extract the xml data values in the specified format using C++ code

[sankar999]

Hi All,

Please help me in writing the code for extracting the data values from the XML file using C++ code.
The xml file is as follows

<?xml version="1.0" encoding="utf-8"?>
<Settings xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 
  <!-- Configuration Type -->
  <CfgType>
    <Name>Ane Justin</Name>
    <MachineModels>
      <MachineModel>
        <ModelNo>2345678</ModelNo>        
        <MonitorTypes>          
          <MonitorType>
            <MonitorName>17" LCD</MonitorName>          
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>            
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>          
          <MonitorType>
            <MonitorName>19" LCD</MonitorName>            
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>            
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>          
          </MonitorType>          
        </MonitorTypes>        
      </MachineModel>
      <MachineModel>
        <ModelNo>0789456</ModelNo>
        <MonitorTypes>
          <MonitorType>
            <MonitorName>17" CRT</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
          <MonitorType>
            <MonitorName>19" CRT</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
        </MonitorTypes>
      </MachineModel>
    </MachineModels>
  </CfgType>
 
<CfgType>
    <Name>Jessica Sis</Name>
    <MachineModels>
      <MachineModel>
        <ModelNo>456789</ModelNo>
        <MonitorTypes>
          <MonitorType>
            <MonitorName>17" LCD</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
          <MonitorType>
            <MonitorName>19" LCD</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
        </MonitorTypes>
      </MachineModel>
      <MachineModel>
        <ModelNo>345678</ModelNo>
        <MonitorTypes>
          <MonitorType>
            <MonitorName>17" CRT</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
          <MonitorType>
            <MonitorName>19" CRT</MonitorName>
            <ScreenResolution>
              <Resolution>1024*768</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
            <ScreenResolution>
              <Resolution>800*600</Resolution>
              <RefreshRate>60</RefreshRate>
            </ScreenResolution>
          </MonitorType>
        </MonitorTypes>
      </MachineModel>
    </MachineModels>
  </CfgType>
</Settings>
 

From the above example xml, we can observe two types of "CfgType"(Ane Justin and Jessica Sis). Under each "CfgType" there are different "MachineModel" and under that "ModelNo" and followed by "ScreenResolution".

Now, the output should be shown as follows on the console window:

Ane Justin
 
  2345678
    17" LCD
      1024*768
      60
      800*600
      60    
    19" LCD
      1024*768
      60
      800*600
      60
 
  0789456
    17" LCD
      1024*768
      60
      800*600
      60    
    19" LCD
      1024*768
      60
      800*600
      60
 
Jessica Sis
 
  456789
    17" LCD
      1024*768
      60
      800*600
      60    
    19" LCD
      1024*768
      60
      800*600
      60
 
  345678
    17" LCD
      1024*768
      60
      800*600
      60    
    19" LCD
      1024*768
      60
      800*600
      60
 

Could some one please help me in showing the output as show above...
Many Thanks...

[jkmyoung]

One relatively easy way is to use xslt. The xslt file:

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format">
    <xsl:output method="text"/>
    <xsl:variable name="newline">
        <xsl:text>
</xsl:text>
    </xsl:variable>
    <xsl:template match="CfgType">
        <xsl:apply-templates select="Name"/>
        <xsl:value-of select="$newline"/>
        <xsl:apply-templates select="MachineModels/MachineModel"/>
    </xsl:template>
    <xsl:template match="MachineModel">
        <xsl:apply-templates/>
        <xsl:value-of select="$newline"/>
    </xsl:template>
    <xsl:template match="Name">
        <xsl:value-of select="."/>
        <xsl:value-of select="$newline"/>
    </xsl:template>
    <xsl:template match="MonitorType">
        <xsl:apply-templates/>
    </xsl:template>
    <xsl:template match="ModelNo">
        <xsl:text>  </xsl:text><xsl:value-of select="."/>
        <xsl:value-of select="$newline"/>
    </xsl:template>
    <xsl:template match="MonitorName">
        <xsl:text>    </xsl:text><xsl:value-of select="."/>
        <xsl:value-of select="$newline"/>
    </xsl:template>
    <xsl:template match="Resolution|RefreshRate">
        <xsl:text>      </xsl:text><xsl:value-of select="."/>
        <xsl:value-of select="$newline"/>
    </xsl:template>
</xsl:stylesheet>

This file can be run along with your source xml using xalan-c: http://xml.apache.org/xalan-c/