VfpNameLookup
For my network checks I want to ping some computers to see if they’re still active on my network. But before that, I have to lookup the IP numbers for the network names. Found this TekTips article on NSlookup from VFP6 and built my own function around the example.
* Lookup an IP number connected to a netwerk name
* (C)2011 Jasper de Graaf for J.A. Software
* Source: https://degraafonline.com
* Inspiration from http://www.tek-tips.com/viewthread.cfm?qid=891380&page=338
LPARAMETERS tcLookup && name to lookup
* No parameter, wrong type or empty
IF PCOUNT()=0 OR !VARTYPE(tcLookup)=[C] OR EMPTY(tcLookup)
? [nslookup needs character parameter lookup network name or ip number]
RETURN []
ENDIF
* create scripting shell object and test
loShell = CreateObject("WScript.Shell")
IF VARTYPE(loShell)<>[O]
? [did not succeed in creating Wscript.Shell object]
RETURN []
ENDIF
* perform lookup and get results
loScriptExec = loShell.Exec("nslookup -debug "+tcLookup)
lcNsLookup = loScriptExec.StdOut.ReadAll()
IF AT([ANSWERS],lcNsLookup,2)>0 && we got a valid answer!
lnIPpos = AT([Address:],lcNsLookup,2)+8
lcNsIp = ALLTRIM(SUBSTR(lcNsLookup,lnIPpos))
ELSE
lcNsIp = [] && could not resolve network name
ENDIF
loScriptExec = null
loShell = null
RETURN lcNsIp