On Mon, Apr 22, 2024 at 2:23 PM Oliver Webb <aquahobby...@proton.me> wrote: > > > On Sat, Apr 20, 2024 at 7:38 PM Oliver Webb via Toybox > > toybox@lists.landley.net wrote: > > > > xxd also runs on average about 5 times slower than vim xxd, this is > > > because of read reading 16 bytes at a time, also not hard to fix, but > > > very hard to fix cleanly. > > > > > > really? a quick glance suggests it reads blocks of sizeof(toybuf)? (or > > "whatever stdio is using for its buffer" in the -r case.) > > strace-ing it shows: > > read(0, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16) = 16 > > And if you pass in -c 12 to it: > > read(0, "\0\0\0\0\0\0\0\0\0\0\0\0", 12) = 12 > > In practice, it's always what -c is
ah, yeah, the _include_ path uses the full buffer and -r uses stdio buffering, but "regular" xxd was doing neither. i've sent out the trivial patch to switch to stdio. > > > xxd has a -d flag to do decimal address lables that I added in this patch. > > > > do you have a use for that? i saw it and ignored it when > > implementing toybox xxd because i couldn't even imagine a use for > > decimal addresses... > > Trying to do math with them in awk or expr or some other program where numbers > are always read as base 10: > > $ head -c 0xf > head: invalid number of bytes: ‘0xf’ > > I think the ability to read base 16 numbers and prefixes in toybox is a really > cool consequence of everything being in one binary. But almost every other > utility > set doesn't have it because most aren't multi-call binaries. > > - Oliver Webb aquahobby...@proton.me > _______________________________________________ Toybox mailing list Toybox@lists.landley.net http://lists.landley.net/listinfo.cgi/toybox-landley.net
