DOM Archives - icodebroker

[PYTHON/COMMON] 도서 관리 프로그램 만들기 (XML 버전)

■ 도서 관리 프로그램을 만드는 방법을 보여준다. ▶ book.xml


<?xml version="1.0" ?>
<booklist cnt="3">
    <book ISBN="0399250395">
        <title>The Very Hungry Caterpillar Pop-Up Book</title>
        <author name="Eric Carle"  />
        <author name="Keith Finch" />
        <publisher> Philomel Books</publisher>
        <description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>
    </book>
    <book ISBN="0964729237">
        <title lang="english">The Shack</title>
    </book>
    <book ISBN="0553281097">
        <title>You Can Negotiate Anything</title>
        <author name="Herb Cohen" />
        <category cid="12">Negotiate and narrative skill</category>
    </book>
</booklist>

<?xml version="1.0" ?>

<title>The Very Hungry Caterpillar Pop-Up Book</title>

<publisher> Philomel Books</publisher>

<description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>

</book>

<title lang="english">The Shack</title>

</book>

<title>You Can Negotiate Anything</title>

<category cid="12">Negotiate and narrative skill</category>

</book>

</booklist>

▶ main.py


import xml.dom.minidom
import xml.etree.ElementTree

##################################################
# 전역 변수
##################################################

loopFlag = 1

fileDescriptor = -1

document = None

##################################################
# 공통
##################################################

def PrintMenu():
    print()
    print("==================================================")
    print("도서 관리 프로그램 메뉴")
    print("==================================================")
    print("[l] XML 파일 로드하기"   )
    print("[p] XML 출력하기"        )
    print("[b] 도서명 목록 출력하기")
    print("[a] 새 도서 추가하기"    )
    print("[e] 도서명 검색하기"     )
    print("[m] HTML 출력하기"       )
    print("[q] 프로그램 종료하기"   )
    print("==================================================")

def ExecuteFunction(menuKey):
    global document
    if menuKey == "l":
        document = LoadXMLFile()
    elif menuKey == "p":
        PrintXML()
    elif menuKey == "b":
        PrintBookTitleList()
    elif menuKey == "a":
        print()
        newISBN  = str(input("IBSN 코드를 입력해 주시기 바랍니다 : "))
        newTitle = str(input("도서명을 입력해 주시기 바랍니다 : "   ))
        AddBook({"ISBN" : newISBN, "title" : newTitle})
    elif menuKey == 'e':
        print()
        keyword = str(input("검색할 도서명 키워드를 입력해 주시기 바랍니다 : "))
        print()
        PrintBookList(GetBookTupleList(keyword))
    elif menuKey == 'm':
        print()
        keyword = str(input ("HTML 출력을 위한 도서명 키워드를 입력해 주시기 바라니다 : "))
        print()
        html = GetHTML(GetBookTupleList(keyword))
        print("========================================")
        print(html)
        print("========================================")
    elif menuKey == 'q':
        ExitApplication()
    else:
        print ("에러 : 알 수 없는 메뉴 키를 입력하셨습니다!")

def CheckDocument():
    global document
    if document == None:
        print("에러 : 도큐먼트가 설정되지 않았습니다!")
        return False
    return True

##################################################
# XML 파일 로드하기
##################################################

def LoadXMLFile():
    print()
    filePath = str(input("XML 파일 경로를 입력해 주시기 바랍니다 : "))
    global fileDescriptor
    print()
    try:
        fileDescriptor = open(filePath)
    except IOError:
        print("파일명 또는 경로가 적절하지 않습니다.")
        return None
    else:
        try:
            document = xml.dom.minidom.parse(fileDescriptor)
        except Exception:
            print("파일 로딩시 에러가 발생했습니다.")
        else:
            print("XML 파일을 로드했습니다.")
            return document
    return None

##################################################
# XML 출력하기
##################################################

def PrintXML():
    if CheckDocument():
        print()
        print("========================================")
        print(document.toxml())
        print("========================================")

##################################################
# 도서명 목록 출력하기
##################################################

def PrintBookTitleList():
    global document
    if not CheckDocument():
        return None
    print()
    booklistElement = document.childNodes[0]
    for node in booklistElement.childNodes:
        if node.nodeName == "book":
            for childNode in node.childNodes:
                if childNode.nodeName == "title":
                    print("도서명 :", childNode.firstChild.nodeValue)

