SYNOPSIS
trang [-I rng|rnc|dtd|xml] [-O rng|rnc|dtd|xsd] [-i input-param] [-o output-param] input-file ... output-fileDESCRIPTION
trang takes as input a schema written in any of the following formats:- RELAX NG (XML syntax)
- RELAX NG (compact syntax)
- XML 1.0 DTD
and produces as output a schema written in any of the following formats:
- RELAX NG (XML syntax)
- RELAX NG (compact syntax)
- XML 1.0 DTD
- W3C XML Schema
Trang can also infer a schema from one or more example XML documents.
Trang uses an internal representation based on RELAX NG. For each supported input format, there is an input module that converts a schema in that input format into this internal representation. For each supported output format, there is an output module that converts the internal representation into a schema in that output format. Thus, any supported input format can be translated to any supported output format.
Trang requires two command-line arguments: the first is the URI or filename of the schema to be translated; the second is the output filename.
Trang infers the input and output modules to be used from the extension of input and output filenames as follows:
- .rng
- RELAX NG (XML syntax)
- .rnc
- RELAX NG (compact syntax)
- .dtd
- XML 1.0 DTD
- .xsd
- W3C XML Schema
- .xml
- XML documents (used as examples from which to infer a schema)
This inference can be overridden using the -I and -O options.
When the input is XML documents used as examples to infer a schema, more than one input file may be specified as arguments. All the input files are specified before the output file.
OPTIONS
- -I rng|rnc|dtd|xml
- Specifies which input module to use.
- -O rng|rnc|dtd|xsd
- Specifies which output module to use.
- -i input-param
- -o output-param
- Specifies a parameter for an input (-i) or output (-o) module. The -i and -o options may be used multiple times in order to specify multiple parameters. There are two kinds of parameter: boolean parameters and string-valued parameters. A string-valued parameter is specified using the form name=value. A boolean parameter is specified using the form name or no-name. The applicable parameters depend on the particular input and output module. For details, see the HTML documentation.
AUTHOR
James Clark ([email protected])This product includes software developed by the Apache Software Foundation (http://www.apache.org/).