def spawn_shell(command):
""" Run a SHELL subprocess. """
cmd = shell_command
if command:
cmd += ' -c "' + command + '"'
p = pexpect.spawn(str(cmd))
while True:
try:
c = state.console_state.keyb.get_char()
except error.Break:
# ignore ctrl+break in SHELL
pass
if c == '\b': # BACKSPACE
p.send('\x7f')
elif c != '':
p.send(c)
while True:
try:
c = p.read_nonblocking(1, timeout=0)
except:
c = ''
if c == '' or c == '\n':
break
elif c == '\r':
console.write_line()
elif c == '\b':
if state.console_state.col != 1:
console.set_pos(state.console_state.row,
state.console_state.col-1)
else:
console.write(c)
if c == '' and not p.isalive():
return
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 spawn_shell(command):
""" Run a SHELL subprocess. """
cmd = shell_command
if command:
cmd += ' -c "' + command + '"'
p = pexpect.spawn(str(cmd))
while True:
try:
c = state.console_state.keyb.get_char()
except error.Break:
# ignore ctrl+break in SHELL
pass
if c == '\b': # BACKSPACE
p.send('\x7f')
elif c != '':
p.send(c)
while True:
try:
c = p.read_nonblocking(1, timeout=0)
except:
c = ''
if c == '' or c == '\n':
break
elif c == '\r':
console.write_line()
elif c == '\b':
if state.console_state.col != 1:
console.set_pos(state.console_state.row,
state.console_state.col - 1)
else:
console.write(c)
if c == '' and not p.isalive():
return