mirror of
https://github.com/neovim/neovim.git
synced 2024-12-26 14:11:15 -07:00
442 lines
13 KiB
Bash
Executable File
442 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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set -u
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set -o pipefail
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# Use privileged mode, which e.g. skips using CDPATH.
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set -p
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readonly NEOVIM_SOURCE_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
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readonly VIM_SOURCE_DIR_DEFAULT="${NEOVIM_SOURCE_DIR}/.vim-src"
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readonly VIM_SOURCE_DIR="${VIM_SOURCE_DIR:-${VIM_SOURCE_DIR_DEFAULT}}"
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readonly BASENAME="$(basename "${0}")"
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readonly BRANCH_PREFIX="vim-"
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CREATED_FILES=()
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usage() {
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echo "Helper script for porting Vim patches. For more information, see"
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echo "https://github.com/neovim/neovim/wiki/Merging-patches-from-upstream-vim"
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echo
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echo "Usage: ${BASENAME} [-h | -l | -p vim-revision | -r pr-number]"
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echo
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echo "Options:"
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echo " -h Show this message and exit."
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echo " -l Show list of Vim patches missing from Neovim."
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echo " -p {vim-revision} Download and apply the Vim patch vim-revision."
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echo " vim-revision can be a version number of the "
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echo " format '7.4.xxx' or a Git commit hash."
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echo " -s Submit a vim-patch pull request to Neovim."
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echo " -r {pr-number} Review a vim-patch pull request to Neovim."
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echo
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echo "Set VIM_SOURCE_DIR to change where Vim's sources are stored."
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echo "The default is '${VIM_SOURCE_DIR_DEFAULT}'."
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}
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# Checks if a program is in the user's PATH, and is executable.
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check_executable() {
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test -x "$(command -v "${1}")"
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}
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require_executable() {
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if ! check_executable "${1}"; then
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>&2 echo "${BASENAME}: '${1}' not found in PATH or not executable."
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exit 1
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fi
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}
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clean_files() {
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if [[ ${#CREATED_FILES[@]} -eq 0 ]]; then
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return
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fi
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echo
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echo "Created files:"
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local file
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for file in "${CREATED_FILES[@]}"; do
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echo " • ${file}"
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done
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read -p "Delete these files (Y/n)? " -n 1 -r reply
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echo
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if [[ "${reply}" =~ ^[Yy]$ ]]; then
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rm -- "${CREATED_FILES[@]}"
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else
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echo "You can use 'git clean' to remove these files when you're done."
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fi
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}
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get_vim_sources() {
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require_executable git
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if [[ ! -d ${VIM_SOURCE_DIR} ]]; then
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echo "Cloning Vim sources into '${VIM_SOURCE_DIR}'."
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git clone https://github.com/vim/vim.git "${VIM_SOURCE_DIR}"
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cd "${VIM_SOURCE_DIR}"
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else
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if [[ ! -d "${VIM_SOURCE_DIR}/.git" ]]; then
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echo "✘ ${VIM_SOURCE_DIR} does not appear to be a git repository."
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echo " Please remove it and try again."
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exit 1
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fi
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cd "${VIM_SOURCE_DIR}"
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echo "Updating Vim sources in '${VIM_SOURCE_DIR}'."
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git pull &&
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echo "✔ Updated Vim sources." ||
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echo "✘ Could not update Vim sources; ignoring error."
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fi
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}
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commit_message() {
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printf 'vim-patch:%s\n\n%s\n\n%s' "${vim_version}" \
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"${vim_message}" "${vim_commit_url}"
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}
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find_git_remote() {
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git remote -v \
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| awk '$2 ~ /github.com[:\/]neovim\/neovim/ && $3 == "(fetch)" {print $1; exit}'
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}
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assign_commit_details() {
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if [[ ${1} =~ [0-9]\.[0-9]\.[0-9]{3,4} ]]; then
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# Interpret parameter as version number (tag).
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vim_version="${1}"
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vim_tag="v${1}"
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vim_commit=$(cd "${VIM_SOURCE_DIR}" \
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&& git log -1 --format="%H" "${vim_tag}")
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local strip_commit_line=true
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else
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# Interpret parameter as commit hash.
