def get_console(console_id):
"""
helper function for console operators
currently each text data block gets its own
console - code.InteractiveConsole()
...which is stored in this function.
console_id can be any hashable type
"""
from code import InteractiveConsole
consoles = getattr(get_console, "consoles", None)
hash_next = hash(bpy.context.window_manager)
if consoles is None:
consoles = get_console.consoles = {}
get_console.consoles_namespace_hash = hash_next
else:
# check if clearing the namespace is needed to avoid a memory leak.
# the window manager is normally loaded with new blend files
# so this is a reasonable way to deal with namespace clearing.
# bpy.data hashing is reset by undo so cant be used.
hash_prev = getattr(get_console, "consoles_namespace_hash", 0)
if hash_prev != hash_next:
get_console.consoles_namespace_hash = hash_next
consoles.clear()
console_data = consoles.get(console_id)
if console_data:
console, stdout, stderr = console_data
# XXX, bug in python 3.1.2, 3.2 ? (worked in 3.1.1)
# seems there is no way to clear StringIO objects for writing, have to
# make new ones each time.
import io
stdout = io.StringIO()
stderr = io.StringIO()
else:
if _BPY_MAIN_OWN:
import types
bpy_main_mod = types.ModuleType("__main__")
namespace = bpy_main_mod.__dict__
else:
namespace = {}
namespace["__builtins__"] = sys.modules["builtins"]
namespace["bpy"] = bpy
# weak! - but highly convenient
namespace["C"] = bpy.context
namespace["D"] = bpy.data
replace_help(namespace)
console = InteractiveConsole(locals=namespace,
filename="<blender_console>")
console.push("from mathutils import *")
console.push("from math import *")
if _BPY_MAIN_OWN:
console._bpy_main_mod = bpy_main_mod
import io
stdout = io.StringIO()
stderr = io.StringIO()
consoles[console_id] = console, stdout, stderr
return console, stdout, stderr
