Aseprite Compile

aseprite-compile.sh

#!/bin/bash
# Compiles an entire directory of .aseprite files
# down to PNGs in another directory.
#
# $1: The input directory (aseprite files)
# $2: The output directory (pngs)
#
# If you're not on a standard Mac install, you can overwrite
# ASEPRITE_PATH as an environment variable pointing to your
# aseprite command.
cd "$(dirname "$0")"

# Set ASEPRITE_PATH path if it's not set by an env variable
if [[ -z "$ASEPRITE_PATH" ]]; then
    # If it's not set assume we're on a standard Mac install
    ASEPRITE_PATH="/Applications/Aseprite.app/Contents/MacOS/aseprite"
fi

#########################################
# Compiles a single Aseprite file.
#
# $1: The location of the aseprite file
# $2: The output file
#########################################
Assets__export_file() {
    mkdir -p $(dirname ${2})
    # Send this noisy output to hell
    "$ASEPRITE_PATH" -b "$1" --sheet "$2" > /dev/null
}

#########################################
# Compiles a directory of Aseprite files
# to another directory of PNGs
#
# $1: The input directory containing Aseprite files
# $2: The output directory to export to PNGs
#########################################
Assets__export_dir() {
    # A sed-friendly input & output
    local inDir="$(echo "$1" | sed -e 's/[./&]/\\&/g')"
    local outDir="$(echo "$2" | sed -e 's/[./&]/\\&/g')"

    # Compile each file
    for sourceFile in $(find "$1" -name '*.aseprite'); do
        local outFile=$(echo "$sourceFile" | sed "s/$inDir/$outDir/g" | sed "s/\.aseprite$/\.png/g")
        Assets__export_file "$sourceFile" "$outFile"
    done
}

Assets__export_dir "$1" "$2"