csgrep: Search cscope and provide output similar enough to grep for M-x grep, :grep, etc.

csgrep.sh

#!/bin/bash

if [[ ! -f cscope.out ]]; then
    print -u2 "No cscope.out"
    exit 1
fi

# Common to all versions
modes[0]="symbol"; SYMBOL=0
modes[1]="definition of"; DEFINITION=1
modes[2]="functions called by"; CALLED=2
modes[3]="functions calling"; CALLING=3

DBVERSION=$(nawk '{print $2; exit}' cscope.out)
# If the file version is '13' we're looking at a cscope-fast file, if it's greater it's cscope
if (( $DBVERSION < 13 )); then
    CSCOPE=/opt/SUNWspro/bin/cscope
    modes[7]="file"; FILE=7
    modes[8]="files including"; INCLUDING=8
elif (( $DBVERSION == 13 )); then
    CSCOPE=/opt/onbld/bin/$(mach)/cscope-fast
    CSOPTS="-q"
    modes[4]="assignments to"; ASSIGNMENT=4
    modes[7]="file"; FILE=7
    modes[8]="files including"; INCLUDING=8
else
    CSCOPE=/usr/bin/cscope
    CSOPTS="-q"
    modes[7]="file"; FILE=7
    modes[8]="files including"; INCLUDING=8
    modes[9]="assignments to"; ASSIGNMENT=9
fi

MODE=$SYMBOL                          # Symbol search
while getopts "dCcafi" opt; do
    case $opt in
        d) MODE=$DEFINITION;;
        c) MODE=$CALLED;;
        C) MODE=$CALLING;;
        a) MODE=$ASSIGNMENT;;
        f) MODE=$FILE;;
        i) MODE=$INCLUDING;;
    esac
done

shift $(($OPTIND - 1))

if [[ -z $MODE ]]; then
    print -u2 "not supported by this cscope"
    exit 1
fi

echo "Searching for ${modes[MODE]} $1" >&2
$CSCOPE $CSOPTS -d -L${MODE} "$1" | nawk ' 
{   m=$0; 
    sub("[^ ]+ [^ ]+ [^ ]+ ", "", m); 
    printf("%s:%d: (%s) %s\n", $1, $3, $2, m); 
}'