PureBasic Forums - English

Posted: **Wed Jan 07, 2026 7:33 am**

Compare case 1 and 2. In both cases the 1 GB XML file is loaded in memory first. In case 1 I use CatchXML from that memory, in case 2 I load the file again from disk. In both cases the same amount of memory is availabe, but case 1 fails, case 2 works.

Code: Select all

filename$ = "/Users/lebostein/x.xml"

; Load file into memory
fileid = ReadFile(#PB_Any, filename$)
*memory = AllocateMemory(Lof(fileid))
ReadData(fileid, *memory, MemorySize(*memory))
CloseFile(fileid)

Select 1

  Case 1

    ; Catch XML from memory above
    XML = CatchXML(#PB_Any, *memory, MemorySize(*memory))
    If XMLStatus(XML): Debug XMLError(XML): Else: Debug "OK": EndIf ; ---> "out of memory"

  Case 2

    ; Load XML from disc
    XML = LoadXML(#PB_Any, filename$)
    If XMLStatus(XML): Debug XMLError(XML): Else: Debug "OK": EndIf ; ---> OK

EndSelect

Posted: **Wed Jan 07, 2026 11:19 am**

Any chance to share you XML (in PM if you want) ?

Posted: **Wed Jan 07, 2026 5:31 pm**

What is the result of this:

Code: Select all

; Load file into memory
fileid = ReadFile(#PB_Any, filename$)
If FileID
  *memory = AllocateMemory(Lof(fileid))
  If *memory
    If ReadData(fileid, *memory, MemorySize(*memory)) <> MemorySize(*memory)
      Debug "Was not able to read all bytes"
    Else
      Debug "Ok"
    EndIf
  Else
    Debug "Was not able to allocate memory"
  EndIf
  CloseFile(fileid)
Else
  Debug "Was not able to open file"
EndIf

Posted: **Wed Jan 07, 2026 6:09 pm**

I think it's a limitation of expat, you need to use streaming for bigger file (we use this in loadxml() but not in catchxml). I will see what can be done

Posted: **Thu Jan 08, 2026 2:50 pm**

I changed the way CatchXML works, feel free to test it

PureBasic Forums - English

[Done] Why CatchXML needs more memory then LaodXML?

[Done] Why CatchXML needs more memory then LaodXML?

Re: Why CatchXML needs more memory then LaodXML?

Re: Why CatchXML needs more memory then LaodXML?

Re: Why CatchXML needs more memory then LaodXML?

Re: Why CatchXML needs more memory then LaodXML?