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|
# function zfuget {
# Get a list of files from the server with update.
# In other words, only retrieve files which are newer than local
# ones. This depends on the clocks being adjusted correctly
# (i.e. if one is fifteen minutes out, for the next fifteen minutes
# updates may not be correctly calculated). However, difficult
# cases --- where the files are the same size, but the remote is newer,
# or have different sizes, but the local is newer -- are prompted for.
#
# Files are globbed on the remote host --- assuming, of course, they
# haven't already been globbed local, so use 'noglob' e.g. as
# `alias zfuget="noglob zfuget"'.
#
# Options:
# -G Glob: turn off globbing
# -v verbose: print more about the files listed.
# -s silent: don't ask, just guess. The guesses are:
# - if the files have different sizes but remote is older ) grab
# - if they have the same size but remote is newer )
# which is safe if the remote files are always the right ones.
# -t time: update the local file times to the same time as the remote.
# Currently this only works if you have the `perl' command,
# and that perl is version 5 with the standard library.
# See the function zfrtime for more gory details.
emulate -L zsh
local loc rem locstats remstats doit tmpfile=${TMPPREFIX}zfuget$$
local rstat remlist opt opt_v opt_s opt_G opt_t
integer stat do_close
zfuget_print_time() {
local tim=$1
print -n "$tim[1,4]/$tim[5,6]/$tim[7,8] $tim[9,10]:$tim[11,12].$tim[13,14]"
print -n GMT
}
zfuget_print () {
print -n "\nremote $rem ("
zfuget_print_time $remstats[2]
print -n ", $remstats[1] bytes)\nlocal $loc ("
zfuget_print_time $locstats[2]
print ", $locstats[1] bytes)"
}
while getopts :vsGt opt; do
[[ $opt = "?" ]] && print "zfuget: bad option: -$OPTARG" >&2 && return 1
eval "opt_$opt=1"
done
(( OPTIND > 1 )) && shift $(( OPTIND - 1 ))
zfautocheck || return 1
for remlist in $*; do
# zfcd directory hack to put the front back to ~
if [[ $remlist == $HOME || $remlist == $HOME/* ]]; then
remlist="~${remlist#$HOME}"
fi
if [[ $opt_n != 1 ]]; then
zfrglob remlist
fi
if (( $#remlist )); then
for rem in $remlist; do
loc=${rem:t}
doit=y
remstats=()
if [[ -f $loc ]]; then
zftp local $loc >$tmpfile
locstats=($(<$tmpfile))
zftp remote $rem >$tmpfile
rstat=$?
remstats=($(<$tmpfile))
rm -f $tmpfile
if [[ $rstat = 2 ]]; then
print "Server does not implement full command set required." 1>&2
return 1
elif [[ $rstat = 1 ]]; then
print "File not found on server: $rem" 1>&2
stat=1
continue
fi
[[ $opt_v = 1 ]] && zfuget_print
if (( $locstats[1] != $remstats[1] )); then
# Files have different sizes
if [[ $locstats[2] > $remstats[2] && $opt_s != 1 ]]; then
[[ $opt_v != 1 ]] && zfuget_print
print "Local file $loc more recent than remote," 1>&2
print -n "but sizes are different. Transfer anyway [y/n]? " 1>&2
read -q doit
fi
else
# Files have same size
if [[ $locstats[2] < $remstats[2] ]]; then
if [[ $opt_s != 1 ]]; then
[[ $opt_v != 1 ]] && zfuget_print
print "Local file $loc has same size as remote," 1>&2
print -n "but local file is older. Transfer anyway [y/n]? " 1>&2
read -q doit
fi
else
# presumably same file, so don't get it.
[[ $opt_v = 1 ]] && print Not transferring
doit=n
fi
fi
else
[[ $opt_v = 1 ]] && print New file $loc
fi
if [[ $doit = y ]]; then
if zftp get $rem >$loc; then
if [[ $opt_t = 1 ]]; then
# if $remstats is set, it's second element is the remote time
zfrtime $loc $rem $remstats[2]
fi
else
stat=$?
fi
fi
done
fi
done
(( do_close )) && zfclose
return $stat
# }
|
