* common.py: New functions: checkReleaseExists() and checkSourceExists().

* buildd and pull-lp-source: Adapt code to use new functions above.

buildd

@@ -91,22 +91,12 @@ if os.environ.has_key('https_proxy'):
 launchpadCookie = common.prepareLaunchpadCookie()
 urlopener = common.setupLaunchpadUrlOpener(launchpadCookie)
 
+# Check the release exists.
+# Check release by checking if Launchpad page exists
+common.checkReleaseExists(release)
+
 # Find out the version in given release.
-try:
-    page = urlopener.open('https://launchpad.net/ubuntu/+source/' + package).read()
-except urllib2.HTTPError:
-    print >> sys.stderr, "The source package (%s) does not appear to exist " \
-        "in Ubuntu." % package
-    sys.exit(1)
-
-m = re.search('"/ubuntu/%s/\+source/%s/(\d[^"]+)"' % (release,
-    package.replace('+', '\+')), page)
-if not m:
-    print >> sys.stderr, "Unable to find this source package (%s) in this " \
-        "release (%s)." % (package, release.capitalize())
-    sys.exit(1)
-
-version = m.group(1)
+(page, version) = common.checkSourceExists(package, release)
 
 # Output details.
 print "The source version for '%s' in %s is at %s." % (package,

common.py

@@ -27,6 +27,7 @@
 import cookielib
 import glob
 import os.path
+import re
 import sys
 import urllib2
 
@@ -61,6 +62,54 @@ def readlist(filename, uniq=True):
     
     return items
 
+def checkReleaseExists(release):
+    """ Check that an Ubuntu release exists by opening
+        https://launchpad.net/ubuntu/releaseName page on Launchpad.
+
+        If an error is returned; the release does not exist. """
+    try:
+        urllib2.urlopen("https://launchpad.net/ubuntu/%s" % release)
+    except urllib2.HTTPError:
+        print >> sys.stderr, "The '%s' release does not appear to exist on " \
+            "Launchpad." % release
+        sys.exit(1)
+
+def checkSourceExists(package, release):
+    """ Check that a package exists by opening its
+        https://launchpad.net/ubuntu/+source/package page.
+        
+        Return the page and version in release. """
+    try:
+        page = urllib2.urlopen('https://launchpad.net/ubuntu/+source/' + package).read()
+
+        m = re.search('"/ubuntu/%s/\+source/%s/(\d[^"]+)"' % (release,
+                package.replace('+', '\+')), page)
+        if not m:
+            print >> sys.stderr, "Unable to find this source package (%s) in " \
+                "this release (%s)." % (package, release.capitalize())
+            sys.exit(1)
+
+    except urllib2.HTTPError, error: # Raised on 404.
+        if error.code == 404:
+            print >> sys.stderr, "The source package (%s) does not appear to " \
+                "exist in Ubuntu." % package
+        else: # Other error code, probably Launchpad malfunction.
+            print >> sys.stderr, "Error when checking Launchpad for package: " \
+                "%s." % error
+        
+        sys.exit(1) # Exit. Error encountered.
+
+    except urllib2.URLError, error: # Other error (NXDOMAIN, ...)
+        (_, reason) = error.reason
+        print >> sys.stderr, "Error when checking Launchpad for package: %s." % \
+            reason
+        sys.exit(1)
+
+    # Get package version.
+    version = m.group(1)
+
+    return page, version
+
 def prepareLaunchpadCookie():
     """ Search for a cookie file in the places as defined by try_globs.
         We shall use this cookie for authentication with Launchpad. """

debian/changelog

@@ -3,6 +3,8 @@ ubuntu-dev-tools (0.42ubuntu1) intrepid; urgency=low
   [Jonathan Patrick Davies]
   * requestsync: Exit when connecting to Launchpad fails.
   * doc/requestsync.1: Document new -d flag.
+  * common.py: New functions: checkReleaseExists() and checkSourceExists().
+  * buildd and pull-lp-source: Adapt code to use new functions above.
 
   [ Jelmer Vernooij ]
   * requestsync: Add -d option to allow overriding the Debian distro to sync

pull-lp-source

@@ -32,6 +32,10 @@ import sys
 import urllib2
 from optparse import OptionParser
 
+# Ubuntu-dev-tools modules.
+sys.path.append("/usr/share/ubuntu-dev-tools")
+import common
+
 class BackportFromLP:
 
     def __getitem__(self, name):
@@ -67,54 +71,19 @@ if __name__ == '__main__':
         optParser.print_help()
         sys.exit(1)
     
-    package = args[0]
+    package = str(args[0]).lower()
 
     if len(args) == 2: # Custom distribution specified.
-        release = args[1]
+        release = str(args[1]).lower()
     else:
         release = os.getenv('DIST') or default_release
 
     # Correct-ish args, can proceed.
     # Check release by checking if Launchpad page exists
-    try:
-        urllib2.urlopen("https://launchpad.net/ubuntu/%s" % release)
-    except urllib2.HTTPError:
-        print >> sys.stderr, "The '%s' release does not appear to exist on " \
-            "Launchpad." % release
-        sys.exit(1)
+    common.checkReleaseExists(release)
 
     # Check package exists.
-    try:
-
-        sourcePage = urllib2.urlopen("https://launchpad.net/ubuntu/%s/+source/%s" % \
-            (release, package)).read()
-        m = re.search('"/ubuntu/%s/\+source/%s/(\d[^"]+)"' % (release, \
-            package.replace('+', '\+')), sourcePage)
-    
-        if not m:
-            print >> sys.stderr, "The '%s' package does not appear to exist in " \
-                "the '%s' release." % (package, release)
-            sys.exit(1)
-
-    except urllib2.HTTPError, e: # Raised on 404
-           
-        if e.code == 404:
-
-            print >> sys.stderr, "The '%s' package does not appear to exist in " \
-                "the '%s' release." % (package, release)
-
-        else: # Other code, probably LP malfunction
-            
-            print >> sys.stderr, "Error when checking Launchpad for package: %s " % e
-
-        sys.exit(1)
-
-    except urllib2.URLError, e: # Other error (NXDOMAIN, ...)
-
-            (_, reason) = e.reason
-
-            print >> sys.stderr, "Error when checking Launchpad for package: %s " % reason
-            sys.exit(1)
+    common.checkSourceExists(package, release)
 
     # All good - start downloading...
     try: