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prezto/modules/git/functions/git-info

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#
# Displays Git repository information.
#
# Authors:
# Sorin Ionescu <sorin.ionescu@gmail.com>
#
# Usage:
# Define the following styles in a prompt theme setup function.
#
# # %s - Special action name (am, merge, rebase).
# zstyle ':omz:module:git' action 'action:%s'
#
# # %a - Indicator to notify of added files.
# zstyle ':omz:module:git' added 'added:%a'
#
# # %A - Indicator to notify of ahead branch.
# zstyle ':omz:module:git' ahead 'ahead:%A'
#
# # %B - Indicator to notify of behind branch.
# zstyle ':omz:module:git' behind 'behind:%B'
#
# # %b - Branch name.
# zstyle ':omz:module:git' branch 'branch:%b'
#
# # %C - Indicator to notify of a clean working directory.
# zstyle ':omz:module:git' clean 'clean'
#
# # %c - SHA-1 hash.
# zstyle ':omz:module:git' commit 'commit:%c'
#
# # %d - Indicator to notify of deleted files.
# zstyle ':omz:module:git' deleted 'deleted:%d'
#
# # %D - Indicator to notify of dirty files.
# zstyle ':omz:module:git' dirty 'dirty:%D'
#
# # %m - Indicator to notify of modified files.
# zstyle ':omz:module:git' modified 'modified:%m'
#
# # %p - HEAD position in relation to the nearest branch, remote, tag.
# zstyle ':omz:module:git:prompt' position 'position:%p'
#
# # %R - Remote name.
# zstyle ':omz:moduleit' remote 'remote:%R'
#
# # %r - Indicator to notify of renamed files.
# zstyle ':omz:module:git' renamed 'renamed:%r'
#
# # %S - Indicator to notify of stashed files.
# zstyle ':omz:module:git' stashed 'stashed:%S'
#
# # %U - Indicator to notify of unmerged files.
# zstyle ':omz:module:git' unmerged 'unmerged:%U'
#
# # %u - Indicator to notify of untracked files.
# zstyle ':omz:module:git' untracked 'untracked:%u'
#
# # Ignore submodule when it is 'dirty', 'untracked', 'all', or 'none'.
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# zstyle ':omz:module:git:ignore' submodule ''
#
# # Prompts.
# zstyle ':omz:module:git' info \
# 'prompt' ' git:(%b%C%D)' \
# 'rprompt' ''
#
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# Load dependencies.
omodload 'trap'
# Gets the Git special action (am, merge, rebase, etc.).
# Borrowed from vcs_info and edited.
function _git-action {
local action=''
local action_dir
local git_dir="$(git-dir)"
for action_dir in \
"${git_dir}/rebase-apply" \
"${git_dir}/rebase" \
"${git_dir}/../.dotest"; do
if [[ -d "$action_dir" ]] ; then
if [[ -f "${action_dir}/rebasing" ]] ; then
action='rebase'
elif [[ -f "${action_dir}/applying" ]] ; then
action='am'
else
action='am/rebase'
fi
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print "$action"
return 0
fi
done
for action_dir in \
"${git_dir}/rebase-merge/interactive" \
"${git_dir}/.dotest-merge/interactive"; do
if [[ -f "$action_dir" ]]; then
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print 'rebase-i'
return 0
fi
done
for action_dir in \
"${git_dir}/rebase-merge" \
"${git_dir}/.dotest-merge"; do
if [[ -d "$action_dir" ]]; then
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print 'rebase-m'
return 0
fi
done
if [[ -f "${git_dir}/MERGE_HEAD" ]]; then
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print 'merge'
return 0
fi
if [[ -f "${git_dir}/CHERRY_PICK_HEAD" ]]; then
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print 'cherry-pick'
return 0
fi
if [[ -f "${git_dir}/BISECT_LOG" ]]; then
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print 'bisect'
return 0
fi
return 1
}
# Turns off git-info for the current repository.
function _git-info-abort {
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if ! is-true "$_git_info_executing"; then
return 1
fi
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cat >&2 <<EOF
Gathering status for certain repositories is time intensive.
By pressing CTRL + C, you have turned off prompt Git status
for this repository.
