[naviserver-tracker] [ naviserver-Feature Requests-1122940 ] Tcl command switch parsing routines

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Feature Requests item #1122940, was opened at 2005-02-15 01:05
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Category: C-API
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Stephen Deasey (sdeasey)
Assigned to: Stephen Deasey (sdeasey)
Summary: Tcl command switch parsing routines

Initial Comment:

Parsing the switches and arguments for a Tcl command
can be a real pain: it's very easy to make off-by-one
errors, and it often involves a lot of repetitive
typing which obscures the real intent of the command.

The attached patch provides the routine Ns_ParseObjv. 
It parses switches and arguments, checks types, and
generates error/usage messages automatically.  Switches
are handled efficiently via indexed lookups.

The intent is not only to reduce the number of errors
in switch handling code but to make switch handling
such an easy task that developers are more likely to
design easy to use, tcl-friendly APIs rather than APIs
that are convenient to implement.




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