scripts/git-diff-add at master · evan1026/scripts · GitHub

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#!/bin/bash

## --------------------------------------------------------------------
## git-diff-add 1.0.0
##
## This is free software: you are free to change and redistribute it.
## There is NO WARRANTY, to the extent permitted by law.
## --------------------------------------------------------------------

### This script goes through all paths that are modified/not added (anything
### that shows up in `git status` that isn't staged), prints out a diff for
### each one, and then prompts you for whether you want to stage those changes.
###
### Usage:
###     git-diff-add [options]
###     git-diff-add <folder>
###
### Arguments:
###     folder  An optional argument to specify the folder to operate on
###
### Options:
###     -h, --help     Show help options.
###     -v, --version  Print program version.

help=$(grep "^### " "$0" | cut -c 5-)
version=$(grep "^## "  "$0" | cut -c 4-)
eval "$(docopts -A args -h "$help" -V "$version" : "$@")"

function do_status() {
    folder="$1"

    if [ -z "$folder" ]; then
        folder="$(git rev-parse --show-toplevel)"
    fi

    local IFS=$'\n'
    entries=($(git status -u "$folder" --porcelain=2))
    unset IFS

    for ((i = 0; i < ${#entries[@]}; i++)); do
        handle_line ${entries[$i]}
    done
}

function handle_line() {
    modification_type="$1"
    shift

    case $modification_type in
        1)  handle_changed $@
            ;;
        2)  handle_renamed $@
            ;;
        u)  handle_unmerged $@
            ;;
        ?)  handle_untracked $@
            ;;
        *)  echo UNKNOWN MODIFICATION TYPE \"$modification_type\"
    esac
}

function handle_changed() {
    change_type="$1"
    before=${change_type:0:1}
    after=${change_type:1:1}

    path="$8"

    if [[ "$after" != "." ]]; then
        normal_diff "$path"
    fi
}

function handle_renamed() {
    change_type="$1"
    before=${change_type:0:1}
    after=${change_type:1:1}

    path="$9"
    orig_path="${10}"

    if [[ "$after" != "." ]]; then
        normal_diff "$path"
    fi
}

function handle_unmerged() {
    path="${10}"
    normal_diff "$path"
}

function handle_untracked() {
    untracked_diff "$1"
}

function normal_diff() {
    git diff -- "$1"
    prompt_to_stage "$1"
}

function untracked_diff() {
    git diff /dev/null "$1"
    prompt_to_stage "$1"
}

function prompt_to_stage() {
    read -r -p "Add to staging area? [y/N] " response
    if [[ "$response" =~ ^([yY][eE][sS]|[yY])$ ]]; then
        git add "$1"
    fi
}

do_status "${args[<folder>]}"