def edit(from_line, bytepos=None):
""" Output program line to console and position cursor. """
if state.basic_state.protected:
console.write(str(from_line)+'\r')
raise error.RunError(error.IFC)
# list line
state.basic_state.bytecode.seek(state.basic_state.line_numbers[from_line]+1)
_, output, textpos = tokenise.detokenise_line(state.basic_state.bytecode, bytepos)
# no newline to avoid scrolling on line 24
console.list_line(str(output), newline=False)
# find row, column position for textpos
newlines, c = 0, 0
pos_row, pos_col = 0, 0
if not output:
return
for i, byte in enumerate(output):
c += 1
if chr(byte) == '\n' or c > state.console_state.screen.mode.width:
newlines += 1
c = 0
if i == textpos:
pos_row, pos_col = newlines, c
if textpos > i:
pos_row, pos_col = newlines, c + 1
if bytepos:
console.set_pos(state.console_state.row-newlines+pos_row, pos_col)
else:
console.set_pos(state.console_state.row-newlines, 1)
def edit(from_line, bytepos=None):
""" Output program line to console and position cursor. """
if state.basic_state.protected:
console.write(str(from_line) + '\r')
raise error.RunError(error.IFC)
# list line
state.basic_state.bytecode.seek(state.basic_state.line_numbers[from_line] +
1)
_, output, textpos = tokenise.detokenise_line(state.basic_state.bytecode,
bytepos)
# no newline to avoid scrolling on line 24
console.list_line(str(output), newline=False)
# find row, column position for textpos
newlines, c = 0, 0
pos_row, pos_col = 0, 0
for i, byte in enumerate(output):
c += 1
if chr(byte) == '\n' or c > state.console_state.screen.mode.width:
newlines += 1
c = 0
if i == textpos:
pos_row, pos_col = newlines, c
if textpos > i:
pos_row, pos_col = newlines, c + 1
if bytepos:
console.set_pos(state.console_state.row - newlines + pos_row, pos_col)
else:
console.set_pos(state.console_state.row - newlines, 1)
def list_lines(dev, from_line, to_line):
""" List line range to console or device. """
if state.basic_state.protected:
# don't list protected files
raise error.RunError(5)
# 65529 is max insertable line number for GW-BASIC 3.23.
# however, 65530-65535 are executed if present in tokenised form.
# in GW-BASIC, 65530 appears in LIST, 65531 and above are hidden
if to_line == None:
to_line = max_list_line
# sort by positions, not line numbers!
listable = sorted([ state.basic_state.line_numbers[num] for num in state.basic_state.line_numbers if num >= from_line and num <= to_line ])
for pos in listable:
state.basic_state.bytecode.seek(pos + 1)
_, line, _ = tokenise.detokenise_line(state.basic_state.bytecode)
if dev == backend.devices['SCRN:']:
console.list_line(str(line))
else:
dev.write_line(str(line))
dev.close()
flow.set_pointer(False)
