Created
March 11, 2020 09:20
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better bash prompt for git repos
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| # Colors | |
| RED="\[\033[0;31m\]" | |
| YELLOW="\[\033[0;33m\]" | |
| BLUE="\[\033[0;34m\]" | |
| LIGHT_RED="\[\033[1;31m\]" | |
| LIGHT_GREEN="\[\033[1;32m\]" | |
| WHITE="\[\033[1;37m\]" | |
| LIGHT_GRAY="\[\033[0;37m\]" | |
| COLOR_NONE="\[\e[0m\]" | |
| # Used by GIT and SVN for clean directories | |
| GREEN="\[\033[0;32m\]" | |
| # Used by SVN for modified files | |
| # Used by GIT for files tracked, modified but not staged. | |
| YELLOW="\[\033[0;33m\]" | |
| # Used by GIT for staged, but modified. Shouldn't normally see this, the way I work. | |
| CYAN="\[\033[0;36m\]" | |
| # Used by GIT and SVN for unrevisioned / untracked files | |
| RED="\[\033[0;31m\]" | |
| function is_git_repo { | |
| git branch > /dev/null 2>&1 | |
| } | |
| function set_git_branch { | |
| # Capture the output of the "git status" command. | |
| git_status="$(git status 2>&1)" | |
| # Set color based on clean/staged/dirty. | |
| if [[ ${git_status} =~ "working directory clean" ]]; then | |
| state="${GREEN}" | |
| elif [[ ${git_status} =~ "working tree clean" ]]; then | |
| state="${GREEN}" | |
| elif [[ ${git_status} =~ "Changes to be committed" ]]; then | |
| state="${YELLOW}" | |
| elif [[ ${git_status} =~ "fatal: this operation" ]]; then | |
| state="${BLUE}" | |
| else | |
| state="${RED}" | |
| fi | |
| # Set arrow icon based on status against remote. | |
| ahead_pattern="Your branch is ahead of" | |
| behind_pattern="Your branch is behind" | |
| diverge_pattern="Your branch and (.*) have diverged" | |
| if [[ ${git_status} =~ ${ahead_pattern} ]]; then | |
| compared_to_remote="↑" | |
| elif [[ ${git_status} =~ ${behind_pattern} ]]; then | |
| compared_to_remote="↓" | |
| elif [[ ${git_status} =~ ${diverge_pattern} ]]; then | |
| compared_to_remote="↕" | |
| else | |
| compared_to_remote="" | |
| fi | |
| # Get the name of the branch. | |
| branch_pattern="On branch ([^${IFS}]*)" | |
| if [[ ${git_status} =~ ${branch_pattern} ]]; then | |
| branch=${BASH_REMATCH[1]} | |
| else | |
| detached_pattern="HEAD detached at ([^${IFS}]*)" | |
| if [[ ${git_status} =~ ${detached_pattern} ]]; then | |
| branch=${BASH_REMATCH[1]} | |
| else | |
| branch="no branch" | |
| fi | |
| fi | |
| # Get Current branch. If no branch, warn about detached HEAD | |
| #cur_branch=$(git rev-parse --abbrev-ref HEAD) | |
| #[[ ${cur_branch} == "HEAD" ]] || branch=${cur_branch} &&\ | |
| # branch="DETACHED: $(git rev-parse --short HEAD)" | |
| # Are we in a submodule? | |
| dotgit="$(git rev-parse --show-toplevel)/.git" | |
| [[ -f "${dotgit}" ]] && sub="<sub>" || sub="" | |
| # Set the final branch string that gets used in the caller function | |
| GITPROMPT="${state}(${branch})${sub}${compared_to_remote}${COLOR_NONE} " | |
| } | |
| # Return the prompt symbol to use, colorized based on the return value of the | |
| # previous command. | |
| function set_prompt_symbol () { | |
| if test $1 -eq 0 ; then | |
| PROMPT_SYMBOL="\$" | |
| else | |
| PROMPT_SYMBOL="${RED}\$${COLOR_NONE}" | |
| fi | |
| } | |
| # Set the full bash prompt. | |
| function set_bash_prompt () { | |
| #{{{ | |
| # Set the PROMPT_SYMBOL variable. We do this first so we don't lose the | |
| # return value of the last command. | |
| set_prompt_symbol $? | |
| # Set the GITPROMPT variable. | |
| GITPROMPT="" | |
| PS1="[\u@${HH}][\w] ${GITPROMPT}${PROMPT_SYMBOL}\n$ " | |
| if is_git_repo ; then | |
| set_git_branch | |
| fi | |
| # Set the bash prompt variable. | |
| PS1="[\u@${HH}][\w] ${GITPROMPT}${PROMPT_SYMBOL}\n$ " | |
| } | |
| #}}} | |
| PROMPT_COMMAND=set_bash_prompt |
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