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natural / java2python

Simple but effective library to translate Java source code to Python.
GNU Lesser General Public License v2.1
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issues while launching from windows 10 cmd #78

Closed apws closed 2 years ago

apws commented 2 years ago

hi, I installed j2py, found that its required to rename it to scripts/j2py.py and then I was forced to assign .py to python.exe (2.7), as this was assigned elsewhere (I dont know if this is not the root cause of problem below)

when I run j2py then, it immediatelly expects input from stdin and its unable even to try "j2py --version" nor "j2py --help". When I close Ctrl+Z the stdin, it outputs something, ya

Interesting is that when I open j2py.py in Wing IDE and try to DEBUG this file, having passed --help or --version, it works. ArgumentParser handles this well and does its job. When I pass say class.java as argument, then it expects it as inputfile and writes to stdout "IOError: No such file or directory." ...

from win cmd, I am simply unable to specify inputfile/outputfile as file, nor any arguments with -- ... I dont know python much, so no ArgumentParser issues, but it seems its somewhere near it. And I expect its somehow related to how win cmd works, as this tool was probably designed on linux. Interesting is that in IDE debugging its behaving differently

thanks

apws commented 2 years ago

this code simply returns None in opt.inputfile after return from configScript(argv) in win cmd shell, so ArgumentParser doesnt parse inputfile/outputfile arguments correctly - niside Wing IDE it works... j2py.py pastebin

later in runTransform at line 113 is opened sys.stdin for read because of filein '-' really the main cause is None stored into inputfile by ArgumentParser

I dont know why

apws commented 2 years ago

well, I found that this may be problem ... running with python "j2py.py" --help works on my machine too https://stackoverflow.com/questions/11695147/using-argparse-in-python-and-default-file-association

apws commented 2 years ago

ok, so THIS is correct registry open command for Python.File: "C:\Python27\python.exe" "%1" %* honestly, I only edited and resaved this in registry ... it was here!