gitvb-is-changed-by-branch

#!/usr/bin/env bash
# returns if the stage matches and empty string if it doesn't
set -e

GITVB_HOME="./.git/.gitvb-v0"
MAIN_BRANCH="${MAIN_BRANCH:-main}"
USAGE="usage: gitvb-is-changed-by-branch <file> <branch>"

if [ "$1" == "" ]; then
    echo $USAGE
    exit 1
fi
if [ "$2" == "" ]; then
    echo $USAGE
    exit 1
fi
file="$1"
branch="$2"

branchFiles="$(gitvb-list-changed $branch)"

match=0
while IFS= read -r branchFile; do
    if [ "$file" == "$branchFile" ]; then
        match=$((match + 1))
        break
    fi
done <<< "$branchFiles"

if [ "$match" == 0 ]; then
    echo "$file is not on $branch" >&2
    exit 1
fi

# echo "$branch"