diff options
Diffstat (limited to 'third_party/git/contrib/completion/git-prompt.sh')
| -rw-r--r-- | third_party/git/contrib/completion/git-prompt.sh | 564 |
1 files changed, 564 insertions, 0 deletions
diff --git a/third_party/git/contrib/completion/git-prompt.sh b/third_party/git/contrib/completion/git-prompt.sh new file mode 100644 index 000000000000..1d510cd47bef --- /dev/null +++ b/third_party/git/contrib/completion/git-prompt.sh @@ -0,0 +1,564 @@ +# bash/zsh git prompt support +# +# Copyright (C) 2006,2007 Shawn O. Pearce <spearce@spearce.org> +# Distributed under the GNU General Public License, version 2.0. +# +# This script allows you to see repository status in your prompt. +# +# To enable: +# +# 1) Copy this file to somewhere (e.g. ~/.git-prompt.sh). +# 2) Add the following line to your .bashrc/.zshrc: +# source ~/.git-prompt.sh +# 3a) Change your PS1 to call __git_ps1 as +# command-substitution: +# Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ ' +# ZSH: setopt PROMPT_SUBST ; PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ ' +# the optional argument will be used as format string. +# 3b) Alternatively, for a slightly faster prompt, __git_ps1 can +# be used for PROMPT_COMMAND in Bash or for precmd() in Zsh +# with two parameters, <pre> and <post>, which are strings +# you would put in $PS1 before and after the status string +# generated by the git-prompt machinery. e.g. +# Bash: PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "' +# will show username, at-sign, host, colon, cwd, then +# various status string, followed by dollar and SP, as +# your prompt. +# ZSH: precmd () { __git_ps1 "%n" ":%~$ " "|%s" } +# will show username, pipe, then various status string, +# followed by colon, cwd, dollar and SP, as your prompt. +# Optionally, you can supply a third argument with a printf +# format string to finetune the output of the branch status +# +# The repository status will be displayed only if you are currently in a +# git repository. The %s token is the placeholder for the shown status. +# +# The prompt status always includes the current branch name. +# +# In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value, +# unstaged (*) and staged (+) changes will be shown next to the branch +# name. You can configure this per-repository with the +# bash.showDirtyState variable, which defaults to true once +# GIT_PS1_SHOWDIRTYSTATE is enabled. +# +# You can also see if currently something is stashed, by setting +# GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed, +# then a '$' will be shown next to the branch name. +# +# If you would like to see if there're untracked files, then you can set +# GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked +# files, then a '%' will be shown next to the branch name. You can +# configure this per-repository with the bash.showUntrackedFiles +# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is +# enabled. +# +# If you would like to see the difference between HEAD and its upstream, +# set GIT_PS1_SHOWUPSTREAM="auto". A "<" indicates you are behind, ">" +# indicates you are ahead, "<>" indicates you have diverged and "=" +# indicates that there is no difference. You can further control +# behaviour by setting GIT_PS1_SHOWUPSTREAM to a space-separated list +# of values: +# +# verbose show number of commits ahead/behind (+/-) upstream +# name if verbose, then also show the upstream abbrev name +# legacy don't use the '--count' option available in recent +# versions of git-rev-list +# git always compare HEAD to @{upstream} +# svn always compare HEAD to your SVN upstream +# +# You can change the separator between the branch name and the above +# state symbols by setting GIT_PS1_STATESEPARATOR. The default separator +# is SP. +# +# By default, __git_ps1 will compare HEAD to your SVN upstream if it can +# find one, or @{upstream} otherwise. Once you have set +# GIT_PS1_SHOWUPSTREAM, you can override it on a per-repository basis by +# setting the bash.showUpstream config variable. +# +# If you would like to see more information about the identity of +# commits checked out as a detached HEAD, set GIT_PS1_DESCRIBE_STYLE +# to one of these values: +# +# contains relative to newer annotated tag (v1.6.3.2~35) +# branch relative to newer tag or branch (master~4) +# describe relative to older annotated tag (v1.6.3.1-13-gdd42c2f) +# tag relative to any older tag (v1.6.3.1-13-gdd42c2f) +# default exactly matching tag +# +# If you would like a colored hint about the current dirty state, set +# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on +# the colored output of "git status -sb" and are available only when +# using __git_ps1 for PROMPT_COMMAND or precmd. +# +# If you would like __git_ps1 to do nothing in the case when the current +# directory is set up to be ignored by git, then set +# GIT_PS1_HIDE_IF_PWD_IGNORED to a nonempty value. Override this on the +# repository level by setting bash.hideIfPwdIgnored to "false". + +# check whether printf supports -v +__git_printf_supports_v= +printf -v __git_printf_supports_v -- '%s' yes >/dev/null 2>&1 + +# stores the divergence from upstream in $p +# used by GIT_PS1_SHOWUPSTREAM +__git_ps1_show_upstream () +{ + local key value + local svn_remote svn_url_pattern count n + local upstream=git legacy="" verbose="" name="" + + svn_remote=() + # get some config options from git-config + local output="$(git config -z --get-regexp '^(svn-remote\..*\.url|bash\.showupstream)$' 2>/dev/null | tr '\0\n' '\n ')" + while read -r key value; do + case "$key" in + bash.showupstream) + GIT_PS1_SHOWUPSTREAM="$value" + if [[ -z "${GIT_PS1_SHOWUPSTREAM}" ]]; then + p="" + return + fi + ;; + svn-remote.*.url) + svn_remote[$((${#svn_remote[@]} + 1))]="$value" + svn_url_pattern="$svn_url_pattern\\|$value" + upstream=svn+git # default upstream is SVN if available, else git + ;; + esac + done <<< "$output" + + # parse configuration values + for option in ${GIT_PS1_SHOWUPSTREAM}; do + case "$option" in + git|svn) upstream="$option" ;; + verbose) verbose=1 ;; + legacy) legacy=1 ;; + name) name=1 ;; + esac + done + + # Find our upstream + case "$upstream" in + git) upstream="@{upstream}" ;; + svn*) + # get the upstream from the "git-svn-id: ..." in a commit message + # (git-svn uses essentially the same procedure internally) + local -a svn_upstream + svn_upstream=($(git log --first-parent -1 \ + --grep="^git-svn-id: \(${svn_url_pattern#??}\)" 2>/dev/null)) + if [[ 0 -ne ${#svn_upstream[@]} ]]; then + svn_upstream=${svn_upstream[${#svn_upstream[@]} - 2]} + svn_upstream=${svn_upstream%@*} + local n_stop="${#svn_remote[@]}" + for ((n=1; n <= n_stop; n++)); do + svn_upstream=${svn_upstream#${svn_remote[$n]}} + done + + if [[ -z "$svn_upstream" ]]; then + # default branch name for checkouts with no layout: + upstream=${GIT_SVN_ID:-git-svn} + else + upstream=${svn_upstream#/} + fi + elif [[ "svn+git" = "$upstream" ]]; then + upstream="@{upstream}" + fi + ;; + esac + + # Find how many commits we are ahead/behind our upstream + if [[ -z "$legacy" ]]; then + count="$(git rev-list --count --left-right \ + "$upstream"...HEAD 2>/dev/null)" + else + # produce equivalent output to --count for older versions of git + local commits + if commits="$(git rev-list --left-right "$upstream"...HEAD 2>/dev/null)" + then + local commit behind=0 ahead=0 + for commit in $commits + do + case "$commit" in + "<"*) ((behind++)) ;; + *) ((ahead++)) ;; + esac + done + count="$behind $ahead" + else + count="" + fi + fi + + # calculate the result + if [[ -z "$verbose" ]]; then + case "$count" in + "") # no upstream + p="" ;; + "0 0") # equal to upstream + p="=" ;; + "0 "*) # ahead of upstream + p=">" ;; + *" 0") # behind upstream + p="<" ;; + *) # diverged from upstream + p="<>" ;; + esac + else + case "$count" in + "") # no upstream + p="" ;; + "0 0") # equal to upstream + p=" u=" ;; + "0 "*) # ahead of upstream + p=" u+${count#0 }" ;; + *" 0") # behind upstream + p=" u-${count% 0}" ;; + *) # diverged from upstream + p=" u+${count#* }-${count% *}" ;; + esac + if [[ -n "$count" && -n "$name" ]]; then + __git_ps1_upstream_name=$(git rev-parse \ + --abbrev-ref "$upstream" 2>/dev/null) + if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then + p="$p \${__git_ps1_upstream_name}" + else + p="$p ${__git_ps1_upstream_name}" + # not needed anymore; keep user's + # environment clean + unset __git_ps1_upstream_name + fi + fi + fi + +} + +# Helper function that is meant to be called from __git_ps1. It +# injects color codes into the appropriate gitstring variables used +# to build a