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(DataFlex) XML Exclusive Canonicalization

Demonstrates how to convert XML to the Exclusive XML Canonicalization form as specified in http://www.w3.org/TR/xml-exc-c14n/

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoHttp
    Variant vSbXml
    Handle hoSbXml
    Handle hoCanon
    String sCanonVersion
    Boolean iWithComments
    String sDiv1
    String sDiv2
    Boolean iSuccess
    Handle hoSbUrl
    Integer i
    Integer iNumReplaced
    String sXmlCanon
    String sTemp1

    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    //  The XML digital signature verification class provides utility methods for
    //  XML canonicalization.  This example demonstrates how to do exclusive XML canonicalization.

    //  This example will show many sample XML inputs and outputs.  The input XML files are available online
    //  as shown in this example.

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbXml
    If (Not(IsComObjectCreated(hoSbXml))) Begin
        Send CreateComObject of hoSbXml
    End
    Get Create (RefClass(cComChilkatXmlDSig)) To hoCanon
    If (Not(IsComObjectCreated(hoCanon))) Begin
        Send CreateComObject of hoCanon
    End

    //  Use exclusive XML canonicalization.
    Move "EXCL_C14N" To sCanonVersion
    Move False To iWithComments

    Move "--------------- input ---------------" To sDiv1
    Move "--------------- canonicalized output ---------------" To sDiv2

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbUrl
    If (Not(IsComObjectCreated(hoSbUrl))) Begin
        Send CreateComObject of hoSbUrl
    End

    Move 1 To i
    While (i < 20)
        Get ComSetString Of hoSbUrl "https://www.chilkatsoft.com/exampleData/c14n/testTESTNUMBER.xml" To iSuccess
        Get ComReplaceI Of hoSbUrl "TESTNUMBER" i To iNumReplaced

        Get ComGetAsString Of hoSbUrl To sTemp1
        Get pvComObject of hoSbXml to vSbXml
        Get ComQuickGetSb Of hoHttp sTemp1 vSbXml To iSuccess
        If (iSuccess = True) Begin
            Get ComGetAsString Of hoSbXml To sTemp1
            Get ComCanonicalizeXml Of hoCanon sTemp1 sCanonVersion iWithComments To sXmlCanon

            Showln "---- Test " i " ----"
            Showln sDiv1
            Get ComGetAsString Of hoSbXml To sTemp1
            Showln sTemp1
            Showln sDiv2
            Showln sXmlCanon
            Showln " "
        End

        Move i + 1 To i
    Loop

    //  The output of this program is:

