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Explain BASE_{DEC,HEX,OCT,BIN} a bit more, note that BASE_BIN is for 

binary but currently is just decimal, and note that you may not use
BASE_NONE for integers.

svn path=/trunk/; revision=3352
This commit is contained in:
Guy Harris 2001-04-20 22:00:27 +00:00
parent f4db05c7d1
commit b361003bc5
1 changed files with 8 additions and 4 deletions
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doc/README.developer
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@ -1,4 +1,4 @@
$Id: README.developer,v 1.27 2001/04/20 20:34:31 guy Exp $ $Id: README.developer,v 1.28 2001/04/20 22:00:27 guy Exp $
This file is a HOWTO for Ethereal developers. It describes how to start coding This file is a HOWTO for Ethereal developers. It describes how to start coding
a Ethereal protocol dissector and the use some of the important functions and a Ethereal protocol dissector and the use some of the important functions and
@ -62,7 +62,7 @@ code inside
is needed only if you are using the "snprintf()" function. is needed only if you are using the "snprintf()" function.
The "$Id: README.developer,v 1.27 2001/04/20 20:34:31 guy Exp $" The "$Id: README.developer,v 1.28 2001/04/20 22:00:27 guy Exp $"
in the comment will be updated by CVS when the file is in the comment will be updated by CVS when the file is
checked in; it will allow the RCS "ident" command to report which checked in; it will allow the RCS "ident" command to report which
version of the file is currently checked out. version of the file is currently checked out.
@ -72,7 +72,7 @@ version of the file is currently checked out.
* Routines for PROTONAME dissection * Routines for PROTONAME dissection
* Copyright 2000, YOUR_NAME <YOUR_EMAIL_ADDRESS> * Copyright 2000, YOUR_NAME <YOUR_EMAIL_ADDRESS>
* *
* $Id: README.developer,v 1.27 2001/04/20 20:34:31 guy Exp $ * $Id: README.developer,v 1.28 2001/04/20 22:00:27 guy Exp $
* *
* Ethereal - Network traffic analyzer * Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com> * By Gerald Combs <gerald@ethereal.com>
@ -683,6 +683,10 @@ are:
BASE_OCT, BASE_OCT,
BASE_BIN BASE_BIN
BASE_DEC, BASE_HEX, and BASE_OCT are decimal, hexadecimal, and octal,
respectively. BASE_BIN is reserved for binary, although it's currently
treated as decimal - if you want decimal, use BASE_DEC, not BASE_BIN.
For FT_BOOLEAN fields that are also bitfields, 'display' is used to tell For FT_BOOLEAN fields that are also bitfields, 'display' is used to tell
the proto_tree how wide the parent bitfield is. With integers this is the proto_tree how wide the parent bitfield is. With integers this is
not needed since the type of integer itself (FT_UINT8, FT_UINT16, not needed since the type of integer itself (FT_UINT8, FT_UINT16,
@ -691,7 +695,7 @@ bitfield is.
Additionally, BASE_NONE is used for 'display' as a NULL-value. That is, Additionally, BASE_NONE is used for 'display' as a NULL-value. That is,
for non-integers and non-bitfield FT_BOOLEANs, you'll want to use BASE_NONE for non-integers and non-bitfield FT_BOOLEANs, you'll want to use BASE_NONE
in the 'display' field. in the 'display' field. You may not use BASE_NONE for integers.
It is possible that in the future we will record the endianness of It is possible that in the future we will record the endianness of
integers. If so, it is likely that we'll use a bitmask on the display field integers. If so, it is likely that we'll use a bitmask on the display field