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https://github.com/fish-shell/fish-shell
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[completions/git] Allow relative paths for files
This is _ugly_ because it is implemented for both status --porcelain formats, but it is both fast and accurate.
This commit is contained in:
Fabian Homborg
parent
f25a1d720a
commit
7b86062720
1 changed files with 242 additions and 98 deletions
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@ -89,74 +89,194 @@ function __fish_git_files
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# Save the repo root to remove it from the path later.
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set -l root (command git rev-parse --show-toplevel 2>/dev/null)
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# Do not continue if not inside a Git repository
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or return
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# Cache the translated descriptions so we don't have to get it
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# once per file.
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# This is slightly slower for < 8 files, but that is fast enough anyway.
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set -l unmerged_desc (_ "Unmerged File")
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set -l added_desc (_ "Added file")
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set -l modified_desc (_ "Modified file")
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set -l staged_modified_desc (_ "Staged modified file")
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set -l deleted_desc (_ "Deleted file")
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set -l staged_deleted_desc (_ "Staged deleted file")
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set -l untracked_desc (_ "Untracked file")
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set -l ignored_desc (_ "Ignored file")
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contains -- unmerged $argv; and set -l unmerged
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and set -l unmerged_desc (_ "Unmerged File")
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contains -- added $argv; or contains -- all-staged $argv; and set -l added
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and set -l added_desc (_ "Added file")
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contains -- modified $argv; and set -l modified
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and set -l modified_desc (_ "Modified file")
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contains -- untracked $argv; and set -l untracked
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and set -l untracked_desc (_ "Untracked file")
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contains -- modified-staged $argv; or contains -- all-staged $argv; and set -l modified_staged
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and set -l staged_modified_desc (_ "Staged modified file")
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contains -- deleted $argv; and set -l deleted
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and set -l deleted_desc (_ "Deleted file")
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contains -- deleted-staged $argv; or contains -- all-staged $argv; and set -l deleted_staged
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and set -l staged_deleted_desc (_ "Staged deleted file")
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contains -- ignored $argv; and set -l ignored
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and set -l ignored_desc (_ "Ignored file")
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contains -- renamed $argv; and set -l renamed
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and set -l renamed_desc (_ "Renamed file")
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contains -- copied $argv; and set -l copied
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and set -l copied_desc (_ "Copied file")
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# A literal "?" for use in `case`.
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set -l q '\\?'
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if status test-feature qmark-noglob
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set q '?'
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end
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set -l use_next
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# git status --porcelain gives us all the info we need, in a format we don't.
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# The v2 format has better documentation and doesn't use " " to denote anything,
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# but it's only been added in git 2.11.0, which was released November 2016.
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# Instead, we use the v1 format, without explicitly specifying it (since that errors out as well).
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#
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# Also, we ignore submodules because they aren't useful as arguments (generally),
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# and they slow things down quite significantly.
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# E.g. `git reset $submodule` won't do anything (not even print an error).
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# --ignore-submodules=all was added in git 1.7.2, released July 2010.
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set -l use_next
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command git status --porcelain -z --ignore-submodules=all \
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| while read -lz -d '' line
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#
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set -l status_opt --ignore-submodules=all
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# If we aren't looking for untracked/ignored files, let git status skip them.
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set -q untracked; and set -a status_opt -unormal
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or set -a status_opt -uno
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set -q ignored; and set -a status_opt --ignored=matching
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or set -a status_opt --ignored=no
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# We pick the v2 format if we can, because it shows relative filenames (if used without "-z").
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# We fall back on the v1 format by reading git's _version_, because trying v2 first is too slow.
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set -l ver (command git --version | string replace -rf 'git version (\d+)\.(\d+)\.?.*' '$1\n$2')
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# Version >= 2.11.* has the v2 format.
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if test "$ver[1]" -gt 2 2>/dev/null; or test "$ver[1]" -eq 2 -a "$ver[2]" -ge 11 2>/dev/null
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# We need to set status.relativePaths to true because we want relative paths,
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# and core.quotePath to false so characters > 0x80 (i.e. non-ASCII) aren't escaped.
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command git -c status.relativePaths -c core.quotePath= status --porcelain=2 $status_opt \
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| while read -la -d ' ' line
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set -l file
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set -l desc
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# The basic status format is "XY", where X is "our" state (meaning the staging area),
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# and "Y" is "their" state.
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# A "." means it's unmodified.
