Hi Esteban, not sure I'm understanding your snippet correctly.
Below is my try. It throws a SubscriptOutOfBounds exception in the last line. The reason is that the implementation of ByteArray replaceFrom:to:with:startingAt: does not consider that ea is meant to be a pointer to a C byte array, not an object whose content is to be copied directly.
| ea ba | ea := ExternalAddress gcallocate: 200. ba := ByteArray new: 100. ba replaceFrom: 1 to: 50 with: ea startingAt: 51. Am I missing some point? On 2017-02-21 17:20, Esteban Lorenzano wrote:
usually, something more or less like this: sourceByteArrayOrExternalAddress := … some ... destEnternalAddressOrByteArray replaceFrom: 1 to: sourceByteArrayOrExternalAddress size with: sourceByteArrayOrExternalAddress startingAt: 1 and or course you can play with the starting points and sizes. cheers, EstebanOn 21 Feb 2017, at 17:13, Raffaello Giulietti <raffaello.giulie...@lifeware.ch> wrote: Hi, I'm having a hard time finding documentation on how to copy a portion of a ByteArray to/from another portion of a heap allocated C byte array with UFFI. My current reference is https://ci.inria.fr/pharo-contribution/view/Books/job/PharoBookWorkInProgress/lastSuccessfulBuild/artifact/book-result/UnifiedFFI/UnifiedFFI.pdf Thanks for directing me at relevant docs or examples and sorry in advance if I missed some important point in the docs. RG