gitstring. +__git_ps1_colorize_gitstring () +{ + if [[ -n ${ZSH_VERSION-} ]]; then + local c_red='%F{red}' + local c_green='%F{green}' + local c_lblue='%F{blue}' + local c_clear='%f' + else + # Using \[ and \] around colors is necessary to prevent + # issues with command line editing/browsing/completion! + local c_red='\[\e[31m\]' + local c_green='\[\e[32m\]' + local c_lblue='\[\e[1;34m\]' + local c_clear='\[\e[0m\]' + fi + local bad_color=$c_red + local ok_color=$c_green + local flags_color="$c_lblue" + + local branch_color="" + if [ $detached = no ]; then + branch_color="$ok_color" + else + branch_color="$bad_color" + fi + c="$branch_color$c" + + z="$c_clear$z" + if [ "$w" = "*" ]; then + w="$bad_color$w" + fi + if [ -n "$i" ]; then + i="$ok_color$i" + fi + if [ -n "$s" ]; then + s="$flags_color$s" + fi + if [ -n "$u" ]; then + u="$bad_color$u" + fi + r="$c_clear$r" +} + +# Helper function to read the first line of a file into a variable. +# __git_eread requires 2 arguments, the file path and the name of the +# variable, in that order. +__git_eread () +{ + test -r "$1" && IFS=$'\r\n' read "$2" <"$1" +} + +# see if a cherry-pick or revert is in progress, if the user has committed a +# conflict resolution with 'git commit' in the middle of a sequence of picks or +# reverts then CHERRY_PICK_HEAD/REVERT_HEAD will not exist so we have to read +# the todo file. +__git_sequencer_status () +{ + local todo + if test -f "$g/CHERRY_PICK_HEAD" + then + r="|CHERRY-PICKING" + return 0; + elif test -f "$g/REVERT_HEAD" + then + r="|REVERTING" + return 0; + elif __git_eread "$g/sequencer/todo" todo + then + case "$todo" in + p[\ \ ]|pick[\ \ ]*) + r="|CHERRY-PICKING" + return 0 + ;; + revert[\ \ ]*) + r="|REVERTING" + return 0 + ;; + esac + fi + return 1 +} + +# __git_ps1 accepts 0 or 1 arguments (i.e., format string) +# when called from PS1 using command substitution +# in this mode it prints text to add to bash PS1 prompt (includes branch name) +# +# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc) +# in that case it _sets_ PS1. The arguments are parts of a PS1 string. +# when two arguments are given, the first is prepended and the second appended +# to the state string when assigned to PS1. +# The optional third parameter will be used as printf format string to further +# customize the output of the git-status string. +# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true +__git_ps1 () +{ + # preserve exit status + local exit=$? + local pcmode=no + local detached=no + local ps1pc_start='\u@\h:\w ' + local ps1pc_end='\$ ' + local printf_format=' (%s)' + + case "$#" in + 2|3) pcmode=yes + ps1pc_start="$1" + ps1pc_end="$2" + printf_format="${3:-$printf_format}" + # set PS1 to a plain prompt so that we can + # simply return early if the prompt should not + # be decorated + PS1="$ps1pc_start$ps1pc_end" + ;; + 0|1) printf_format="${1:-$printf_format}" + ;; + *) return $exit + ;; + esac + + # ps1_expanded: This variable is set to 'yes' if the shell + # subjects the value of PS1 to parameter expansion: + # + # * bash does unless the promptvars option is disabled + # * zsh does not unless the PROMPT_SUBST option is set + # * POSIX shells always do + # + # If the shell would expand the contents of PS1 when drawing + # the prompt, a raw ref name must not be included in PS1. + # This protects the user from arbitrary code execution via + # specially crafted ref names. For example, a ref named + # 'refs/heads/$(IFS=_;cmd=sudo_rm_-rf_/;$cmd)' might cause the + # shell to execute 'sudo rm -rf /' when the prompt is drawn. + # + # Instead, the ref name should be placed in a separate global + # variable (in the __git_ps1_* namespace to avoid colliding + # with the user's environment) and that variable should be + # referenced from PS1. For example: + # + # __git_ps1_foo=$(do_something_to_get_ref_name) + # PS1="...stuff...