/[cvs]/joko/Scripts/xupdate/xupdate.pl
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revision 1.1 by joko, Thu Apr 24 21:07:36 2003 UTC revision 1.2 by joko, Fri Apr 25 12:35:23 2003 UTC
# Line 4  Line 4 
4  ##  $Id$  ##  $Id$
5  ## -------------------------------------------------------------------------  ## -------------------------------------------------------------------------
6  ##  $Log$  ##  $Log$
7    ##  Revision 1.2  2003/04/25 12:35:23  joko
8    ##  added some pod
9    ##  revamped xsl
10    ##
11  ##  Revision 1.1  2003/04/24 21:07:36  joko  ##  Revision 1.1  2003/04/24 21:07:36  joko
12  ##  initial commit  ##  initial commit
13  ##  ##
# Line 31  Line 35 
35      access to the XPath API in libxml2.      access to the XPath API in libxml2.
36    
37    
38  =head3 In short:  =head3 Yet another xupdate - facts in short:
39    
40    S: It would be nice to have a pure perl thingy which does the same stuff....    S: It would be nice to have a pure perl thingy which does (almost) the same stuff....
41        
42    Q: Can we achieve compliance with its API? (just a subset ....)    Q: Can we achieve compliance with its (XML::XUpdate::LibXML) API? (just a subset ....)
43        
44    Q: Can we achieve the processing declared as a XSL document processed using CPAN's XML::XSLT?    Q: Can we achieve the processing declared as a XSL document processed using CPAN's XML::XSLT?
45        
# Line 43  Line 47 
47        
48    Q: Can we mimic/use the interface of the - already established - 'xupdate' program???    Q: Can we mimic/use the interface of the - already established - 'xupdate' program???
49        
50      Q: Should we follow the CRUD path first?
51      
52    
53  =cut  =cut
54    
# Line 101  References: Line 107  References:
107  <xsl:output method="raw"/>  <xsl:output method="raw"/>
108    
109  <!-- 0. The root node dispatcher. -->  <!-- 0. The root node dispatcher. -->
110  <xsl:template match="*"><xsl:call-template name="passthru"/></xsl:template>  <xsl:template match="*"><xsl:call-template name="passthru" /></xsl:template>
111  <!-- <xsl:template match="source"><xsl:call-template name="insertChildNode"/></xsl:template> -->  <xsl:template match="source"><xsl:call-template name="lock_context" /></xsl:template>
112    
113  <!-- 1. This is the passthru logic (copy all). -->  <!-- 1. This is the passthru logic (copy all). -->
114  <xsl:template name="passthru"><xsl:copy><xsl:apply-templates/></xsl:copy></xsl:template>  <xsl:template name="passthru"><xsl:copy><xsl:apply-templates /></xsl:copy></xsl:template>
115    
 <!-- 2. This is the manipulation logic: insertChildNode -->  
116    
117  <!-- 2.a. The "API" method. -->  <!-- 2. This is the crud API. -->
 <xsl:template name="insertChildNode">  
118    
119    <!-- manipulate node -->  <!-- 2.a. The context finder. -->
120    <xsl:comment> node - begin </xsl:comment>  
121      <xsl:template name="lock_context">
122    <!-- <xsl:copy-of select="source" /> -->    <xsl:choose>
   <xsl:copy>  
123            
124      <!-- Pass through children 1:1. -->      <xsl:when test="@key=expekt">
125      <xsl:apply-templates />        <xsl:call-template name="inject_kay_motl" />
126        </xsl:when>
127            
128      <!-- Call one of the manipulators - this implements injection behavior. -->      <xsl:otherwise>
129      <xsl:call-template name="clone_last_element" />        <xsl:call-template name="passthru_kay" />
130      <xsl:call-template name="inject_template" />      </xsl:otherwise>
131          
132    </xsl:copy>    </xsl:choose>
   <xsl:comment> node - end </xsl:comment>  
     
133  </xsl:template>  </xsl:template>
134    
135    
136  <!-- 2.b. The context finder. -->  <!-- 2.b. The node manipulators: They translate the current context. -->