##################################################
# 새 도서 추가하기
##################################################

def AddBook(bookDictionary):
    global document

    if not CheckDocument() :
        return None

    bookElement = document.createElement("book")

    bookElement.setAttribute("ISBN", bookDictionary["ISBN"])

    titleText = document.createTextNode(bookDictionary["title"])

    titleElement = document.createElement("title")

    titleElement.appendChild(titleText)

    bookElement.appendChild(titleElement)

    booklistElement = document.firstChild

    booklistElement.appendChild(bookElement)

##################################################
# 도서명 검색하기
##################################################

def GetBookTupleList(keyword):
    global document

    if not CheckDocument():
        return None

    try:
        elementTree = xml.etree.ElementTree.fromstring(str(document.toxml()))
    except Exception:
        print ("엘리먼트 트리 파싱시 에러 : XML 문서가 정확하지 않습니다!")
        return None

    bookTupleList = []

    bookElementIterator = elementTree.iter("book")

    for bookElement in bookElementIterator:
        titleElement = bookElement.find("title")
        if titleElement.text.find(keyword) >= 0:
            bookTupleList.append((bookElement.attrib["ISBN"], titleElement.text))

    return bookTupleList

def PrintBookList(bookTupleList):
    for bookTuple in bookTupleList:
        print(bookTuple)

##################################################
# HTML 출력하기
##################################################

def GetHTML(bookTupleList):
    domImplementation = xml.dom.minidom.getDOMImplementation()

    newDocument = domImplementation.createDocument(None, "html", None)

    headerElement = newDocument.createElement("header")

    rootElement = newDocument.documentElement

    rootElement.appendChild(headerElement)

    bodyElement = newDocument.createElement("body")

    for bookTuple in bookTupleList:

        bElement = newDocument.createElement("b")

        ibsnText = newDocument.createTextNode("ISBN : " + bookTuple[0])

        bElement.appendChild(ibsnText)

        bodyElement.appendChild(bElement)

        brElement = newDocument.createElement("br")

        bodyElement.appendChild(brElement)

        pElement = newDocument.createElement("p")

        titleText = newDocument.createTextNode("도서명 : " + bookTuple[1])

        pElement.appendChild(titleText)

        bodyElement.appendChild(pElement)
        bodyElement.appendChild(brElement)

    rootElement.appendChild(bodyElement)

    return newDocument.toxml()

##################################################
# 프로그램 종료하기
##################################################

def UnlinkDocument():
    global document
    if document != None:
        document.unlink()

def ExitApplication():
    global loopFlag
    loopFlag = 0
    UnlinkDocument()

##################################################
# 프로그램 종료하기
##################################################

if __name__ == "__main__":
    while(loopFlag > 0):
        PrintMenu()
        print()
        menuKey = str(input("메뉴를 선택해 주시기 바랍니다 : "))
        ExecuteFunction(menuKey)
    else:
        print()
        print("프로그램을 종료합니다.")
        print()

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import xml.dom.minidom

import xml.etree.ElementTree

##################################################

# 전역 변수

##################################################

loopFlag = 1

fileDescriptor = -1

document = None

##################################################

# 공통

##################################################

def PrintMenu():

print()

print("==================================================")

print("도서 관리 프로그램 메뉴")

print("==================================================")

print("[l] XML 파일 로드하기" )

print("[p] XML 출력하기" )

print("[b] 도서명 목록 출력하기")

print("[a] 새 도서 추가하기" )

print("[e] 도서명 검색하기" )

print("[m] HTML 출력하기" )

print("[q] 프로그램 종료하기" )

print("==================================================")

def ExecuteFunction(menuKey):

global document

if menuKey == "l":

document = LoadXMLFile()

elif menuKey == "p":

PrintXML()

elif menuKey == "b":

PrintBookTitleList()

elif menuKey == "a":

print()

newISBN = str(input("IBSN 코드를 입력해 주시기 바랍니다 : "))

newTitle = str(input("도서명을 입력해 주시기 바랍니다 : " ))

AddBook({"ISBN" : newISBN, "title" : newTitle})

elif menuKey == 'e':

print()

keyword = str(input("검색할 도서명 키워드를 입력해 주시기 바랍니다 : "))

print()