    // 
    //  ---- Test 1 ----
    //  --------------- input ---------------
    //  <?xml version="1.0"?>
    // 
    //  <?xml-stylesheet   href="doc.xsl"
    //     type="text/xsl"   ?>
    // 
    //  <!DOCTYPE doc SYSTEM "doc.dtd">
    // 
    //  <doc>Hello, world!<!-- Comment 1 --></doc>
    // 
    //  <?pi-without-data     ?>
    // 
    //  <!-- Comment 2 -->
    // 
    //  <!-- Comment 3 -->
    //  --------------- canonicalized output ---------------
    //  <?xml-stylesheet href="doc.xsl"
    //     type="text/xsl"   ?>
    //  <doc>Hello, world!</doc>
    //  <?pi-without-data?>
    // 
    //  ---- Test 2 ----
    //  --------------- input ---------------
    //  <?xml version="1.0"?>
    // 
    //  <?xml-stylesheet   href="doc.xsl"
    //     type="text/xsl"   ?>
    // 
    //  <doc>Hello, world!<fish name="goldie"   type = "goldfish"   color='gold'    /></doc>
    // 
    //  <?pi-without-data     ?>
    // 
    // 
    //  --------------- canonicalized output ---------------
    //  <?xml-stylesheet href="doc.xsl"
    //     type="text/xsl"   ?>
    //  <doc>Hello, world!<fish color="gold" name="goldie" type="goldfish"></fish></doc>
    //  <?pi-without-data?>
    // 
    //  ---- Test 3 ----
    //  --------------- input ---------------
    //  <doc>
    //     <clean>   </clean>
    //     <dirty>   A   B   </dirty>
    //     <mixed>
    //        A
    //        <clean>   </clean>
    //        B
    //        <dirty>   A   B   </dirty>
    //        C
    //     </mixed>
    //  </doc>
    //  --------------- canonicalized output ---------------
    //  <doc>
    //     <clean>   </clean>
    //     <dirty>   A   B   </dirty>
    //     <mixed>
    //        A
    //        <clean>   </clean>
    //        B
    //        <dirty>   A   B   </dirty>
    //        C
    //     </mixed>
    //  </doc>
    // 
    //  ---- Test 4 ----
    //  --------------- input ---------------
    //  <!DOCTYPE doc [
    //  <!ATTLIST normId id ID #IMPLIED>
    //  <!ATTLIST normNames attr NMTOKENS #IMPLIED>
    //  ]>
    //  <doc>
    //     <text>First line&#x0d;&#10;Second line</text>
    //     <value>&#x32;</value>
    //     <compute><![CDATA[value>"0" && value<"10" ?"valid":"error"]]></compute>
    //     <compute expr='value>"0" &amp;&amp; value&lt;"10" ?"valid":"error"'>valid</compute>
    //     <norm attr=' &apos;   &#x20;&#13;&#xa;&#9;   &apos; '/>
    //     <normNames attr='   A   &#x20;&#13;&#xa;&#9;   B   '/>
    //     <normId id=' &apos;   &#x20;&#13;&#xa;&#9;   &apos; '/>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //     <text>First line&#xD;
    //  Second line</text>
    //     <value>2</value>
    //     <compute>value&gt;"0" &amp;&amp; value&lt;"10" ?"valid":"error"</compute>
    //     <compute expr="value>&quot;0&quot; &amp;&amp; value&lt;&quot;10&quot; ?&quot;valid&quot;:&quot;error&quot;">valid</compute>
    //     <norm attr=" '    &#xD;&#xA;&#x9;   ' "></norm>
    //     <normNames attr="A &#xD;&#xA;&#x9; B"></normNames>
    //     <normId id="' &#xD;&#xA;&#x9; '"></normId>
    //  </doc>
    // 
    //  ---- Test 5 ----
    //  --------------- input ---------------
    //  <doc>
    //    <lizard type="gecko &amp; african" abc="&amp; test &quot;" />
    //    <snake type="poisonous rattler" />
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //    <lizard abc="&amp; test &quot;" type="gecko &amp; african"></lizard>
    //    <snake type="poisonous rattler"></snake>
    //  </doc>
    // 
    //  ---- Test 6 ----
    //  --------------- input ---------------
    //  <doc>
    //  <!-- A namespace node N is ignored if the nearest ancestor element of the node's parent element that is in the node-set has a namespace node in the node-set with the same local name and value as N. -->
    //  	<animal xmlns="" xmlns:aa="https://www.animal.com/">
    //  		<reptile xmlns:cc="https://www.herpetology.com/" xmlns:bb="https://www.reptile.com/">
    //    			<lizard type="african fat tailed" abc="xyz" xmlns:aa="https://www.animal.com/" />
    //    			<snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" >
    //    				<cobra bb:name="benny" />
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    // 
    //  	<animal>
    //  		<reptile>
    //    			<lizard abc="xyz" type="african fat tailed"></lizard>
    //    			<snake type="poisonous rattler">
    //    				<cobra xmlns:bb="https://www.reptile.com/" bb:name="benny"></cobra>
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  ---- Test 7 ----
    //  --------------- input ---------------
    //  <doc>
    //  <!-- A namespace node N is ignored if the nearest ancestor element of the node's parent element that is in the node-set has a namespace node in the node-set with the same local name and value as N. -->
    //  	<animal xmlns:aa="https://www.animal.com/">
    //  		<reptile xmlns:bb="https://www.reptile.com/">
    //    			<lizard xmlns="" type="african fat tailed" abc="xyz" xmlns:aa="https://www.animal.com/" />
