moulti-git-review

[xavierog]

Moulti 1.20.0 brings the environment variable MOULTI_DIFF_VERBOSE. One possible use case is to inject diff data as a bunch of steps then remove/replace those steps later. moulti-git-review demonstrates exactly this.

Screenshot

Requirements

• Moulti >= 1.20.0
• git
• optional: delta

Usage

moulti-git-review <same arguments as git rev-list>

Example: review the last 10 Git commits: moulti-git-review HEAD~10..

Code

#!/usr/bin/env bash
export MOULTI_INSTANCE="moulti-git-review-$$"
export MOULTI_QUIT_POLICY='running=terminate;default=quit'
[ "${MOULTI_RUN}" ] || exec moulti run -- "$0" "$@"

readarray -t commits < <(git rev-list --reverse "$@")
commit_count="${#commits[@]}"
[ "${commit_count}" -eq 0 ] && exit

moulti set --title="Git review: $*" --progress-bar --progress-target="${commit_count}"

index=0
((last_index=commit_count-1))
declare -A steps
while true; do
	buttons=()
	[ "${index}" -lt "${last_index}" ] && buttons+=(--button 'next' 'default' 'Next')
	[ "${index}" -gt 0 ] && buttons+=(--button 'previous' 'default' 'Previous')
	buttons+=(--button 'first' 'default' 'First')
	buttons+=(--button 'last' 'default' 'Last')

	((display_index=index+1))
	moulti question add 'command' "${buttons[@]}" \
		--title="Git review: commit ${display_index}/${commit_count}: ${commits[$index]}" \
		--top-text="Which commit do you want to review?" \
		--placeholder="commit number: between 1 and ${commit_count}" \
		--restrict="^(?!0)[0-9]{,${#commit_count}}$"

	steps=()
	while read -r step_type step_id; do
		steps[${step_type}]="${step_id} ${steps[${step_type}]}"
	done < <(MOULTI_DIFF_NO_TITLE='' MOULTI_DIFF_VERBOSE='y' moulti diff run -- git show "${commits[$index]}")
	moulti set --progress="${display_index}"

	action=$(moulti question get-answer --wait 'command')
	[ "${action}" == 'next' ] && ((index++))
	[ "${action}" == 'previous' ] && ((index--))
	[ "${action}" == 'first' ] && index=0
	[ "${action}" == 'last' ] && index="${last_index}"
	[[ "${action}" =~ ^[0-9]+$ ]] && ((index=action>commit_count?last_index:action-1))

	for step_type in "${!steps[@]}"; do
		moulti "${step_type}" delete ${steps[$step_type]} &
	done
	wait
	moulti buttonquestion delete 'command'
done