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(Visual FoxPro) XML Exclusive CanonicalizationDemonstrates how to convert XML to the Exclusive XML Canonicalization form as specified in http://www.w3.org/TR/xml-exc-c14n/
LOCAL loHttp LOCAL loSbXml LOCAL loCanon LOCAL lcCanonVersion LOCAL lnWithComments LOCAL lcDiv1 LOCAL lcDiv2 LOCAL lnSuccess LOCAL loSbUrl LOCAL i LOCAL lnNumReplaced LOCAL lcXmlCanon * 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. * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Http') loHttp = CreateObject('Chilkat.Http') * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder') loSbXml = CreateObject('Chilkat.StringBuilder') * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.XmlDSig') loCanon = CreateObject('Chilkat.XmlDSig') * Use exclusive XML canonicalization. lcCanonVersion = "EXCL_C14N" lnWithComments = 0 lcDiv1 = "--------------- input ---------------" lcDiv2 = "--------------- canonicalized output ---------------" * For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.StringBuilder') loSbUrl = CreateObject('Chilkat.StringBuilder') i = 1 DO WHILE i < 20 loSbUrl.SetString("https://www.chilkatsoft.com/exampleData/c14n/testTESTNUMBER.xml") lnNumReplaced = loSbUrl.ReplaceI("TESTNUMBER",i) lnSuccess = loHttp.QuickGetSb(loSbUrl.GetAsString(),loSbXml) IF (lnSuccess = 1) THEN lcXmlCanon = loCanon.CanonicalizeXml(loSbXml.GetAsString(),lcCanonVersion,lnWithComments) ? "---- Test " + STR(i) + " ----" ? lcDiv1 ? loSbXml.GetAsString() ? lcDiv2 ? lcXmlCanon ? " " ENDIF i = i + 1 ENDDO * 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> * * RELEASE loHttp RELEASE loSbXml RELEASE loCanon RELEASE loSbUrl |
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