PrintBookList(GetBookTupleList(keyword))

elif menuKey == 'm':

print()

keyword = str(input ("HTML 출력을 위한 도서명 키워드를 입력해 주시기 바라니다 : "))

print()

html = GetHTML(GetBookTupleList(keyword))

print("========================================")

print(html)

print("========================================")

elif menuKey == 'q':

ExitApplication()

else:

print ("에러 : 알 수 없는 메뉴 키를 입력하셨습니다!")

def CheckDocument():

global document

if document == None:

print("에러 : 도큐먼트가 설정되지 않았습니다!")

return False

return True

##################################################

# XML 파일 로드하기

##################################################

def LoadXMLFile():

print()

filePath = str(input("XML 파일 경로를 입력해 주시기 바랍니다 : "))

global fileDescriptor

print()

try:

fileDescriptor = open(filePath)

except IOError:

print("파일명 또는 경로가 적절하지 않습니다.")

return None

else:

try:

document = xml.dom.minidom.parse(fileDescriptor)

except Exception:

print("파일 로딩시 에러가 발생했습니다.")

else:

print("XML 파일을 로드했습니다.")

return document

return None

##################################################

# XML 출력하기

##################################################

def PrintXML():

if CheckDocument():

print()

print("========================================")

print(document.toxml())

print("========================================")

##################################################

# 도서명 목록 출력하기

##################################################

def PrintBookTitleList():

global document

if not CheckDocument():

return None

print()

booklistElement = document.childNodes[0]

for node in booklistElement.childNodes:

if node.nodeName == "book":

for childNode in node.childNodes:

if childNode.nodeName == "title":

print("도서명 :", childNode.firstChild.nodeValue)

##################################################

# 새 도서 추가하기

##################################################

def AddBook(bookDictionary):

global document

if not CheckDocument() :

return None

bookElement = document.createElement("book")

bookElement.setAttribute("ISBN", bookDictionary["ISBN"])

titleText = document.createTextNode(bookDictionary["title"])

titleElement = document.createElement("title")

titleElement.appendChild(titleText)

bookElement.appendChild(titleElement)

booklistElement = document.firstChild

booklistElement.appendChild(bookElement)

##################################################

# 도서명 검색하기

##################################################

def GetBookTupleList(keyword):

global document

if not CheckDocument():

return None

try:

elementTree = xml.etree.ElementTree.fromstring(str(document.toxml()))

except Exception:

print ("엘리먼트 트리 파싱시 에러 : XML 문서가 정확하지 않습니다!")

return None

bookTupleList = []

bookElementIterator = elementTree.iter("book")

for bookElement in bookElementIterator:

titleElement = bookElement.find("title")

if titleElement.text.find(keyword) >= 0:

bookTupleList.append((bookElement.attrib["ISBN"], titleElement.text))

return bookTupleList

def PrintBookList(bookTupleList):

for bookTuple in bookTupleList:

print(bookTuple)

##################################################

# HTML 출력하기

##################################################

def GetHTML(bookTupleList):

domImplementation = xml.dom.minidom.getDOMImplementation()

newDocument = domImplementation.createDocument(None, "html", None)

headerElement = newDocument.createElement("header")

rootElement = newDocument.documentElement

rootElement.appendChild(headerElement)

bodyElement = newDocument.createElement("body")

for bookTuple in bookTupleList:

bElement = newDocument.createElement("b")

ibsnText = newDocument.createTextNode("ISBN : " + bookTuple[0])

bElement.appendChild(ibsnText)

bodyElement.appendChild(bElement)

brElement = newDocument.createElement("br")

bodyElement.appendChild(brElement)

pElement = newDocument.createElement("p")

titleText = newDocument.createTextNode("도서명 : " + bookTuple[1])

pElement.appendChild(titleText)

bodyElement.appendChild(pElement)

bodyElement.appendChild(brElement)

rootElement.appendChild(bodyElement)

return newDocument.toxml()

##################################################

# 프로그램 종료하기

##################################################

def UnlinkDocument():

global document

if document != None:

document.unlink()

def ExitApplication():

global loopFlag

loopFlag = 0

UnlinkDocument()

##################################################

# 프로그램 종료하기

##################################################

if __name__ == "__main__":

while(loopFlag > 0):

