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 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 list_lines(from_line, to_line):
""" List line range. """
if state.basic_state.protected:
# don't list protected files
raise error.RunError(error.IFC)
# 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 is 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 ])
lines = []
for pos in listable:
state.basic_state.bytecode.seek(pos + 1)
_, line, _ = tokenise.detokenise_line(state.basic_state.bytecode)
lines.append(str(line))
flow.set_pointer(False)
return lines
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)
def save(g, mode='B'):
""" Save the program to stream g in (A)scii, (B)ytecode or (P)rotected mode. """
if state.basic_state.protected and mode != 'P':
raise error.RunError(5)
current = state.basic_state.bytecode.tell()
# skip first \x00 in bytecode, replace with appropriate magic number
state.basic_state.bytecode.seek(1)
if mode == 'B':
# binary bytecode mode
g.write('\xff')
last = ''
while True:
nxt = state.basic_state.bytecode.read(1)
if not nxt:
break
g.write(nxt)
last = nxt
if last != '\x1a':
g.write('\x1a')
elif mode == 'P':
# protected mode
g.write('\xfe')
protect.protect(state.basic_state.bytecode, g)
g.write('\x1a')
else:
# ascii mode
while True:
current_line, output, _ = tokenise.detokenise_line(state.basic_state.bytecode)
if current_line == -1 or (current_line > max_list_line):
break
output = str(output)
if utf8_files:
output = unicodepage.UTF8Converter().to_utf8(output)
g.write(output + '\r\n')
# close with ^Z if we're in GW-BASIC text file mode to match GW-BASIC files exactly
# don't do this in UTF8-mode as it's a bit odd to have a legacy end-of-file marker in a UTF8 text.
if not utf8_files:
g.write('\x1a')
state.basic_state.bytecode.seek(current)
g.close()
def save(g):
""" Save the program to stream g in (A)scii, (B)ytecode or (P)rotected mode. """
mode = g.filetype
if state.basic_state.protected and mode != 'P':
raise error.RunError(error.IFC)
current = state.basic_state.bytecode.tell()
# skip first \x00 in bytecode
state.basic_state.bytecode.seek(1)
if mode == 'B':
# binary bytecode mode
g.write(state.basic_state.bytecode.read())
elif mode == 'P':
# protected mode
protect.protect(state.basic_state.bytecode, g)
else:
# ascii mode
while True:
current_line, output, _ = tokenise.detokenise_line(state.basic_state.bytecode)
if current_line == -1 or (current_line > max_list_line):
break
g.write_line(str(output))
state.basic_state.bytecode.seek(current)
def list_lines(from_line, to_line):
""" List line range. """
if state.basic_state.protected:
# don't list protected files
raise error.RunError(error.IFC)
# 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 is 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
])
lines = []
for pos in listable:
state.basic_state.bytecode.seek(pos + 1)
_, line, _ = tokenise.detokenise_line(state.basic_state.bytecode)
lines.append(str(line))
flow.set_pointer(False)
return lines
def save(g):
""" Save the program to stream g in (A)scii, (B)ytecode or (P)rotected mode. """
mode = g.filetype
if state.basic_state.protected and mode != 'P':
raise error.RunError(error.IFC)
current = state.basic_state.bytecode.tell()
# skip first \x00 in bytecode
state.basic_state.bytecode.seek(1)
if mode == 'B':
# binary bytecode mode
g.write(state.basic_state.bytecode.read())
elif mode == 'P':
# protected mode
protect.protect(state.basic_state.bytecode, g)
else:
# ascii mode
while True:
current_line, output, _ = tokenise.detokenise_line(
state.basic_state.bytecode)
if current_line == -1 or (current_line > max_list_line):
break
g.write_line(str(output))
state.basic_state.bytecode.seek(current)
