#!/bin/rc
# var - find C variable declarations
# var [pattern]

rfork e

ident='([a-zA-Z_][a-zA-Z_0-9]*)'
var=$1
var=`{echo $var | sed 's,%,'$ident'?,g'}
if(~ $#var 0)
	var=$ident
decl='[ 	]*'$ident'\**[ 	]+\**[ 	]*'$var'(\[.*\])?[ 	]*(;$|=[^=]*)'
falsematch='(return|goto|typedef)';
srcs=`{walk -f | grep '\.(c|h)'}
grep -n -e $decl $srcs /dev/null | grep -v $falsematch | sed 's,[ 	]+, ,g'