grep.sh

#!/bin/sh
#
# Copyright (c) 2010-2012 Steffen Kieß
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#

# Usage: ./grep.sh pattern [-o] [-i]
# -o = show results with 'less'

set -e
#set -x

#EXEC="$(readlink -f "$0")"
EXEC="$0"
POS="${EXEC%/*}"

PAT="$1"
shift

doFind () {
    find "$POS" \
        -type d \( \
        -name "lib" \
        -o -name "download" \
        -o -name "generated" \
        -o -name ".git" \
        -o -name "output" \
        \) -prune -o \
        \( \
        -type f \
        \( -name "*.?pp" -o -name "*.c" -o -name "*.h" -o -name "*.cl" -o -name "*.i" \) \
        ! -name "*.stub.*" ! -name "*_wrap.cpp" \
        -print0 \
        \)
}

if [ "$1" = "-o" ]; then
    shift
    doFind | xargs -0 grep -H --color=yes "$@" -- "$PAT" | less -R
else
    doFind | xargs -0 grep -H --color=auto "$@" -- "$PAT"
fi