source: draft-ietf-httpbis/latest/abnf2xml2rfc.xslt @ 1587

Last change on this file since 1587 was 581, checked in by julian.reschke@…, 11 years ago

editorial: use BAP's mode that adds comments for productions that contain printable characters

File size: 3.6 KB
Line 
1<xsl:transform
2  xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
3  xmlns:xs="http://www.w3.org/2001/XMLSchema"
4  xmlns:x="http://purl.org/net/xml2rfc/ext"
5  version="2.0"
6  exclude-result-prefixes="xs">
7
8<xsl:output method="xml" omit-xml-declaration="yes" indent="no"/>
9
10<xsl:param name="abnf"/> 
11 
12<xsl:template match="/">
13  <xsl:variable name="src" select="."/>
14  <xsl:variable name="collected" select="unparsed-text($abnf)"/>
15
16  <xsl:variable name="all-lines" as="xs:string*" select="tokenize($collected, '\r?\n')"/>
17  <xsl:variable name="lines" select="$all-lines[normalize-space(.)!='']"/>
18 
19  <section title="Collected ABNF" anchor="collected.abnf">
20    <xsl:text>&#10;</xsl:text>
21    <figure>
22      <xsl:text>&#10;</xsl:text>
23      <artwork type="abnf" name="{$abnf}">
24        <xsl:for-each select="$lines[substring(.,1,2)!='; ']">
25       
26          <!-- Group by start character -->
27          <xsl:variable name="lineno" select="position()"/>
28          <xsl:variable name="sc1" select="substring(.,1,1)"/>
29          <xsl:variable name="sc0" select="x:laststartchar($lines, $lineno - 1)"/>
30          <xsl:if test="$sc1!=' ' and $sc0!=' ' and $sc1!=$sc0">
31            <xsl:text>&#10;</xsl:text>
32          </xsl:if>
33
34          <!-- Add cross-refs for terms -->
35          <xsl:analyze-string select="." regex='^([A-Za-z0-9\-]+) = ' flags="sm">
36            <xsl:matching-substring>
37              <xsl:variable name="term" select="regex-group(1)"/>
38              <xsl:choose>
39                <xsl:when test="$src//*[@anchor=$term] or $src//x:anchor-alias[@value=$term]">
40                  <x:ref><xsl:value-of select="$term"/></x:ref>
41                </xsl:when>
42                <xsl:otherwise>
43                  <xsl:value-of select="$term"/>
44                </xsl:otherwise>
45              </xsl:choose>
46              <xsl:text> = </xsl:text>
47            </xsl:matching-substring>
48            <xsl:non-matching-substring>
49              <xsl:value-of select="."/>
50            </xsl:non-matching-substring>
51          </xsl:analyze-string>
52
53          <xsl:text>&#10;</xsl:text>
54        </xsl:for-each>
55      </artwork>
56      <xsl:text>&#10;</xsl:text>
57    </figure> 
58    <xsl:text>&#10;</xsl:text>
59   
60    <figure>
61      <preamble>ABNF diagnostics:</preamble>
62      <artwork type="inline">
63        <xsl:text>&#10;</xsl:text>
64        <xsl:for-each select="$lines[substring(.,1,2)='; ']">
65          <xsl:value-of select="."/>
66          <xsl:text>&#10;</xsl:text>
67        </xsl:for-each>
68    </artwork></figure>
69  </section>
70
71  <!-- check whether it's up-to-date... -->
72  <xsl:variable name="src">
73    <xsl:for-each select="//section[@anchor='collected.abnf']//artwork">
74      <xsl:value-of select="."/>
75    </xsl:for-each>
76  </xsl:variable>
77 
78  <xsl:if test="not(//section[@anchor='collected.abnf']) or normalize-space($src) != normalize-space($collected)">
79    <xsl:message>WARNING: appendix contained inside source document needs to be updated</xsl:message>
80    <!--<xsl:message>A: <xsl:value-of select="//section[@anchor='collected.abnf']//artwork"/></xsl:message>
81    <xsl:message>B: <xsl:value-of select="$collected"/></xsl:message>-->
82  </xsl:if>
83</xsl:template>
84
85<xsl:function name="x:laststartchar">
86  <xsl:param name="lines"/>
87  <xsl:param name="position"/>
88 
89  <xsl:choose>
90    <xsl:when test="' '!=substring($lines[$position],1,1)">
91      <xsl:value-of select="substring($lines[$position],1,1)"/>
92    </xsl:when>
93    <xsl:otherwise>
94      <xsl:value-of select="x:laststartchar($lines, $position - 1)"/>
95    </xsl:otherwise>
96  </xsl:choose>
97</xsl:function>
98 
99 
100</xsl:transform>
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