137    
138    <!-- by Mike Kay, Software AG [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] -->
139    <!-- enhancements & comments: Andreas Motl, rotamente.de -->
140    <!-- <xsl:template match="source"> -->
141    <xsl:template name="passthru_kay">
142          <xsl:copy>
143            <xsl:copy-of select="@*" />
144            <xsl:apply-templates />
145          </xsl:copy>  
146    </xsl:template>
147    
148    <xsl:template name="inject_kay_motl">
149          <xsl:copy>
150            <xsl:copy-of select="@*" />
151            <xsl:apply-templates />
152            <!-- <xsl:apply-templates select="*[3]" /> -->
153            <!-- <xsl:value-of select="text()" /> -->
154            <!-- Multiple handlers here now: a) create fressshhhh element, b) clone s.th. -->
155            <!-- TODO: Do switch/case or couple of if/then statements here to be able to handle that "at runtime". -->
156            <xsl:call-template name="create_fresh_element" />
157            <xsl:call-template name="clone_last_element" />
158            <xsl:call-template name="clone_element_nr" />
159          </xsl:copy>  
160    </xsl:template>
161    
162    
163  <!-- 2.c. The node manipulators: They mungle the current context. -->  
164    <!-- 2.c. The element manipulators: They mungle a specific element inside the current context. -->
165    
166  <!-- copy over node 1:1 (use last element as a template) -->  <!-- copy over node 1:1 (use last element as a template) -->
167  <xsl:template name="clone_last_element">  <xsl:template name="clone_last_element">
# Line 141  References: Line 169  References:
169  </xsl:template>  </xsl:template>
170    
171  <xsl:template name="clone_element_nr">  <xsl:template name="clone_element_nr">
172    <xsl:copy-of select="*[last()]" />    <!-- TODO: let idx be passed in via "with-param" or s.th.l.th. -->
173      <xsl:copy-of select="*[2]" />
174  </xsl:template>  </xsl:template>
175    
176  <!-- creates instance of new element -->  <!-- creates instance of new element -->
# Line 157  References: Line 186  References:
186  </xsl:template>  </xsl:template>
187    
188    
 <!-- Fine stuff from others. -->  
189    
190  <!-- by Mike Kay, Software AG [http://p2p.wrox.com/archive/xslt/2001-06/98.asp] -->  
191  <!-- enhancements & comments: Andreas Motl, rotamente.de -->  <!-- 0. The root node dispatcher. -->
192  <xsl:template match="source">  <!-- <xsl:template match="source"><xsl:call-template name="insertChildNode"/></xsl:template> -->
193    
194    <!-- 2. This is the manipulation logic: insertChildNode -->
195    
196    <!-- 2.a. The "API" method. - now deprecated -->
197    <xsl:template name="insertChildNode">
198    
199      <!-- manipulate node -->
200      <xsl:comment> node - begin </xsl:comment>
201      
202      <!-- <xsl:copy-of select="source" /> -->
203    <xsl:copy>    <xsl:copy>
204      <xsl:copy-of select="@*" />      
205        <!-- Pass through children 1:1. -->
206      <xsl:apply-templates />      <xsl:apply-templates />
207      <!-- multiple handlers here now: a) create fressshhhh element, b) clone s.th. -->      
208      <!-- TODO: Do switch/case or couple of if/then statements here to be able to handle that "at runtime". -->      <!-- Call one of the manipulators - this implements injection behavior. -->
     <xsl:call-template name="create_fresh_element" />  
209      <xsl:call-template name="clone_last_element" />      <xsl:call-template name="clone_last_element" />
210    </xsl:copy>        <xsl:call-template name="inject_template" />
211      
212      </xsl:copy>
213      <xsl:comment> node - end </xsl:comment>
214      
215  </xsl:template>  </xsl:template>
216    
217    
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