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Put in a portability note telling people to use "strchr()" and 

"strrchr()", not "index()" and "rindex()"; MSVC++ doesn't declare
"index()" or "rindex()" if you include <string.h>, and they're
non-standard routines (the ANSI C names for those functions are
"strchr()" and "strrchr()").

Add a bit more to the other portability note on the topic of
non-standard vs. ANSI standard functions.

svn path=/trunk/; revision=6539
This commit is contained in:
Guy Harris 2002-11-01 09:41:36 +00:00
parent d24c2bc5b9
commit 749d00f331
1 changed files with 9 additions and 4 deletions
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13
doc/README.developer
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@ -1,4 +1,4 @@
$Id: README.developer,v 1.62 2002/10/17 20:05:04 guy Exp $
$Id: README.developer,v 1.63 2002/11/01 09:41:36 guy Exp $
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
@ -91,12 +91,17 @@ routines
and "memcmp()" (note that "memcmp()" returns 0, 1, or -1, doing
an ordered comparison, rather than just returning 0 for "equal"
and 1 for "not equal").
and 1 for "not equal", as "bcmp()" does).
Not all platforms necessarily have "bzero()"/"bcopy()"/"bcmp()", and
those that do might not declare them in the header file on which they're
declared on your platform.
Don't use "index()" or "rindex()"; instead, use the ANSI C equivalents,
"strchr()" and "strrchr()". Not all platforms necessarily have
"index()" or "rindex()", and those that do might not declare them in the
header file on which they're declared on your platform.
Don't fetch data from packets by getting a pointer to data in the packet
with "tvb_get_ptr()", casting that pointer to a pointer to a structure,
and dereferencing that pointer. That point won't necessarily be aligned
@ -144,7 +149,7 @@ code inside
is needed only if you are using the "snprintf()" function.
The "$Id: README.developer,v 1.62 2002/10/17 20:05:04 guy Exp $"
The "$Id: README.developer,v 1.63 2002/11/01 09:41:36 guy Exp $"
in the comment will be updated by CVS when the file is
checked in; it will allow the RCS "ident" command to report which
version of the file is currently checked out.
@ -154,7 +159,7 @@ version of the file is currently checked out.
* Routines for PROTONAME dissection
* Copyright 2000, YOUR_NAME <YOUR_EMAIL_ADDRESS>
*
* $Id: README.developer,v 1.62 2002/10/17 20:05:04 guy Exp $
* $Id: README.developer,v 1.63 2002/11/01 09:41:36 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>