PrintMenu()

print()

menuKey = str(input("메뉴를 선택해 주시기 바랍니다 : "))

ExecuteFunction(menuKey)

else:

print()

print("프로그램을 종료합니다.")

print()

TestProject.zip

[PYTHON/COMMON] Element 클래스 : appendChild 메소드를 사용해 자식 엘리먼트 추가하기

■ Element 클래스의 appendChild 메소드를 사용해 자식 엘리먼트를 추가하는 방법을 보여준다. ▶ book.xml


<?xml version="1.0" ?>
<booklist cnt="3">
    <book ISBN="0399250395">
        <title>The Very Hungry Caterpillar Pop-Up Book</title>
        <author name="Eric Carle"  />
        <author name="Keith Finch" />
        <publisher> Philomel Books</publisher>
        <description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>
    </book>
    <book ISBN="0964729237">
        <title lang="english">The Shack</title>
    </book>
    <book ISBN="0553281097">
        <title>You Can Negotiate Anything</title>
        <author name="Herb Cohen" />
        <category cid="12">Negotiate and narrative skill</category>
    </book>
</booklist>

<?xml version="1.0" ?>

<title>The Very Hungry Caterpillar Pop-Up Book</title>

<publisher> Philomel Books</publisher>

<description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>

</book>

<title lang="english">The Shack</title>

</book>

<title>You Can Negotiate Anything</title>

<category cid="12">Negotiate and narrative skill</category>

</book>

</booklist>

▶ main.py


import xml.dom.minidom

document = xml.dom.minidom.parse("book.xml")


titleElement = document.createElement("title")

titleText = document.createTextNode("파이썬 3.6 프로그래밍")

titleElement.appendChild(titleText)


bookElement = document.createElement("book")

bookElement.setAttribute("ISBN", "979-11-5839-071-6")

bookElement.appendChild(titleElement)


booklistElement = document.firstChild

booklistElement.appendChild(bookElement)


lastBookElement = booklistElement.childNodes[booklistElement.childNodes.length - 1]

print(lastBookElement.attributes["ISBN"].value)
print(lastBookElement.childNodes[0].childNodes[0].data)

"""
979-11-5839-071-6
파이썬 3.6 프로그래밍
"""

import xml.dom.minidom

document = xml.dom.minidom.parse("book.xml")

titleElement = document.createElement("title")

titleText = document.createTextNode("파이썬 3.6 프로그래밍")

titleElement.appendChild(titleText)

bookElement = document.createElement("book")

bookElement.setAttribute("ISBN", "979-11-5839-071-6")

bookElement.appendChild(titleElement)

booklistElement = document.firstChild

booklistElement.appendChild(bookElement)

lastBookElement = booklistElement.childNodes[booklistElement.childNodes.length - 1]

print(lastBookElement.attributes["ISBN"].value)

print(lastBookElement.childNodes[0].childNodes[0].data)

"""

979-11-5839-071-6

파이썬 3.6 프로그래밍

"""

TestProject.zip

[PYTHON/COMMON] XML 노드 순회하기

■ XML 노드를 순회하는 방법을 보여준다. ▶ 예제 코드 (PY)


import xml.dom.minidom

def GetNodeTypeName(nodeType):
    if nodeType == 1:
        return "ELEMENT"
    elif nodeType == 2:
        return "ATTRIBUTE"
    elif nodeType == 3:
        return "TEXT"
    elif nodeType == 4:
        return "CDATA SECTION"
    elif nodeType == 5:
        return "ENTITY"
    elif nodeType == 6:
        return "PROCESSING INSTRUCTION"
    elif nodeType == 7:
        return "COMMENT"
    elif nodeType == 8:
        return "DOCUMENT"
    elif nodeType == 9:
        return "DOCUMENT TYPE"
    else:
        return "NOTATION"

def PrintNode(parentNode, level):
    if parentNode.nodeType == 3:
        return

    if level == 0:
        indent = ""
    else:
        indent = " " * level * 4

    print("{0}{1} ({2})".format(indent, parentNode.nodeName, GetNodeTypeName(parentNode.nodeType)))

    for childNode in parentNode.childNodes:
        if childNode.nodeType == 3:
            continue
        PrintNode(childNode, level + 1)

document = xml.dom.minidom.parse("book.xml")

for childNode in document.childNodes:
    PrintNode(childNode, 0)

