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https://github.com/fish-shell/fish-shell
synced 2024-12-26 12:53:13 +00:00
bd18736ee5
Using bare vars is more efficient because it makes the builtin `math` expression cache more useful. That's because if you prefix each var with a dollar-sign then the fish parser expands it before `math` is run. Something like `math x + 1` can be cached since the expression is the same each time it is run. But if you do `math $x + 1` and x==1 then you're effectively executing `math 1 + 1`. And if x==2 the next time then you're running `math 2 + 1`. Which makes the expression cache much less effective.
147 lines
4.5 KiB
Fish
147 lines
4.5 KiB
Fish
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function __fish_print_packages
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# apt-cache is much, much faster than rpm, and can do this in real
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# time. We use it if available.
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switch (commandline -ct)
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case '-**'
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return
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end
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#Get the word 'Package' in the current language
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set -l package (_ "Package")
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# Set up cache directory
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if test -z "$XDG_CACHE_HOME"
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set XDG_CACHE_HOME $HOME/.cache
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end
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mkdir -m 700 -p $XDG_CACHE_HOME
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if type -q -f apt-cache
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# Do not generate the cache as apparently sometimes this is slow.
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# http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=547550
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apt-cache --no-generate pkgnames (commandline -ct) ^/dev/null | sed -e 's/$/'\t$package'/'
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return
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end
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# Pkg is fast on FreeBSD and provides versioning info which we want for
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# installed packages
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if begin
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type -q -f pkg
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and test (uname) = "FreeBSD"
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end
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pkg query "%n-%v"
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return
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end
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# Caches for 5 minutes
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if type -q -f pacman
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set cache_file $XDG_CACHE_HOME/.pac-cache.$USER
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if test -f $cache_file
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cat $cache_file
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set -l x (date +%s)
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set -l y (stat -c '%Y' $cache_file)
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set age (math x - y)
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set max_age 250
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if test $age -lt $max_age
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return
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end
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end
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# prints: <package name> Package
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pacman -Ssq | sed -e 's/$/\t'$package'/' >$cache_file &
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return
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end
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# Zypper needs caching as it is slow
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if type -q -f zypper
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# Use libzypp cache file if available
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if test -f /var/cache/zypp/solv/@System/solv.idx
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awk '!/application:|srcpackage:|product:|pattern:|patch:/ {print $1'\t$package'}' /var/cache/zypp/solv/*/solv.idx
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return
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end
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# If the cache is less than five minutes old, we do not recalculate it
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set -l cache_file $XDG_CACHE_HOME/.zypper-cache.$USER
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if test -f $cache_file
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cat $cache_file
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set -l x (date +%s)
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set -l y (stat -c '%Y' $cache_file)
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set -l age (math x - y)
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set -l max_age 300
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if test $age -lt $max_age
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return
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end
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end
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# Remove package version information from output and pipe into cache file
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zypper --quiet --non-interactive search --type=package | tail -n +4 | sed -r 's/^. \| ((\w|[-_.])+).*/\1\t'$package'/g' >$cache_file &
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return
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end
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# yum is slow, just like rpm, so go to the background
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if type -q -f /usr/share/yum-cli/completion-helper.py
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# If the cache is less than six hours old, we do not recalculate it
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set cache_file $XDG_CACHE_HOME/.yum-cache.$USER
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if test -f $cache_file
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cat $cache_file
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set -l x (date +%s)
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set -l y (stat -c '%Y' $cache_file)
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set age (math x - y)
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set max_age 21600
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if test $age -lt $max_age
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return
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end
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end
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# Remove package version information from output and pipe into cache file
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/usr/share/yum-cli/completion-helper.py list all -d 0 -C | sed "s/\..*/\t$package/" >$cache_file &
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return
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end
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# Rpm is too slow for this job, so we set it up to do completions
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# as a background job and cache the results.
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if type -q -f rpm
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# If the cache is less than five minutes old, we do not recalculate it
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set cache_file $XDG_CACHE_HOME/.rpm-cache.$USER
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if test -f $cache_file
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cat $cache_file
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set -l x (date +%s)
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set -l y (stat -c '%Y' $cache_file)
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set age (math x - y)
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set max_age 250
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if test $age -lt $max_age
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return
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end
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end
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# Remove package version information from output and pipe into cache file
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rpm -qa | sed -e 's/-[^-]*-[^-]*$/\t'$package'/' >$cache_file &
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return
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end
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# This completes the package name from the portage tree.
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# True for installing new packages. Function for printing
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# installed on the system packages is in completions/emerge.fish
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# eix is MUCH faster than emerge so use it if it is available
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if type -q -f eix
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eix --only-names "^"(commandline -ct) | cut -d/ -f2
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return
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else
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# FIXME? Seems to be broken
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if type -q -f emerge
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emerge -s \^(commandline -ct) | string match -r "^\*.*" | cut -d' ' -f3 | cut -d/ -f2
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return
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end
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end
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end
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