Matching strings not ending with .html

Question

I want to redirect my website users when they hit a REST path without the trailing slash.

Example.

http://mywebsite.my/it/products/brand/name => http://mywebsite.my/it/products/brand/name/
http://mywebsite.my/it/products => http://mywebsite.my/it/products/
http://mywebsite.my => http://mywebsite.my/

http://mywebsite.my/it/products/brand/name/code.html => ???

Well, I don't want the last one to be rewritten, I don't want the trailing slash when the URL ends with .html.

I'm working with URL rewrite module of IIS7, and this is my "slash-rule".

<rule name="SLASHFINALE" stopProcessing="true">
    <match url="(.*[^/])$" />
    <conditions>
        <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
        <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
    </conditions>
    <action type="Redirect" redirectType="Permanent" url="{R:1}/" />
</rule>

In other words, if the input url matches that regex (everything not ending with a slash), I rewrite the same URL adding the trailing slash.

So my rule would be the same, but with that little addition: rewrite all URLs, except the ones (already) having the trailing slash or the ones ending with ".html".

I wrote this

(.*(?<!html)[^\/])$

but I can't understand why it's not working.

Your lookbehind (if supported), is not at the good place, put it at the end of the pattern and add the dot (escaped) to avoid confusion with for example `phtml` — Casimir et Hippolyte, Dec 11 '14 at 16:34
(.*[^/](?<!html))$ this works, but not in actual IIS7! Is that lookbehind supported? — Fabio B., Dec 11 '14 at 16:38
In this case, use a lookahead instead, but like that: `(?!.*\.html$).*[^/]$` — Casimir et Hippolyte, Dec 11 '14 at 16:40
I'm trying that, indeed it works but it is always matching: (when I have .html the capturing group is always html) — Fabio B., Dec 11 '14 at 16:43
`(?!.*\.html$)(.*[^/])$` I haven't written the capture group. — Casimir et Hippolyte, Dec 11 '14 at 16:47
Ok sorry, I didn't explain myself. Your regex works perfectly. http://mywebsite.my/it/products/brand/name/code.htm matches all and that's ok, http://mywebsite.my/it/products/brand/name/code.html matches "html", in that last case I don't want my pattern to match at all — Fabio B., Dec 11 '14 at 16:51

score 0 · Accepted Answer · answered Dec 15 '14 at 15:00

0

IIS Javascript-flavored regex parser does not support conditional expressions.

I ended up with this:

<match url="(.*[^\.]...[^\/]$)" />

Enough for me.

answered Dec 15 '14 at 15:00

Fabio B.

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Matching strings not ending with .html

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