    //    			<snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" >
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    // 
    //  	<animal>
    //  		<reptile>
    //    			<lizard abc="xyz" type="african fat tailed"></lizard>
    //    			<snake type="poisonous rattler">
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  ---- Test 8 ----
    //  --------------- input ---------------
    //  <doc>
    //  <!-- generate a space followed by xmlns="" if and only if the following conditions are met:
    // 
    //      the element E that owns the axis is in the node-set
    //      The nearest ancestor element of E in the node-set has a default namespace node in the node-set (default namespace nodes always have non-empty values in XPath)
    //   -->
    //  	<animal xmlns="https://www.animal.com/">
    //  		<reptile xmlns:bb="https://www.reptile.com/">
    //    			<lizard xmlns="" type="african fat tailed" abc="xyz" xmlns:bb="https://www.reptile222.com/" >
    //    				<myPet xmlns:bb="https://www.reptile.com/">larry</myPet>
    //    			</lizard>
    //    			<snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" >
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    // 
    //  	<animal xmlns="https://www.animal.com/">
    //  		<reptile>
    //    			<lizard xmlns="" abc="xyz" type="african fat tailed">
    //    				<myPet>larry</myPet>
    //    			</lizard>
    //    			<snake type="poisonous rattler">
    //    			</snake>
    //    		</reptile>
    //    	</animal>
    //  </doc>
    // 
    //  ---- Test 9 ----
    //  --------------- input ---------------
    //  <!DOCTYPE doc [<!ATTLIST e9 attr CDATA "default">]>
    //  <doc>
    //     <e1   />
    //     <e2   ></e2>
    //     <e3   name = "elem3"   id="elem3"   />
    //     <e4   name="elem4"   id="elem4"   ></e4>
    //     <e5 a:attr="out" b:attr="sorted" attr2="all" attr="I'm"
    //        xmlns:b="http://www.ietf.org"
    //        xmlns:a="http://www.w3.org"
    //        xmlns="http://example.org"/>
    //     <e6 xmlns="" xmlns:a="http://www.w3.org">
    //        <e7 xmlns="http://www.ietf.org">
    //           <e8 xmlns="" xmlns:a="http://www.w3.org">
    //              <e9 xmlns="" xmlns:a="http://www.ietf.org"/>
    //           </e8>
    //        </e7>
    //     </e6>
    //  </doc>
    //  --------------- canonicalized output ---------------
    //  <doc>
    //     <e1></e1>
    //     <e2></e2>
    //     <e3 id="elem3" name="elem3"></e3>
    //     <e4 id="elem4" name="elem4"></e4>
    //     <e5 xmlns="http://example.org" xmlns:a="http://www.w3.org" xmlns:b="http://www.ietf.org" attr="I'm" attr2="all" b:attr="sorted" a:attr="out"></e5>
    //     <e6>
    //        <e7 xmlns="http://www.ietf.org">
    //           <e8 xmlns="">
    //              <e9 attr="default"></e9>
    //           </e8>
    //        </e7>
    //     </e6>
    //  </doc>
    // 
    //  ---- Test 10 ----
    //  --------------- input ---------------
    //  <?xml version="1.0" encoding="UTF-8"?>
    // 
    //  <!DOCTYPE note [
    //  <!ENTITY nbsp "&#xA0;">
    //  <!ENTITY author "Donald Duck">
    //  <!ENTITY writer "Writer: &author;.">
    //  <!ENTITY copyright "Copyright: &lt; > Chilkat.">
    //  <!ATTLIST OPTIONS
    //  	FINISH (Metal|Polished|Matte) "Matte"
    //  	ADAPTER (Included|Optional|NotApplicable) "Included"
    //  	CASE (HardShell|Soft|NotApplicable) "HardShell">
    // 
    //  <!ATTLIST footer
    //     src    CDATA          #REQUIRED
    //     id     ID             #IMPLIED
    //     sort   CDATA          #FIXED "true"
    //     print  (yes | no) "yes"
    //  >
    //  <!ENTITY myEntityA "Some Entity Value A">
    //  <!ENTITY myEntityB "Some Entity Value B">
    //  ]>
    // 
    //  <note>
    //  <OPTIONS/>
    //  <to>Tove &#xA0; &#xE1; &amp; &lt; &gt; &apos; &quot; " ' ></to>
// <from eTest="&amp; &#xA0; &#xE1; &lt; > &gt; &apos; ' &quot; ">Jani</from>
    //  <heading myEntityTest="&myEntityA;">Reminder</heading>
    //  <body>Don't forget me this weekend!</body>
    //  <footer>&writer;&nbsp;&copyright;</footer>
    //  <footer print="no">&writer;&nbsp;&copyright;</footer>
    //     <someCData><![CDATA[
    //        &amp; &lt; &gt; &apos; &quot;
    //        " ' & < >
//       This is a test.
    //  ]]></someCData>
    //     <someText>
    //        &amp; &lt; &gt; &apos; &quot;
    //        " '   >
//       This is a test.
    //     </someText>
    //  </note>
    //  --------------- canonicalized output ---------------
    //  <note>
    //  <OPTIONS ADAPTER="Included" CASE="HardShell" FINISH="Matte"></OPTIONS>
    //  <to>Tove   &amp; &lt; &gt; ' " " ' &gt;</to>
//
    //  <from eTest="&amp;   &lt; > > ' ' &quot; ">Jani</from>
//
    //  <heading myEntityTest="Some Entity Value A">Reminder</heading>
    //  <body>Don't forget me this weekend!</body>
    //  <footer print="yes" sort="true">Writer: Donald Duck.Copyright: &lt; &gt; Chilkat.</footer>

