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<RefEntry id="parse-starttag-pi">
<!-- This file is generated automatically from the DSSSL source. -->
<!-- Do not edit this file! -->
<?html-filename parse-starttag-pi.html>
<RefMeta>
<RefEntryTitle>parse-starttag-pi</RefEntryTitle>
<RefMiscInfo Role="file">dblib.dsl</RefMiscInfo>
</RefMeta>
<RefNameDiv>
<RefName>parse-starttag-pi</RefName>
<RefPurpose>Parses a structured PI and returns a list of values</RefPurpose>
</RefNameDiv>
<RefSynopsisDiv><Title>Synopsis</Title>
<Synopsis>
(parse-starttag-pi pi)
</Synopsis>
</RefSynopsisDiv>
<RefSect1><Title>Description</Title>
<para>
It has become common practice to give PIs structured values. The
resultis a PI that looks a lot like a start tag with attributes:
</para>
<para>
<?pitarget name1="value1" name2=<literal>value2</literal> name3="value <literal>3</literal>">
</para>
<para>
This function parses a PI with this form and returns a list. The
list contains the pitarget and each of the name/value pairs:
</para>
<para>
("pitarget" "name1" "value1" "name2" "value2" "name3" "value <literal>3</literal>")</para>
</RefSect1>
<RefSect1><Title>Author</Title>
<para>
Norman Walsh, <ndw@nwalsh.com>
</para>
</RefSect1>
<RefSect1><Title>Source Code</Title>
<ProgramListing>
(define (parse-starttag-pi pi)
;; Parses a structured PI and returns a list of values
(let* ((strippi (strip pi))
(spacepos (string-index strippi " ")))
(if (< spacepos 0)
(list strippi)
(let* ((pitarget (substring strippi 0 spacepos))
(pivalues (strip (substring strippi
(+ spacepos 1)
(string-length strippi)))))
(let loop ((values pivalues) (result (list pitarget)))
(if (string=? values "")
result
(loop (parse-skip-pi-attribute values)
(append result (parse-pi-attribute values)))))))))
</ProgramListing>
</RefSect1>
</RefEntry>
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