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This section describes the XML schema for the index files
created by archx. This schema uses the Relax NG Compact
Syntax; see Relax NG
Compact Syntax (RNC) for a description of the
schema language.
The schema is presented here in “literate programming” style. For more information on literate programming, see A source extractor for lightweight literate programming.
First is a comment block that points back here to the documentation:
# archx.rnc: Relax NG schema for bird slide archive index.
# For documentation, see:
# http://www.nmt.edu/~john/slides/archx/
#----------------------------------------------------------------
The goal symbol is archive-index,
which represents the index of one entire archive directory
(one CD's worth).
start = archive-index
archive-index = element archive-index
{ image*
}
Each image is described by one image element:
image = element image
{ attribute cat-no { text },
attribute high { xsd:positiveInteger },
attribute wide { xsd:positiveInteger }
}
The attributes are:
cat-no
The image's catalog number. This must match a
cat-no attribute in some
original element in the
birdimages.xml file.
high
The image's height in millimeters, to a precision of 0.1mm.
wide
The image's width in pixels.
Here's a small sample file:
<archive-index> <image cat-no="2005-09-05-0022" wide="512" high="462"/> <image cat-no="2005-02-18a0005" wide="2018" high="2796"/> </archive-index>