void
mcview_moveto_eol (WView * view)
{
off_t bol;
if (view->mode_flags.hex)
{
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
{
mcview_ascii_moveto_eol (view);
}
mcview_movement_fixups (view, FALSE);
}
void
mcview_move_right (WView * view, off_t columns)
{
if (view->mode_flags.hex)
{
off_t last_byte;
off_t old_cursor = view->hex_cursor;
last_byte = mcview_offset_doz (mcview_get_filesize (view), 1);
g_assert (columns == 1);
if (view->hexview_in_text || view->hexedit_lownibble)
{
if (view->hex_cursor < last_byte)
view->hex_cursor++;
}
if (!view->hexview_in_text)
if (old_cursor < last_byte || !view->hexedit_lownibble)
view->hexedit_lownibble = !view->hexedit_lownibble;
}
else if (!view->mode_flags.wrap)
{
view->dpy_text_column += columns;
}
mcview_movement_fixups (view, FALSE);
}
void
mcview_moveto_bottom (WView * view)
{
off_t filesize;
mcview_update_filesize (view);
if (view->growbuf_in_use)
mcview_growbuf_read_all_data (view);
filesize = mcview_get_filesize (view);
if (view->mode_flags.hex)
{
view->hex_cursor = mcview_offset_doz (filesize, 1);
mcview_movement_fixups (view, TRUE);
}
else
{
const off_t datalines = view->data_area.height;
view->dpy_start = filesize;
view->dpy_paragraph_skip_lines = 0;
view->dpy_wrap_dirty = TRUE;
mcview_move_up (view, datalines);
}
}
void
mcview_move_down (WView * view, off_t lines)
{
off_t last_byte;
last_byte = mcview_get_filesize (view);
if (view->mode_flags.hex)
{
off_t i, limit;
limit = mcview_offset_doz (last_byte, (off_t) view->bytes_per_line);
for (i = 0; i < lines && view->hex_cursor < limit; i++)
{
view->hex_cursor += view->bytes_per_line;
if (lines != 1)
{
view->dpy_start += view->bytes_per_line;
view->dpy_paragraph_skip_lines = 0;
view->dpy_wrap_dirty = TRUE;
}
}
}
else
{
mcview_ascii_move_down (view, lines);
}
mcview_movement_fixups (view, TRUE);
}
void
mcview_moveto_bottom (mcview_t * view)
{
off_t filesize;
mcview_update_filesize (view);
if (view->growbuf_in_use)
mcview_growbuf_read_until (view, OFFSETTYPE_MAX);
filesize = mcview_get_filesize (view);
if (view->hex_mode)
{
view->hex_cursor = mcview_offset_doz (filesize, 1);
mcview_movement_fixups (view, TRUE);
}
else
{
const off_t datalines = view->data_area.height;
view->dpy_start = filesize;
mcview_move_up (view, datalines);
}
}
void
mcview_move_up (WView * view, off_t lines)
{
if (view->mode_flags.hex)
{
off_t bytes = lines * view->bytes_per_line;
if (view->hex_cursor >= bytes)
{
view->hex_cursor -= bytes;
if (view->hex_cursor < view->dpy_start)
{
view->dpy_start = mcview_offset_doz (view->dpy_start, bytes);
view->dpy_paragraph_skip_lines = 0;
view->dpy_wrap_dirty = TRUE;
}
}
else
{
view->hex_cursor %= view->bytes_per_line;
}
}
else
{
mcview_ascii_move_up (view, lines);
}
mcview_movement_fixups (view, TRUE);
}
void
mcview_move_right (mcview_t * view, off_t columns)
{
if (view->hex_mode)
{
off_t last_byte;
off_t old_cursor = view->hex_cursor;
last_byte = mcview_offset_doz (mcview_get_filesize (view), 1);
#ifdef HAVE_ASSERT_H
assert (columns == 1);
#endif
if (view->hexview_in_text || view->hexedit_lownibble)
{
if (view->hex_cursor < last_byte)
view->hex_cursor++;
}
if (!view->hexview_in_text)
