No Windows console found. Are you running cmd.exe?

[swanknight]

I'm trying to create a GUI for lncrawl (using .NET 5) but I cam across an odd issue, when I try to run lncrawl from my UI I keep getting an error: "No Windows console found. Are you running cmd.exe?"

These are the parameters I used for my test:

lncrawl -s https://novelfull.com/i-alone-level-up.html -o "D:\" --all -f --format epub --single

[dipu-bd]

Try like this:

using System.Diagnostics;

Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.FileName = "cmd.exe";
startInfo.Arguments = "/C lncrawl -s https://novelfull.com/i-alone-level-up.html -o "D:\" --all -f --format epub --single";
process.StartInfo = startInfo;
process.Start();

[swanknight]

Try like this:

using System.Diagnostics;

Process process = new Process();
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.WindowStyle = ProcessWindowStyle.Hidden;
startInfo.FileName = "cmd.exe";
startInfo.Arguments = "/C lncrawl -s https://novelfull.com/i-alone-level-up.html -o "D:\" --all -f --format epub --single";
process.StartInfo = startInfo;
process.Start();

It doesn't work. I need to redirect the output to my UI (RichTextox) and it doesn't work if I try to use "cmd".
I've made plenty of GUI applications before but I never needed to run "cmd", so something is odd with lncrawl.

[dipu-bd]

Add --suppress argument. it will stop prompting any command line inputs. e.g.: lncrawl -s https://novelfull.com/i-alone-level-up.html -o "D:\" --all -f --format epub --single --suppress

[swanknight]

--suppress

That did fix the error but for some reason, it's not creating the epub file. I can see that it created the json folder and downloaded the content but nothing happens in the end. This is the output I get in my "console":

================================================================================
                         [#] Lightnovel Crawler v2.28.11 
                  https://github.com/dipu-bd/lightnovel-crawler 
--------------------------------------------------------------------------------
 ! Input is suppressed
--------------------------------------------------------------------------------
Namespace(add_source_url=False, all=True, bot=None, chapters=None, crawler=[], extra={}, filename=None, filename_only=False, first=None, force=True, ignore=False, last=None, list_sources=False, log=None, login=None, multi=False, novel_page='https://novelfull.com/i-alone-level-up.html', output_formats=['epub'], output_path='D:\\', page=None, query=None, range=None, shard_count=1, shard_id=0, single=True, suppress=True, volumes=None)

-> Press  Ctrl + C  to exit

Retrieving novel info...
https://novelfull.com/i-alone-level-up.html
NOVEL: I Alone Level-Up
3 volumes and 270 chapters found

[dipu-bd]

it is showing output_formats=['epub'] as argument. that means the problem is somewhere else. try running it again with -lll option. it will print more details log

[swanknight]

Adding -lll doesn't seem to display anything new, and it doesn't download anything after adding it.
Also, it's strange that even though that without -lll it does download the chapters and creates the json folder, I see no progress in the log.

================================================================================
                         [#] Lightnovel Crawler v2.28.11 
                  https://github.com/dipu-bd/lightnovel-crawler 
--------------------------------------------------------------------------------
                          << LOG LEVEL: DEBUG
--------------------------------------------------------------------------------
 ! Input is suppressed
--------------------------------------------------------------------------------
Namespace(add_source_url=False, all=True, bot=None, chapters=None, crawler=[], extra={}, filename=None, filename_only=False, first=None, force=True, ignore=False, last=None, list_sources=False, log=3, login=None, multi=False, novel_page='https://novelfull.com/i-alone-level-up.html', output_formats=['epub'], output_path='D:\\', page=None, query=None, range=None, shard_count=1, shard_id=0, single=True, suppress=True, volumes=None)

-> Press  Ctrl + C  to exit

Retrieving novel info...
https://novelfull.com/i-alone-level-up.html
NOVEL: I Alone Level-Up
3 volumes and 270 chapters found

[dipu-bd]

Without any error log, I don't know how to solve the issue.

There was an old issue for command line encoding. #927 #882 #892

Check if this is the cause.

[swanknight]

Without any error log, I don't know how to solve the issue.

There was an old issue for command line encoding. #927 #882 #892

Check if this is the cause.

Unfortunately the -lll doesn't display anything and as I said, it even refuses to even download when used.
The strange thing is when I ran lncrawl separately through cmd using the exact same parameters it's working fine.

Update: funny thing, when I used i instead of f it worked...sometimes. Yep, using the exact same parameters it worked sometimes and failed sometimes. This is too bizzare.

[dipu-bd]

Any update on this? Can you check the latest version?

[swanknight]

Any update on this? Can you check the latest version?

Hi again, I finally figured it out! I use RedirectStandardOutput to get lncrawl's output into my form, but for some strange reason the progress part of the output is not actually treated as "Output", instead it's treated as an "Error".

I have no idea why this happens, but the workaround is to also use RedirectStandardError and combine it with RedirectStandardOutput into a single event to get the full output. And it worked!

That's the good news. The bad news is that I ran into another issue. lncrawl doesn't close automatically after it finishes, instead it waits for input from the user (press Ctrl + C?) which cause the process to remain in the memory even after it completes the download, which in turn causes many issues in my code.

I imagine a somewhat simple solution is that you add a new argument (ex: --auto-close) that automatically closes the console window once it finishes without requiring a user command. What do you think? Or is there another way to achieve this?

[dipu-bd]

It is a windows only feature. Window's exe builds closes automatically after it is done. But some users did not want that to happen. Since you can not even see what the error is if it closes automatically after it is done.

I suggest modifying the source as you need, and building your own exe package. Just run python setup.py package to make an exe.

Do these modifications to lncrawl/core/__init__.py to get what you want:

• Remove line 88 to 94 to hide Ctrl + C at the end.
• Insert os.environ['LOG_LEVEL'] = 'DEBUG' after line 24 if you want to hide the progressbars

[swanknight]

It is a windows only feature. Window's exe builds closes automatically after it is done. But some users did not want that to happen. Since you can not even see what the error is if it closes automatically after it is done.

I suggest modifying the source as you need, and building your own exe package. Just run python setup.py package to make an exe.

Do these modifications to lncrawl/core/__init__.py to get what you want:

• Remove line 88 to 94 to hide Ctrl + C at the end.
• Insert os.environ['LOG_LEVEL'] = 'DEBUG' after line 24 if you want to hide the progressbars

I understand that not everyone would want that, hence my suggestion of it being an optional argument/parameter.
As for modifying the source myself, I'm afraid I know nothing about Python and even if I did, it wouldn't be a good idea.
I'm trying to create a generic GUI for lncrawl which would automatically download the latest version from GitHub.
I don't wanna lock it to only one custom version, it will lead to problems down the line for sure.

[dipu-bd]

I have added a command --close-directly to suppress the input. It will be available from the next release.

[swanknight]

I have added a command --close-directly to suppress the input. It will be available from the next release.

That's awesome, thanks.