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# 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 the current branch 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$(__git_ps1 " (%s)")]\$ ' # ZSH: PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ ' # the optional argument will be used as format string. # 3b) Alternatively, if you are using bash, __git_ps1 can be # used for PROMPT_COMMAND with two parameters, <pre> and # <post>, which are strings you would put in $PS1 before # and after the status string generated by the git-prompt # machinery. e.g. # PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "' # will show username, at-sign, host, colon, cwd, then # various status string, followed by dollar and SP, as # your prompt. # Optionally, you can supply a third argument with a printf # format string to finetune the output of the branch status # # The argument to __git_ps1 will be displayed only if you are currently # in a git repository. The %s token will be the name of the current # branch. # # In addition, if you set GIT_PS1_SHOWDIRTYSTATE to a nonempty value, # unstaged (*) and staged (+) changes will be shown next to the branch # name. You can configure this per-repository with the # bash.showDirtyState variable, which defaults to true once # GIT_PS1_SHOWDIRTYSTATE is enabled. # # You can also see if currently something is stashed, by setting # GIT_PS1_SHOWSTASHSTATE to a nonempty value. If something is stashed, # then a '$' 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 # 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. # # 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) # 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". # __gitdir accepts 0 or 1 arguments (i.e., location) # returns location of .git repo __gitdir () { # Note: this function is duplicated in git-completion.bash # When updating it, make sure you update the other one to match. if [ -z "${1-}" ]; then if [ -n "${__git_dir-}" ]; then echo "$__git_dir" elif [ -n "${GIT_DIR-}" ]; then test -d "${GIT_DIR-}" || return 1 echo "$GIT_DIR" elif [ -d .git ]; then echo .git else git rev-parse --git-dir 2>/dev/null fi elif [ -d "$1/.git" ]; then echo "$1/.git" else echo "$1" fi } # stores the divergence from upstream in $p # used by GIT_PS1_SHOWUPSTREAM __git_ps1_show_upstream () { local key value local svn_remote svn_url_pattern count n local upstream=git legacy="" verbose="" svn_remote=() # get some config options from git-config local output="$(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)) ]="$value" svn_url_pattern+="\\|$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="$option" ;; verbose) verbose=1 ;; legacy) legacy=1 ;; esac done # Find our upstream case "$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 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 fi } # __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 () { 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:-$printf_format}" ;; 0|1) printf_format="${1:-$printf_format}" ;; *) return ;; esac local g="$(__gitdir)" if [ -z "$g" ]; then if [ $pcmode = yes ]; then #In PC mode PS1 always needs to be set PS1="$ps1pc_start$ps1pc_end" fi else local r="" local b="" local step="" local total="" if [ -d "$g/rebase-merge" ]; then b="$(cat "$g/rebase-merge/head-name")" step=$(cat "$g/rebase-merge/msgnum") total=$(cat "$g/rebase-merge/end") if [ -f "$g/rebase-merge/interactive" ]; then r="|REBASE-i" else r="|REBASE-m" fi else if [ -d "$g/rebase-apply" ]; then step=$(cat "$g/rebase-apply/next") total=$(cat "$g/rebase-apply/last") if [ -f "$g/rebase-apply/rebasing" ]; then r="|REBASE" elif [ -f "$g/rebase-apply/applying" ]; then r="|AM" else r="|AM/REBASE" fi elif [ -f "$g/MERGE_HEAD" ]; then r="|MERGING" elif [ -f "$g/CHERRY_PICK_HEAD" ]; then r="|CHERRY-PICKING" elif [ -f "$g/REVERT_HEAD" ]; then r="|REVERTING" elif [ -f "$g/BISECT_LOG" ]; then r="|BISECTING" fi b="$(git symbolic-ref HEAD 2>/dev/null)" || { detached=yes b="$( case "${GIT_PS1_DESCRIBE_STYLE-}" in (contains) git describe --contains HEAD ;; (branch) git describe --contains --all HEAD ;; (describe) git describe HEAD ;; (* | default) git describe --tags --exact-match HEAD ;; esac 2>/dev/null)" || b="$(cut -c1-7 "$g/HEAD" 2>/dev/null)..." || b="unknown" b="($b)" } 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" = "$(git rev-parse --is-inside-git-dir 2>/dev/null)" ]; then if [ "true" = "$(git rev-parse --is-bare-repository 2>/dev/null)" ]; then c="BARE:" else b="GIT_DIR!" fi elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] && [ "$(git config --bool bash.showDirtyState)" != "false" ] then git diff --no-ext-diff --quiet --exit-code || w="*" if git rev-parse --quiet --verify HEAD >/dev/null; then git diff-index --cached --quiet HEAD -- || i="+" else i="#" fi fi if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$" fi if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] && [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] && [ -n "$(git ls-files --others --exclude-standard)" ] then u="%${ZSH_VERSION+%}" fi if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then __git_ps1_show_upstream fi fi local f="$w$i$s$u" b=${b##refs/heads/} if [ $pcmode = yes ]; then local gitstring= __git_ps1_branch_name=$b b="\${__git_ps1_branch_name}" if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then local c_red='\e[31m' local c_green='\e[32m' local c_lblue='\e[1;34m' local c_clear='\e[0m' local bad_color=$c_red local ok_color=$c_green local branch_color="$c_clear" local flags_color="$c_lblue" local branchstring="$c$b" if [ $detached = no ]; then branch_color="$ok_color" else branch_color="$bad_color" fi # Setting gitstring directly with \[ and \] around colors # is necessary to prevent wrapping issues! gitstring="\[$branch_color\]$branchstring\[$c_clear\]" if [ -n "$w$i$s$u$r$p" ]; then gitstring="$gitstring " fi if [ "$w" = "*" ]; then gitstring="$gitstring\[$bad_color\]$w" fi if [ -n "$i" ]; then gitstring="$gitstring\[$ok_color\]$i" fi if [ -n "$s" ]; then gitstring="$gitstring\[$flags_color\]$s" fi if [ -n "$u" ]; then gitstring="$gitstring\[$bad_color\]$u" fi gitstring="$gitstring\[$c_clear\]$r$p" else gitstring="$c$b${f:+ $f}$r$p" fi gitstring=$(printf -- "$printf_format" "$gitstring") PS1="$ps1pc_start$gitstring$ps1pc_end" else # NO color option unless in PROMPT_COMMAND mode printf -- "$printf_format" "$c$b${f:+ $f}$r$p" fi fi }
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