import xml.dom.minidom

def GetNodeTypeName(nodeType):

if nodeType == 1:

return "ELEMENT"

elif nodeType == 2:

return "ATTRIBUTE"

elif nodeType == 3:

return "TEXT"

elif nodeType == 4:

return "CDATA SECTION"

elif nodeType == 5:

return "ENTITY"

elif nodeType == 6:

return "PROCESSING INSTRUCTION"

elif nodeType == 7:

return "COMMENT"

elif nodeType == 8:

return "DOCUMENT"

elif nodeType == 9:

return "DOCUMENT TYPE"

else:

return "NOTATION"

def PrintNode(parentNode, level):

if parentNode.nodeType == 3:

return

if level == 0:

indent = ""

else:

indent = " " * level * 4

print("{0}{1} ({2})".format(indent, parentNode.nodeName, GetNodeTypeName(parentNode.nodeType)))

for childNode in parentNode.childNodes:

if childNode.nodeType == 3:

continue

PrintNode(childNode, level + 1)

document = xml.dom.minidom.parse("book.xml")

for childNode in document.childNodes:

PrintNode(childNode, 0)

book.zip

[PYTHON/COMMON] parse 함수 : XML 파일 로드하기

■ parse 함수를 사용해 XML 파일을 로드하는 방법을 보여준다. ▶ 예제 코드 (PY)


import xml.dom.minidom

document = xml.dom.minidom.parse("book.xml")

print(document.toxml())

"""
<?xml version="1.0" ?><booklist cnt="3">
    <book ISBN="0399250395">
        <title>The Very Hungry Caterpillar Pop-Up Book</title>
        <author name="Eric Carle"/>
        <author name="Keith Finch"/>
        <publisher> Philomel Books</publisher>
        <description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>
    </book>
    <book ISBN="0964729237">
        <title lang="english">The Shack</title>
    </book>
    <book ISBN="0553281097">
        <title>You Can Negotiate Anything</title>
        <author name="Herb Cohen"/>
        <category cid="12">Negotiate and narrative skill</category>
    </book>
</booklist>
"""

import xml.dom.minidom

document = xml.dom.minidom.parse("book.xml")

print(document.toxml())

"""

<?xml version="1.0" ?><booklist cnt="3">

<title>The Very Hungry Caterpillar Pop-Up Book</title>

<publisher> Philomel Books</publisher>

<description> Celebrating the 40th anniverary of one of the most popular children's books ever created</description>

</book>

<title lang="english">The Shack</title>

</book>

<title>You Can Negotiate Anything</title>

<category cid="12">Negotiate and narrative skill</category>

</book>

</booklist>

"""

book.zip

[PYTHON/COMMON] Document 클래스 : getElementsByTagName 메소드를 사용해 태그명에 일치하는 엘리먼트 리스트 구하기

■ Document 클래스의 getElementsByTagName 메소드를 사용해 태그명에 일치하는 엘리먼트 리스트를 구하는 방법을 보여준다. ▶ 예제 코드 (PY)


import xml.dom.minidom

xmlString = """
<item>
    <name>test</name>
</item>
"""

document = xml.dom.minidom.parseString(xmlString)

nodeList = document.getElementsByTagName("name")

print(nodeList)

"""
[<DOM Element: name at 0x1aca41136d0>]
"""

import xml.dom.minidom

xmlString = """

<item>

</item>

"""

document = xml.dom.minidom.parseString(xmlString)

nodeList = document.getElementsByTagName("name")

print(nodeList)

"""

[<DOM Element: name at 0x1aca41136d0>]

"""

[PYTHON/COMMON] parseString 함수 : XML 문자열 파싱하기

■ parseString 함수를 사용해 XML 문자열을 파싱하는 방법을 보여준다. ▶ 예제 코드 (PY)


import xml.dom.minidom

xmlString = """
<item>
    <name>test</name>
</item>
"""

document = xml.dom.minidom.parseString(xmlString)

print(document.toxml())

"""
<?xml version="1.0" ?><item>
    <name>test</name>
</item>
"""

import xml.dom.minidom

xmlString = """

<item>

</item>

"""

document = xml.dom.minidom.parseString(xmlString)

print(document.toxml())

"""

<?xml version="1.0" ?><item>

</item>

"""