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switch "$line[1..2]"
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case 'u *'
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# Unmerged
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# "Unmerged entries have the following format; the first character is a "u" to distinguish from ordinary changed entries."
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# "u <xy> <sub> <m1> <m2> <m3> <mW> <h1> <h2> <h3> <path>"
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# This is first to distinguish it from normal modifications et al.
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set -ql unmerged
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and set file "$line[11..-1]"
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and set desc $unmerged_desc
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case '2 .R*' '2 R.*'
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# Renamed/Copied
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# From the docs: "Renamed or copied entries have the following format:"
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# "2 <XY> <sub> <mH> <mI> <mW> <hH> <hI> <X><score> <path><sep><origPath>"
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# Since <sep> is \t, we can't really parse it unambiguously.
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# The "-z" format would be great here!
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set -ql renamed
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and set file (string replace -r '\t[^\t]*' '' -- "$line[10..-1]")
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and set desc $renamed_desc
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case '2 .C*' '2 C.*'
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set -ql copied
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and set file (string replace -r '\t[^\t].*' '' -- "$line[10..-1]")
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and set desc $copied_desc
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case '1 A.*'
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# Additions are only shown here if they are staged.
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# Otherwise it's an untracked file.
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set -ql added
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and set file "$line[9..-1]"
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and set desc $added_desc
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case '1 .M*'
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# Modified
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# From the docs: "Ordinary changed entries have the following format:"
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# "1 <XY> <sub> <mH> <mI> <mW> <hH> <hI> <path>"
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# Since <path> can contain spaces, print from element 9 onwards
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set -ql modified
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and set file "$line[9..-1]"
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and set desc $modified_desc
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case '1 M.*'
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# If the character is first ("M."), then that means it's "our" change,
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# which means it is staged.
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# This is useless for many commands - e.g. `checkout` won't do anything with this.
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# So it needs to be requested explicitly.
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set -ql modified_staged
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and set file "$line[9..-1]"
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and set desc $staged_modified_desc
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case '1 .D*'
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set -ql deleted
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and set file "$line[9..-1]"
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and set desc $deleted_desc
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case '1 D.*'
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# TODO: The docs are unclear on this.
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# There is both X unmodified and Y either M or D ("not updated")
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# and Y is D and X is unmodified or [MARC] ("deleted in work tree").
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# For our purposes, we assume this is a staged deletion.
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set -ql deleted-staged; or set -ql all-staged
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and set file "$line[9..-1]"
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and set desc $staged_deleted_desc
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case "$q"' *'
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# Untracked
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# "? <path>" - print from element 2 on.
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set -ql untracked
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and set file "$line[2..-1]"
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and set desc $untracked_desc
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case '! *'
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# Ignored
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# "! <path>" - print from element 2 on.
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set -ql ignored
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and set file "$line[2..-1]"
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and set desc $ignored_desc
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end
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# Only try printing if the file was selected.
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if set -q file[1]
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# Without "-z", git sometimes _quotes_ filenames.
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# It adds quotes around it _and_ escapes the character.
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# e.g. `"a\\b"`.
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# We just remove the quotes and hope it works out.
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# If this contains newlines or tabs,
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# there is nothing we can do, but that's a general issue with scripted completions.
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set file (string trim -c \" -- $file)
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# First the relative filename.
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printf '%s\t%s\n' "$file" $desc
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# Now from repo root.
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set -l fromroot (builtin realpath -- $file 2>/dev/null)
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and set fromroot (string replace -- "$root/" ":/" "$fromroot")
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and printf '%s\t%s\n' "$fromroot" $desc
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end
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end
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else
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# v1 format logic
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# We need to compute relative paths on our own, which is slow.
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# Pre-remove the root at least, so we have fewer components to deal with.
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set -l _pwd_list (string replace "$root/" "" -- $PWD | string split /)
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# Cache the previous relative path because these are sorted, so we can reuse it
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# often for files in the same directory.
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set -l previous
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set -l previousfile
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# Note that we can't use space as a delimiter between status and filename, because
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# the status can contain spaces - " M" is different from "M ".
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command git -c core.quotePath= status --porcelain -z $status_opt \
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| while read -lz line
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set -l desc
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# The entire line is the "from" from a rename.
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if set -q use_next[1]
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if contains -- $use_next $argv
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string replace -f -- "$PWD/" "" "$root/$line"
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or string replace -- "$root/" ":/" "$root/$line"
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end
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set -l var "$use_next"_desc
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set desc $$var
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set -e use_next[1]
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else
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set -e use_next[1]
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continue
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end
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end
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# The format is two characters for status, then a space and then
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# up to a NUL for the filename.
