[gpsbabel] Add and document gpsbabel-download-latest.py

[Hans Ulrich Niedermann]

commit edb9351439d9bd444ddfc47780f28a576c208b62
Author: Hans Ulrich Niedermann <hun at n-dimensional.de>
Date:   Fri Jan 21 19:59:41 2011 +0100

    Add and document gpsbabel-download-latest.py
    
    As upstream only offers HTTP POST downloads, and only of the
    latest tarball, we add a BeautifulSoup based download script
    to fetch the very latest source tarball.

 gpsbabel-download-latest.py |   54 +++++++++++++++++++++++++++++++++++++++++++
 gpsbabel.spec               |   24 +++++++++++--------
 2 files changed, 68 insertions(+), 10 deletions(-)
---
diff --git a/gpsbabel-download-latest.py b/gpsbabel-download-latest.py
new file mode 100755
index 0000000..27e0774
--- /dev/null
+++ b/gpsbabel-download-latest.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+
+import re
+import urllib2
+import subprocess
+from BeautifulSoup import BeautifulSoup
+
+download_url = "http://www.gpsbabel.org/download.html"
+
+print "Loading HTML page", download_url
+
+page = urllib2.urlopen(download_url)
+# print "page:", page
+
+soup = BeautifulSoup(page)
+# print "soup:", soup
+
+rexp = re.compile('\.tar\.gz$')
+
+def test_tag(tag):
+    if tag.name != 'form': return False
+    if tag['action'] != 'plan9.php': return False
+    if tag['method'] != 'post': return False
+    if tag['enctype'] != 'multipart/form-data': return False
+    found = tag.find('input', value=rexp)
+    return found
+
+tarball_form = soup.find(test_tag)
+form_inputs = tarball_form.findAll('input')
+
+d = dict([ (input['name'], input['value']) for input in form_inputs ])
+# print d
+
+tarball = d[u'dl']
+token = d[u'token']
+
+# print "tarball:", tarball
+# print "token:", token
+
+cmd = [ 'curl',
+        '-F', "=".join(['dl', tarball]),
+        '-F', "=".join(['token', token]),
+        '-e', download_url,
+        'http://www.gpsbabel.org/plan9.php',
+        '-o', tarball ]
+# print "Command:", cmd
+
+print "Running curl to get tarball via HTTP POST:", tarball
+retcode = subprocess.call(cmd, shell=False)
+
+if retcode == 0:
+    print "Successfully downloaded tarball:", tarball
+else:
+    print "Error downloading tarball (%d):" % retcode, tarball
diff --git a/gpsbabel.spec b/gpsbabel.spec
index d67855e..7ada3b7 100644
--- a/gpsbabel.spec
+++ b/gpsbabel.spec
@@ -6,17 +6,21 @@ Summary:       A tool to convert between various formats used by GPS devices
 Group:         Applications/Text
 License:       GPLv2+
 URL:           http://www.gpsbabel.org
-# Source can only be downloaded via HTTP POST. Run
+# There is no Source0 URL as upstream only offers download via HTTP
+# POST, and only for the latest release.  Point your web browser to
+# http://www.gpsbabel.org/download.html, scroll down to the linux
+# source tarball download button and click on it.  Or try the included
+# gpsbabel-download-latest.py script to download the latest tarball
+# (requires the python-BeautifulSoup package):
 #
-#   curl -F "dl=gpsbabel-1.4.2.tar.gz" \
-#        -F "token=a1aad879" \
-#        http://www.gpsbabel.org/plan9.php \
-#        -o gpsbabel-1.4.2.tar.gz
-#
-# which will probably stop working again in a jiffy, so you'll better
-# point your elinks/firefox/etc at
-# http://www.gpsbabel.org/download.html and click on the linux source
-# download button.
+# $ ./gpsbabel-download-latest.py
+# Loading HTML page http://www.gpsbabel.org/download.html
+# Running curl to get tarball via HTTP POST: gpsbabel-1.4.2.tar.gz
+#   % Total   % Received % Xferd  Average Speed   Time    Time     Time  Current
+#                                 Dload  Upload   Total   Spent    Left  Speed
+# 100 5421k 100 5421k  100   260   252k     12  0:00:21  0:00:21 --:--:--  263k
+# Successfully downloaded tarball: gpsbabel-1.4.2.tar.gz
+# $
 Source0:       %{name}-%{version}.tar.gz
 Source1:       %{name}.desktop
 Source2:       %{name}.png