[DUG] Strange Error in Android

[Jeremy Coulter]

hmm...well that could be. I am just perplexed why its fine when the data in
the string (or DOMString) variable is written then read from a file, and
what is different there as apposed to reading it from a string directly.
Bloody annoying!

Jeremy


On Wed, Dec 4, 2013 at 11:16 AM, Jolyon Smith <jsmith at deltics.co.nz> wrote:

> CR, LF CR+LF - all are whitespace in XML unless in a CDATA but since the
> error is occurring before the parser has even dealt with the <?xml>
> declaration CDATA sections are not likely to be in play here.   If the
> Embarcadero parser on Android is broken by variations in whitespace I would
> think twice about trusting it with anything really complicated.  You know,
> like actual XML.  ;)
>
>   Jeremy Coulter <jscoulter at gmail.com>
>  Wed, 4 Dec 2013 10:27
> Thanks for the replies. I was away yesterday, but I THINK John might be on
> the right track. I will be checking it out and will report back.
>
> Jeremy
>
>
>
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>   Jolyon Smith <jsmith at deltics.co.nz>
>  Tue, 3 Dec 2013 10:50
>
> Could you post the first line of the XML so we can see what it comprises
> of ?  i.e. what XML declaration does the string contain which the parser is
> rejecting ?
>
> As a result of the DOM Vendor implementation model in Delphi, behaviour on
> Windows is no indication of reliability on Android, iOS or OS X (as you are
> finding).
>
> For Android it seems that the key to your problem is in
> XML.Internal.AdomCore_4_3.pas, specifically the EvaluateXmlOrTextDecl()
> method of TXmlInputSource but without knowing what declaration is being
> presented to this method it's impossible to say whether the problem lies
> here, in the process of assigning the string from the HTTP response to the
> XML document or with the content of the XML string itself.
>
> There is potential for many slips twixt this particular cup and lip.
>
>   Robert Martin <rob at chreos.co.nz>
>  Tue, 3 Dec 2013 09:03
>  Hi Jeremy
>
> Never done any Delphi Android work but is it possible it is a character
> set issue?  I am only using XE2 nut if I look at XMLDoc.LoadFromXML() (I
> don't have a LoadXMLData) it takes an AnsiString on at UTF16 delphi string.
>
> Thanks
> Rob
>
>
>  On 2/12/2013 11:40 p.m., Jeremy Coulter wrote:
>
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>   Jeremy Coulter <jscoulter at gmail.com>
>  Mon, 2 Dec 2013 23:40
>
> Hi All.
>
> I am Sending an HTTP request to a server that is returning some XML in an
> Android app.
>
> However, I get an unexpected result. I am using Indy and the idHTTP.get()
> function which returns either a string or populates a stream.
>
> I started out first by loading the results into a string variable, i.e.
> buffer:=isHTTP.get()  which returns the data fine, BUT if I call
> LoadXMLData(buffer)  - (LoadXmlData() is in Xml.XMLDoc.pas) which is a
> function I have used a number of time in Delphi in normal Windows apps and
> never had a problem – that wasn’t something I did J
>
> However, if in the android app, I load the buffer variable into a string
> list then save that to file the  call LoadXMLDocument() that takes a file
> name, it works fine !!
>
> Oh, the error I get is   “ET_INVALID_XML_DECL line:-1” which indicates the
> XML is invalid but if I do a showmessage(buffer) its perfectly fine.
>
> I have tried loading the result into a stream and the reading it out into
> a string and I get the same error. I have tried removing the #13#10’s and
> STILL I get the error. If I write the XML to file first, no problem.
>
> I have tried using String and DOMStrings, but still the same error
>
>
>
> Anyone got any ideas? I shouldn’t have to write the xml to file then load
> it, that’s a bit of a pain.
>
>
>
>
>
> Thanks, Jeremy
>
>
>
>
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