traversing in parsed xml document

naveenisback · 07-16-2009, 02:26 AM

Hi to all,

I parsed following xml document using libxml2 parser

<Currentpowersettings>
<PowerScheme>Working</PowerScheme>
<CPUSpeed>Adaptive</CPUSpeed>
<Screensaver>Yes</Screensaver>
<LockScreentime>3</LockScreentime>
<Wbrightvalue>90</Wbrightvalue>
<Ibrightvalue>0</Ibrightvalue>
<Dimtime>3</Dimtime>
<Monitortime>5</Monitortime>
<Standby>5</Standby>
<Hibernatetime>720</Hibernatetime>
<HardDiskTimeout>3</HardDiskTimeout>
<Logofftime>600</Logofftime>
<Shutdowntime>0</Shutdowntime>
<ShutdownFlag>No</ShutdownFlag>
<OpenOfficeFlag>Yes</OpenOfficeFlag>
<DownloadsFlag>Yes</DownloadsFlag>
<PlayersFlag>No</PlayersFlag>
<OutLookFlag>No</OutLookFlag>
<VMWareFlag>No</VMWareFlag>
<PPasswordprotected>No</PPasswordprotected>
</Currentpowersettings>

i got a structure like this :
(just i fetched text contents)

Working
Adaptive
Yes
3
90
0
3
5
600
0
NO
YES
Yes
No

the important thing is i have to compare and validate each field. i can do this using lessthan 21 'if' statements. but i have a xml document more than 500 lines. i cant use 500 'if' statements in my program. can anybody suggest me an efficient logic to avoid 'statements'. even i tried with switch-case method, it didnt work. any search algorithm to reduce code memory.

Wim Sturkenboom · 07-16-2009, 08:59 AM

I would create something like a template (either in code or read from a file) and compare the content of the template with the xml file that you have parsed.

I'm not familiar with libxml, if your result is in an hashed array and your template as well you can do something like in below (some kind of just invented pseudo code)

Code:

set fail false
foreach element in template
{
    if {data[element]!=template[element]} {
        set fail true
    }
}
return fail