[Gambas-user] Re gular Expression Help

[hinchy]

Thanks lads, that's really nice code, a big help. If you get a chance maybe
you could explain how regular expressions are used in gambas.

I know the documentation says:

DIM hRegexp AS Regexp
hRegexp = NEW Regexp ( [ Subject AS String, Pattern AS String,
CompileOptions AS Integer, ExecOptions AS Integer ] )

I can't really figure out how to apply this though.
Thanks again.







M0E Lnx wrote:
> 
> Throw it into an array..
> 
> DIM sList as string[]
> dim sStr as string
> DIM i as integer
> dim sOneDev as string
> 
> SHELL "ls -m /dev | grep [sh]d[a-z]" to sStr
> sList = Split(sStr, ",")
> 
> FOR i = 0 to sList.Count - 1
> sOneDev = left(trim(sList[i]), 3)
> Print sOneDev
> Next
> 
> This first, produce a list separated by commas, then use a gambas
> array to separate the array into separate strings. After that, you run
> the FOR Loop to trim out the text you need
> 
> Unless I'm not understanding this right.
> 
> 
> On 5/27/08, Stefano Palmeri <rospolosco at ...152...> wrote:
>> Il Tuesday 27 May 2008 18:17:23 Stefano Palmeri ha scritto:
>>
>> > Il Tuesday 27 May 2008 17:22:35 hinchy ha scritto:
>>  > > Yeah I thought about doing something like that, the thing is though,
>> I
>>  > > won't always know how long the first word is. With the regex I can
>> match
>>  > > until the first white space. Is there a way of doing that with text
>>  > > splitting? If so great. If not is there anywhere you could suggest I
>> look
>>  > > for example regex implementation in gambas?
>>  > >
>>  > > Thanks again.
>>  >
>>  > I don't understand your problem (my fault). Here's a way to
>>  > extracy only "sda".
>>  >
>>  >   DIM sStr, sOneDev AS String
>>  >
>>  >   SHELL "ls /dev | grep [sh]d[a-z]" TO sStr
>>  >
>>  >   FOR EACH sOneDev IN Split(sStr, "\n")
>>  >
>>  >     IF sOneDev = "sda" THEN BREAK
>>  >
>>  >   NEXT
>>  >
>>  >   PRINT sOneDev
>>  >
>>  > Bye
>>  >
>>
>>
>> or:
>>
>>  IF sOneDev LIKE "sd[a-z]" THEN BREAK
>>
>>
>>
>>
>>
>>
>>
>>
>>  > > M0E Lnx wrote:
>>  > > > why not just do some text splitting to get what you need?
>>  > > >
>>  > > > If you have "sda1" and you only want "sda" out of that... you
>> should
>>  > > > be able to go with Newstring=left(sStr, 3)
>>  > > >
>>  > > > On 5/27/08, hinchy <eoinhinchy at ...626...> wrote:
>>  > > >>  keywords: regex, Regular Expression, regexp, pcre
>>  > > >>
>>  > > >>  Hi guys,
>>  > > >>
>>  > > >>  I've been struggling with the pcre component for a couple of
>> days
>>  > > >> now. I'm
>>  > > >>  running the command:
>>  > > >>  SHELL "ls /dev | grep [sh]d[a-z]" TO sStr
>>  > > >>
>>  > > >>  This will return something along the lines of:
>>  > > >>  sda
>>  > > >>  sda1
>>  > > >>  sda2
>>  > > >>
>>  > > >>  I then want to run the regular expression ^[^\s]*+ against sStr
>> to
>>  > > >> return
>>  > > >>  sda for saving in a different string but I can't for the life of
>> my
>>  > > >> figure
>>  > > >>  it out.
>>  > > >>  Any ideas? I'm sure it's quite simple I just can't get it
>> together.
>>  > > >>  Thanks,
>>  > > >>  Eoin
>>  > > >>  --
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>>  > > >>
>>  > > >>
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