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74 lines
2.3 KiB
Python

#!/usr/bin/env python
import zlib, base64, sys, argparse, os
from gzipreader import GzipReader
from b64reader import Base64Reader
parser = argparse.ArgumentParser(description="Creates an SFX from a specified archive or file.")
parser.add_argument("-a", help="Treat the input file as a tar.gz archive that needs to be extracted upon running the SFX.", action="store_true", dest="is_archive")
parser.add_argument("-s", help="Define a command to be run after extraction of the SFX. %%NAME will be replaced with the path of the extracted file or folder. "
"For archives, the working directory is set to the extraction directory.", action="store", dest="command")
parser.add_argument("input_file", metavar="INPUTFILE", type=str, nargs=1, help="The file to read from. Use a dash (-) to read from STDIN instead.")
parser.add_argument("output_file", metavar="OUTPUTFILE", type=str, nargs=1, help="The file to write to. Use a dash (-) to write to STDOUT instead.")
options = vars(parser.parse_args())
if options['input_file'][0] == "-":
infile = sys.stdin
extension = "dat"
else:
infile = open(options['input_file'][0], "rb")
extension = os.path.splitext(options['input_file'][0])
if options['output_file'][0] == "-":
outfile = sys.stdout
else:
outfile = open(options['output_file'][0], "wb")
if options['is_archive'] == True:
is_archive = "True"
extension = "tar.gz"
else:
is_archive = "False"
if options['command']:
run_after_extract = "True"
command = options['command']
else:
run_after_extract = "False"
command = ""
template = open("%s/unpack.template" % os.path.dirname(__file__), "r")
variables = {
"run_after_extract": run_after_extract,
"targz": is_archive,
"extension": extension,
"command": command
}
for curline in template:
if curline.startswith('"""EOFDATA'):
# Found the EOF data marker, insert packed data before
# moving on with the next line.
outfile.write(curline)
data = b""
reader = Base64Reader(GzipReader(infile))
chunk_size = 128
while True:
chunk = reader.read(chunk_size)
if chunk == "":
break
outfile.write(chunk + "\n")
else:
if "{%" in curline:
for variable_key, variable_value in variables.iteritems():
curline = curline.replace("{%%%s}" % variable_key, variable_value)
outfile.write(curline)
outfile.close()