Re: [xml-dev] URI regex ?

[Michael Kay <mike@saxonica.com>]

Michael Sperberg-McQueen has defined XSD types (and regexes) that match different flavours of URI in

http://www.w3.org/2011/04/XMLSchema/TypeLibrary-URI-RFC3986.xsd

and

http://www.w3.org/2011/04/XMLSchema/TypeLibrary-IRI-RFC3987.xsd

To see the way these complex regular expressions are constructed, view these documents at the raw XML level using (for example) curl.

Michael Kay
Saxonica


> On 4 May 2016, at 10:52, Christophe Marchand <cmarchand@oxiane.com> wrote:
> 
> Hi all !
> 
> I have to rewrite URI in many files :
> 
> * xsl
> * schemas
> * RNG/RNC grammars
> * schematrons
> * nvdl
> * DTD
> * etc...
> 
> 
> I exactly know the protocol(s) of the URI I have to rewrite, so I can detect all URIs by a starting string
> As I have to work on various file types, and as URI may be in known tags (xsl:import, sch:validate, ...) as in variables or anywhere else, I would like to process the files as text files.
> 
> I have 2 questions :
> 
> * files may use various encoding. Is there a pre-defined encoding
>   where URI are always correct ? Or should I check the file encoding
>   before reading it ?
> * Is there a regex I can use to detect the end of the URI, knowing the
>   start of the URI ? Reading RFC3987 is not so easy...
> 
> 
> Thanks in advance,
> Christophe
> 
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