277 lines
9.8 KiB
Python
277 lines
9.8 KiB
Python
#
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# signature.py
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#
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import schema
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import subprocess,re,json,hashlib
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from datetime import datetime
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from pathlib import Path
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#
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# Return all macro names in a header as an array, so we can take
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# the intersection with the preprocessor output, giving a decent
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# reflection of all enabled options that (probably) came from the
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# configuration files. We end up with the actual configured state,
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# better than what the config files say. You can then use the
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# resulting config.ini to produce more exact configuration files.
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#
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def extract_defines(filepath):
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f = open(filepath, encoding="utf8").read().split("\n")
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a = []
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for line in f:
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sline = line.strip()
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if sline[:7] == "#define":
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# Extract the key here (we don't care about the value)
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kv = sline[8:].strip().split()
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a.append(kv[0])
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return a
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# Compute the SHA256 hash of a file
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def get_file_sha256sum(filepath):
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sha256_hash = hashlib.sha256()
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with open(filepath,"rb") as f:
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# Read and update hash string value in blocks of 4K
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for byte_block in iter(lambda: f.read(4096),b""):
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sha256_hash.update(byte_block)
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return sha256_hash.hexdigest()
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#
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# Compress a JSON file into a zip file
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#
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import zipfile
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def compress_file(filepath, outpath):
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with zipfile.ZipFile(outpath, 'w', compression=zipfile.ZIP_BZIP2, compresslevel=9) as zipf:
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zipf.write(filepath, compress_type=zipfile.ZIP_BZIP2, compresslevel=9)
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#
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# Compute the build signature. The idea is to extract all defines in the configuration headers
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# to build a unique reversible signature from this build so it can be included in the binary
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# We can reverse the signature to get a 1:1 equivalent configuration file
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#
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def compute_build_signature(env):
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if 'BUILD_SIGNATURE' in env:
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return
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# Definitions from these files will be kept
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files_to_keep = [ 'Marlin/Configuration.h', 'Marlin/Configuration_adv.h' ]
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build_path = Path(env['PROJECT_BUILD_DIR'], env['PIOENV'])
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# Check if we can skip processing
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hashes = ''
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for header in files_to_keep:
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hashes += get_file_sha256sum(header)[0:10]
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marlin_json = build_path / 'marlin_config.json'
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marlin_zip = build_path / 'mc.zip'
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# Read existing config file
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try:
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with marlin_json.open() as infile:
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conf = json.load(infile)
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if conf['__INITIAL_HASH'] == hashes:
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# Same configuration, skip recomputing the building signature
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compress_file(marlin_json, marlin_zip)
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return
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except:
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pass
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# Get enabled config options based on preprocessor
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from preprocessor import run_preprocessor
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complete_cfg = run_preprocessor(env)
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# Dumb #define extraction from the configuration files
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conf_defines = {}
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all_defines = []
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for header in files_to_keep:
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defines = extract_defines(header)
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# To filter only the define we want
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all_defines += defines
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# To remember from which file it cames from
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conf_defines[header.split('/')[-1]] = defines
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r = re.compile(r"\(+(\s*-*\s*_.*)\)+")
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# First step is to collect all valid macros
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defines = {}
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for line in complete_cfg:
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# Split the define from the value
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key_val = line[8:].strip().decode().split(' ')
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key, value = key_val[0], ' '.join(key_val[1:])
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# Ignore values starting with two underscore, since it's low level
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if len(key) > 2 and key[0:2] == "__" :
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continue
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# Ignore values containing a parenthesis (likely a function macro)
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if '(' in key and ')' in key:
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continue
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# Then filter dumb values
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if r.match(value):
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continue
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defines[key] = value if len(value) else ""
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#
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# Continue to gather data for CONFIGURATION_EMBEDDING or CONFIG_EXPORT
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#
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if not ('CONFIGURATION_EMBEDDING' in defines or 'CONFIG_EXPORT' in defines):
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return
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# Second step is to filter useless macro
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resolved_defines = {}
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for key in defines:
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# Remove all boards now
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if key.startswith("BOARD_") and key != "BOARD_INFO_NAME":
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continue
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# Remove all keys ending by "_NAME" as it does not make a difference to the configuration
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if key.endswith("_NAME") and key != "CUSTOM_MACHINE_NAME":
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continue
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# Remove all keys ending by "_T_DECLARED" as it's a copy of extraneous system stuff
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if key.endswith("_T_DECLARED"):
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continue
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# Remove keys that are not in the #define list in the Configuration list
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if key not in all_defines + [ 'DETAILED_BUILD_VERSION', 'STRING_DISTRIBUTION_DATE' ]:
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continue
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# Don't be that smart guy here
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resolved_defines[key] = defines[key]
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# Generate a build signature now
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# We are making an object that's a bit more complex than a basic dictionary here
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data = {}
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data['__INITIAL_HASH'] = hashes
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# First create a key for each header here
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for header in conf_defines:
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data[header] = {}
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# Then populate the object where each key is going to (that's a O(N^2) algorithm here...)