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vim_version="${1:0:7}"
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vim_commit=$(cd "${VIM_SOURCE_DIR}" \
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&& git log -1 --format="%H" "${vim_version}")
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local strip_commit_line=false
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fi
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vim_commit_url="https://github.com/vim/vim/commit/${vim_commit}"
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vim_message="$(cd "${VIM_SOURCE_DIR}" \
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&& git log -1 --pretty='format:%B' "${vim_commit}" \
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| sed -e 's/\(#[0-9]*\)/vim\/vim\1/g')"
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if [[ ${strip_commit_line} == "true" ]]; then
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# Remove first line of commit message.
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vim_message="$(echo "${vim_message}" | sed -e '1d')"
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fi
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patch_file="vim-${vim_version}.patch"
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}
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get_vim_patch() {
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get_vim_sources
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assign_commit_details "${1}"
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git log -1 "${vim_commit}" -- >/dev/null 2>&1 || {
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>&2 echo "✘ Couldn't find Vim revision '${vim_commit}'."
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exit 3
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}
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echo
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echo "✔ Found Vim revision '${vim_commit}'."
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# Patch surgery: preprocess the patch.
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# - transform src/ paths to src/nvim/
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local vim_full
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vim_full="$(git --no-pager show --color=never -1 --pretty=medium "${vim_commit}" \
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| LC_ALL=C sed -e 's/\( [ab]\/src\)/\1\/nvim/g')"
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local neovim_branch="${BRANCH_PREFIX}${vim_version}"
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cd "${NEOVIM_SOURCE_DIR}"
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local git_remote
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git_remote="$(find_git_remote)"
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local checked_out_branch
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checked_out_branch="$(git rev-parse --abbrev-ref HEAD)"
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if [[ "${checked_out_branch}" == ${BRANCH_PREFIX}* ]]; then
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echo "✔ Current branch '${checked_out_branch}' seems to be a vim-patch"
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echo " branch; not creating a new branch."
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else
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echo
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echo "Fetching '${git_remote}/master'."
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output="$(git fetch "${git_remote}" master 2>&1)" &&
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echo "✔ ${output}" ||
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(echo "✘ ${output}"; false)
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echo
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echo "Creating new branch '${neovim_branch}' based on '${git_remote}/master'."
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cd "${NEOVIM_SOURCE_DIR}"
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output="$(git checkout -b "${neovim_branch}" "${git_remote}/master" 2>&1)" &&
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echo "✔ ${output}" ||
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(echo "✘ ${output}"; false)
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fi
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echo
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echo "Creating empty commit with correct commit message."
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output="$(commit_message | git commit --allow-empty --file 2>&1 -)" &&
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echo "✔ ${output}" ||
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(echo "✘ ${output}"; false)
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echo
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echo "Creating files."
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echo "${vim_full}" > "${NEOVIM_SOURCE_DIR}/${patch_file}"
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echo "✔ Saved full commit details to '${NEOVIM_SOURCE_DIR}/${patch_file}'."
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echo
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echo "Instructions:"
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echo
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echo " Proceed to port the patch."
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echo " You might want to try 'patch -p1 < ${patch_file}' first."
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echo
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echo " If the patch contains a new test, consider porting it to Lua."
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echo " You might want to try 'scripts/legacy2luatest.pl'."
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echo
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echo " Stage your changes ('git add ...') and use 'git commit --amend' to commit."
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echo
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echo " To port additional patches related to ${vim_version} and add them to the current"
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echo " branch, call '${BASENAME} -p' again. Please use this only if it wouldn't make"
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echo " sense to send in each patch individually, as it will increase the size of the"
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echo " pull request and make it harder to review."
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echo
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echo " When you are finished, use '${BASENAME} -s' to submit a pull request."
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echo
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echo " See https://github.com/neovim/neovim/wiki/Merging-patches-from-upstream-vim"
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echo " for more information."
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}
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hub_pr() {
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hub pull-request -m "$1"
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}
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git_hub_pr() {
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git hub pull new -m "$1"
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}
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submit_pr() {
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require_executable git
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local push_first
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push_first=1
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local submit_fn
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if check_executable hub; then
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submit_fn="hub_pr"
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elif check_executable git-hub; then
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push_first=0
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submit_fn="git_hub_pr"
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else
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>&2 echo "${BASENAME}: 'hub' or 'git-hub' not found in PATH or not executable."
