Here's an snip from my libSodium start: private __safe foreign handler \ MCDataCreateWithBytesAndRelease( \ in pBytes as Pointer, \ in pCount as LCUIndex, \ out rData as Data) \ returns CBool binds to "<builtin>"
private __safe foreign handler \ MCMemoryAllocate( \ in pSize as LCUIndex, \ out rBlock as Pointer) \ returns CBool binds to "<builtin>" private __safe foreign handler \ MCMemoryDeallocate( \ in pBlock as Pointer) \ returns nothing binds to "<builtin>" constant kCrypto_kx_PUBLICKEYBYTES is 32 constant kCrypto_kx_SECRETKEYBYTES is 32 private foreign handler \ _crypto_kx_keypair( \ in pPK as Pointer, /* unsigned char pk[crypto_kx_PUBLICKEYBYTES] */ \ in pSK as Pointer) /* unsigned char sk[crypto_kx_SECRETKEYBYTES] */ \ returns CInt binds to "c:libsodium>crypto_kx_keypair" public handler sodiumKxKeypair(out rPK as Data, out rSK as Data) returns Boolean variable tPKbuffer as Pointer variable tSKbuffer as Pointer if not MCMemoryAllocate(kCrypto_kx_PUBLICKEYBYTES, tPKbuffer) then throw "can't allocate PK buffer" end if if not MCMemoryAllocate(kCrypto_kx_SECRETKEYBYTES, tSKbuffer) then MCMemoryDeallocate(tPKbuffer) throw "can't allocate SK buffer" end if unsafe if _crypto_kx_keypair(tPKbuffer, tSKbuffer) < 0 then MCMemoryDeallocate(tPKbuffer) MCMemoryDeallocate(tSKbuffer) throw "could not get keys" end if end unsafe if not MCDataCreateWithBytesAndRelease(tPKbuffer, \ kCrypto_kx_PUBLICKEYBYTES, rPK) then MCMemoryDeallocate(tPKbuffer) MCMemoryDeallocate(tSKbuffer) throw "error copying PK" end if if not MCDataCreateWithBytesAndRelease(tSKbuffer, \ kCrypto_kx_SECRETKEYBYTES, rSK) then MCMemoryDeallocate(tSKbuffer) throw "error copying SK" end if return true end handler On Thu, Apr 12, 2018 at 9:37 PM, Pi Digital via use-livecode < use-livecode@lists.runrev.com> wrote: > Why on earth would you have to type them? Why not for loop them or > copy-paste or get LC to give you a 1024 char string of them you can > copy-paste in? Odd. > > LCB is very much in its youth especially for java and objc. We have only > the bare minimum of examples and tutorials and documentation of course. > Building a library is very similar to widgets with the exception that they > are not linked to a gui control or display. So they just handle calls and > functions but don’t have an object/control on the card and thus no property > dialogue either. The examples for widgets work practically the same for a > library. But there will be occasional differences you’ll come across as you > go. No doubt Ali will be providing some more info on these in time. But > start digging into it now. I’m still playing around trying to make some > libraries of my own - simple ones to start with. > > All the best. > > Sean Cole > Pi Digital > > > On 13 Apr 2018, at 03:04, Mark Wieder via use-livecode < > use-livecode@lists.runrev.com> wrote: > > > >> On 04/12/2018 06:03 PM, Brian Milby via use-livecode wrote: > >> What language is the library written in? Which platform? I have some > code > >> that I’ve started to put together for libSodium, but I have not done > much > >> more than reference the calls. > > > > Interesting. I started down the libSodium path and gave it up when I > found that I had to create a struct with 1024 individual byte references > for an embedded buffer. There really should be a way to specify a number so > you don't have to type 1024 "h" characters in a row. > > > > -- > > Mark Wieder > > ahsoftw...@gmail.com > > > > > > _______________________________________________ > > use-livecode mailing list > > use-livecode@lists.runrev.com > > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your > subscription preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode > _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
