JIPP: A Java-compatible IPP library

This project includes:

• jipp-core is an IPP parser/builder for IPP packets.
• jipp-pdls converts rasterized documents into common page description languages (PCLm and PWG-Raster).
• jprint shows how jipp-core can be used to send a document to a printer.
• jrender shows how jipp-pdl can be used to convert a PDF to PCLm or PWG-Raster.

jipp-core features:

• Supports construction of IPP servers, clients, routers, gateways, etc.
• Common operations and attributes available for use.
• Can be extended to support new operations and attributes.
• Can be used over any transport (typically HTTP).
• Includes a pretty-printer for human-readable IPP packet display.
• Kotlin users can access a type-safe packet building DSL

What could I do with this?

• Scan and show available printers on your network to your users.
• Implement an Android Print Service.
• Test IPP clients or IPP printers in interesting ways.
• Experiment with alternative IPP transports.
• Implement a cloud-based print server or client.

The API is Java-compatible but implemented in Kotlin.

Usage

1. Add the current version of JIPP to your project

   dependencies {
   compile 'com.hp.jipp:jipp-core:0.7.16'
   compile 'com.hp.jipp:jipp-pdl:0.7.16' // Only needed if transforming PDLs
   }

2. Create an IppClientTransport or IppServerTransport (see example HttpIppClientTransport.java)
3. Use the transport to send and receive IppPacket objects, e.g.:

   URI uri = URI.create("http://192.168.1.100:631/ipp/print");
   IppPacket printRequest = IppPacket.printJob(uri)
       .putOperationAttributes(documentFormat.of("application/pdf")))
       .build();
   transport.sendData(uri, new IppPacketData(printRequest, new FileInputStream(inputFile)));

Sample Applications

jprint

Demonstrates a simple print engine. To run:

# build the app
./gradlew jprint:build

# unzip in the current directory
unzip -o ./sample/jprint/build/distributions/jprint-*.zip

# Use IPP to print a file to the supplied HTTP/IPP endpoint.
# (The printer must natively support the supplied file type.)
jprint-*/bin/jprint -p sample.pdf ipp://192.168.1.102:631/ipp/print

jrender

An example of rendering a PDF to PWG-Raster or PCLm. To run:

# build the app
./gradlew jrender:build

# unzip in the current directory
unzip -o ./sample/jrender/build/distributions/jrender-*.zip

# Convert a PDF-file to PWG-Raster.
jrender-*/bin/jrender sample.pdf sample.pwg

# Convert a PDF-file to PCLm.
jrender-*/bin/jrender sample.pdf sample.pclm

API Maturity

Until 1.0, APIs may still be changed in non-backwards-compatible ways. See HISTORY.md for more details.

Dependencies

jipp-core's only dependencies are JDK 8+ and the current Kotlin runtime.

Building

To build, run ./gradlew build.

A full build of this project requires python (2.x) and dot to generate dependency graphs.