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exit 1
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fi
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cd "${NEOVIM_SOURCE_DIR}"
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local checked_out_branch
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checked_out_branch="$(git rev-parse --abbrev-ref HEAD)"
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if [[ "${checked_out_branch}" != ${BRANCH_PREFIX}* ]]; then
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echo "✘ Current branch '${checked_out_branch}' doesn't seem to be a vim-patch branch."
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exit 1
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fi
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local git_remote
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git_remote="$(find_git_remote)"
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local pr_body
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pr_body="$(git log --reverse --format='#### %s%n%n%b%n' "${git_remote}"/master..HEAD)"
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local patches
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patches=("$(git log --reverse --format='%s' "${git_remote}"/master..HEAD)")
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patches=(${patches[@]//vim-patch:}) # Remove 'vim-patch:' prefix for each item in array.
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local pr_title="${patches[*]}" # Create space-separated string from array.
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pr_title="${pr_title// /,}" # Replace spaces with commas.
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local pr_message
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pr_message="$(printf '[RFC] vim-patch:%s\n\n%s\n' "${pr_title#,}" "${pr_body}")"
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if [[ $push_first -ne 0 ]]; then
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echo "Pushing to 'origin/${checked_out_branch}'."
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output="$(git push origin "${checked_out_branch}" 2>&1)" &&
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echo "✔ ${output}" ||
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(echo "✘ ${output}"; git reset --soft HEAD^1; false)
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echo
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fi
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echo "Creating pull request."
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output="$(${submit_fn} "${pr_message}" 2>&1)" &&
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echo "✔ ${output}" ||
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(echo "✘ ${output}"; false)
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echo
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echo "Cleaning up files."
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local patch_file
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for patch_file in "${patches[@]}"; do
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patch_file="vim-${patch_file}.patch"
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if [[ ! -f "${NEOVIM_SOURCE_DIR}/${patch_file}" ]]; then
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continue
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fi
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rm -- "${NEOVIM_SOURCE_DIR}/${patch_file}"
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echo "✔ Removed '${NEOVIM_SOURCE_DIR}/${patch_file}'."
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done
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}
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list_vim_patches() {
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get_vim_sources
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printf "\nVim patches missing from Neovim:\n"
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# Get commits since 7.4.602.
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local vim_commits
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vim_commits="$(cd "${VIM_SOURCE_DIR}" && git log --reverse --format='%H' v7.4.602..HEAD)"
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local vim_commit
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for vim_commit in ${vim_commits}; do
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local is_missing
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local vim_tag
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# This fails for untagged commits (e.g., runtime file updates) so mask the return status
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vim_tag="$(cd "${VIM_SOURCE_DIR}" && git describe --tags --exact-match "${vim_commit}" 2>/dev/null)" || true
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if [[ -n "${vim_tag}" ]]; then
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local patch_number="${vim_tag:5}" # Remove prefix like "v7.4."
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# Tagged Vim patch, check version.c:
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is_missing="$(sed -n '/static int included_patches/,/}/p' "${NEOVIM_SOURCE_DIR}/src/nvim/version.c" |
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grep -x -e "[[:space:]]*//[[:space:]]${patch_number} NA.*" -e "[[:space:]]*${patch_number}," >/dev/null && echo "false" || echo "true")"
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vim_commit="${vim_tag#v}"
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if (cd "${VIM_SOURCE_DIR}" && git --no-pager show --color=never --name-only "v${vim_commit}" 2>/dev/null) | grep -q ^runtime; then
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vim_commit="${vim_commit} (+runtime)"
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fi
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else
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# Untagged Vim patch (e.g. runtime updates), check the Neovim git log:
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is_missing="$(cd "${NEOVIM_SOURCE_DIR}" &&
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git log -1 --no-merges --grep="vim\-patch:${vim_commit:0:7}" --pretty=format:false)"
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fi
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if [[ ${is_missing} != "false" ]]; then
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echo " • ${vim_commit}"
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fi
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done
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echo
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echo "Instructions:"
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echo
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echo " To port one of the above patches to Neovim, execute"
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echo " this script with the patch revision as argument and"
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echo " follow the instructions."
