yetangitu/pdf.js
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Implement progressive loading of PDFs

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This commit is contained in:
Mack Duan 2013-02-06 15:19:29 -08:00
parent added3da8f
commit ef423ef30c
25 changed files with 2110 additions and 586 deletions
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36
test/test.py
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@ -88,6 +88,7 @@ class TestOptions(OptionParser):
return options
def prompt(question):
'''Return True iff the user answered "yes" to |question|.'''
inp = raw_input(question +' [yes/no] > ')
@ -157,12 +158,32 @@ class TestHandlerBase(BaseHTTPRequestHandler):
def sendFile(self, path, ext):
self.send_response(200)
self.send_header("Accept-Ranges", "bytes")
self.send_header("Content-Type", MIMEs[ext])
self.send_header("Content-Length", os.path.getsize(path))
self.end_headers()
with open(path, "rb") as f:
self.wfile.write(f.read())
def sendFileRange(self, path, ext, start, end):
file_len = os.path.getsize(path)
if (end is None) or (file_len < end):
end = file_len
if (file_len < start) or (end <= start):
self.send_error(416)
return
chunk_len = end - start
self.send_response(206)
self.send_header("Accept-Ranges", "bytes")
self.send_header("Content-Type", MIMEs[ext])
self.send_header("Content-Length", chunk_len)
self.send_header("Content-Range", 'bytes ' + str(start) + '-' + str(end - 1) + '/' + str(file_len))
self.end_headers()
time.sleep(chunk_len / 500000.0)
with open(path, "rb") as f:
f.seek(start)
self.wfile.write(f.read(chunk_len))
def do_GET(self):
url = urlparse(self.path)
@ -188,8 +209,18 @@ class TestHandlerBase(BaseHTTPRequestHandler):
return
if 'Range' in self.headers:
# TODO for fetch-as-you-go
self.send_error(501)
range_re = re.compile(r"^bytes=(\d+)\-(\d+)?")
parsed_range = range_re.search(self.headers.getheader("Range"))
if parsed_range is None:
self.send_error(501)
return
print 'Range requested ' + parsed_range.group(1) + '-' + parsed_range.group(2)
start = int(parsed_range.group(1))
if parsed_range.group(2) is None:
self.sendFileRange(path, ext, start, None)
else:
end = int(parsed_range.group(2)) + 1
self.sendFileRange(path, ext, start, end)
return
self.sendFile(path, ext)
@ -606,6 +637,7 @@ def startBrowsers(browsers, options, path):
qs = '?browser='+ urllib.quote(b.name) +'&manifestFile='+ urllib.quote(options.manifestFile)
qs += '&path=' + b.path
qs += '&delay=' + str(options.statsDelay)
qs += '&masterMode=' + str(options.masterMode)
b.start(host + path + qs)
def teardownBrowsers(browsers):