295 lines
10 KiB
Python
295 lines
10 KiB
Python
#!/usr/bin/env python3
|
|
#
|
|
# This file is part of the MicroPython project, http://micropython.org/
|
|
#
|
|
# The MIT License (MIT)
|
|
#
|
|
# Copyright (c) 2019 Damien P. George
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included in
|
|
# all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
# THE SOFTWARE.
|
|
|
|
from __future__ import print_function
|
|
import sys
|
|
import os
|
|
import subprocess
|
|
|
|
|
|
###########################################################################
|
|
# Public functions to be used in the manifest
|
|
|
|
def include(manifest):
|
|
"""Include another manifest.
|
|
|
|
The manifest argument can be a string (filename) or an iterable of
|
|
strings.
|
|
|
|
Relative paths are resolved with respect to the current manifest file.
|
|
"""
|
|
|
|
if not isinstance(manifest, str):
|
|
for m in manifest:
|
|
include(m)
|
|
else:
|
|
manifest = convert_path(manifest)
|
|
with open(manifest) as f:
|
|
# Make paths relative to this manifest file while processing it.
|
|
# Applies to includes and input files.
|
|
prev_cwd = os.getcwd()
|
|
os.chdir(os.path.dirname(manifest))
|
|
exec(f.read())
|
|
os.chdir(prev_cwd)
|
|
|
|
def freeze(path, script=None, opt=0):
|
|
"""Freeze the input, automatically determining its type. A .py script
|
|
will be compiled to a .mpy first then frozen, and a .mpy file will be
|
|
frozen directly.
|
|
|
|
`path` must be a directory, which is the base directory to search for
|
|
files from. When importing the resulting frozen modules, the name of
|
|
the module will start after `path`, ie `path` is excluded from the
|
|
module name.
|
|
|
|
If `path` is relative, it is resolved to the current manifest.py.
|
|
Use $(MPY_DIR), $(MPY_LIB_DIR), $(PORT_DIR), $(BOARD_DIR) if you need
|
|
to access specific paths.
|
|
|
|
If `script` is None all files in `path` will be frozen.
|
|
|
|
If `script` is an iterable then freeze() is called on all items of the
|
|
iterable (with the same `path` and `opt` passed through).
|
|
|
|
If `script` is a string then it specifies the filename to freeze, and
|
|
can include extra directories before the file. The file will be
|
|
searched for in `path`.
|
|
|
|
`opt` is the optimisation level to pass to mpy-cross when compiling .py
|
|
to .mpy.
|
|
"""
|
|
|
|
freeze_internal(KIND_AUTO, path, script, opt)
|
|
|
|
def freeze_as_str(path):
|
|
"""Freeze the given `path` and all .py scripts within it as a string,
|
|
which will be compiled upon import.
|
|
"""
|
|
|
|
freeze_internal(KIND_AS_STR, path, None, 0)
|
|
|
|
def freeze_as_mpy(path, script=None, opt=0):
|
|
"""Freeze the input (see above) by first compiling the .py scripts to
|
|
.mpy files, then freezing the resulting .mpy files.
|
|
"""
|
|
|
|
freeze_internal(KIND_AS_MPY, path, script, opt)
|
|
|
|
def freeze_mpy(path, script=None, opt=0):
|
|
"""Freeze the input (see above), which must be .mpy files that are
|
|
frozen directly.
