149 lines
4.6 KiB
Python
Executable File
149 lines
4.6 KiB
Python
Executable File
# ***** 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 *****
|
|
#
|
|
# (c) 2018, Blender Foundation - Sybren A. Stüvel
|
|
"""List count and total size of datablocks in a blend file."""
|
|
import collections
|
|
import logging
|
|
import pathlib
|
|
|
|
from blender_asset_tracer import blendfile
|
|
from . import common
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class BlockTypeInfo:
|
|
def __init__(self):
|
|
self.total_bytes = 0
|
|
self.num_blocks = 0
|
|
self.sizes = []
|
|
self.blocks = []
|
|
self.name = "unset"
|
|
|
|
|
|
def add_parser(subparsers):
|
|
"""Add argparser for this subcommand."""
|
|
|
|
parser = subparsers.add_parser("blocks", help=__doc__)
|
|
parser.set_defaults(func=cli_blocks)
|
|
parser.add_argument("blendfile", type=pathlib.Path)
|
|
parser.add_argument(
|
|
"-d",
|
|
"--dump",
|
|
default=False,
|
|
action="store_true",
|
|
help="Hex-dump the biggest block",
|
|
)
|
|
parser.add_argument(
|
|
"-l",
|
|
"--limit",
|
|
default=10,
|
|
type=int,
|
|
help="Limit the number of DNA types shown, default is 10",
|
|
)
|
|
|
|
|
|
def by_total_bytes(info: BlockTypeInfo) -> int:
|
|
return info.total_bytes
|
|
|
|
|
|
def block_key(block: blendfile.BlendFileBlock) -> str:
|
|
return "%s-%s" % (block.dna_type_name, block.code.decode())
|
|
|
|
|
|
def cli_blocks(args):
|
|
bpath = args.blendfile
|
|
if not bpath.exists():
|
|
log.fatal("File %s does not exist", args.blendfile)
|
|
return 3
|
|
|
|
per_blocktype = collections.defaultdict(BlockTypeInfo)
|
|
|
|
print("Opening %s" % bpath)
|
|
bfile = blendfile.BlendFile(bpath)
|
|
|
|
print("Inspecting %s" % bpath)
|
|
for block in bfile.blocks:
|
|
if block.code == b"DNA1":
|
|
continue
|
|
index_as = block_key(block)
|
|
|
|
info = per_blocktype[index_as]
|
|
info.name = index_as
|
|
info.total_bytes += block.size
|
|
info.num_blocks += 1
|
|
info.sizes.append(block.size)
|
|
info.blocks.append(block)
|
|
|
|
fmt = "%-35s %10s %10s %10s %10s"
|
|
print(fmt % ("Block type", "Total Size", "Num blocks", "Avg Size", "Median"))
|
|
print(fmt % (35 * "-", 10 * "-", 10 * "-", 10 * "-", 10 * "-"))
|
|
infos = sorted(per_blocktype.values(), key=by_total_bytes, reverse=True)
|
|
for info in infos[: args.limit]:
|
|
median_size = sorted(info.sizes)[len(info.sizes) // 2]
|
|
print(
|
|
fmt
|
|
% (
|
|
info.name,
|
|
common.humanize_bytes(info.total_bytes),
|
|
info.num_blocks,
|
|
common.humanize_bytes(info.total_bytes // info.num_blocks),
|
|
common.humanize_bytes(median_size),
|
|
)
|
|
)
|
|
|
|
print(70 * "-")
|
|
# From the blocks of the most space-using category, the biggest block.
|
|
biggest_block = sorted(infos[0].blocks, key=lambda blck: blck.size, reverse=True)[0]
|
|
print(
|
|
"Biggest %s block is %s at address %s"
|
|
% (
|
|
block_key(biggest_block),
|
|
common.humanize_bytes(biggest_block.size),
|
|
biggest_block.addr_old,
|
|
)
|
|
)
|
|
|
|
print("Finding what points there")
|
|
addr_to_find = biggest_block.addr_old
|
|
found_pointer = False
|
|
for block in bfile.blocks:
|
|
for prop_path, prop_value in block.items_recursive():
|
|
if not isinstance(prop_value, int) or prop_value != addr_to_find:
|
|
continue
|
|
print(" ", block, prop_path)
|
|
found_pointer = True
|
|
|
|
if not found_pointer:
|
|
print("Nothing points there")
|
|
|
|
if args.dump:
|
|
print("Hexdump:")
|
|
bfile.fileobj.seek(biggest_block.file_offset)
|
|
data = bfile.fileobj.read(biggest_block.size)
|
|
line_len_bytes = 32
|
|
import codecs
|
|
|
|
for offset in range(0, len(data), line_len_bytes):
|
|
line = codecs.encode(data[offset : offset + line_len_bytes], "hex").decode()
|
|
print(
|
|
"%6d -" % offset,
|
|
" ".join(line[i : i + 2] for i in range(0, len(line), 2)),
|
|
)
|