gen-mod-from-diff.sh

gen-mod-from-diff.sh

#!/bin/bash

test -z "$1" && {
cat >/dev/stderr <<-HELP
Usage: $0 mod-name
Use this script from top level of Cataclysm checkout, with your changes to data/json not added to git.
It will try to make a mod out of those changes instead.
The script needs:
  - python (2?)
  - jsondiff from jsonpatch python package (https://python-json-patch.readthedocs.io)
  - jq (https://stedolan.github.io/jq/)
  - git
HELP
exit 2
}

set -x
MODDIR=data/mods/$1
git diff --name-only data/json |
        grep '\.json$' |
        while read f
        do
                DIR=$(dirname $f)
                DIR=${DIR#data/json/}
                BASENAME=$(basename $f .json)

                mkdir -p $MODDIR/$DIR
                JQ_EXPR='[.[] | {key:.id, value: .}] | from_entries'
                # make a fake json patch that retains item id information
                jq "$JQ_EXPR" $f > $MODDIR/$DIR/$BASENAME.by-id.json
                jsondiff --indent=2 \
                        <(git show HEAD:$f | jq "$JQ_EXPR") \
                        $MODDIR/$DIR/$BASENAME.by-id.json \
                        > $MODDIR/$DIR/$BASENAME.patch.json
                python - $MODDIR/$DIR/$BASENAME.by-id.json $MODDIR/$DIR/$BASENAME.patch.json $MODDIR/$DIR/$BASENAME.json <<'PYTHON'
import json, sys
fn_by_id, fn_patch, fn_out = sys.argv[1:]
by_id = json.load(open(fn_by_id))
patch = json.load(open(fn_patch))
items = {}
for chunk in patch:
    _, id, key = chunk['path'].split('/')
    key = key.replace('~1~1', '//')
    if id not in items:
        items[id] = {}
    item = items[id]
    item['id'] = id
    item['copy-from'] = id
    item['type'] = by_id[id]['type']
    item['name'] = by_id[id]['name']
    item[key] = chunk['value']
with open(fn_out, 'w') as out:
    json.dump(items.values(), out, indent=2)
    out.write('\n')
PYTHON
                test -z "$KEEP_FILES" && rm $MODDIR/$DIR/$BASENAME.by-id.json $MODDIR/$DIR/$BASENAME.patch.json
        done
set +x
echo Written mod data to $MODDIR
test -f $MODDIR/modinfo.json || echo Warning: The mod still needs $MODDIR/modinfo.json