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[git completions] Speed up __fish_git_files with lots of files

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- Cache translations instead of calling `gettext` once per file

- Only do the ":/" thing if the file isn't in $PWD/**

For a git repo created like

```fish
git init
touch a(seq 0 1000)b
```

this changes the time from about 2s to 0.3s.
This commit is contained in:
Fabian Homborg 2018-03-13 13:47:17 +01:00
parent 4057cfdce5
commit b2d887860a
1 changed files with 30 additions and 12 deletions
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42
share/completions/git.fish
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@ -74,6 +74,18 @@ function __fish_git_files
# Save the repo root to remove it from the path later.
set -l root (command git rev-parse --show-toplevel ^/dev/null)
# Cache the translated descriptions so we don't have to get it
# once per file.
# This is slightly slower for < 8 files, but that is fast enough anyway.
set -l unmerged_desc (_ "Unmerged File")
set -l added_desc (_ "Added file")
set -l modified_desc (_ "Modified file")
set -l staged_modified_desc (_ "Staged modified file")
set -l deleted_desc (_ "Deleted file")
set -l staged_deleted_desc (_ "Staged deleted file")
set -l untracked_desc (_ "Untracked file")
set -l ignored_desc (_ "Ignored file")
# git status --porcelain gives us all the info we need, in a format we don't.
# The v2 format has better documentation and doesn't use " " to denote anything,
# but it's only been added in git 2.11.0, which was released November 2016.
@ -88,8 +100,10 @@ function __fish_git_files
| while read -lz -d '' line
# The entire line is the "from" from a rename.
if set -q use_next[1]
contains -- $use_next $argv
and string replace -- "$PWD/" "" "$root/$line" | string replace "$root/" ":/"
if contains -- $use_next $argv
string replace -- "$PWD/" "" "$root/$line"
or string replace "$root/" ":/" "$root/$line"
end
set -e use_next[1]
continue
end
@ -102,18 +116,22 @@ function __fish_git_files
set -l stat (string sub -l 2 -- $line)
set -l file (string sub -s 4 -- $line)
# Print files from the current $PWD as-is, prepend all others with ":/" (relative to toplevel in git-speak)
# This is a bit simplistic but finding the lowest common directory and then replacing everything else in $PWD with ".." is a bit annoying
set file (string replace -- "$PWD/" "" "$root/$file" | string replace "$root/" ":/")
# This is a bit simplistic but finding the lowest common directory
# and then replacing everything else in $PWD with ".." is a bit annoying
set file (string replace -- "$PWD/" "" "$root/$file"; or string replace -- "$root/" ":/" "$root/$file")
set -e IFS
# The basic status format is "XY", where X is "our" state (meaning the staging area),
# and "Y" is "their" state (meaning the work tree).
# A " " means it's unmodified.
#
# Be careful about the ordering here!
switch "$stat"
case DD AU UD UA DU AA UU
# Unmerged
# TODO: It might be useful to split this up.
contains -- unmerged $argv
and printf '%s\t%s\n' "$file" (_ "Unmerged file")
and printf '%s\t%s\n' "$file" $unmerged_desc
case 'R ' RM RD
# Renamed/Copied
# These have the "from" name as the next batch.
@ -127,36 +145,36 @@ function __fish_git_files
# Additions are only shown here if they are staged.
# Otherwise it's an untracked file.
contains -- added $argv; or contains -- all-staged $argv
and printf '%s\t%s\n' "$file" (_ "Added file")
and printf '%s\t%s\n' "$file" $added_desc
case '?M'
# Modified
contains -- modified $argv
and printf '%s\t%s\n' "$file" (_ "Modified file")
and printf '%s\t%s\n' "$file" $modified_desc
case 'M?'
# If the character is first ("M "), then that means it's "our" change,
# which means it is staged.
# This is useless for many commands - e.g. `checkout` won't do anything with this.
# So it needs to be requested explicitly.
contains -- modified-staged $argv; or contains -- all-staged $argv
and printf '%s\t%s\n' "$file" (_ "Staged modified file")
and printf '%s\t%s\n' "$file" $staged_modified_desc
case '?D'
contains -- deleted $argv
and printf '%s\t%s\n' "$file" (_ "Deleted file")
and printf '%s\t%s\n' "$file" $deleted_desc
case 'D?'
# TODO: The docs are unclear on this.
# There is both X unmodified and Y either M or D ("not updated")
# and Y is D and X is unmodified or [MARC] ("deleted in work tree").
# For our purposes, we assume this is a staged deletion.
contains -- deleted-staged $argv; or contains -- all-staged $argv
and printf '%s\t%s\n' "$file" (_ "Staged deleted file")
and printf '%s\t%s\n' "$file" $staged_deleted_desc
case '\?\?'
# Untracked
contains -- untracked $argv
and printf '%s\t%s\n' "$file" (_ "Untracked file")
and printf '%s\t%s\n' "$file" $untracked_desc
case '!!'
# Ignored
contains -- ignored $argv
and printf '%s\t%s\n' "$file" (_ "Ignored file")
and printf '%s\t%s\n' "$file" $ignored_desc
end
end
end