#! /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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ***** END GPL LICENCE BLOCK *****
######################################################
#
# Name:
# dna.py
#
# Description:
# Creates a browsable DNA output to HTML.
#
# Author:
# Jeroen Bakker
#
# Version:
# v0.1 (12-05-2009) - migration of original source code to python.
# Added code to support blender 2.5 branch
# v0.2 (25-05-2009) - integrated with BlendFileReader.py
#
# Input:
# blender build executable
#
# Output:
# dna.html
# dna.css (will only be created when not existing)
#
# Startup:
# ./blender -P BlendFileDnaExporter.py
#
# Process:
# 1: write blend file with SDNA info
# 2: read blend header from blend file
# 3: seek DNA1 file-block
# 4: read dna record from blend file
# 5: close and eventually delete temp blend file
# 6: export dna to html and css
# 7: quit blender
#
######################################################
import struct
import sys
import getopt # command line arguments handling
from string import Template # strings completion
# logs
import logging
log = logging.getLogger("BlendFileDnaExporter")
if '--dna-debug' in sys.argv:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(level=logging.INFO)
class DNACatalogHTML:
'''
DNACatalog is a catalog of all information in the DNA1 file-block
'''
def __init__(self, catalog, bpy_module = None):
self.Catalog = catalog
self.bpy = bpy_module
def WriteToHTML(self, handle):
dna_html_template = """
The mystery of the blend
Blender ${version}
Architecture: ${bitness} ${endianness}${revision} The mystery of the blend by Jeroen BakkerIndex of blender structures
${structs_content}
"""
header = self.Catalog.Header
bpy = self.bpy
# ${version} and ${revision}
if bpy:
version = '.'.join(map(str, bpy.app.version))
revision = bpy.app.build_revision[:-1]
else:
version = str(header.Version)
revision = 'Unknown'
# ${bitness}
if header.PointerSize == 8:
bitness = '64 bit'
else:
bitness = '32 bit'
# ${endianness}
if header.LittleEndianness:
endianess= 'Little endianness'
else:
endianess= 'Big endianness'
# ${structs_list}
log.debug("Creating structs index")
structs_list = ''
list_item = '({0}) {1} \n'
structureIndex = 0
for structure in self.Catalog.Structs:
structs_list += list_item.format(structureIndex, structure.Type.Name)
structureIndex+=1
# ${structs_content}
log.debug("Creating structs content")
structs_content = ''
for structure in self.Catalog.Structs:
log.debug(structure.Type.Name)
structs_content += self.Structure(structure)
d = dict(
version = version,
revision = revision,
bitness = bitness,
endianness = endianess,
structs_list = structs_list,
structs_content = structs_content
)
dna_html = Template(dna_html_template).substitute(d)
dna_html = self.format(dna_html)
handle.write(dna_html)
def Structure(self, structure):
struct_table_template = """
Total size: ${size} bytes (top )
${reference}
${struct}
${type}
${name}
${offset}
${size}
"""
if field.Type.Structure == None or field.Name.IsPointer():
# ${reference}
reference = field.Name.AsReference(parentReference)
# ${struct}
if parentReference != None:
struct = '{0} '.format(structure.Type.Name)
else:
struct = structure.Type.Name
# ${type}
type = field.Type.Name
# ${name}
name = field.Name.Name
# ${offset}
# offset already set
# ${size}
size = field.Size(self.Catalog.Header)
d = dict(
reference = reference,
struct = struct,
type = type,
name = name,
offset = offset,
size = size
)
structure_field = Template(structure_field_template).substitute(d)
elif field.Type.Structure != None:
reference = field.Name.AsReference(parentReference)
structure_field = self.StructureFields(field.Type.Structure, reference, offset)
return structure_field
def indent(self, input, dent, startswith = ''):
output = ''
if dent < 0:
for line in input.split('\n'):
dent = abs(dent)
output += line[dent:] + '\n' # unindent of a desired amount
elif dent == 0:
for line in input.split('\n'):
output += line.lstrip() + '\n' # remove indentation completely
elif dent > 0:
for line in input.split('\n'):
output += ' '* dent + line + '\n'
return output
def format(self, input):
diff = {
'\n' :'',
'\n' :'',
' ' :' ',
'\n' :'',
'\n' :'',
' \n' :' '
}
output = self.indent(input, 0)
