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git-prompt.sh
# 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 # # 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. # # You can change the separator between the branch name and the above # state symbols by setting GIT_PS1_STATESEPARATOR. The default separator # is SP. # # When there is an in-progress operation such as a merge, rebase, # revert, cherry-pick, or bisect, the prompt will include information # related to the operation, often in the form "|<OPERATION-NAME>". # # When the repository has a sparse-checkout, a notification of the form # "|SPARSE" will be included in the prompt. This can be shortened to a # single '?' character by setting GIT_PS1_COMPRESSSPARSESTATE, or omitted # by setting GIT_PS1_OMITSPARSESTATE. # # If you would like to see a notification on the prompt when there are # unresolved conflicts, set GIT_PS1_SHOWCONFLICTSTATE to "yes". The # prompt will include "|CONFLICT". # # 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". # # 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 $p # used by GIT_PS1_SHOWUPSTREAM __git_ps1_show_upstream () { local key value local svn_remote svn_url_pattern count n local upstream_type=git legacy="" verbose="" name="" svn_remote=() # get some config options from git-config local output="$(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\\|$value" upstream_type=svn+git # default upstream type is SVN if available, else git ;; esac done <<< "$output" # parse configuration values local option for option in ${GIT_PS1_SHOWUPSTREAM}; do case "$option" in git|svn) upstream_type="$option" ;; verbose) verbose=1 ;; legacy) legacy=1 ;; name) name=1 ;; esac done # Find our upstream type case "$upstream_type" in git) upstream_type="@{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 "$svn_upstream" ]]; then # default branch name for checkouts with no layout: upstream_type=${GIT_SVN_ID:-git-svn} else upstream_type=${svn_upstream#/} fi elif [[ "svn+git" = "$upstream_type" ]]; then upstream_type="@{upstream}" fi ;; esac # Find how many commits we are ahead/behind our upstream if [[ -z "$legacy" ]]; then count="$(git rev-list --count --left-right \ "$upstream_type"...HEAD 2>/dev/null)" else # produce equivalent output to --count for older versions of git local commits if commits="$(git rev-list --left-right "$upstream_type"...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 "$count" in "") # no upstream p="" ;; "0 0") # equal to upstream p="=" ;; "0 "*) # ahead of upstream p=">" ;; *" 0") # behind upstream p="<" ;; *) # diverged from upstream p="<>" ;; esac else # verbose, set upstream instead of p case "$count" in "") # no upstream upstream="" ;; "0 0") # equal to upstream upstream="|u=" ;; "0 "*) # ahead of upstream upstream="|u+${count#0 }" ;; *" 0") # behind upstream upstream="|u-${count% 0}" ;; *) # diverged from upstream upstream="|u+${count#* }-${count% *}" ;; esac if [[ -n "$count" && -n "$name" ]]; then __git_ps1_upstream_name=$(git rev-parse \ --abbrev-ref "$upstream_type" 2>/dev/null) if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then upstream="$upstream \${__git_ps1_upstream_name}" else upstream="$upstream ${__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. Colored variables are responsible for clearing # their own color. __git_ps1_colorize_gitstring () { if [[ -n ${ZSH_VERSION-} ]]; then local c_red='%F{red}' local c_green='%F{green}' local c_lblue='%F{blue}' local c_clear='%f' else # Using \001 and \002 around colors is necessary to prevent # issues with command line editing/browsing/completion! local c_red=$'\001\e[31m\002' local c_green=$'\001\e[32m\002' local c_lblue=$'\001\e[1;34m\002' local c_clear=$'\001\e[0m\002' fi local bad_color=$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="$bad_color" fi if [ -n "$c" ]; then c="$branch_color$c$c_clear" fi b="$branch_color$b$c_clear" if [ -n "$w" ]; then w="$bad_color$w$c_clear" fi if [ -n "$i" ]; then i="$ok_color$i$c_clear" fi if [ -n "$s" ]; then s="$flags_color$s$c_clear" fi if [ -n "$u" ]; then u="$bad_color$u$c_clear" fi } # 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 -r "$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 $exit fi local sparse="" if [ -z "${GIT_PS1_COMPRESSSPARSESTATE-}" ] && [ -z "${GIT_PS1_OMITSPARSESTATE-}" ] && [ "$(git config --bool core.sparseCheckout)" = "true" ]; then sparse="|SPARSE" 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 r="|REBASE" 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 conflict="" # state indicator for unresolved conflicts if [[ "${GIT_PS1_SHOWCONFLICTSTATE}" == "yes" ]] && [[ $(git ls-files --unmerged 2>/dev/null) ]]; then conflict="|CONFLICT" fi local w="" local i="" local s="" local u="" local h="" local c="" local p="" # short version of upstream state indicator local upstream="" # verbose version of upstream state indicator if [ "true" = "$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_COMPRESSSPARSESTATE-}" ] && [ "$(git config --bool core.sparseCheckout)" = "true" ]; then h="?" fi if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then __git_ps1_show_upstream fi fi local z="${GIT_PS1_STATESEPARATOR-" "}" b=${b##refs/heads/} if [ $pcmode = yes ] && [ $ps1_expanded = yes ]; then __git_ps1_branch_name=$b b="\${__git_ps1_branch_name}" fi if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then __git_ps1_colorize_gitstring fi local f="$h$w$i$s$u$p" local gitstring="$c$b${f:+$z$f}${sparse}$r${upstream}${conflict}" 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 }
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