tiny-tools/regextr

#!/bin/sh

# usage: regextr [exp]*
#
#    eg:
#      capt=(
#      /capt=)
#      etc.
#
# see your ~/.regextr for the complete syntax, or the code just below 
#
# it can be used yet to compose expressions:
#
#    echo lol | pcregrep "`./regextr capt captname text /captname l repeated /capt`"
#

if [ "X$0" = "X" ]; then
  echo "usage: regextr [exp]*"
  exit
fi

if [ ! -e ~/.regextr ]; then

  # creating default syntax file..
  
	echo "exp=/" >>~/.regextr 
	echo "/exp=/" >>~/.regextr
	echo "boundstart=^" >>~/.regextr
	echo "boundend=$" >>~/.regextr
	echo "capt=(" >>~/.regextr 
	echo "/capt=)" >>~/.regextr 
	echo "captor=|" >>~/.regextr 
	echo "captname=?<" >>~/.regextr
	echo "/captname=>" >>~/.regextr 
	echo "range=[" >>~/.regextr 
	echo "notrange=[^" >>~/.regextr 
	echo "/range=]" >>~/.regextr 
	echo "digit=\d" >>~/.regextr 
	echo "string=." >>~/.regextr 
	echo "word=\w" >>~/.regextr 
	echo "space=\s" >>~/.regextr 
	echo "notspace=\S" >>~/.regextr 
	echo "repeated=+" >>~/.regextr 
	echo "maybenot=?" >>~/.regextr 
	echo "quant={" >>~/.regextr 
	echo "quantsep=-" >>~/.regextr 
	echo "/quant=}" >>~/.regextr 
fi

res=""

for exp in $@; do
   test=`pcregrep ^$exp\= ~/.regextr | cut -d = -s -f 2`
   if [ "X$test" = "X" ]; then
     res=$res$exp
   else
     res=$res`pcregrep ^$exp\= ~/.regextr | cut -d = -s -f 2`
   fi
done   

echo $res