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(Perl) XML Exclusive CanonicalizationDemonstrates how to convert XML to the Exclusive XML Canonicalization form as specified in http://www.w3.org/TR/xml-exc-c14n/
use chilkat(); # 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. $http = chilkat::CkHttp->new(); $sbXml = chilkat::CkStringBuilder->new(); $canon = chilkat::CkXmlDSig->new(); # Use exclusive XML canonicalization. $canonVersion = "EXCL_C14N"; $withComments = 0; $div1 = "--------------- input ---------------"; $div2 = "--------------- canonicalized output ---------------"; $sbUrl = chilkat::CkStringBuilder->new(); $i = 1; while ($i < 20) { $sbUrl->SetString("https://www.chilkatsoft.com/exampleData/c14n/testTESTNUMBER.xml"); $numReplaced = $sbUrl->ReplaceI("TESTNUMBER",$i); $success = $http->QuickGetSb($sbUrl->getAsString(),$sbXml); if ($success == 1) { $xmlCanon = $canon->canonicalizeXml($sbXml->getAsString(),$canonVersion,$withComments); print "---- Test " . $i . " ----" . "\r\n"; print $div1 . "\r\n"; print $sbXml->getAsString() . "\r\n"; print $div2 . "\r\n"; print $xmlCanon . "\r\n"; print " " . "\r\n"; } $i = $i + 1; } # 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
 Second line</text> # <value>2</value> # <compute><![CDATA[value>"0" && value<"10" ?"valid":"error"]]></compute> # <compute expr='value>"0" && value<"10" ?"valid":"error"'>valid</compute> # <norm attr=' '   
	 ' '/> # <normNames attr=' A   
	 B '/> # <normId id=' '   
	 ' '/> # </doc> # # --------------- canonicalized output --------------- # <doc> # <text>First line
 # Second line</text> # <value>2</value> # <compute>value>"0" && value<"10" ?"valid":"error"</compute> # <compute expr="value>"0" && value<"10" ?"valid":"error"">valid</compute> # <norm attr=" ' 
	 ' "></norm> # <normNames attr="A 
	 B"></normNames> # <normId id="' 
	 '"></normId> # </doc> # # ---- Test 5 ---- # --------------- input --------------- # <doc> # <lizard type="gecko & african" abc="& test "" /> # <snake type="poisonous rattler" /> # </doc> # # --------------- canonicalized output --------------- # <doc> # <lizard abc="& test "" type="gecko & 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 " "> # <!ENTITY author "Donald Duck"> # <!ENTITY writer "Writer: &author;."> # <!ENTITY copyright "Copyright: < > 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   á & < > ' " " ' ></to> # <from eTest="&   á < > > ' ' " ">Jani</from> # <heading myEntityTest="&myEntityA;">Reminder</heading> # <body>Don't forget me this weekend!</body> # <footer>&writer; ©right;</footer> # <footer print="no">&writer; ©right;</footer> # <someCData><![CDATA[ # & < > ' " # " ' & < > # This is a test. # ]]></someCData> # <someText> # & < > ' " # " ' > # This is a test. # </someText> # </note> # --------------- canonicalized output --------------- # <note> # <OPTIONS ADAPTER="Included" CASE="HardShell" FINISH="Matte"></OPTIONS> # <to>Tove & < > ' " " ' ></to> # <from eTest="& < > > ' ' " ">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: < > Chilkat.</footer> # <footer print="no" sort="true">Writer: Donald Duck.Copyright: < > Chilkat.</footer> # <someCData> # &amp; &lt; &gt; &apos; &quot; # " ' & < > # This is a test. # </someCData> # <someText> # & < > ' " # " ' > # This is a test. # </someText> # </note> # # ---- Test 11 ---- # --------------- input --------------- # <?xml version="1.0" encoding="UTF-8"?> # # <!DOCTYPE note [ # <!ENTITY nbsp " "> # <!ENTITY writer "Writer: Donald Duck."> # <!ENTITY copyright "Copyright: < > 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; ©right;</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: < > 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> # # |
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