Last active
May 6, 2023 20:10
Revisions
-
dcwatson renamed this gist
May 1, 2014 . 1 changed file with 0 additions and 0 deletions.There are no files selected for viewing
File renamed without changes. -
dcwatson created this gist
May 1, 2014 .There are no files selected for viewing
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,59 @@ from django.http import StreamingHttpResponse from wsgiref.util import FileWrapper import mimetypes import os import re range_re = re.compile(r'bytes\s*=\s*(\d+)\s*-\s*(\d*)', re.I) class RangeFileWrapper (object): def __init__(self, filelike, blksize=8192, offset=0, length=None): self.filelike = filelike self.filelike.seek(offset, os.SEEK_SET) self.remaining = length self.blksize = blksize def close(self): if hasattr(self.filelike, 'close'): self.filelike.close() def __iter__(self): return self def next(self): if self.remaining is None: # If remaining is None, we're reading the entire file. data = self.filelike.read(self.blksize) if data: return data raise StopIteration() else: if self.remaining <= 0: raise StopIteration() data = self.filelike.read(min(self.remaining, self.blksize)) if not data: raise StopIteration() self.remaining -= len(data) return data def stream(request, path): range_header = request.META.get('HTTP_RANGE', '').strip() range_match = range_re.match(range_header) size = os.path.getsize(path) content_type, encoding = mimetypes.guess_type(path) content_type = content_type or 'application/octet-stream' if range_match: first_byte, last_byte = range_match.groups() first_byte = int(first_byte) if first_byte else 0 last_byte = int(last_byte) if last_byte else size - 1 if last_byte >= size: last_byte = size - 1 length = last_byte - first_byte + 1 resp = StreamingHttpResponse(RangeFileWrapper(open(path, 'rb'), offset=first_byte, length=length), status=206, content_type=content_type) resp['Content-Length'] = str(length) resp['Content-Range'] = 'bytes %s-%s/%s' % (first_byte, last_byte, size) else: resp = StreamingHttpResponse(FileWrapper(open(path, 'rb')), content_type=content_type) resp['Content-Length'] = str(size) resp['Accept-Ranges'] = 'bytes' return resp