    //  <footer print="no" sort="true">Writer: Donald Duck.Copyright: &lt; &gt; Chilkat.</footer>

    //     <someCData>
    //        &amp;amp; &amp;lt; &amp;gt; &amp;apos; &amp;quot;
    //        " ' &amp; &lt; &gt;
//       This is a test.
    //  </someCData>
    //     <someText>
    //        &amp; &lt; &gt; ' " 
//       " '   &gt;
//       This is a test.
    //     </someText>
    //  </note>
    // 
    //  ---- Test 11 ----
    //  --------------- input ---------------
    //  <?xml version="1.0" encoding="UTF-8"?>
    // 
    //  <!DOCTYPE note [
    //  <!ENTITY nbsp "&#xA0;">
    //  <!ENTITY writer "Writer: Donald Duck.">
    //  <!ENTITY copyright "Copyright: &lt; > Chilkat.">
    //  <!ATTLIST OPTIONS
    //  	FINISH (Metal|Polished|Matte) "Matte"
    //  	ADAPTER (Included|Optional|NotApplicable) "Included"
    //  	CASE (HardShell|Soft|NotApplicable) "HardShell">
    // 
    //  <!ATTLIST footer
    //     src    CDATA          #REQUIRED
    //     id     ID             #IMPLIED
    //     sort   CDATA          #FIXED "true"
    //     print  (yes | no) "yes"
    //  >
    //  <!ENTITY myEntityA "Some Entity Value A">
    //  <!ENTITY myEntityB "Some Entity Value B">
    // 
    //  <!ENTITY c SYSTEM "http://www.xmlwriter.net/copyright.xml">
    //  <!ENTITY c PUBLIC "-//W3C//TEXT copyright//EN"
    //   "http://www.w3.org/xmlspec/copyright.xml">
    // 
    //  <!ENTITY logo SYSTEM "http://www.xmlwriter.net/logo.gif" NDATA gif>
    //  <!ENTITY logo PUBLIC  "-//W3C//GIF logo//EN" "http://www.w3.org/logo.gif" NDATA gif>
    // 
    //  ]>
    // 
    //  <note>
    //  <OPTIONS/>
    //  <to>Tove</to>
    //  <from>Jani</from>
    //  <heading myEntityTest="&myEntityA;">Reminder</heading>
    //  <body>Don't forget me this weekend!</body>
    //  <footer>&writer;&nbsp;&copyright;</footer>
    //  </note>
    //  --------------- canonicalized output ---------------
    //  <note>
    //  <OPTIONS ADAPTER="Included" CASE="HardShell" FINISH="Matte"></OPTIONS>
    //  <to>Tove</to>
    //  <from>Jani</from>
    //  <heading myEntityTest="Some Entity Value A">Reminder</heading>
    //  <body>Don't forget me this weekend!</body>
    //  <footer print="yes" sort="true">Writer: Donald Duck.Copyright: &lt; &gt; Chilkat.</footer>

