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README.md

IANA IPP Registry Tools

This repository contains the tools used by the PWG IPP workgroup to maintain the IANA IPP registry and sample IPP strings file. Four tools and a script are provided:

  • apply-pending.sh: A script that applies a list of plain text registrations;
  • register: A tool to apply plain text registration templates to the current IANA IPP XML registry file;
  • regtocups: A prototype tool for generating encoding and validation functions using the CUPS API;
  • regtosm: A prototype tool for generating a PWG Semantic Model XML schema; and
  • regtostrings: A tool for generating the ipp.strings file that provides localized strings for all registered attributes and values;

Prerequisites

The tools use the Mini-XML library to access the XML registry file. Otherwise you need a C compiler and a make program.

The "apply-pending.sh" script uses the curl program to download the current IANA IPP registry file.

Compiling

Run make. The included makefile should not require any additional tweaking.

Using the "apply-pending.sh" Script

The apply-pending.sh script applies one or more plain text registrations to the current IANA IPP XML registry file:

./apply-pending.sh [list-of-templates.txt]

If omitted, the script will use all .txt files in the pending directory.

The current IANA IPP registry (input) file is cached in the current directory with the name iana-ipp-registrations.xml.

The output XML file is named ipp-registrations.xml and may be uploaded to the PWG FTP server or submitted to IANA.

Using the "register" Tool

The register tool applies a single plain text registration template to the specified XML file:

./register -o DESTINATION.xml -t 'TITLE' -x URL SOURCE.xml TEMPLATE.txt

The following options are understood:

  • -o DESTINATION.xml: Specifies the output (XML) file
  • -t TITLE: Specifies the title of the reference for the registration
  • -x URL: Specifies the URL of the reference for the registration
  • SOURCE.xml: Specifies the input (XML) file
  • TEMPLATE.txt: Specifies the registration template file

The source XML file should be the current IANA IPP registration file at https://www.iana.org/assignments/ipp-registrations/ipp-registrations.xml.

The template file is a plain text registration of attributes, values, status codes, operations, etc. as documented in RFC 8011. This format is summarized in the pending/PENDING.md file.

Using the "regtocups" Tool

The regtocups tool reads the source XML registry file and writes CUPS code to encode or validate IPP attributes using the CUPS API:

./regtocups --encode [OPTIONS] SOURCE.xml >DESTINATION.c
./regtocups --validate [OPTIONS] SOURCE.xml >DESTINATION.c

The --encode option tells regtocups to generate a C function that encodes a cups_option_t array as IPP attributes, while the --validate option tells it to generate a C function that validates the attributes in an ipp_t message.

The common options are as follows:

  • -f FUNCTION-NAME: Specify the function name.
  • -g "GROUP-NAME": Specify the attribute group name.
  • -n "ATTRIBUTE-NAME": Specify one or more attributes; separate attributes by commas or use multiple -a options to specify multiple attributes.

The source XML file should be the current IANA IPP registration file at http://www.iana.org/assignments/ipp-registrations/ipp-registrations.xml.

Using the "regtosm" Tool

The regtosm tool reads the source XML registry file and writes a PWG Semantic Model XML v3 schema to the specified directory. The following command will write the current registry to a directory called test-schema:

./regtosm ipp-registrations.xml test-schema

The source XML file should be the current IANA IPP registration file at http://www.iana.org/assignments/ipp-registrations/ipp-registrations.xml.

Using the "regtostrings" Tool

The regtostrings tool reads the source XML registry file and writes the localizable strings to an Apple .strings file, a GNU gettext .po file, or a C source file to the standard output. For example, to generate a template .strings file with US English strings, run the following command:

./regtostrings ipp-registrations.xml >DESTINATION.strings

The --code option tells regtostrings to generate C code:

./regtostrings --code ipp-registrations.xml >DESTINATION.c

The --po option tells regtostrings to generate a GNU gettext .po file:

./regtostrings --po ipp-registrations.xml >DESTINATION.po

The source XML file should be the current IANA IPP registration file at http://www.iana.org/assignments/ipp-registrations/ipp-registrations.xml.

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