Tasmota/pio-tools/gzip-firmware.py

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Import("env")
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import os
import shutil
import gzip
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import pathlib
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import tasmotapiolib
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def map_gzip(source, target, env):
# create string with location and file names based on variant
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map_file = tasmotapiolib.get_final_map_path(env)
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if map_file.is_file():
gzip_file = map_file.with_suffix(".map.gz")
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# check if new target map files exist and remove if necessary
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if gzip_file.is_file():
gzip_file.unlink()
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# write gzip map file
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with map_file.open("rb") as fp:
with gzip.open(gzip_file, "wb", compresslevel=9) as f:
shutil.copyfileobj(fp, f)
# remove map file
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if map_file.is_file():
map_file.unlink()
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if not tasmotapiolib.is_env_set(tasmotapiolib.DISABLE_MAP_GZ, env):
env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", [map_gzip])
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# gzip only for ESP8266
if env["PIOPLATFORM"] != "espressif32":
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def bin_gzip(source, target, env):
# create string with location and file names based on variant
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bin_file = tasmotapiolib.get_final_bin_path(env)
gzip_file = bin_file.with_suffix(".bin.gz")
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# check if new target files exist and remove if necessary
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if os.path.isfile(gzip_file):
os.remove(gzip_file)
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# write gzip firmware file
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with open(bin_file, "rb") as fp:
with gzip.open(gzip_file, "wb", compresslevel=9) as f:
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shutil.copyfileobj(fp, f)
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ORG_FIRMWARE_SIZE = bin_file.stat().st_size
GZ_FIRMWARE_SIZE = gzip_file.stat().st_size
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if ORG_FIRMWARE_SIZE > 995326:
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print(
"\u001b[31;1m!!! Tasmota firmware size is too big with {} bytes. Max size is 995326 bytes !!! \u001b[0m".format(
ORG_FIRMWARE_SIZE
)
)
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else:
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print(
"Compression reduced firmware size by {:.0f}% (was {} bytes, now {} bytes)".format(
(GZ_FIRMWARE_SIZE / ORG_FIRMWARE_SIZE) * 100,
ORG_FIRMWARE_SIZE,
GZ_FIRMWARE_SIZE,
)
)
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if not tasmotapiolib.is_env_set(tasmotapiolib.DISABLE_BIN_GZ, env):
env.AddPostAction("$BUILD_DIR/${PROGNAME}.bin", [bin_gzip])