/usr/share/zsh/functions/Zftp/zfcput is in zsh-common 5.1.1-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 | # function zfcput {
# Continuation put of files from remote server.
# For each file, if it's shorter over there, put the remainder from
# over here. This uses append, which is standard, so unlike zfcget it's
# expected to work on any reasonable server... err, as long as it
# supports SIZE and MDTM. (It could be enhanced so you can enter the
# size so far by hand.) You should probably be in binary transfer
# mode, thought it's not enforced.
#
# To read from midway through a local file, `tail +<n>c' is used.
# It would be nice to find a way of doing this which works on all OS's.
emulate -L zsh
[[ $curcontext = :zf* ]] || local curcontext=:zfcput
local loc rem stat=0 locst remst offs tailtype
# find how tail works. this is intensely annoying, since it's completely
# standard in C. od's no use, since we can only skip whole blocks.
if [[ $(echo abcd | tail +2c) = bcd ]]; then
tailtype=c
elif [[ $(echo abcd | tail --bytes=+2) = bcd ]]; then
tailtype=b
else
print "I can't get your \`tail' to start from arbitrary characters.\n" \
"If you know how to do this, let me know." 2>&1
return 1
fi
for loc in $*; do
# zfcd directory hack to put the front back to ~
rem=$loc
if [[ $rem = $HOME || $rem = $HOME/* ]]; then
rem="~${rem#$HOME}"
fi
if [[ ! -r $loc ]]; then
print "Can't read file $loc"
stat=1
else
# Compare the sizes.
locst=($(zftp local $loc))
() {
zftp remote $rem >|$1
rstat=$?
remst=($(<$1))
} =(<<<'temporary file')
if [[ $rstat = 2 ]]; then
print "Server does not support remote status commands.\n" \
"You will have to find out the size by hand and use zftp append." 2>&1
stat=1
continue
elif [[ $rstat = 1 ]]; then
# Not found, so just do a standard put.
zftp put $rem <$loc
elif [[ $remst[1] -gt $locst[1] ]]; then
print "Remote file is larger!" 2>&1
continue;
elif [[ $locst[1] == $remst[1] ]]; then
print "Files are already the same size." 2>&1
continue
else
# tail +<N>c takes the count of the character
# to start from, not the offset from zero. if we did
# this with years, then 2000 would be 1999. no y2k bug!
# brilliant.
(( offs = $remst[1] + 1 ))
if [[ $tailtype = c ]]; then
tail +${offs}c $loc | zftp append $rem || stat=1
else
tail --bytes=+$offs $loc | zftp append $rem || stat=1
fi
fi
fi
done
return $stat
# }
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