winfreed.py: factor out a generic download_file() function

[winfreed.git] / winfreed.py

diff --git a/winfreed.py b/winfreed.py
index a53bda8..99eabb7 100755 (executable)
--- a/winfreed.py
+++ b/winfreed.py
@@ -33,6 +33,7 @@ LANGCODE = 'en-US'
 PKG_DIR = 'pkgs'
 CHUNK_SIZE = 8192
 
 PKG_DIR = 'pkgs'
 CHUNK_SIZE = 8192
 

+

 def get_pkg(json_file):
     with open(json_file, mode='r') as f:
         pkg = json.load(f)
 def get_pkg(json_file):
     with open(json_file, mode='r') as f:
         pkg = json.load(f)


@@ -44,6 +45,7 @@ def get_pkg(json_file):
 
     return None
 
 
     return None
 

+

 def process_all(path, cb):
     listing = glob.glob(os.path.join(path, '*.json'))
     for json_file in listing:
 def process_all(path, cb):
     listing = glob.glob(os.path.join(path, '*.json'))
     for json_file in listing:


@@ -53,39 +55,41 @@ def process_all(path, cb):
             continue
         cb(pkg)
 
             continue
         cb(pkg)
 

+

 def show(pkg):
     print 'Package:  ', pkg['package_name']
     print 'Program:  ', pkg['name']
     print 'Homepage: ', pkg['homepage']
     print
 
 def show(pkg):
     print 'Package:  ', pkg['package_name']
     print 'Program:  ', pkg['name']
     print 'Homepage: ', pkg['homepage']
     print
 

-def download(pkg):
-    # the "%s" in URLs are meant to be replaced with LANGCODE
-    try:
-        url = pkg['URL'] % LANGCODE
-    except:
-        url = pkg['URL']
-        pass

 
 

+def download_file(url, dest_dir):

     response = urllib2.urlopen(url)
     response = urllib2.urlopen(url)

+    url = response.geturl()

 
     filename = ""
 
     filename = ""

-    if 'Content-Disposition' in  response.info():
-        # Use the filename the server tells us if any,
-        # re pattern from http://stackoverflow.com/questions/8035900
-        content_disposition = response.info().getheader('Content-Disposition').strip()
-        filename = re.findall("filename=(\S+)", content_disposition)[0]
-    
-    if filename == "":
-        filename = urllib2.unquote(os.path.basename(response.geturl()))
+
+    # From http://paste.pound-python.org/show/9545/
+    # TODO: use a proper module to parse HTTP headers
+    if response.info().has_key('Content-Disposition') and len(response.info()['Content-Disposition'].split('filename=')) > 1:
+        # If the response has Content-Disposition, we take file name from it
+        filename = response.info()['Content-Disposition'].split('filename=')[1].decode('utf-8')
+        if filename[0] == '"' or filename[0] == "'":
+            filename = urllib2.unquote(filename.split('"')[1])
+    else:
+        filename =  urllib2.unquote(url.split('/')[-1].decode('utf_8'))

 
     if filename == "":
 
     if filename == "":

-        sys.stderr.write("Debug (%s): filename: %s url: %s\n" %(pkg['package_name'], filename, response.geturl()))
+        sys.stderr.write("Debug (%s): filename: %s url: %s\n" % (pkg['package_name'], filename, url))

         return
 
         return
 

-    destfile = os.path.join(OUTPUT_DIR, filename)
+    # TODO: Add some integrity verification of downloaded files (md5, sha256?)
+
+    destfile = os.path.join(dest_dir, filename)

     if os.path.exists(destfile):
     if os.path.exists(destfile):

-        sys.stderr.write("Warning (%s): %s exists!\n" % (pkg['package_name'], destfile))
+        # TODO: check if the file is a full download from previous run,
+        # if not download again discarding the existing file?
+        sys.stderr.write("Warning: %s exists!\n" % destfile)

         return
 
     outfile = open(destfile, mode='w')
         return
 
     outfile = open(destfile, mode='w')


@@ -93,7 +97,8 @@ def download(pkg):
     total_size = response.info().getheader('Content-Length').strip()
     total_size = int(total_size)
 
     total_size = response.info().getheader('Content-Length').strip()
     total_size = int(total_size)
 

-    widgets = [pkg['name'], ' ', Percentage(), ' ', Bar(marker='=', left='[', right=']'),
+    #widgets = [pkg['name'], ' ', Percentage(), ' ', Bar(marker='=', left='[', right=']'),
+    widgets = [filename, ' ', Percentage(), ' ', Bar(marker='=', left='[', right=']'),

                ' ', ETA(), ' ', FileTransferSpeed()]
     pbar = ProgressBar(widgets=widgets, maxval=total_size).start()
 
                ' ', ETA(), ' ', FileTransferSpeed()]
     pbar = ProgressBar(widgets=widgets, maxval=total_size).start()
 


@@ -108,15 +113,31 @@ def download(pkg):
         pbar.update(bytes_so_far)
     pbar.finish()
 
         pbar.update(bytes_so_far)
     pbar.finish()
 

+    outfile.close()
+
+
+def download(pkg):
+    # the "%s" in URLs are meant to be replaced with LANGCODE
+    try:
+        pkg_url = pkg['URL'] % LANGCODE
+    except:
+        pkg_url = pkg['URL']
+        pass
+
+    download_file(pkg_url, OUTPUT_DIR)
+
+

 def show_all():
     process_all(PKG_DIR, show)
 
 def show_all():
     process_all(PKG_DIR, show)
 

+

 def download_all():
     if os.path.exists(OUTPUT_DIR) == False:
         os.mkdir(OUTPUT_DIR, 0755)
 
     process_all(PKG_DIR, download)
 
 def download_all():
     if os.path.exists(OUTPUT_DIR) == False:
         os.mkdir(OUTPUT_DIR, 0755)
 
     process_all(PKG_DIR, download)
 

+

 def usage():
     usage = "winfreed - download a selection of Free Software for MS Windows.\n\n"
     usage += "usage: %s <COMMAND>\n\n" % sys.argv[0]
 def usage():
     usage = "winfreed - download a selection of Free Software for MS Windows.\n\n"
     usage += "usage: %s <COMMAND>\n\n" % sys.argv[0]


@@ -138,5 +159,5 @@ if __name__ == "__main__":
     else:
         usage()
         sys.exit(1)
     else:
         usage()
         sys.exit(1)

-    
+

     sys.exit(0)
     sys.exit(0)