Чкадуа А. Основы XML.

mephi.dtd

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+<!ELEMENT university (faculty+)>
+<!ELEMENT faculty (department+)>
+<!ELEMENT department (group+)>
+<!ELEMENT group (student+)>
+<!ELEMENT student EMPTY>
+<!ATTLIST university 
+    name CDATA #REQUIRED 
+    found CDATA #IMPLIED
+>
+<!ATTLIST faculty name ID #REQUIRED>
+<!ATTLIST department number ID #REQUIRED>
+<!ATTLIST group number ID #REQUIRED>
+<!ATTLIST student name ID #REQUIRED>

mephi.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE note SYSTEM "mephi.dtd">
+<model xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:noNamespaceSchemaLocation="./mephi.xsd" >
+<university name="МИФИ" found="1942">
+	<faculty name="КиБ">
+		<department number="36">
+			<group name="К05-361">
+				<student name="Чкадуа Антон Витальевич"/>
+			</group>
+		</department>
+	</faculty>
+</university>

mephi.xsd

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+<?xml version="1.0"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+	<xs:complexType name="universityInfo">
+		<xs:attribute name="name" type="xs:string"/>
+		<xs:attribute name="found" type="xs:positiveInteger"/>
+	</xs:complexType>
+
+	<xs:complexType name="man">
+		<xs:attribute name="name" type="xs:string"/>
+		<
+	<xs:element name="university" type="universityInfo">
+		<xs:complexType>
+			<xs:element name="faculty">
+				<xs:attribute name="name" type="xs:string" use="required"/>
+				<xs:whitespace value="preserved"/>
+				<xs:complexType>
+					<xs:element name="department">
+						<xs:attribute name="number" type="xs:positiveInteger" use="required"/>
+						<xs:complexType>
+							<xs:element name="group">
+								<xs:attribute name="name" use="required"/>
+								<xs:complexType>
+									<xs:element name="student" minOccurs="0" maxOccurs="25">
+										<xs:attribute name="name"/>
+									</xs:element>
+								</xs:complexType>
+							</xs:element>
+						</xs:complexType>
+					</xs:element>
+				</xs:complexType>
+			</xs:element>
+		</xs:complexType>
+	</xs:element>
+</xs:schema>

schema_validator.py

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+#! /usr/bin/env python
+import sys, libxml2
+
+def schema_validate(xml_file, xsd_file):
+  ctxt = libxml2.schemaNewParserCtxt(xsd_file)
+  schema = ctxt.schemaParse()
+  validationCtxt = schema.schemaNewValidCtxt()
+  res = validationCtxt.schemaValidateFile(xml_file, 0)
+  doc = libxml2.parseFile(xml_file)
+  result = validationCtxt.schemaValidateDoc(doc)
+  doc.freeDoc()
+  if result != 0:
+    print "VALIDATION FAILED"
+  else:
+    print "VALIDATED"
+  return result
+
+if __name__ == ' __main__ ':
+  main(sys.argv)

xml_parser.py

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+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+import sys
+import libxml2
+
+def getPropValue(node,name):
+  for prop in node.properties:
+    if prop.type == 'attribute' and prop.name == 'name':
+      return prop.content  
+
+def main(argv):
+  if len(argv) != 2:
+    sys.stderr.write("Usage : %s xml_file" % (argv[0],))
+  else:
+    doc = libxml2.parseFile(argv[1])
+    university = doc.getRootElement()
+    print(getPropValue(university,'name'))
+    faculty = university.children
+    while faculty is not None:
+      if faculty.type == 'element':
+        print("  Факультет: " + getPropValue(faculty,'name'))
+        group = faculty.children
+        while department is not None:
+          if department.type == 'element':
+            print("    Кафедра №" + getPropValue(department,'name'))
+            group = department.children
+            while geoup is not None:
+              if group.type == 'element':
+                print("      Группа " + getPropValue(group,'name'))
+                student = group.children
+                while student is not None:
+                  if student.type == 'element':
+                    print("        " + getPropValue(student,'name'))
+                  student = student.next
+              group = group.next
+          department = department.next
+      faculty = faculty.next
+  doc.freeDoc()
+
+if __name__ == ' __main__ ':
+  main(sys.argv)

xml_validator.py

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+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+import sys
+import libxml2
+import optparse  
+
+def validate(xml_file, dtd_file):
+  doc = libxml2.parseFile(xml_file)
+  dtd = libxml2.parseDTD(None, dtd_file)
+  ctxt = libxml2.newValidCtxt()
+  ret = doc.validateDtd(ctxt, dtd)
+  dtd.freeDtd()
+  doc.freeDoc()
+  return ret
+
+def main():
+  op = optparse.OptionParser(description = U"Проверка на соответствие DTD",
+                             prog="dtd", version="0.1", usage=U"%prog")
+  op.add_option("-x", "--xml", dest="xml", help=U"XML документ", metavar="XML_FILE")
+  op.add_option("-d", "--dtd", dest="dtd", help=U"DTD документ", metavar="DTD_FILE")
+
+  options, arguments = op.parse_args()
+  if options.xml and options.dtd:
+    validate(options.xml, options.dtd)
+  else:
+    op.print_help()
+
+if __name__ == ' __main__ ':
+  main()