StackOverflow2013

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PO
primarykey
Id
14565894
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
4
CommunityOwnedDate
CreationDate
2013-01-28T15:54:58.180
FavoriteCount
0
LastActivityDate
2013-01-28T16:05:49.700
LastEditDate
2013-01-28T16:05:49.700
LastEditorUserId
13005
OwnerUserId
13005
ParentId
14565400
PostTypeId
2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
The simplest way to search for TOKEN is: <ul> <li>try to match "TOKEN" starting from position 0 in the stream</li> <li>try to match "TOKEN" starting from position 1 in the stream</li> <li>etc</li> </ul> So all you need to buffer is a number of bytes from the stream equal to the length of "TOKEN" (5 bytes, or actually 4 will do). At each position try to match "TOKEN", which might require waiting until you have at least 5 bytes read into your buffer. If the match fails, rewind to where you started matching, plus one. Since you never rewind more than the length of the string you're searching for (minus one) that's all the buffer you really need. The technical issue then is, how to maintain your 5 bytes of buffered data as you read continuously from the stream. One way is a so-called "circular buffer". Another way, especially if the token is small, is to use a larger buffer and whenever you get too near the end, copy the bytes you need to the beginning and start again. If your function is a callback, called once for each new chunk of data, then you will need to maintain some state from one call to the next to allow for a match that spans two chunks. If you're lucky then your callback API includes a "user data pointer", and you can set that to point to whatever struct you like that includes the buffer. If not, you'll need global or thread-local variables. If the stream has a high data rate then you might want to think about speeding things up, with the KMP algorithm or otherwise.
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Title
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1. This table or related slice is empty.
PostParentId
1. POBest approach to continuously scan for a string in a streaming buffer
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 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USSteve Jessop
UserOwnerUserId
1. USSteve Jessop
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PostsAcceptedAnswerId
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PostsParentIdCreationDate
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1. This table or related slice is empty.

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