asm6805

#!/bin/sh

IMAGE_NAME=timex-datalink-assembler
IMAGE_VERSION=0.3.0

IMAGE_VERSIONED_TAG="$IMAGE_NAME:v$IMAGE_VERSION"
IMAGE_LATEST_TAG="$IMAGE_NAME:latest"

SCRIPT_REALPATH=$(realpath "$0")
SCRIPT_NAME=$(basename "$SCRIPT_REALPATH")
DOCKER_DIR="$(dirname "$SCRIPT_REALPATH")/docker"

# If anything goes wrong, stop the script while still calling the trap.
set -eE

# Display usage if no arguments are passed to the script.
if [ -z "$1" ]; then
  printf "%s\n" \
    "Usage: $SCRIPT_NAME ASSEMBLY_FILE [OUTPUT_FILE]" \
    "Assemble a WristApp or sound scheme for the Timex Datalink 150 and 150s." \
    "" \
    "ASSEMBLY_FILE is a path to a ZSM assembly file." \
    "OUTPUT_FILE is a path to write the ZAP or SPC file (defaults to out.zap or out.spc)." \
    "" \
    "ZSM format documentation: <https://www.toebes.com/Datalink/wristapps.html>"

  exit 1
fi

if [ ! -e "$1" ]; then
  printf '%s %s\n' "$1" "does not exist!" 1>&2
  exit 1
fi

# If an argument for the output file was passed, use it.  Otherwise, use out.zap.
if [ -n "$2" ]; then
  output_file=$2
elif grep -q '^;Sound:' "$1"; then
  output_file=out.spc
else
  output_file=out.zap
fi

# If the output file already exists, immediately exit.
if [ -e "$output_file" ]; then
  echo "$output_file already exists!" 1>&2

  exit 1
fi

# Build the Docker image if it doesn't exist.
if ! docker image inspect "$IMAGE_VERSIONED_TAG" &> /dev/null; then
  docker build "$DOCKER_DIR" --tag "$IMAGE_VERSIONED_TAG" --tag "$IMAGE_LATEST_TAG"
fi

# Assemble the program with Toebes' assembler with a wrapper script.
docker run --rm --interactive "$IMAGE_VERSIONED_TAG" /root/VAsm6805-wrapper < "$1" > "$output_file"