Still can't pipe console output (#1065 not fixed)

This is basically re-opening #1065; the patch in 28a9895 did not fix the problem.

Prerequisites

• Did you read FAQ section in readme.md?
• Did you test with the latest releases or commit ? (Yes, git master)
• Did you search for existing issues in Issues?

Description

AttributeError: 'NoneType' object has no attribute 'set_title'.

The patch that closed #1065 did not actually fix the issue.

Steps to Reproduce

1. $ PixivUtil2 --help |cat (on Unix)

Expected behavior: help text should print to standard output.

Actual behavior:

Traceback (most recent call last):
  File "/home/fake-user-name/bin/PixivUtil2", line 1566, in <module>
    main()
  File "/home/fake-user-name/bin/PixivUtil2", line 1359, in main
    set_console_title()
  File "/home/fake-user-name/bin/PixivUtil2", line 1044, in set_console_title
    PixivHelper.set_console_title(set_title)
  File "/home/fake-user-name/development/PixivUtil2/PixivHelper.py", line 389, in set_console_title
    sys.stdout.write(f'\33]0;{title}\a')
  File "/usr/lib/python3/dist-packages/colorama/ansitowin32.py", line 41, in write
    self.__convertor.write(text)
  File "/usr/lib/python3/dist-packages/colorama/ansitowin32.py", line 162, in write
    self.write_and_convert(text)
  File "/usr/lib/python3/dist-packages/colorama/ansitowin32.py", line 184, in write_and_convert
    text = self.convert_osc(text)
  File "/usr/lib/python3/dist-packages/colorama/ansitowin32.py", line 256, in convert_osc
    winterm.set_title(params[1])
AttributeError: 'NoneType' object has no attribute 'set_title'

Also, you have embedded xterm-specific escape sequences into the program. These sequences do not render correctly on anything but xterm. A real VT100 or VT220, or any number of other terminals, would exhibit undefined behavior.

Log file: [Attach the pixivutil.log file in the application folder, recommended to delete the old file, reproduce the issue, and upload the newly generated file here]

Log file is blank.

Versions

Git master. Commit 3495f52.

PixivDownloader2 version 20211104

Changing the function to:

def set_console_title(title):
    if platform.system() == "Windows":
        try:
            subprocess.call('title' + ' ' + title, shell=True)
        except FileNotFoundError:
            print_and_log("error", f"Cannot set console title to {title}")
        except AttributeError:
            # Issue #1065
            pass
    else:
        if "xterm" in os.getenv("TERM"):
            try:
                sys.stdout.write(f'\33]0;{title}\a')
                sys.stdout.flush()
            except AttributeError:
                pass

Fixes the issue, and also makes it only attempt to set the title string with xterm escape codes on xterm and similar terminals.

[cglmrfreeman]

Can confirm on my system python3 PixivUtil2.py --help | cat produces an identical error.

[Nandaka]

merged 😄