    //  </note>
    // 
    //  ---- Test 12 ----
    //  --------------- input ---------------
    //  <?xml version="1.0" encoding="UTF-8"?>
    //  <lizard  xml:space="retain" xml:lang="en">
    //  	<gecko />
    //  	<bearded_dragon xml:lang="en" xml:space="retain">pip</bearded_dragon>
    //  </lizard>
    // 
    //  --------------- canonicalized output ---------------
    //  <lizard xml:lang="en" xml:space="retain">
    //  	<gecko></gecko>
    //  	<bearded_dragon xml:lang="en" xml:space="retain">pip</bearded_dragon>
    //  </lizard>
    // 
    //  ---- Test 13 ----
    //  --------------- input ---------------
    //  <?xml version="1.0" encoding="UTF-8"?>
    //  <lizard  xmlns="http://www.chilkatsoft.com">
    //  	<gecko name="larry" />
    //  	<bearded_dragon  xmlns="http://www.beardies.com" name="pip">pip</bearded_dragon>
    //  </lizard>
    // 
    //  --------------- canonicalized output ---------------
    //  <lizard xmlns="http://www.chilkatsoft.com">
    //  	<gecko name="larry"></gecko>
    //  	<bearded_dragon xmlns="http://www.beardies.com" name="pip">pip</bearded_dragon>
    //  </lizard>
    // 
    //  ---- Test 14 ----
    //  --------------- input ---------------
    //  <doc>
    //  <a xmlns:aa="https://www.test1.org">
    //  <b xmlns:aa="https://www.test2.org">
    //  <c xmlns:aa="https://www.test1.org">
    //  <d xmlns:aa="https://www.test2.org">
    //  <e xmlns:aa="https://www.test1.org">
    //  </e>
    //  </d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //  <a>
    //  <b>
    //  <c>
    //  <d>
    //  <e>
    //  </e>
    //  </d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  ---- Test 15 ----
    //  --------------- input ---------------
    //  <doc>
    //  <a xmlns:aa="https://www.test1.org">
    //  <b xmlns:aa="https://www.test1.org">
    //  <c xmlns:aa="https://www.test1.org">
    //  <d xmlns:aa="https://www.test1.org">
    //  <e xmlns:aa="https://www.test1.org">
    //  </e>
    //  </d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //  <a>
    //  <b>
    //  <c>
    //  <d>
    //  <e>
    //  </e>
    //  </d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  ---- Test 16 ----
    //  --------------- input ---------------
    //  <doc>
    //  <a xmlns="">
    //  <b xmlns="">
    //  <c xmlns="https://www.chilkatsoft.com">
    //  <c2 xmlns="https://www.chilkatsoft.com">
    //  <d xmlns="">
    //  <e xmlns="">
    //  </e>
    //  </d>
    //  </c2>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //  <a>
    //  <b>
    //  <c xmlns="https://www.chilkatsoft.com">
    //  <c2>
    //  <d xmlns="">
    //  <e>
    //  </e>
    //  </d>
    //  </c2>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  ---- Test 17 ----
    //  --------------- input ---------------
    //  <doc>
    //  <a xmlns:aa="https://www.testA.com/" xmlns:zz="https://testZ.com" zz:color="blue" xmlns:yy="https://testY.com">
    //  <b xmlns="">
    //  <c xmlns:aa="https://www.testA.com/" aa:location="Chicago" xmlns:bb="https://www.testB.com/">
    //  <bb:d xmlns:aa="https://www.testAA.com/" aa:country="USA" yy:planet="Earth">
    //  </bb:d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //  <a xmlns:zz="https://testZ.com" zz:color="blue">
    //  <b>
    //  <c xmlns:aa="https://www.testA.com/" aa:location="Chicago">
    //  <bb:d xmlns:aa="https://www.testAA.com/" xmlns:bb="https://www.testB.com/" xmlns:yy="https://testY.com" yy:planet="Earth" aa:country="USA">
    //  </bb:d>
    //  </c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  ---- Test 18 ----
    //  --------------- input ---------------
    //  <doc>
    //  <a xmlns:aa="https://www.testA.com/" aa:location="Chicago">
    //  <b xmlns:aa="https://www.testA.com/"><!-- aa is not emitted here (using exclusive canon) -->
    //  <c xmlns:aa="https://www.testA.com/">test</c><!-- aa is not emitted here (using exclusive canon) -->
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    //  <a xmlns:aa="https://www.testA.com/" aa:location="Chicago">
    //  <b>
    //  <c>test</c>
    //  </b>
    //  </a>
    //  </doc>
    // 
    //  ---- Test 19 ----
    //  --------------- input ---------------
    //  <doc>
    //  <!-- generate a space followed by xmlns="" if and only if the following conditions are met:
    // 
    //      the element E that owns the axis is in the node-set
    //      The nearest ancestor element of E in the node-set has a default namespace node in the node-set (default namespace nodes always have non-empty values in XPath)
    //   -->
    //  	<animal xmlns:bb="https://www.reptile.com/">
    //  		<bb:reptile xmlns="https://www.animal.com/" bb:abc="123">
    //    			<lizard xmlns="" type="african fat tailed" abc="xyz" xmlns:bb="https://www.reptile222.com/" >
    //    				<myPet xmlns:bb="https://www.reptile.com/">larry</myPet>
    //    			</lizard>
    //    			<snake type="poisonous rattler" xmlns:bb="https://www.reptile.com/" >
    //    			</snake>
    //    		</bb:reptile>
    //    	</animal>
    //  </doc>
    // 
    //  --------------- canonicalized output ---------------
    //  <doc>
    // 
    //  	<animal>
    //  		<bb:reptile xmlns:bb="https://www.reptile.com/" bb:abc="123">
    //    			<lizard abc="xyz" type="african fat tailed">
    //    				<myPet>larry</myPet>
    //    			</lizard>
    //    			<snake xmlns="https://www.animal.com/" type="poisonous rattler">
    //    			</snake>
    //    		</bb:reptile>
    //    	</animal>
    //  </doc>
    // 
    // 


End_Procedure

 

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