|
|
"""
|
|
|
|
freeze_internal(KIND_MPY, path, script, opt)
|
|
|
|
|
|
###########################################################################
|
|
# Internal implementation
|
|
|
|
KIND_AUTO = 0
|
|
KIND_AS_STR = 1
|
|
KIND_AS_MPY = 2
|
|
KIND_MPY = 3
|
|
|
|
VARS = {}
|
|
|
|
manifest_list = []
|
|
|
|
class FreezeError(Exception):
|
|
pass
|
|
|
|
def system(cmd):
|
|
try:
|
|
output = subprocess.check_output(cmd, stderr=subprocess.STDOUT)
|
|
return 0, output
|
|
except subprocess.CalledProcessError as er:
|
|
return -1, er.output
|
|
|
|
def convert_path(path):
|
|
# Perform variable substituion.
|
|
for name, value in VARS.items():
|
|
path = path.replace('$({})'.format(name), value)
|
|
# Convert to absolute path (so that future operations don't rely on
|
|
# still being chdir'ed).
|
|
return os.path.abspath(path)
|
|
|
|
def get_timestamp(path, default=None):
|
|
try:
|
|
stat = os.stat(path)
|
|
return stat.st_mtime
|
|
except OSError:
|
|
if default is None:
|
|
raise FreezeError('cannot stat {}'.format(path))
|
|
return default
|
|
|
|
def get_timestamp_newest(path):
|
|
ts_newest = 0
|
|
for dirpath, dirnames, filenames in os.walk(path, followlinks=True):
|
|
for f in filenames:
|
|
ts_newest = max(ts_newest, get_timestamp(os.path.join(dirpath, f)))
|
|
return ts_newest
|
|
|
|
def mkdir(path):
|
|
cur_path = ''
|
|
for p in path.split('/')[:-1]:
|
|
cur_path += p + '/'
|
|
try:
|
|
os.mkdir(cur_path)
|
|
except OSError as er:
|
|
if er.args[0] == 17: # file exists
|
|
pass
|
|
else:
|
|
raise er
|
|
|
|
def freeze_internal(kind, path, script, opt):
|
|
path = convert_path(path)
|
|
if script is None and kind == KIND_AS_STR:
|
|
if any(f[0] == KIND_AS_STR for f in manifest_list):
|
|
raise FreezeError('can only freeze one str directory')
|
|
manifest_list.append((KIND_AS_STR, path, script, opt))
|
|
elif script is None:
|
|
for dirpath, dirnames, filenames in os.walk(path, followlinks=True):
|
|
for f in filenames:
|
|
freeze_internal(kind, path, (dirpath + '/' + f)[len(path) + 1:], opt)
|
|
elif not isinstance(script, str):
|
|
for s in script:
|
|
freeze_internal(kind, path, s, opt)
|
|
else:
|
|
extension_kind = {KIND_AS_MPY: '.py', KIND_MPY: '.mpy'}
|
|
if kind == KIND_AUTO:
|
|
for k, ext in extension_kind.items():
|
|
if script.endswith(ext):
|
|
kind = k
|
|
break
|
|
else:
|
|
print('warn: unsupported file type, skipped freeze: {}'.format(script))
|
|
return
|
|
wanted_extension = extension_kind[kind]
|
|
if not script.endswith(wanted_extension):
|
|
raise FreezeError('expecting a {} file, got {}'.format(wanted_extension, script))
|
|
manifest_list.append((kind, path, script, opt))
|
|
|
|
def main():
|
|
# Parse arguments
|
|
import argparse
|
|
cmd_parser = argparse.ArgumentParser(description='A tool to generate frozen content in MicroPython firmware images.')
|
|
cmd_parser.add_argument('-o', '--output', help='output path')
|
|
cmd_parser.add_argument('-b', '--build-dir', help='output path')
|
|
cmd_parser.add_argument('-f', '--mpy-cross-flags', default='', help='flags to pass to mpy-cross')
|
|
cmd_parser.add_argument('-v', '--var', action='append', help='variables to substitute')
|
|
cmd_parser.add_argument('files', nargs='+', help='input manifest list')
|
|
args = cmd_parser.parse_args()
