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blender-asset-manager/packer/packer.py

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Python
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#!/usr/bin/env python3
# ***** BEGIN GPL LICENSE BLOCK *****
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ***** END GPL LICENCE BLOCK *****
import blendfile_path_walker
TIMEIT = True
def pack(blendfile_src, blendfile_dst, mode='FILE',
deps_remap=None, paths_remap=None):
"""
:param deps_remap: Store path deps_remap info as follows.
{"file.blend": {"path_new": "path_old", ...}, ...}
:type deps_remap: dict or None
"""
# Internal details:
# - we copy to a temp path before operating on the blend file
# so we can modify in-place.
# - temp files are only created once, (if we never touched them before),
# this way, for linked libraries - a single blend file may be used
# multiple times, each access will apply new edits ontop of the old ones.
# - we track which libs we have touched (using 'lib_visit' arg),
# this means that the same libs wont be touched many times to modify the same data
# also prevents cyclic loops from crashing.
import os
import shutil
path_temp_files = set()
path_copy_files = set()
SUBDIR = b'data'
TEMP_SUFFIX = b'@'
# TODO, make configurable
WRITE_JSON_REMAP = True
if TIMEIT:
import time
t = time.time()
def temp_remap_cb(filepath, level):
"""
Create temp files in the destination path.
"""
filepath = blendfile_path_walker.utils.compatpath(filepath)
if level == 0:
filepath_tmp = os.path.join(base_dir_dst, os.path.basename(filepath)) + TEMP_SUFFIX
else:
filepath_tmp = os.path.join(base_dir_dst, SUBDIR, os.path.basename(filepath)) + TEMP_SUFFIX
filepath_tmp = os.path.normpath(filepath_tmp)
# only overwrite once (so we can write into a path already containing files)
if filepath_tmp not in path_temp_files:
shutil.copy(filepath, filepath_tmp)
path_temp_files.add(filepath_tmp)
return filepath_tmp
# base_dir_src = os.path.dirname(blendfile_src)
base_dir_dst = os.path.dirname(blendfile_dst)
base_dir_dst_subdir = os.path.join(base_dir_dst, SUBDIR)
if not os.path.exists(base_dir_dst_subdir):
os.makedirs(base_dir_dst_subdir)
lib_visit = {}
for fp, (rootdir, fp_blend_basename) in blendfile_path_walker.FilePath.visit_from_blend(
blendfile_src,
readonly=False,
temp_remap_cb=temp_remap_cb,
recursive=True,
lib_visit=lib_visit,
):
# assume the path might be relative
path_src_orig = fp.filepath
path_rel = blendfile_path_walker.utils.compatpath(path_src_orig)
path_base = path_rel.split(os.sep.encode('ascii'))[-1]
path_src = blendfile_path_walker.utils.abspath(path_rel, fp.basedir)
# rename in the blend
path_dst = os.path.join(base_dir_dst_subdir, path_base)
if fp.level == 0:
path_dst_final = b"//" + os.path.join(SUBDIR, path_base)
else:
path_dst_final = b'//' + path_base
fp.filepath = path_dst_final
# add to copy-list
# never copy libs (handled separately)
if not isinstance(fp, blendfile_path_walker.FPElem_block_path) or fp.userdata[0].code != b'LI':
path_copy_files.add((path_src, path_dst))
if deps_remap is not None:
# this needs to become JSON later... ugh, need to use strings
deps_remap.setdefault(
fp_blend_basename.decode('utf-8'),
{})[path_dst_final.decode('utf-8')] = path_src_orig.decode('utf-8')
del lib_visit
if TIMEIT:
print(" Time: %.4f\n" % (time.time() - t))
# handle deps_remap and file renaming
if deps_remap is not None:
blendfile_src_basename = os.path.basename(blendfile_src).decode('utf-8')
blendfile_dst_basename = os.path.basename(blendfile_dst).decode('utf-8')
if blendfile_src_basename != blendfile_dst_basename:
deps_remap[blendfile_dst_basename] = deps_remap[blendfile_src_basename]
del deps_remap[blendfile_src_basename]
del blendfile_src_basename, blendfile_dst_basename
