Add scrapelib.py and Wikipedia scraper.

crawler/scrapelib.py

@@ -0,0 +1,38 @@
+#!/opt/local/bin/python
+
+import os.path
+import sys
+import time
+import urllib2
+
+USER_AGENT="MapsWithMe Scraper <info@mapswithme.com>"
+
+def ScrapeUrl(url, fileName, delay, info, maxTryCount = 5, userAgent = USER_AGENT):
+  if os.path.exists(fileName):
+    sys.stderr.write('Skipping existing {0} {1}\n'.format(info, fileName))
+  else:
+    sys.stderr.write('Downloading {0} {1} {2} \n'.format(info, fileName, url))
+
+    tryCount = 0
+    while True:
+      try:
+        tryCount = tryCount + 1
+        remoteFile = urllib2.urlopen(urllib2.Request(url, None, { "User-Agent" : userAgent }))
+ 
+        try:
+          data = remoteFile.read()
+        finally:
+          remoteFile.close()
+        break
+      except IOError as error:
+        sys.stderr.write('Try {0}, error: {1}\n'.format(tryCount, error))
+        if tryCount >= maxTryCount:
+          raise
+        else:
+          time.sleep(delay)
+
+    localFile = open(fileName, 'w')
+    localFile.write(data)
+    localFile.close()
+
+    time.sleep(delay)

crawler/wikipedia-crawler.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e -u -x
+MY_PATH=`dirname $0`
+WIKI_LOCALE="en"
+NOW=$(date +"%Y-%m-%d-%H-%M")
+
+wget http://wikilocation.org/mysqldumps/$WIKI_LOCALE.sql.gz
+
+gunzip $WIKI_LOCALE.sql.gz
+
+cat $WIKI_LOCALE.sql | grep "INSERT INTO" > $WIKI_LOCALE.inserts
+
+cat $WIKI_LOCALE.inserts | sed 's/INSERT INTO .* VALUES (/[/g' | sed 's/),(/]\n[/g' | sed 's/);/]/g' | sed "s/','/\",\"/g" | sed "s/,'/,\"/g" | sed "s/']/\"]/g" | sed "s/\\\'/\\'/g" > $WIKI_LOCALE-pages.json
+
+cat $WIKI_LOCALE-pages.json | python $MY_PATH/wikipedia-download-pages.py --locale=$WIKI_LOCALE --minlat=45.8 --maxlat=47.83 --minlon=5.93 --maxlon=10.54 2>&1 | tee wikipedia-download.log.$NOW
+
+# TODO: Run publisher.

crawler/wikipedia-download-pages.py

@@ -0,0 +1,29 @@
+#!/opt/local/bin/python
+import scrapelib
+
+import argparse
+import json
+import os.path
+import sys
+import time
+import urllib2
+
+argParser = argparse.ArgumentParser(description = 'Download Wikipedia for a given locale.')
+argParser.add_argument("--locale", required = True)
+argParser.add_argument("--minlat", type=float, default=-1000)
+argParser.add_argument("--maxlat", type=float, default=1000)
+argParser.add_argument("--minlon", type=float, default=-1000)
+argParser.add_argument("--maxlon", type=float, default=1000)
+ARGS = argParser.parse_args()
+
+for i, line in enumerate(sys.stdin):
+  (itemId, lat, lon, itemType, title) = json.loads(line)
+  
+  if lat >= ARGS.minlat and lat <= ARGS.maxlat and lon >= ARGS.minlon and lon <= ARGS.maxlon:
+    fileName = urllib2.quote(title.encode("utf-8"), " ()") + ".html"
+    url = "http://{0}.wikipedia.org/w/index.php?curid={1}&useformat=mobile".format(ARGS.locale, itemId)
+
+    if title.find('_') != -1:
+      sys.stderr.write('WARNING! Title contains "_". It will not be found!\n')
+
+    scrapelib.ScrapeUrl(url, fileName, 1, i)