convert *.csv to a TeX table

csv2tex.sh

#!/usr/bin/env bash
#
# Convert CSV file(s) to a TeX table.

# trap SIGINT
trap 'trap - INT; kill -s INT "$$"' INT

caption="Πειραματικά δεδομένα."
label_template="tab:"
out_template="tab-"

format_data() {
    cat $1 | perl -pe 's/,/\t\& /g;' -pe 's/\n/ \\\\\n/;'
}

format_content() {
    local ccs=$(yes 'c' | head -n ${col_num} | tr -d '\n')
    local label="${label_template}$1"
    cat <<EOF
\begin{table}[hbt]
\centering
\begin{tabular}{${ccs}}
\hline
EOF
    format_data "$1.csv" | sed '1 s/$/ \\hline\\hline/'
    cat <<EOF
\hline
\end{tabular}
\caption{\small ${caption}}
\label{${label}}
\end{table}
EOF
}

file() {
    local base=$(basename "$1" '.csv')
    local col_num=$(awk -F, '{print NF}' $1 | sort -nu | tail -n 1)
    format_content "${base}" ${col_num} > "${out_template}${base}.tex"
}

usage() {
    cat <<EOF
$(basename $0) <mode> <source>

 Usage:
$(basename $0) --file/-f <target>   convert <target> file
$(basename $0) --dir/-d <target>    convert all files in <target>
$(basename $0) --all                same thing as doing --dir .
EOF
}

main() {
    case $1 in
        --file|-f) file "$2" ;;
        --dir|-d)
            find "$2" -type f -name '*.csv' | while read f; do
                file "$f"
            done ;;
        --all|-a) main --dir . ;;
        *) usage ;;
    esac
}

main "$@"