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esp-link/mkespfs.py

43 lines
1.3 KiB

#! /usr/bin/python3
from sys import argv, exit, stderr, stdout
from pathlib import Path
import re, gzip, struct
MAGIC = 0x73665345
FL_GZIP = 2 # gzipped file flag
FL_LAST = 1 # last entry file flag
if len(argv) != 2 or not Path(argv[1]).is_dir():
print("Usage: {} directory".format(argv[0]), file=stderr)
exit(1)
dir = argv[1]
f_html = list(Path(dir).rglob('*.html'))
f_css = list(Path(dir).rglob('*.css'))
f_js = list(Path(dir).rglob('*.js'))
f_img = list(Path(dir).rglob('*.ico')) + list(Path(dir).rglob('*.png'))
f_all = f_html + f_css + f_js + f_img
for fn in f_all:
if not fn.is_file(): continue
out_path = fn.relative_to(dir).as_posix().encode('ascii')
info = fn.stat()
data_un = fn.read_bytes()
data_comp = gzip.compress(data_un)
print("Processing {} -> {}[{}], {}->{} bytes".format(fn, out_path, len(out_path), info.st_size,
len(data_comp)), file=stderr)
header = struct.pack('<IBBHII', MAGIC, FL_GZIP, 0, len(out_path), len(data_comp), info.st_size)
stdout.buffer.write(header)
stdout.buffer.write(out_path)
if len(out_path)%4 != 0:
stdout.buffer.write(bytes(4)[:4-len(out_path)%4])
stdout.buffer.write(data_comp)
if len(data_comp)%4 != 0:
stdout.buffer.write(bytes(4)[:4-len(data_comp)%4])
trailer = struct.pack('<IBBHII', MAGIC, FL_LAST, 0, 0, 0, 0)
print("DONE", file=stderr)