locateref

#!/bin/bash

# The directory where this scrip resides
TDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
# Some configuration, which should define REFDIR
# shellcheck source=./tconfig
source "$TDIR/tconfig"

KEYWORDS="$*"
TIME=$(date +%Y.%m.%d-%H.%M.%S)
GOTREF="/tmp/gotref-$TIME"
READER=evince

KEYWORDS="$(echo "$KEYWORDS" | sed 's/{//g' | sed 's/}//g' | sed 's/(//g' | sed 's/)//g' | sed 's/\[//g' \
    | sed 's/\]//g' | sed "s/'//" | sed 's/"//g' | sed 's/`//g' | sed 's/^//g' | sed 's/~//g' \
    | sed 's/\\\\L/L/g' | sed 's/\\\\l/l/g' | sed 's/\\//g' | sed 's/^\s*//' | sed 's/\s*$//' \
    | sed 's/[^0-9a-zA-Z]/\n/g'\
    | tr '[:upper:]' '[:lower:]'\
    )"

if [[ -z "$KEYWORDS" ]]; then
    printf "No keyword received.\n"
    exit 1
fi

find "$REFDIR" -name "*" > "$GOTREF"

NUMBER_OF_MATCH=0
while IFS= read -r LINE
do
    MATCH=1
    LINE_LOWER_CASE=$(echo "$LINE" | tr '[:upper:]' '[:lower:]')
    for WORD in $KEYWORDS; do
        if ! echo "$LINE_LOWER_CASE" | grep -qF "$WORD"; then
            MATCH=0
            break
        fi
    done
    if [[ $MATCH -eq 1 ]]; then
        NUMBER_OF_MATCH=$((NUMBER_OF_MATCH+1))
        MATCHED_LINE="$LINE"
        printf "%s\n" "$LINE"
    fi
done < "$GOTREF"

if [[ $NUMBER_OF_MATCH -eq 0 ]]; then
    printf "No reference found.\n"
    exit 1
fi

if [[ $NUMBER_OF_MATCH -eq 1 ]]; then
    "$READER" "$MATCHED_LINE"
fi

rm "$GOTREF"

exit 0