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Update to describe all that the read routine needs to return, and to 

indicate what the seek_read routine needs to do and that you *have* to
have a seek_read routine.

svn path=/trunk/; revision=19860
This commit is contained in:
Guy Harris 2006-11-07 19:25:32 +00:00
parent 5a0ba5b0c7
commit ad3c10a20a
1 changed files with 9 additions and 6 deletions
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15
wiretap/README.developer
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@ -17,13 +17,16 @@ To add the ability to read a new capture file format, you have to:
used);
write a "read" routine that can read a packet from the file and
supply the packet length, captured data length, and time stamp,
and have the "open" routine set the "subtype_read" member of the
"wtap" structure supplied to it to point to that routine;
supply the packet length, captured data length, time stamp, and
packet pseudo-header (if any) and data, and have the "open"
routine set the "subtype_read" member of the "wtap" structure
supplied to it to point to that routine;
write a "seek and read" routine, if necessary, and have the
"open" routine set the "subtype_seek_read" member of the "wtap"
structure to point to that routine.
write a "seek and read" routine that can seek to a specified
location in the file for a packet and supply the packet
pseudo-header (if any) and data, and have the "open" routine set
the "subtype_seek_read" member of the "wtap" structure to point
to that routine;
write a "close" routine, if necessary (if, for example, the
"open" routine allocates any memory), and set the