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echo
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echo " Examples: '${BASENAME} -p 7.4.487'"
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echo " '${BASENAME} -p 1e8ebf870720e7b671f98f22d653009826304c4f'"
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echo
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echo " NOTE: Please port the _oldest_ patch if you possibly can."
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echo " Out-of-order patches increase the possibility of bugs."
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}
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review_commit() {
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local neovim_commit_url="${1}"
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local neovim_patch_url="${neovim_commit_url}.patch"
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local git_patch_prefix='Subject: \[PATCH\] '
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local neovim_patch
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neovim_patch="$(curl -Ssf "${neovim_patch_url}")"
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local vim_version
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vim_version="$(head -n 4 <<< "${neovim_patch}" | sed -n "s/${git_patch_prefix}vim-patch:\([a-z0-9.]*\)$/\1/p")"
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echo
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if [[ -n "${vim_version}" ]]; then
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echo "✔ Detected Vim patch '${vim_version}'."
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else
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echo "✘ Could not detect the Vim patch number."
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echo " This script assumes that the PR contains only commits"
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echo " with 'vim-patch:XXX' in their title."
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exit 1
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fi
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assign_commit_details "${vim_version}"
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local vim_patch_url="${vim_commit_url}.patch"
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local expected_commit_message
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expected_commit_message="$(commit_message)"
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local message_length
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message_length="$(wc -l <<< "${expected_commit_message}")"
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local commit_message
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commit_message="$(tail -n +4 <<< "${neovim_patch}" | head -n "${message_length}")"
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if [[ "${commit_message#${git_patch_prefix}}" == "${expected_commit_message}" ]]; then
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echo "✔ Found expected commit message."
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else
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echo "✘ Wrong commit message."
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echo " Expected:"
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echo "${expected_commit_message}"
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echo " Actual:"
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echo "${commit_message#${git_patch_prefix}}"
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fi
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echo
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echo "Creating files."
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echo "${neovim_patch}" > "${NEOVIM_SOURCE_DIR}/n${patch_file}"
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echo "✔ Saved pull request diff to '${NEOVIM_SOURCE_DIR}/n${patch_file}'."
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CREATED_FILES+=("${NEOVIM_SOURCE_DIR}/n${patch_file}")
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curl -Ssfo "${NEOVIM_SOURCE_DIR}/${patch_file}" "${vim_patch_url}"
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echo "✔ Saved Vim diff to '${NEOVIM_SOURCE_DIR}/${patch_file}'."
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CREATED_FILES+=("${NEOVIM_SOURCE_DIR}/${patch_file}")
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echo
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echo "Launching nvim."
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nvim -c "cd ${NEOVIM_SOURCE_DIR}" \
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-O "${NEOVIM_SOURCE_DIR}/${patch_file}" "${NEOVIM_SOURCE_DIR}/n${patch_file}"
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}
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review_pr() {
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require_executable curl
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require_executable nvim
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require_executable jq
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get_vim_sources
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local pr="${1}"
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echo
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echo "Downloading data for pull request #${pr}."
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local pr_commit_urls=($(curl -Ssf "https://api.github.com/repos/neovim/neovim/pulls/${pr}/commits" \
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| jq -r '.[].html_url'))
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echo "Found ${#pr_commit_urls[@]} commit(s)."
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local pr_commit_url
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local reply
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for pr_commit_url in "${pr_commit_urls[@]}"; do
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review_commit "${pr_commit_url}"
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if [[ "${pr_commit_url}" != "${pr_commit_urls[-1]}" ]]; then
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read -p "Continue with next commit (Y/n)? " -n 1 -r reply
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echo
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if [[ ! "${reply}" =~ ^[Yy]$ ]]; then
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break
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fi
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fi
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done
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clean_files
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}
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while getopts "hlp:r:s" opt; do
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case ${opt} in
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h)
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usage
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exit 0
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;;
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l)
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list_vim_patches
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exit 0
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;;
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p)
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get_vim_patch "${OPTARG}"
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exit 0
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;;
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r)
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review_pr "${OPTARG}"
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exit 0
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;;
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s)
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submit_pr
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exit 0
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;;
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*)
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exit 1
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;;
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esac
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done
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usage
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# vim: et sw=2
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