if (old_cursor < last_byte || !view->hexedit_lownibble)
view->hexedit_lownibble = !view->hexedit_lownibble;
}
else
{
view->dpy_text_column += columns;
}
mcview_movement_fixups (view, FALSE);
}
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);
}
void
mcview_ascii_moveto_eol (WView * view)
{
if (!view->text_wrap_mode)
{
mcview_state_machine_t state;
off_t linewidth;
/* Get the width of the topmost paragraph. */
mcview_state_machine_init (&state, view->dpy_start);
mcview_display_line (view, &state, -1, NULL, &linewidth);
view->dpy_text_column = mcview_offset_doz (linewidth, (off_t) view->data_area.width);
}
}
void
mcview_move_left (WView * view, off_t columns)
{
if (view->mode_flags.hex)
{
off_t old_cursor = view->hex_cursor;
g_assert (columns == 1);
if (view->hexview_in_text || !view->hexedit_lownibble)
{
if (view->hex_cursor > 0)
view->hex_cursor--;
}
if (!view->hexview_in_text)
if (old_cursor > 0 || view->hexedit_lownibble)
view->hexedit_lownibble = !view->hexedit_lownibble;
}
else if (!view->mode_flags.wrap)
view->dpy_text_column = mcview_offset_doz (view->dpy_text_column, columns);
mcview_movement_fixups (view, FALSE);
}
void
mcview_move_left (mcview_t * view, off_t columns)
{
if (view->hex_mode)
{
off_t old_cursor = view->hex_cursor;
#ifdef HAVE_ASSERT_H
assert (columns == 1);
#endif
if (view->hexview_in_text || !view->hexedit_lownibble)
{
if (view->hex_cursor > 0)
view->hex_cursor--;
}
if (!view->hexview_in_text)
if (old_cursor > 0 || view->hexedit_lownibble)
view->hexedit_lownibble = !view->hexedit_lownibble;
}
else if (!view->text_wrap_mode)
view->dpy_text_column = mcview_offset_doz (view->dpy_text_column, columns);
mcview_movement_fixups (view, FALSE);
}
void
mcview_move_up (mcview_t * view, off_t lines)
{
off_t new_offset;
if (view->hex_mode)
{
off_t bytes = lines * view->bytes_per_line;
if (view->hex_cursor >= bytes)
{
view->hex_cursor -= bytes;
if (view->hex_cursor < view->dpy_start)
view->dpy_start = mcview_offset_doz (view->dpy_start, bytes);
}
else
{
view->hex_cursor %= view->bytes_per_line;
}
}
else
{
off_t i;
for (i = 0; i < lines; i++)
{
if (view->dpy_start == 0)
break;
if (view->text_wrap_mode)
{
new_offset = mcview_bol (view, view->dpy_start, view->dpy_start - (off_t) 1);
/* check if dpy_start == BOL or not (then new_offset = dpy_start - 1,
* no need to check more) */
if (new_offset == view->dpy_start)
{
size_t last_row_length;
new_offset = mcview_bol (view, new_offset - 1, 0);
last_row_length = (view->dpy_start - new_offset) % view->data_area.width;
if (last_row_length != 0)
{
/* if dpy_start == BOL in wrapped mode, find BOL of previous line
* and move down all but the last rows */
new_offset = view->dpy_start - (off_t) last_row_length;
}
}
else
{
/* if dpy_start != BOL in wrapped mode, just move one row up;
* no need to check if > 0 as there is at least exactly one wrap
* between dpy_start and BOL */
new_offset = view->dpy_start - (off_t) view->data_area.width;
}
view->dpy_start = new_offset;
}
else
{
/* if unwrapped -> current BOL equals dpy_start, just find BOL of previous line */
new_offset = view->dpy_start - 1;
view->dpy_start = mcview_bol (view, new_offset, 0);
}
}
}
mcview_movement_fixups (view, TRUE);
}