To revert, execute:
git-info on
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EOF
unset _git_info_executing
git config --bool prompt.showinfo false
git-info
return 0
}
add-zsh-trap INT _git-info-abort
# Gets the Git status information.
function git-info {
# Extended globbing is needed to parse repository status.
setopt LOCAL_OPTIONS
setopt EXTENDED_GLOB
local action
local action_format
local action_formatted
local added=0
local added_format
local added_formatted
local ahead
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local ahead_and_behind
local ahead_and_behind_cmd
local ahead_format
local ahead_formatted
local ahead_or_behind
local behind
local behind_format
local behind_formatted
local branch
local branch_format
local branch_formatted
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local branch_info
local clean
local clean_formatted
local commit
local commit_format
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local commit_formatted
local deleted=0
local deleted_format
local deleted_formatted
local dirty=0
local dirty_format
local dirty_formatted
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local ignore_submodule
local -A info_formats
local info_format
local line_number=0
local modified=0
local modified_format
local modified_formatted
local position
local position_format
local position_formatted
local remote
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local remote_cmd
local remote_format
local remote_formatted
local renamed=0
local renamed_format
local renamed_formatted
local stashed=0
local stashed_format
local stashed_formatted
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local status_cmd
local unmerged=0
local unmerged_format
local unmerged_formatted
local untracked=0
local untracked_format
local untracked_formatted
# Clean up previous $git_info.
unset git_info
typeset -gA git_info
# Return if not inside a Git repository work tree.
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if ! is-true "$(git rev-parse --is-inside-work-tree 2> /dev/null)"; then
return 1
fi
if (( $# > 0 )); then
if [[ "$1" == [Oo][Nn] ]]; then
git config --bool prompt.showinfo true
elif [[ "$1" == [Oo][Ff][Ff] ]]; then
git config --bool prompt.showinfo false
else
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print "usage: $0 [ on | off ]" >&2
fi
return 0
fi
# Return if git-info is disabled.
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if ! is-true "${$(git config --bool prompt.showinfo):-true}"; then
return 1
fi
# Used to abort and turn git-info off on SIGINT.
_git_info_executing=true
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# Use porcelain status for easy parsing.
status_cmd='git status --porcelain'
# Gets the remote name.
remote_cmd='git rev-parse --symbolic-full-name --verify HEAD@{upstream}'
# Gets the commit difference counts between local and remote.
ahead_and_behind_cmd='git rev-list --count --left-right HEAD...@{upstream}'
# Ignore submodule status.
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zstyle -s ':omz:module:git:ignore' submodule 'ignore_submodule'
if [[ -n "$ignore_submodule" ]]; then
status_cmd+=" --ignore-submodules=${ignore_submodule}"
fi
# Format commit.
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commit="$(git rev-parse HEAD 2> /dev/null)"
if [[ -n "$commit" ]]; then
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zstyle -s ':omz:module:git' commit 'commit_format'
zformat -f commit_formatted "$commit_format" "c:$commit"
fi
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# Format stashed.
if [[ -f "$(git-dir)/refs/stash" ]]; then
stashed="$(git stash list 2> /dev/null | wc -l | awk '{print $1}')"
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zstyle -s ':omz:module:git' stashed 'stashed_format'
zformat -f stashed_formatted "$stashed_format" "S:$stashed"
fi
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# Format action.
action="$(_git-action)"
if [[ -n "$action" ]]; then
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zstyle -s ':omz:module:git' action 'action_format'
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zformat -f action_formatted "$action_format" "s:$action"
fi
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# Get current status.
