generate cscope and tags for freebsd src

genct.sh

#!/bin/sh

# Copyright (c) 2015, Shawn Debnath. All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
# 
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# 
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

SRCDIR=/usr/src
FILEPATTERN="*.[chxsS]"
CSCOPEFILES=$HOME/cscope.files

# Files get stored in the user's home directory
cd $HOME

#
# Verify source directory and build cscope files list
#
if [ -d $SRCDIR ]; then
    find $SRCDIR -name "$FILEPATTERN" -print > $CSCOPEFILES
else
    echo "$SRCDIR does not exist"
    exit 1
fi

#
# Check for successful cscope file list creation
#
CSCOPEFILESSZ=$(stat -f %z $CSCOPEFILES)
if [ -f $CSCOPEFILES ] && [ $CSCOPEFILESSZ -gt 0 ]; then
    echo "generated cscope files database"
else
    echo "cscope.files not generated or empty"
    exit 1
fi

#
# Generate cscope database
#
if [ -x "/usr/local/bin/cscope" ]; then
    cscope -q -b -k cscope.files
    echo "generated cscope database"
else
    echo "cscope not found"
    exit 1
fi

#
# Generate tags file using extended ctags
#
if [ -x "/usr/local/bin/exctags" ]; then
    /usr/local/bin/exctags -R /usr/src
    echo "generated tags database"
else
    echo "exctags not found"
    exit 1
fi