Add example files to SVN

1 files changed, 30 insertions, 0 deletions

diff --git a/src/examples/getNTPservers.py b/src/examples/getNTPservers.py
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+++ b/src/examples/getNTPservers.py
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+# getNTPservers.py

+#

+# Demonstration of the parsing module, implementing a HTML page scanner,

+# to extract a list of NTP time servers from the NIST web site.

+#

+# Copyright 2004, by Paul McGuire

+#

+from pyparsing import Word, Combine, Suppress, CharsNotIn, nums

+import urllib

+

+integer = Word(nums)

+ipAddress = Combine( integer + "." + integer + "." + integer + "." + integer )

+tdStart = Suppress("<td>")

+tdEnd = Suppress("</td>")

+timeServerPattern =  tdStart + ipAddress.setResultsName("ipAddr") + tdEnd + \

+        tdStart + CharsNotIn("<").setResultsName("loc") + tdEnd

+

+# get list of time servers

+nistTimeServerURL = "http://www.boulder.nist.gov/timefreq/service/time-servers.html"

+serverListPage = urllib.urlopen( nistTimeServerURL )

+serverListHTML = serverListPage.read()

+serverListPage.close()

+

+addrs = {}

+for srvr,startloc,endloc in timeServerPattern.scanString( serverListHTML ):

+    print srvr.ipAddr, "-", srvr.loc

+    addrs[srvr.ipAddr] = srvr.loc

+    # or do this:

+    #~ addr,loc = srvr

+    #~ print addr, "-", loc