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#
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# Use IFS to handle newlines in filenames.
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set -l IFS
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set -l stat (string sub -l 2 -- $line)
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set -l file (string sub -s 4 -- $line)
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# Print files from the current $PWD as-is, prepend all others with ":/" (relative to toplevel in git-speak)
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# This is a bit simplistic but finding the lowest common directory
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# and then replacing everything else in $PWD with ".." is a bit annoying
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set file (string replace -f -- "$PWD/" "" "$root/$file"; or string replace -- "$root/" ":/" "$root/$file")
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set -e IFS
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# The basic status format is "XY", where X is "our" state (meaning the staging area),
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# and "Y" is "their" state (meaning the work tree).
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# A " " means it's unmodified.
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#
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# Be careful about the ordering here!
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#
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# HACK: To allow this to work both with and without '?' globs
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set -l dq '\\?\\?'
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if status test-feature qmark-noglob
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# ? is not a glob
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set dq '??'
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end
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switch "$stat"
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case DD AU UD UA DU AA UU
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# Unmerged
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# TODO: It might be useful to split this up.
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contains -- unmerged $argv
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and printf '%s\t%s\n' "$file" $unmerged_desc
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set -ql unmerged
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and set desc $unmerged_desc
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case 'R ' RM RD
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# Renamed/Copied
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# These have the "from" name as the next batch.
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@ -169,40 +289,64 @@ function __fish_git_files
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case 'A ' AM AD
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# Additions are only shown here if they are staged.
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# Otherwise it's an untracked file.
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contains -- added $argv
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or contains -- all-staged $argv
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and printf '%s\t%s\n' "$file" $added_desc
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set -ql added
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and set desc $added_desc
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case '*M'
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# Modified
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contains -- modified $argv
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and printf '%s\t%s\n' "$file" $modified_desc
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set -ql modified
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and set desc $modified_desc
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case 'M*'
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# If the character is first ("M "), then that means it's "our" change,
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# which means it is staged.
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# This is useless for many commands - e.g. `checkout` won't do anything with this.
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# So it needs to be requested explicitly.
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contains -- modified-staged $argv
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or contains -- all-staged $argv
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and printf '%s\t%s\n' "$file" $staged_modified_desc
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set -ql modified_staged
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and set desc $staged_modified_desc
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case '*D'
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contains -- deleted $argv
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and printf '%s\t%s\n' "$file" $deleted_desc
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set -ql deleted
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and set desc $deleted_desc
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case 'D*'
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# TODO: The docs are unclear on this.
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# There is both X unmodified and Y either M or D ("not updated")
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# and Y is D and X is unmodified or [MARC] ("deleted in work tree").
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# For our purposes, we assume this is a staged deletion.
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contains -- deleted-staged $argv
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or contains -- all-staged $argv
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and printf '%s\t%s\n' "$file" $staged_deleted_desc
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case "$dq" # a literal '??'
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set -ql deleted_staged
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and set desc $staged_deleted_desc
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case "$q$q"
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# Untracked
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contains -- untracked $argv
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and printf '%s\t%s\n' "$file" $untracked_desc
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set -ql untracked
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and set desc $untracked_desc
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case '!!'
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# Ignored
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contains -- ignored $argv
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and printf '%s\t%s\n' "$file" $ignored_desc
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set -ql ignored
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and set desc $ignored_desc
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end
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if set -q desc[1]
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# Again: "XY filename", so the filename starts on character 4.
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set -l relfile (string sub -s 4 -- $line)
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# The filename with ":/" prepended.
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set -l file (string replace -- "$root/" ":/" "$root/$relfile")
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# Computing relative path by hand.
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set -l abs (string split / -- $relfile)
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# If it's in the same directory, we just need to change the filename.
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if test "$abs[1..-2]" = "$previousfile[1..-2]"
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set previous[-1] $abs[-1]
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else
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set -l pwd_list $_pwd_list
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set previousfile $abs
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# Remove common prefix
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while test "$pwd_list[1]" = "$abs[1]"
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set -e pwd_list[1]
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set -e abs[1]
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end
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# Go a dir up for every entry left in pwd_list, then into $abs
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set previous (string replace -r '.*' '..' -- $pwd_list) $abs
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end
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set -a file (string join / -- $previous)
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printf '%s\n' $file\t$desc
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end
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end
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end
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end
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