Git aliases

git-pr

#!/bin/env bash

find_branch () {
    for branch in ${1+"$@"}; do
        if [ `git branch --list "$branch" | wc -l` -gt 0 ]; then
            echo "$branch"
            break
        fi
    done
}

find_remote () {
    for remote in ${1+"$@"}; do
        if [ `git remote | egrep "^$remote$" | wc -l` -gt 0 ]; then
            echo "$remote"
            break
        fi
    done
}

upstream=$(find_remote upstream origin)
origin=$(find_remote origin)
active=$(git branch --list | awk '/^\*/ { print substr($0,3) }')

upstream_url=$(git remote get-url $upstream)
origin_url=$(git remote get-url $origin)

find_forked_branches () {
    git log --format=%H |\
    while read hash; do
        branches=$(git branch -r --contains "$hash" |\
                   awk '{ print substr($0,3) }' |\
                   egrep "^$upstream" |\
                   egrep -v "/HEAD\b" |\
                   egrep -v "/$active\b")
        
        if [ `echo "$branches" | wc -l` -gt 0 ]; then
            echo "$branches" | sed -E 's:^[^/]+/::'
            break
        fi
    done
}

get_project_url () {
    echo "$1" |\
    sed -E 's/\.git$//' `# Remove the .git extension from the cloning url`
}

get_project_id () {
    get_project_url "$1" |\
    sed -E 's:^[^/]+//[^/]+/::'     `# Remove protocol/domain`|\
    sed -E 's:([^/]+/[^/]+).*$:\1:' `# Remove stuff after the project id`|\
    xxd --plain                     `# To hex`|\
    tr -d '\n'                      `# Remove newlines`|\
    sed -E 's/(..)/%\1/g'           `# Prepend % to every binome`
}

# Open a Gitlab merge request
if echo "$upstream_url" | egrep "gitlab" > /dev/null; then
    forked_branches=$(find_forked_branches)
    if [ `echo "$branches" | wc -l` -gt 1 ]; then
        select forked_branch in "${forked_branches}"; do break; done
    else
        forked_branch="$forked_branches"
    fi

    project_url=$(get_project_url "$upstream_url")
    upstream_id=$(get_project_id "$upstream_url")
    origin_id=$(get_project_id "$origin_url")

    pr_url=$(cat\
        <(echo "$project_url/merge_requests/new?utf8=%E2%9C%93&")\
        <(echo "merge_request%5Bsource_project_id%5D=$origin_id&")\
        <(echo "merge_request%5Bsource_branch%5D=$active&")\
        <(echo "merge_request%5Btarget_project_id%5D=$upstream_id&")\
        <(echo "merge_request%5Btarget_project_id%5D=$forked_branch")\
        | tr -d '\n')

    echo "$pr_url" | xargs $(command -v start xdg-open)
fi

git_aliases.sh

#!/bin/env bash

git config --global alias.browse '!git config remote.origin.url | xargs `command -v start xdg-open`'