while IFS=$'\n' read line; do
# Count added, deleted, modified, renamed, unmerged, untracked, dirty.
# T (type change) is undocumented, see http://git.io/FnpMGw.
# For a table of scenarii, see http://i.imgur.com/2YLu1.png.
[[ "$line" == ([ACDMT][\ MT]|[ACMT]D)\ * ]] && (( added++ ))
[[ "$line" == [\ ACMRT]D\ * ]] && (( deleted++ ))
[[ "$line" == ?[MT]\ * ]] && (( modified++ ))
[[ "$line" == R?\ * ]] && (( renamed++ ))
[[ "$line" == (AA|DD|U?|?U)\ * ]] && (( unmerged++ ))
[[ "$line" == \?\?\ * ]] && (( untracked++ ))
(( dirty++ ))
done < <(${(z)status_cmd} 2> /dev/null)
# Format branch.
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branch="${$(git symbolic-ref -q HEAD)##refs/heads/}"
if [[ -n "$branch" ]]; then
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zstyle -s ':omz:module:git' branch 'branch_format'
zformat -f branch_formatted "$branch_format" "b:$branch"
# Format remote.
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remote="${$(${(z)remote_cmd} 2> /dev/null)##refs/remotes/}"
if [[ -n "$remote" ]]; then
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zstyle -s ':omz:module:git' remote 'remote_format'
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zformat -f remote_formatted "$remote_format" "R:$remote"
# Get ahead and behind counts.
ahead_and_behind="$(${(z)ahead_and_behind_cmd} 2> /dev/null)"
# Format ahead.
ahead="$ahead_and_behind[(w)1]"
if (( $ahead > 0 )); then
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zstyle -s ':omz:module:git' ahead 'ahead_format'
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zformat -f ahead_formatted "$ahead_format" "A:$ahead"
fi
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# Format behind.
behind="$ahead_and_behind[(w)2]"
if (( $behind > 0 )); then
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zstyle -s ':omz:module:git' behind 'behind_format'
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zformat -f behind_formatted "$behind_format" "B:$behind"
fi
fi
else
# Format position.
position="$(git describe --contains --all HEAD 2> /dev/null)"
if [[ -n "$position" ]]; then
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zstyle -s ':omz:module:git:prompt' position 'position_format'
zformat -f position_formatted "$position_format" "p:$position"
fi
fi
# Format added.
if (( $added > 0 )); then
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zstyle -s ':omz:module:git' added 'added_format'
zformat -f added_formatted "$added_format" "a:$added_format"
fi
# Format deleted.
if (( $deleted > 0 )); then
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zstyle -s ':omz:module:git' deleted 'deleted_format'
zformat -f deleted_formatted "$deleted_format" "d:$deleted_format"
fi
# Format modified.
if (( $modified > 0 )); then
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zstyle -s ':omz:module:git' modified 'modified_format'
zformat -f modified_formatted "$modified_format" "m:$modified"
fi
# Format renamed.
if (( $renamed > 0 )); then
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zstyle -s ':omz:module:git' renamed 'renamed_format'
zformat -f renamed_formatted "$renamed_format" "r:$renamed"
fi
# Format unmerged.
if (( $unmerged > 0 )); then
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zstyle -s ':omz:module:git' unmerged 'unmerged_format'
zformat -f unmerged_formatted "$unmerged_format" "U:$unmerged"
fi
# Format untracked.
if (( $untracked > 0 )); then
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zstyle -s ':omz:module:git' untracked 'untracked_format'
zformat -f untracked_formatted "$untracked_format" "u:$untracked"
fi
# Format dirty and clean.
if (( $dirty > 0 )); then
zstyle -s ':omz:module:git' dirty 'dirty_format'
zformat -f dirty_formatted "$dirty_format" "D:$dirty"
else
zstyle -s ':omz:module:git' clean 'clean_formatted'
fi
# Format info.
zstyle -a ':omz:module:git' info 'info_formats'
for info_format in ${(k)info_formats}; do
zformat -f REPLY "$info_formats[$info_format]" \
"A:$ahead_formatted" \
"B:$behind_formatted" \
"D:$dirty_formatted" \
"R:$remote_formatted" \
"S:$stashed_formatted" \
"U:$unmerged_formatted" \
"a:$added_formatted" \
"b:$branch_formatted" \
"C:$clean_formatted" \
"c:$commit_formatted" \
"d:$deleted_formatted" \
"m:$modified_formatted" \
"p:$position_formatted" \
"r:$renamed_formatted" \
"s:$action_formatted" \
"u:$untracked_formatted"
git_info[$info_format]="$REPLY"
done
unset REPLY
unset _git_info_executing
return 0
}
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git-info "$@"