Fix issue #9187 Handle wallabag server url with trailing slash(es)

[clach04]

This change is 

[clach04]

This code is 100% untested with KoReader ;-)

It's been tested in isolation in a lua interpreter on my desktop though.

#!/usr/bin/lua
my_str = "http://somesite.com////";
print(my_str);
print("stripping")
while my_str:sub(-1) == "/" do
  my_str = my_str:sub(1, -2);
end
print(my_str);

[hius07]

Maybe simpler my_str = my_str:gsub("/*$", "")

[Frenzie]

I meant a bug with the server configuration really.

[Frenzie]

As @hius07 wrote you'd want to collapse and remove any number of / if you did this, but I'd rather do so on entry, so if this causes any issues it's relatively easy to diagnose ("the program keeps removing my slashes!") rather than completely hidden.

[Frenzie]

So over here:

koreader/plugins/wallabag.koplugin/main.lua

Line 1061 in 2df4d45

self.server_url = myfields[1]

[clach04]

Thanks @hius07 and @Frenzie for the gentle feedback!

I pushed a replacement change with the two suggestions: cleaner/smaller strip code and in the config area.

From my perspective this is a bug in Wallabag (server), it is really sensitive, but we can clean up the config client side :-)

[clach04]

@Frenzie anything else I need to do on this one?

[Frenzie]

Yup, hope that it doesn't lead to trouble. ;-)