metaforce/hecl/blender/blendershell.py

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import bpy, sys, os
# Extract pipe file descriptors from arguments
args = sys.argv[sys.argv.index('--')+1:]
readfd = int(args[0])
writefd = int(args[1])
def readpipeline():
retval = bytearray()
while True:
ch = os.read(readfd, 1)
if ch == b'\n' or ch == b'':
return retval
retval += ch
def writepipeline(linebytes):
ch = os.write(writefd, linebytes + b'\n')
def quitblender():
writepipeline(b'QUITTING')
bpy.ops.wm.quit_blender()
# Intro handshake
writepipeline(b'READY')
ackbytes = readpipeline()
if ackbytes != b'ACK':
quitblender()
# Command loop
while True:
cmdline = readpipeline().split(b' ')
if not len(cmdline) or cmdline[0] == b'QUIT':
quitblender()
elif cmdline[0] == b'OPEN':
bpy.ops.wm.open_mainfile(filepath=cmdline[1].encode())
writepipeline(b'SUCCESS')
elif cmdline[0] == b'TYPE':
objname = cmdline[1].encode()