# store path mapping {dst: src}
if paths_remap is not None:
for src, dst in path_copy_files:
# TODO. relative to project-basepath
paths_remap[os.path.relpath(dst, base_dir_dst).decode('utf-8')] = src.decode('utf-8')
# paths_remap[os.path.relpath(dst, base_dir_dst)] = blendfile_src
# --------------------
# Handle File Copy/Zip
if mode == 'FILE':
blendfile_dst_tmp = temp_remap_cb(blendfile_src, 0)
shutil.move(blendfile_dst_tmp, blendfile_dst)
path_temp_files.remove(blendfile_dst_tmp)
# strip TEMP_SUFFIX
for fn in path_temp_files:
shutil.copyfile(fn, fn[:-1])
for src, dst in path_copy_files:
assert(b'.blend' not in dst)
if not os.path.exists(src):
print(" Source missing! %r" % src)
else:
print(" Copying %r -> %r" % (src, dst))
shutil.copy(src, dst)
print(" Written:", blendfile_dst)
elif mode == 'ZIP':
import zipfile
with zipfile.ZipFile(blendfile_dst.decode('utf-8'), 'w', zipfile.ZIP_DEFLATED) as zip:
for fn in path_temp_files:
print(" Copying %r -> <zip>" % fn)
zip.write(fn.decode('utf-8'),
arcname=os.path.relpath(fn[:-1], base_dir_dst).decode('utf-8'))
os.remove(fn)
shutil.rmtree(base_dir_dst_subdir)
for src, dst in path_copy_files:
assert(b'.blend' not in dst)
if not os.path.exists(src):
print(" Source missing! %r" % src)
else:
print(" Copying %r -> <zip>" % src)
zip.write(src.decode('utf-8'),
arcname=os.path.relpath(dst, base_dir_dst).decode('utf-8'))
if WRITE_JSON_REMAP:
import json
if deps_remap is not None:
zip.writestr(
".bam_deps_remap.json",
json.dumps(deps_remap,
check_circular=False,
# optional (pretty)
sort_keys=True, indent=4, separators=(',', ': '),
).encode('utf-8'))
if paths_remap is not None:
zip.writestr(
".bam_paths_remap.json",
json.dumps(paths_remap,
check_circular=False,
# optional (pretty)
sort_keys=True, indent=4, separators=(',', ': '),
).encode('utf-8'))
print(" Written:", blendfile_dst)
else:
raise Exception("%s not a known mode" % mode)
def create_argparse():
import os
import argparse
usage_text = (
"Run this script to extract blend-files(s) to a destination path:" +
os.path.basename(__file__) +
"--input=FILE --output=FILE [options]")
parser = argparse.ArgumentParser(description=usage_text)
# for main_render() only, but validate args.
parser.add_argument(
"-i", "--input", dest="path_src", metavar='FILE', required=True,
help="Input path(s) or a wildcard to glob many files")
parser.add_argument(
"-o", "--output", dest="path_dst", metavar='DIR', required=True,
help="Output file or a directory when multiple inputs are passed")
parser.add_argument(
"-m", "--mode", dest="mode", metavar='MODE', required=False,
choices=('FILE', 'ZIP'), default='FILE',
help="Output file or a directory when multiple inputs are passed")
parser.add_argument(
"-r", "--deps_remap", dest="deps_remap", metavar='FILE',
help="Write out the path mapping to a JSON file")
parser.add_argument(
"-s", "--paths_remap", dest="paths_remap", metavar='FILE',
help="Write out the original paths to a JSON file")
return parser
def main():
import sys
parser = create_argparse()
args = parser.parse_args(sys.argv[1:])
encoding = sys.getfilesystemencoding()
deps_remap = {} if args.deps_remap else None
paths_remap = {} if args.paths_remap else None
pack(args.path_src.encode(encoding),
args.path_dst.encode(encoding),
args.mode,
deps_remap,
paths_remap,
)
if deps_remap is not None:
import json
with open(args.deps_remap, 'w', encoding='utf-8') as f:
json.dump(
deps_remap, f, ensure_ascii=False,
check_circular=False,
# optional (pretty)
sort_keys=True, indent=4, separators=(',', ': '),
)
if paths_remap is not None:
import json
with open(args.paths_remap, 'w', encoding='utf-8') as f:
json.dump(
paths_remap, f, ensure_ascii=False,
check_circular=False,
# optional (pretty)
sort_keys=True, indent=4, separators=(',', ': '),
)
if __name__ == "__main__":
main()