ASCII-hul Module

1 Introduction

The ASCII-hul module recognizes and validates ASCII content streams.

The module is invoked by the:

jhove ... -m ASCII-hul ...

command line option.

This module can be configured with the following parameters:

• withTextMD=true to ask for the output of a textMD block in the text technical properties.

2 Coverage

• ASCII (ANSI X3.4-1986, ECMA-6, ISO 646:1991) [ANSI X3.4, ECMA-6, ISO 646]

3 Well-Formedness

The following criteria must be met by an ASCII content stream for JHOVE to consider it well-formed:

• The integer value of every octet in the stream is in the inclusive range [0x00, 0x7F].

4 Validity

The following criteria must be met by an ASCII content stream for JHOVE to consider it valid:

• The ASCII content stream is well-formed.

5 Representation Information

The MIME type is reported as: text/plain; charset=US-ASCII

In addition to the standard JHOVE representation information, the module defines the following properties:

• Property “ASCIIMetadata” of type PROPERTY and arity LIST
  • Property “LineEndings” of type STRING and arity LIST containing: CR, CRLF, or LF
  • Property “ControlCharacters” of type STRING and arity LIST containing the control characters in readable form, e.g., “TAB (0x09)”
  • If withTextMD, Property “TextMDMetadata” of type TextMDMetadata and arity SCALAR