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如何将彩色的 git 分支添加到我的 bash 提示符中？

tag-icon • tag-icon command-line bash git prompt
如何将彩色的 git 分支添加到我的 bash 提示符中？

我缩短了我的 bash 提示符（使用第 120 行的代码我的 .bashrc)：

PS1='\u:\W\$ '

现在我想将彩色的 git 分支添加到缩短的提示中，这样当分支有未提交的更改时，它会显示为红色，如果工作目录是干净的（没有什么可提交的），那么分支就会显示为绿色。

谢谢你！

答案1

srguiwiz 的 Github Gist显示基于分支状态的颜色提示：

# http://henrik.nyh.se/2008/12/git-dirty-prompt
# http://www.simplisticcomplexity.com/2008/03/13/show-your-git-branch-name-in-your-prompt/
#   username@Machine ~/dev/dir [master]$   # clean working directory green
#   username@Machine ~/dev/dir [master*]$  # dirty working directory red*
#
function git_branch {
  git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'
}
# http://unix.stackexchange.com/questions/88307/escape-sequences-with-echo-e-in-different-shells
function markup_git_branch {
  if [[ "x$1" = "x" ]]; then
    echo -e "[$1]"
  else
    if [[ $(git status 2> /dev/null | tail -n1) = "nothing to commit, working directory clean" ]]; then
      echo -e '\033[1;32m['"$1"']\033[0;0m'
    else
      echo -e '\033[1;31m['"$1"'*]\033[0;0m'
    fi
  fi
}
export PS1='\u@\h \[\033[0;34m\]\w\[\033[0m\] $(markup_git_branch $(git_branch))$ '

$(markup_git_branch $(git_branch))您只需要在提示中使用，无论您想在哪里显示提交状态和分支。

此处对原始代码进行了细微更改：\033[0;30m末尾的 应\033[0;0m重置提示颜色。前者将其设置为黑色，后者重置文本的格式。

srguiwiz的代码似乎有一些问题，jcgoble3制作更好的版本：

# Adds the current branch to the bash prompt when the working directory is
# part of a Git repository. Includes color-coding and indicators to quickly
# indicate the status of working directory.
#
# To use: Copy into ~/.bashrc and tweak if desired.
#
# Based upon the following gists:
# <https://gist.github.com/henrik/31631>
# <https://gist.github.com/srguiwiz/de87bf6355717f0eede5>
# Modified by me, using ideas from comments on those gists.
#
# License: MIT, unless the authors of those two gists object :)

git_branch() {
    # -- Finds and outputs the current branch name by parsing the list of
    #    all branches
    # -- Current branch is identified by an asterisk at the beginning
    # -- If not in a Git repository, error message goes to /dev/null and
    #    no output is produced
    git branch --no-color 2>/dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'
}

git_status() {
    # Outputs a series of indicators based on the status of the
    # working directory:
    # + changes are staged and ready to commit
    # ! unstaged changes are present
    # ? untracked files are present
    # S changes have been stashed
    # P local commits need to be pushed to the remote
    local status="$(git status --porcelain 2>/dev/null)"
    local output=''
    [[ -n $(egrep '^[MADRC]' <<<"$status") ]] && output="$output+"
    [[ -n $(egrep '^.[MD]' <<<"$status") ]] && output="$output!"
    [[ -n $(egrep '^\?\?' <<<"$status") ]] && output="$output?"
    [[ -n $(git stash list) ]] && output="${output}S"
    [[ -n $(git log --branches --not --remotes) ]] && output="${output}P"
    [[ -n $output ]] && output="|$output"  # separate from branch name
    echo $output
}

git_color() {
    # Receives output of git_status as argument; produces appropriate color
    # code based on status of working directory:
    # - White if everything is clean
    # - Green if all changes are staged
    # - Red if there are uncommitted changes with nothing staged
    # - Yellow if there are both staged and unstaged changes
    local staged=$([[ $1 =~ \+ ]] && echo yes)
    local dirty=$([[ $1 =~ [!\?] ]] && echo yes)
    if [[ -n $staged ]] && [[ -n $dirty ]]; then
        echo -e '\033[1;33m'  # bold yellow
    elif [[ -n $staged ]]; then
        echo -e '\033[1;32m'  # bold green
    elif [[ -n $dirty ]]; then
        echo -e '\033[1;31m'  # bold red
    else
        echo -e '\033[1;37m'  # bold white
    fi
}

git_prompt() {
    # First, get the branch name...
    local branch=$(git_branch)
    # Empty output? Then we're not in a Git repository, so bypass the rest
    # of the function, producing no output
    if [[ -n $branch ]]; then
        local state=$(git_status)
        local color=$(git_color $state)
        # Now output the actual code to insert the branch and status
        echo -e "\x01$color\x02[$branch$state]\x01\033[00m\x02"  # last bit resets color
    fi
}

# Sample prompt declaration based off of the default Ubuntu 14.04.1 color
# prompt. Tweak as you see fit, or just stick "$(git_prompt)" into your
# favorite prompt.
PS1='$debian_chroot\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w$(git_prompt)\[\033[00m\]\$ '

答案2

我为自己写了类似的东西。它依赖于__git_ps1from ，因此如果你的 shell 尚未设置为这样做，则/usr/lib/git-core/git-sh-prompt可能需要这样做。source /usr/lib/git-core/git-sh-prompt

_prompt_git_branch(){
    # Print git branch in color, for use in Bash PS1 or PROMPT_COMMAND.
    #   Red: untracked files
    #   Yellow: unstaged changes
    #   Blue: staged changes
    #   Cyan: nothing to commit, working directory clean

    local bold=1  # Change to 21 for not bold
    local color
    local status

    GIT_PS1_SHOWDIRTYSTATE=1
    GIT_PS1_SHOWSTASHSTATE=1
    GIT_PS1_SHOWUNTRACKEDFILES=1

    status="$(__git_ps1)"

    case $status in
    '')
        # Not in a git repo
        return
        ;;
    *'%'*)
        # Untracked files
        color=1  # red
        ;;
    *'*'*)
        # Unstaged changes
        color=3  # yellow
        ;;
    *'+'*)
        # Staged changes
        color=4  # blue
        ;;
    *)
        # Otherwise
        color=6  # cyan
        ;;
    esac

    printf '\e[%d;3%dm%s\e[m' "$bold" "$color" "$status"
}

然后，为了在 bashrc 中设置 PS1，我实际上会删除第 120 行并编辑第 60 行和第 62 行。

第 60 行（颜色）：

PS1='${debian_chroot:+($debian_chroot)}\[\e[1;32m\]\u\[\e[m\]:\[\e[1;34m\]\W\[\e[m\]$(_prompt_git_branch)\$ '

第 62 行（无颜色）：

PS1='${debian_chroot:+($debian_chroot)}\u:\W$(__git_ps1)\$ '

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