Prints the URL of the remote origin of the current git repository, optionally with a SHA1 commit

git-url.sh

#!/usr/bin/env bash
# Unofficial Bash Strict Mode
set -euo pipefail
IFS=$'\n\t'

function git_url_to_https {
    local git_url

    git_url=$(cat)
    if [[ $git_url =~ ^git@([^:]+):(.+)(\.git)?$ ]]; then
        git_url="https://${BASH_REMATCH[1]}/${BASH_REMATCH[2]}"
    fi
    if [[ $git_url =~ \.git$ ]]; then
        git_url=${git_url:0:${#git_url}-4}
    fi
    if [[ -n ${sha1:-} ]]; then
        if [[ $git_url =~ ^https?://github.com/ ]]; then
            git_url="$git_url/commit/$sha1"
        elif [[ $git_url =~ ^https?://bitbucket.org/ ]]; then
            git_url="$git_url/commits/$sha1"
        elif [[ $git_url =~ ^https?://([^/]+)/ ]]; then
            >&2 echo "Adding SHA1-commit to URL is not supported for '${BASH_REMATCH[1]}'."
            exit 1
        else
            >&2 echo "Adding SHA1-commit to URL is not supported for unknown URL type '${git_url}'."
            exit 1
        fi
    fi
    if [[ -n $git_url ]]; then 
        echo "${git_url}"
    fi
}

while [[ $# -gt 0 ]]; do
    case $1 in
        -* | -h | --help | -\? ) >&2 echo "Usage: $(basename $0 .sh) [sha1]"; exit 0;;
        *) sha1="$1";;
    esac
    shift
done
if [[ -n ${sha1:-} && ${#sha1} -lt 8 ]]; then 
    sha1="$(git rev-parse $sha1)"
fi
git config --get remote.origin.url | git_url_to_https