\${__git_ps1_foo}...stuff..." + # + # If the shell does not expand the contents of PS1, the raw + # ref name must be included in PS1. + # + # The value of this variable is only relevant when in pcmode. + # + # Assume that the shell follows the POSIX specification and + # expands PS1 unless determined otherwise. (This is more + # likely to be correct if the user has a non-bash, non-zsh + # shell and safer than the alternative if the assumption is + # incorrect.) + # + local ps1_expanded=yes + [ -z "${ZSH_VERSION-}" ] || [[ -o PROMPT_SUBST ]] || ps1_expanded=no + [ -z "${BASH_VERSION-}" ] || shopt -q promptvars || ps1_expanded=no + + local repo_info rev_parse_exit_code + repo_info="$(git rev-parse --git-dir --is-inside-git-dir \ + --is-bare-repository --is-inside-work-tree \ + --short HEAD 2>/dev/null)" + rev_parse_exit_code="$?" + + if [ -z "$repo_info" ]; then + return $exit + fi + + local short_sha="" + if [ "$rev_parse_exit_code" = "0" ]; then + short_sha="${repo_info##*$'\n'}" + repo_info="${repo_info%$'\n'*}" + fi + local inside_worktree="${repo_info##*$'\n'}" + repo_info="${repo_info%$'\n'*}" + local bare_repo="${repo_info##*$'\n'}" + repo_info="${repo_info%$'\n'*}" + local inside_gitdir="${repo_info##*$'\n'}" + local g="${repo_info%$'\n'*}" + + if [ "true" = "$inside_worktree" ] && + [ -n "${GIT_PS1_HIDE_IF_PWD_IGNORED-}" ] && + [ "$(git config --bool bash.hideIfPwdIgnored)" != "false" ] && + git check-ignore -q . + then + return $exit + fi + + local r="" + local b="" + local step="" + local total="" + if [ -d "$g/rebase-merge" ]; then + __git_eread "$g/rebase-merge/head-name" b + __git_eread "$g/rebase-merge/msgnum" step + __git_eread "$g/rebase-merge/end" total + if [ -f "$g/rebase-merge/interactive" ]; then + r="|REBASE-i" + else + r="|REBASE-m" + fi + else + if [ -d "$g/rebase-apply" ]; then + __git_eread "$g/rebase-apply/next" step + __git_eread "$g/rebase-apply/last" total + if [ -f "$g/rebase-apply/rebasing" ]; then + __git_eread "$g/rebase-apply/head-name" b + r="|REBASE" + elif [ -f "$g/rebase-apply/applying" ]; then + r="|AM" + else + r="|AM/REBASE" + fi + elif [ -f "$g/MERGE_HEAD" ]; then + r="|MERGING" + elif __git_sequencer_status; then + : + elif [ -f "$g/BISECT_LOG" ]; then + r="|BISECTING" + fi + + if [ -n "$b" ]; then + : + elif [ -h "$g/HEAD" ]; then + # symlink symbolic ref + b="$(git symbolic-ref HEAD 2>/dev/null)" + else + local head="" + if ! __git_eread "$g/HEAD" head; then + return $exit + fi + # is it a symbolic ref? + b="${head#ref: }" + if [ "$head" = "$b" ]; then + detached=yes + b="$( + case "${GIT_PS1_DESCRIBE_STYLE-}" in + (contains) + git describe --contains HEAD ;; + (branch) + git describe --contains --all HEAD ;; + (tag) + git describe --tags HEAD ;; + (describe) + git describe HEAD ;; + (* | default) + git describe --tags --exact-match HEAD ;; + esac 2>/dev/null)" || + + b="$short_sha..." + b="($b)" + fi + fi + fi + + if [ -n "$step" ] && [ -n "$total" ]; then + r="$r $step/$total" + fi + + local w="" + local i="" + local s="" + local u="" + local c="" + local p="" + + if [ "true" = "$inside_gitdir" ]; then + if [ "true" = "$bare_repo" ]; then + c="BARE:" + else + b="GIT_DIR!" + fi + elif [ "true" = "$inside_worktree" ]; then + if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] && + [ "$(git config --bool bash.showDirtyState)" != "false" ] + then + git diff --no-ext-diff --quiet || w="*" + git diff --no-ext-diff --cached --quiet || i="+" + if [ -z "$short_sha" ] && [ -z "$i" ]; then + i="#" + fi + fi + if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ] && + git rev-parse --verify --quiet refs/stash >/dev/null + then + s="$" + fi + + if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] && + [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] && + git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*' >/dev/null 2>/dev/null + then + u="%${ZSH_VERSION+%}" + fi + + if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then + __git_ps1_show_upstream + fi + fi + + local z="${GIT_PS1_STATESEPARATOR-" "}" + + # NO color option unless in PROMPT_COMMAND mode + if [ $pcmode = yes ] && [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then + __git_ps1_colorize_gitstring + fi + + b=${b##refs/heads/} + if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then + __git_ps1_branch_name=$b + b="\${__git_ps1_branch_name}" + fi + + local f="$w$i$s$u" + local gitstring="$c$b${f:+$z$f}$r$p" + + if [ $pcmode = yes ]; then + if [ "${__git_printf_supports_v-}" != yes ]; then + gitstring=$(printf -- "$printf_format" "$gitstring") + else + printf -v gitstring -- "$printf_format" "$gitstring" + fi + PS1="$ps1pc_start$gitstring$ps1pc_end" + else + printf -- "$printf_format" "$gitstring" + fi + + return $exit +} |