for key, value in diff.items():
output = output.replace(key, value)
return output
def WriteToCSS(self, handle):
'''
Write the Cascading stylesheet template to the handle
It is expected that the handle is a Filehandle
'''
css = """
@CHARSET "ISO-8859-1";
body {
font-family: verdana;
font-size: small;
}
div.title {
font-size: large;
text-align: center;
}
h1 {
page-break-before: always;
}
h1, h2 {
background-color: #D3D3D3;
color:#404040;
margin-right: 3%;
padding-left: 40px;
}
h1:hover{
background-color: #EBEBEB;
}
h3 {
padding-left: 40px;
}
table {
border-width: 1px;
border-style: solid;
border-color: #000000;
border-collapse: collapse;
width: 94%;
margin: 20px 3% 10px;
}
caption {
margin-bottom: 5px;
}
th {
background-color: #000000;
color:#ffffff;
padding-left:5px;
padding-right:5px;
}
tr {
}
td {
border-width: 1px;
border-style: solid;
border-color: #a0a0a0;
padding-left:5px;
padding-right:5px;
}
label {
float:right;
margin-right: 3%;
}
ul.multicolumn {
list-style:none;
float:left;
padding-right:0px;
margin-right:0px;
}
li.multicolumn {
float:left;
width:200px;
margin-right:0px;
}
a {
color:#a000a0;
text-decoration:none;
}
a:hover {
color:#a000a0;
text-decoration:underline;
}
"""
css = self.indent(css, 0)
handle.write(css)
def usage():
print("\nUsage: \n\tblender2.5 --background -noaudio --python BlendFileDnaExporter_25.py [-- [options]]")
print("Options:")
print("\t--dna-keep-blend: doesn't delete the produced blend file DNA export to html")
print("\t--dna-debug: sets the logging level to DEBUG (lots of additional info)")
print("\t--dna-versioned saves version informations in the html and blend filenames")
print("\t--dna-overwrite-css overwrite dna.css, useful when modifying css in the script")
print("Examples:")
print("\tdefault: % blender2.5 --background -noaudio --python BlendFileDnaExporter_25.py")
print("\twith options: % blender2.5 --background -noaudio --python BlendFileDnaExporter_25.py -- --dna-keep-blend --dna-debug\n")
######################################################
# Main
######################################################
def main():
import os, os.path
try:
bpy = __import__('bpy')
# Files
if '--dna-versioned' in sys.argv:
blender_version = '_'.join(map(str, bpy.app.version))
filename = 'dna-{0}-{1}_endian-{2}-r{3}'.format(sys.arch, sys.byteorder, blender_version, bpy.app.build_revision[2:-1])
else:
filename = 'dna'
dir = os.path.dirname(__file__)
Path_Blend = os.path.join(dir, filename + '.blend') # temporary blend file
Path_HTML = os.path.join(dir, filename + '.html') # output html file
Path_CSS = os.path.join(dir, 'dna.css') # output css file
# create a blend file for dna parsing
if not os.path.exists(Path_Blend):
log.info("1: write temp blend file with SDNA info")
log.info(" saving to: " + Path_Blend)
try:
bpy.ops.wm.save_as_mainfile(filepath = Path_Blend, copy = True, compress = False)
except:
log.error("Filename {0} does not exist and can't be created... quitting".format(Path_Blend))
return
else:
log.info("1: found blend file with SDNA info")
log.info(" " + Path_Blend)
# read blend header from blend file
log.info("2: read file:")
if not dir in sys.path:
sys.path.append(dir)
import BlendFileReader
handle = BlendFileReader.openBlendFile(Path_Blend)
blendfile = BlendFileReader.BlendFile(handle)
catalog = DNACatalogHTML(blendfile.Catalog, bpy)
# close temp file
handle.close()
# deleting or not?
if '--dna-keep-blend' in sys.argv:
# keep the blend, useful for studying hexdumps
log.info("5: closing blend file:")
log.info(" {0}".format(Path_Blend))
else:
# delete the blend
log.info("5: close and delete temp blend:")
log.info(" {0}".format(Path_Blend))
os.remove(Path_Blend)
# export dna to xhtml
log.info("6: export sdna to xhtml file")
handleHTML = open(Path_HTML, "w")
catalog.WriteToHTML(handleHTML)
handleHTML.close()
# only write the css when doesn't exist or at explicit request
if not os.path.exists(Path_CSS) or '--dna-overwrite-css' in sys.argv:
handleCSS = open(Path_CSS, "w")
catalog.WriteToCSS(handleCSS)
handleCSS.close()
# quit blender
if not bpy.app.background:
log.info("7: quit blender")
bpy.ops.wm.exit_blender()
except ImportError:
log.warning(" skipping, not running in Blender")
usage()
sys.exit(2)
if __name__ == '__main__':
main()