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Pretty-print HTTP errors when downloading a file.

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Jukka Jylänki
2013-09-05 16:52:01 +03:00
parent dd93abdc6d
commit 0065fd3bc0
1 changed files with 22 additions and 18 deletions
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40
emsdk
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@@ -114,27 +114,31 @@ def download_file(url, dstpath, download_even_if_exists=False):
if os.path.exists(file_name) and not download_even_if_exists: if os.path.exists(file_name) and not download_even_if_exists:
print "File '" + file_name + "' already downloaded, skipping." print "File '" + file_name + "' already downloaded, skipping."
return True return True
u = urllib2.urlopen(url) try:
mkdir_p(os.path.dirname(file_name)) u = urllib2.urlopen(url)
f = open(file_name, 'wb') mkdir_p(os.path.dirname(file_name))
meta = u.info() f = open(file_name, 'wb')
file_size = int(meta.getheaders("Content-Length")[0]) meta = u.info()
print "Downloading: %s from %s Bytes: %s" % (file_name, url, file_size) file_size = int(meta.getheaders("Content-Length")[0])
print "Downloading: %s from %s Bytes: %s" % (file_name, url, file_size)
file_size_dl = 0 file_size_dl = 0
block_sz = 8192 block_sz = 8192
while True: while True:
buffer = u.read(block_sz) buffer = u.read(block_sz)
if not buffer: if not buffer:
break break
file_size_dl += len(buffer) file_size_dl += len(buffer)
f.write(buffer) f.write(buffer)
status = r"%10d [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / file_size) status = r"%10d [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / file_size)
status = status + chr(8)*(len(status)+1) status = status + chr(8)*(len(status)+1)
print status, print status,
f.close() f.close()
except urllib2.HTTPError, e:
print "HTTP error with URL '" + url + "': " + str(e)
return False
return True return True
def run_get_output(cmd, cwd=None): def run_get_output(cmd, cwd=None):