Re: [ros-general] writing file manager / how to use lex?

[Robert Köpferl]

Jan Tisje schrieb:
>   hi, 
>  
>  I started to write a file manager.... 
>  
>  my target is to make it easy to use but very powerful and flexible. 
>  apart from windows fs, it will support many filesystems (eg. nfs, http,
>  ftp, webdav... ) 
I'd suggest to support an not existing FTP-FS which may work by putting 
connection data in a special file.

>   One point is to show if and how the "C:, D:"
> drive assignment  may be
>  overcome.
>  So i will use URLs.  
???  Maybe that would be one solution we should put into the win32 sub 
system so that any app can use them...

>   The most important part missing is an URL parser. 
>  **** does anyone know how to use lex to generate a parser? ****
>  
>  I write in delphi, so the interesting part of the lex file will be the
>  left side, finding the URL components.  
Find a RegEx engine for Delphi and parse this regular language via 
regular expressions.
>   
>  there are BNFs available for URL, but 
>  BNF is no standard, so syntax is odd (to me) 
>  lex does not expect BNF but it's own format. 
>  
>  URI, BNF in appendix A
>  http://www.faqs.org/rfcs/rfc2396.html
>  URL, BNF in chapter 5
>  http://www.faqs.org/rfcs/rfc1738.html
>  
>  
>  btw, the filemanager will use plugins to view the file contents. 
>  **** Who wants to write some plugin DLLs? ****
>  they may be written in C, interface will be strictly WinAPI standard. 
>  
>  There will be two types of DLLs
>  - those that render to a windows device context (or bitmap, I do not
>  know yet)
>  - and those that convert a file to a HTML representation. 
>  
>  (yes, the file manager already is capable to display html, without IE!)
>  
>  Jan
>  
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