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114 lines
3.8 KiB
Bash
114 lines
3.8 KiB
Bash
#!/usr/bin/env bash
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: 2024-08-07 00:27:46 +0300 (Wed, 07 Aug 2024)
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#
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# https///github.com/HariSekhon/DevOps-Bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/HariSekhon
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#
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set -euo pipefail
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[ -n "${DEBUG:-}" ] && set -x
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srcdir="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# shellcheck disable=SC1090,SC1091
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. "$srcdir/lib/github.sh"
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# shellcheck disable=SC2034,SC2154
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usage_description="
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Sets up a branch from a GitHub forked repo selected from a menu list
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If executed from the checkout of GitHub repo, determines if this is a fork and if so finds the upstream forks to pull from
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Or the owner/repo can be specified explicitly, with the shorthand '.' meaning the current repo's forks, regardless of whether it is itself a fork
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Requires GitHub CLI to be installed and authenticated, as well as jq
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"
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# used by usage() in lib/utils.sh
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# shellcheck disable=SC2034
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usage_args="[<owner/repo>]"
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help_usage "$@"
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max_args 1 "$@"
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check_github_origin
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if [ $# -gt 0 ]; then
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owner_repo="$1"
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shift
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if [ "$owner_repo" = . ]; then
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timestamp "Determining self owner/repo"
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owner_repo="$(github_owner_repo)"
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timestamp "Determined self owner/repo to be: $owner_repo"
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fi
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elif is_github_fork; then
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timestamp "Detected running in the checkout of a forked repo"
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timestamp "Determining upstream origin repo"
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owner_repo="$(github_upstream_owner_repo || die "Not a forked repo?")"
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timestamp "Determined upstream origin repo to be: $owner_repo"
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else
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timestamp "Determining owner/repo"
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owner_repo="$(github_owner_repo)"
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timestamp "Determined owner/repo to be: $owner_repo"
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fi
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timestamp "Retrieving forked repos for: $owner_repo"
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fork_list="$(gh api "repos/$owner_repo/forks" --paginate --jq '.[].full_name')"
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if is_blank "$fork_list"; then
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die "No forks found for repo: '$owner_repo"
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fi
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fork_owner_repo="$(fzf --prompt="Select a Fork: " --height=40% --border --ansi <<< "$fork_list")"
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timestamp "Retrieving branches for chosen fork: $fork_owner_repo"
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branches="$(gh api -H "Accept: application/vnd.github.v3+json" "/repos/$fork_owner_repo/branches" --paginate -q '.[].name')"
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if is_blank "$branches"; then
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die "No branches found or unable to fetch branches"
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fi
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branch=$(fzf --prompt="Select a Branch from fork '$fork_owner_repo': " --height=40% --border --ansi <<< "$branches")
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fork_remote="${fork_owner_repo//\//_}"
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timestamp "Determining git base url"
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echo
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github_url_base="$(
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git remote -v |
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awk '/origin/ { print $2; exit }' |
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sed 's|\(.*github.com[:/]\).*|\1|'
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)"
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fork_remote_url="${github_url_base}${fork_owner_repo}"
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fork_remote_url_escaped="${fork_remote_url//\//\\/}"
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if git remote -v | awk '{print $2}' | grep -Eq "^$fork_remote_url(\\.git)?$"; then
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timestamp "Existing git remote found with fork url '$fork_remote_url', reusing that"
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fork_remote="$(git remote -v | awk "/[[:space:]]${fork_remote_url_escaped}[[:space:].]/ {print \$1; exit}")"
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if is_blank "$fork_remote"; then
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die "Failed to parse existing git remote for url: $fork_remote_url_escaped"
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fi
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timestamp "Using existing fork remote: $fork_remote"
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elif git remote -v | grep -q "^${fork_remote}[[:space:]]"; then
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timestamp "Git remote '$fork_remote' already exists, not creating"
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else
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timestamp "Adding git remote '$fork_remote' to be able to pull directly from forked repo"
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git remote add "$fork_remote" "$fork_remote_url"
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fi
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echo
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timestamp "Fetching branch '$branch' from fork repo '$fork_owner_repo'"
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git fetch "$fork_remote" "$branch"
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git checkout -b "$fork_remote/$branch" "$fork_remote/$branch"
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