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Re: OT:cscope/tags


From: Hadron Quark
Subject: Re: OT:cscope/tags
Date: Wed, 06 Dec 2006 02:32:49 +0100

Perry Smith <address@hidden> writes:

> On Dec 5, 2006, at 4:39 PM, Hadron Quark wrote:
>
>> Perry Smith <address@hidden> writes:
>>
>>> cscope.  To make the db I use -q.  To invoke it via emacs, I use -q
>>> and -d:
>>>
>>>        -d     Do not update the cross-reference.
>>>
>>>        -q     Enable  fast  symbol  lookup  via an inverted
>>
>> Just for thread completeness, how do you add these options when
>> inviking
>> cscope from emacs? How are you accessing cscope from emacs? Which el
>> package do you use?
>
> Well, its a long story.  I created my own cscope.el back in 1990.  I'm
> happy to share it
> but it has lots of weird twisted gunk in it.  I have the concept of an
> "inherited buffer".  Each
> buffer has a buffer local variable that points back to its inherited
> buffer.  In this way,
> different buffers can use different cscope's and not get confused
> between them.  At the

Can you expand on this? I dont understand.

Did you try xcscope previously referenced? With auto database update
turned off, it works great.

> time, there was a lot of other things that were inherited besides just
> the cscope information
> (like build information and that sort of thing).
>
> I also have a script called cscope-front (I've appended it to the
> bottom).  I doubt if it
> will do you much good either except just as a thought of calling
> cscope via a script
> and then that script can add and subtract arguments based upon a
> number of
> variables.  This keeps the lisp code simpler -- I was more comfortable
> writing shell
> scripts than lisp code at the time.
>
> I create the cscope database via make.  The makefile creates a list of
> files called cscope.files,
> (usually based upon various make variables), then it calls cscope as:
>
> cscope -q -b
>
> (The cscope I'm using defaults to looking in cscope.files for the list
> of files.)
>
> From emacs, I call cscope-front (using my cscope.el routines).  As you
> can see, the script
> has debug output to /tmp/doggy.  Here are some sample lines from doggy:
>
> /home/pedz/Eclipse/SATA/src
> a='' p='/home/pedz/Eclipse/SATA/src'
> /usr/local/bin/cscope -d -q -l -P /home/pedz/Eclipse/SATA/src -f 
> cscope.out
>
> The last line is all the args I use to call cscope with.
>
> Hopefully, something in here will be useful to you.
>
> #!/usr/local/bin/bash
> #
> # First arg is the string to pass to setup, second arg is the
> # directory where the cscope should behave from
> #
> a=$1
> p=$( echo $2 | sed -e 's%/$%%' )
> CSCOPE=/usr/local/bin/cscope
>
> shift
> shift
>
> /bin/pwd >>  /tmp/doggy
> echo "a='$a' p='$p'" >> /tmp/doggy
> if [ -n "$a" ] ; then
>   source ~/.setup $a
> fi
> #
> # DFS permissions are weird and I can execute things even though the
> # file system says I can not.  So I only check to see if the file
> # exists or not.
> #
> if [ -e cscope/bin/cscope ] ; then
>   CSCOPE=cscope/bin/cscope
> elif [ -e ../cscope/bin/cscope ] ; then
>   CSCOPE=../cscope/bin/cscope
> elif [ -e ../../cscope/bin/cscope ] ; then
>   CSCOPE=../../cscope/bin/cscope
> fi
>
> echo $CSCOPE -d -q -l -P "$p" "$@" >> /tmp/doggy
> exec $CSCOPE -d -q -l -P "$p" "$@" 2>>/tmp/doggy
> # echo $CSCOPE -q -l -P "'$p'" "$@" >> /tmp/doggy
> # exec $CSCOPE -q -l -P "'$p'" "$@" 2>> /tmp/doggy
> # echo $CSCOPE -q -l >> /tmp/doggy
> # $CSCOPE -q -l 2>> /tmp/doggy
>
> # /afs/austin/aix/project/aix41C/cscope/bin/cscope -d -q -l \
> #     -f /afs/austin/aix/project/aix41C/cscope/bos.db
> #
> #     -P /afs/austin/aix/project/aix41C/build/base
>
>
>

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