_growing_buffer (WView * view, off_t byte_index, int *retval)
{
char *p;
g_assert (view->growbuf_in_use);
if (retval != NULL)
*retval = -1;
if (byte_index < 0)
return FALSE;
p = mcview_get_ptr_growing_buffer (view, byte_index);
if (p == NULL)
return FALSE;
if (retval != NULL)
*retval = (unsigned char) (*p);
return TRUE;
}
int
mcview_get_utf (mcview_t * view, off_t byte_index, int *char_width, gboolean * result)
{
gchar *str = NULL;
int res = -1;
gunichar ch;
gchar *next_ch = NULL;
gchar utf8buf[UTF8_CHAR_LEN + 1];
*char_width = 0;
*result = FALSE;
switch (view->datasource)
{
case DS_STDIO_PIPE:
case DS_VFS_PIPE:
str = mcview_get_ptr_growing_buffer (view, byte_index);
break;
case DS_FILE:
str = mcview_get_ptr_file (view, byte_index);
break;
case DS_STRING:
str = mcview_get_ptr_string (view, byte_index);
break;
case DS_NONE:
break;
}
if (str == NULL)
return 0;
res = g_utf8_get_char_validated (str, -1);
if (res < 0)
{
/* Retry with explicit bytes to make sure it's not a buffer boundary */
int i;
for (i = 0; i < UTF8_CHAR_LEN; i++)
{
if (mcview_get_byte (view, byte_index + i, &res))
utf8buf[i] = res;
else
{
utf8buf[i] = '\0';
break;
}
}
utf8buf[UTF8_CHAR_LEN] = '\0';
str = utf8buf;
res = g_utf8_get_char_validated (str, -1);
}
if (res < 0)
{
ch = *str;
*char_width = 1;
}
else
{
ch = res;
/* Calculate UTF-8 char width */
next_ch = g_utf8_next_char (str);
if (next_ch)
*char_width = next_ch - str;
else
return 0;
}
*result = TRUE;
return ch;
}