Skip to content

Instantly share code, notes, and snippets.

@HaleTom

HaleTom/cd_git_root.sh

Last active Aug 12, 2016
Embed
What would you like to do?
# Print the name of the git repository's working tree's root directory
# Search for 'Tom Hale' in http://stackoverflow.com/questions/957928/is-there-a-way-to-get-the-git-root-directory-in-one-command
# Or, shorter:
# (root=$(git rev-parse --git-dir)/ && cd ${root%%/.git/*} && git rev-parse && pwd)
# but this doesn't cover external $GIT_DIRs which are named other than .git
function git_root {
local root first_commit
# git displays its own error if not in a repository
root=$(git rev-parse --show-toplevel) || return
if [[ -n $root ]]; then
echo "$root"
return
elif [[ $(git rev-parse --is-inside-git-dir) = true ]]; then
# We're inside the .git directory
# Store the commit id of the first commit to compare later
# It's possible that $GIT_DIR points somewhere not inside the repo
first_commit=$(git rev-list --parents HEAD | tail -1) ||
echo "$0: Can't get initial commit" 2>&1 && false && return
root=$(git rev-parse --git-dir)/.. &&
# subshell so we don't change the user's working directory
( cd "$root" &&
if [[ $(git rev-list --parents HEAD | tail -1) = "$first_commit" ]]; then
pwd
else
echo "${FUNCNAME[0]}: git directory is not inside its repository" 2>&1
false
fi
)
else
echo "${FUNCNAME[0]}: Can't determine repository root" 2>&1
false
fi
}
# Change working directory to git repository root
function cd_git_root {
local root
root=$(git_root) || return $? # git_root will print any errors
cd "$root" || return $?
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.