|
|
|
|
# Extract variables for substitution.
|
|
for var in args.var:
|
|
name, value = var.split('=', 1)
|
|
if os.path.exists(value):
|
|
value = os.path.abspath(value)
|
|
VARS[name] = value
|
|
|
|
if 'MPY_DIR' not in VARS or 'PORT_DIR' not in VARS:
|
|
print('MPY_DIR and PORT_DIR variables must be specified')
|
|
sys.exit(1)
|
|
|
|
# Get paths to tools
|
|
MAKE_FROZEN = VARS['MPY_DIR'] + '/tools/make-frozen.py'
|
|
MPY_CROSS = VARS['MPY_DIR'] + '/mpy-cross/mpy-cross'
|
|
MPY_TOOL = VARS['MPY_DIR'] + '/tools/mpy-tool.py'
|
|
|
|
# Ensure mpy-cross is built
|
|
if not os.path.exists(MPY_CROSS):
|
|
print('mpy-cross not found at {}, please build it first'.format(MPY_CROSS))
|
|
sys.exit(1)
|
|
|
|
# Include top-level inputs, to generate the manifest
|
|
for input_manifest in args.files:
|
|
try:
|
|
if input_manifest.endswith('.py'):
|
|
include(input_manifest)
|
|
else:
|
|
exec(input_manifest)
|
|
except FreezeError as er:
|
|
print('freeze error executing "{}": {}'.format(input_manifest, er.args[0]))
|
|
sys.exit(1)
|
|
|
|
# Process the manifest
|
|
str_paths = []
|
|
mpy_files = []
|
|
ts_newest = 0
|
|
for kind, path, script, opt in manifest_list:
|
|
if kind == KIND_AS_STR:
|
|
str_paths.append(path)
|
|
ts_outfile = get_timestamp_newest(path)
|
|
elif kind == KIND_AS_MPY:
|
|
infile = '{}/{}'.format(path, script)
|
|
outfile = '{}/frozen_mpy/{}.mpy'.format(args.build_dir, script[:-3])
|
|
ts_infile = get_timestamp(infile)
|
|
ts_outfile = get_timestamp(outfile, 0)
|
|
if ts_infile >= ts_outfile:
|
|
print('MPY', script)
|
|
mkdir(outfile)
|
|
res, out = system([MPY_CROSS] + args.mpy_cross_flags.split() + ['-o', outfile, '-s', script, '-O{}'.format(opt), infile])
|
|
if res != 0:
|
|
print('error compiling {}: {}'.format(infile, out))
|
|
raise SystemExit(1)
|
|
ts_outfile = get_timestamp(outfile)
|
|
mpy_files.append(outfile)
|
|
else:
|
|
assert kind == KIND_MPY
|
|
infile = '{}/{}'.format(path, script)
|
|
mpy_files.append(infile)
|
|
ts_outfile = get_timestamp(infile)
|
|
ts_newest = max(ts_newest, ts_outfile)
|
|
|
|
# Check if output file needs generating
|
|
if ts_newest < get_timestamp(args.output, 0):
|
|
# No files are newer than output file so it does not need updating
|
|
return
|
|
|
|
# Freeze paths as strings
|
|
res, output_str = system([sys.executable, MAKE_FROZEN] + str_paths)
|
|
if res != 0:
|
|
print('error freezing strings {}: {}'.format(str_paths, output_str))
|
|
sys.exit(1)
|
|
|
|
# Freeze .mpy files
|
|
res, output_mpy = system([sys.executable, MPY_TOOL, '-f', '-q', args.build_dir + '/genhdr/qstrdefs.preprocessed.h'] + mpy_files)
|
|
if res != 0:
|
|
print('error freezing mpy {}: {}'.format(mpy_files, output_mpy))
|
|
sys.exit(1)
|
|
|
|
# Generate output
|
|
print('GEN', args.output)
|
|
mkdir(args.output)
|
|
with open(args.output, 'wb') as f:
|
|
f.write(b'//\n// Content for MICROPY_MODULE_FROZEN_STR\n//\n')
|
|
f.write(output_str)
|
|
f.write(b'//\n// Content for MICROPY_MODULE_FROZEN_MPY\n//\n')
|
|
f.write(output_mpy)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|