Collection of crossword puzzle file format converters and other utilities, written in Kotlin.

The library uses Kotlin multiplatform and supports Java, Javascript, and native Mac/Windows/Linux.

This project also includes a web interface for generating digital versions of different variety puzzles and a command line tool to perform conversions and dump puzzle information.

• Read crosswords in a variety of file formats, including formats used by online puzzle sites
• Remove a direction of clues to make puzzles more challenging
• Write crosswords in .puz, .jpz, or .ipuz format
• Generate PDFs for crosswords
• Create .jpz and .ipuz files for variety crossword puzzles

In your build.gradle:

dependencies {
  implementation "com.jeffpdavidson.kotwords:kotwords:1.5.0"
}

Sample code for parsing a JPZ file and converting it to a PDF with only Down clues:

  val pdf = JpzFile(jpz).asPuzzle().withDownsOnly().asPdf();

See the Javadoc for full API details.

Release builds include Mac/Windows/Linux command-line tools.

Example to convert a PUZ file to a PDF:

kotwords-cli convert \
    --input-file=/path/to/puzzle.puz \
    --input-format=PUZ \
    --output-file=/path/to/puzzle.pdf \
    --output-format=PDF

Example to print all clues and answers in a JPZ file:

kotwords-cli dump-entries \
    --file=/path/to/puzzle.jpz \
    --output-format="[[clue]]: [[answer]]"

Run the tool with no flags to see all available commands, and add --help after any command to see the available options.

Kotwords is a standard Gradle project that can be imported into IntelliJ. Common commands include:

• Run all tests for all environments: ./gradlew check
• Run a local instance of the web tools: ./gradlew jsBrowserDevelopmentRun
• Publish to the local Maven repository for testing in another application: ./gradlew publishToMavenLocal

Bug reports and contributions welcome!