[go-nuts] Re: URL parsing with special characters.

[Brian Candler]

In a URL, the percent sign should appear as %25  (% marks the start of a 
hex-encoded character)
https://play.golang.org/p/gMC1tdpJER4

The URL as shown is invalid.

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[go-nuts] Re: URL parsing with special characters.

[Vivek]

Thanks everyone.

I am using "github.com/jlaffaye/ftp" library which returned unescaped file 
names when doing directory listing. I constructed the full url by doing 

filePath = "ftp://user:pass@192.168.0.1/path/"; + "file%ver3.txt 
"
 
and later tried to parse the url with url.Parse function somewhere else in 
the code which failed.

I am now calling url.Escape on the file names before appending. 

Regards,
Vivek



On Thursday, 30 April 2020 22:35:45 UTC+5:30, Vivek wrote:
>
> I am trying to parse  a url similar to "ftp://
> user:pass@192.168.0.1/path/file%ver3.txt 
> "
>  
> using `net/url` Parse function but I am getting a error
>
> `parse "ftp://user:pass@192.168.0.1/path/file%ver3.txt": invalid URL 
> escape "%ve"`
>
> https://play.golang.org/p/HE6zlDeIbyq 
> 
>
> The same path parses fine with python(urllib.parse.urlparse and C# URI). 
>
> I appreciate any help on this.
>
> Regards,
> Vivek
>

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Re: [go-nuts] Re: URL parsing with special characters.

[Ian Lance Taylor]

On Thu, Apr 30, 2020 at 11:09 AM Brian Candler  wrote:
>
> In a URL, the percent sign should appear as %25  (% marks the start of a 
> hex-encoded character)
> https://play.golang.org/p/gMC1tdpJER4
>
> The URL as shown is invalid.

I *think* you are saying that the u.Path field should use %25 rather
than plain %.  But as the documentation says
(https://golang.org/pkg/net/url/#URL) the Path field is the decoded
form.  If you simply print the URL, you will see %25.  Consider
https://play.golang.org/p/Z0eUYfkm3PR.

If you mean something else, can you explain?  Thanks.

Ian

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Re: [go-nuts] Re: URL parsing with special characters.

[Brian Candler]

On Thursday, 30 April 2020 23:04:01 UTC+1, Ian Lance Taylor wrote:
>
> On Thu, Apr 30, 2020 at 11:09 AM Brian Candler  > wrote: 
> > 
> > In a URL, the percent sign should appear as %25  (% marks the start of a 
> hex-encoded character) 
> > https://play.golang.org/p/gMC1tdpJER4 
> > 
> > The URL as shown is invalid. 
>
> I *think* you are saying that the u.Path field should use %25 rather 
> than plain %.



No: I'm just saying the library is working correctly, by rejecting the 
invalid input that the OP gave.

If the input URL is correct to file%25ver3, then the parsed u.Path contains 
file%ver3 as expected.

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