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for key in resolved_defines:
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for header in conf_defines:
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if key in conf_defines[header]:
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data[header][key] = resolved_defines[key]
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# Every python needs this toy
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def tryint(key):
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try:
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return int(defines[key])
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except:
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return 0
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config_dump = tryint('CONFIG_EXPORT')
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#
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# Produce an INI file if CONFIG_EXPORT == 2
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#
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if config_dump == 2:
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print("Generating config.ini ...")
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config_ini = build_path / 'config.ini'
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with config_ini.open('w') as outfile:
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ignore = ('CONFIGURATION_H_VERSION', 'CONFIGURATION_ADV_H_VERSION', 'CONFIG_EXPORT')
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filegrp = { 'Configuration.h':'config:basic', 'Configuration_adv.h':'config:advanced' }
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vers = defines["CONFIGURATION_H_VERSION"]
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dt_string = datetime.now().strftime("%Y-%m-%d at %H:%M:%S")
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ini_fmt = '{0:40}{1}\n'
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outfile.write(
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'#\n'
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+ '# Marlin Firmware\n'
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+ '# config.ini - Options to apply before the build\n'
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+ '#\n'
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+ f'# Generated by Marlin build on {dt_string}\n'
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+ '#\n'
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+ '\n'
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+ '[config:base]\n'
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+ ini_fmt.format('ini_use_config', ' = all')
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+ ini_fmt.format('ini_config_vers', f' = {vers}')
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)
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# Loop through the data array of arrays
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for header in data:
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if header.startswith('__'):
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continue
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outfile.write('\n[' + filegrp[header] + ']\n')
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for key in sorted(data[header]):
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if key not in ignore:
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val = 'on' if data[header][key] == '' else data[header][key]
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outfile.write(ini_fmt.format(key.lower(), ' = ' + val))
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#
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# Produce a schema.json file if CONFIG_EXPORT == 3
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#
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if config_dump >= 3:
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try:
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conf_schema = schema.extract()
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except Exception as exc:
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print("Error: " + str(exc))
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conf_schema = None
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if conf_schema:
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#
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# Produce a schema.json file if CONFIG_EXPORT == 3
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#
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if config_dump in (3, 13):
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print("Generating schema.json ...")
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schema.dump_json(conf_schema, build_path / 'schema.json')
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if config_dump == 13:
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schema.group_options(conf_schema)
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schema.dump_json(conf_schema, build_path / 'schema_grouped.json')
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#
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# Produce a schema.yml file if CONFIG_EXPORT == 4
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#
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elif config_dump == 4:
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print("Generating schema.yml ...")
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try:
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import yaml
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except ImportError:
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env.Execute(env.VerboseAction(
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'$PYTHONEXE -m pip install "pyyaml"',
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"Installing YAML for schema.yml export",
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))
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import yaml
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schema.dump_yaml(conf_schema, build_path / 'schema.yml')
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# Append the source code version and date
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data['VERSION'] = {}
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data['VERSION']['DETAILED_BUILD_VERSION'] = resolved_defines['DETAILED_BUILD_VERSION']
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data['VERSION']['STRING_DISTRIBUTION_DATE'] = resolved_defines['STRING_DISTRIBUTION_DATE']
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try:
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curver = subprocess.check_output(["git", "describe", "--match=NeVeRmAtCh", "--always"]).strip()
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data['VERSION']['GIT_REF'] = curver.decode()
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except:
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pass
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#
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# Produce a JSON file for CONFIGURATION_EMBEDDING or CONFIG_EXPORT == 1
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#
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if config_dump == 1 or 'CONFIGURATION_EMBEDDING' in defines:
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with marlin_json.open('w') as outfile:
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json.dump(data, outfile, separators=(',', ':'))
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#
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# The rest only applies to CONFIGURATION_EMBEDDING
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#
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if not 'CONFIGURATION_EMBEDDING' in defines:
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return
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# Compress the JSON file as much as we can
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compress_file(marlin_json, marlin_zip)
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# Generate a C source file for storing this array
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with open('Marlin/src/mczip.h','wb') as result_file:
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result_file.write(
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b'#ifndef NO_CONFIGURATION_EMBEDDING_WARNING\n'
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+ b' #warning "Generated file \'mc.zip\' is embedded (Define NO_CONFIGURATION_EMBEDDING_WARNING to suppress this warning.)"\n'
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+ b'#endif\n'
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+ b'const unsigned char mc_zip[] PROGMEM = {\n '
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)
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count = 0
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for b in (build_path / 'mc.zip').open('rb').read():
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result_file.write(b' 0x%02X,' % b)
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count += 1
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if count % 16 == 0:
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result_file.write(b'\n ')
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if count % 16:
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result_file.write(b'\n')
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result_file.write(b'};\n')
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