Export latex project with a flat figure hierachy.

exportex.sh

#!/usr/bin/env bash


set -u


usage() {
  cat <<EOF
Usage: "${BASH_SOURCE[0]##*/}" [options] [extra_file ...]

Export latex project with a flat figure hierachy.
Positional arguments are additional files that should be added to the exported zip.

Available options:
  -o, --output     Path to output zip file (default: "export.zip")
  -s, --sourcetex  Path to main .tex       (default: "main.tex")
  -b, --bibtex     Path to bibtex file     (default: "references.bib")
  -c, --compress   Compress PDF-figures with ghostscript (lossy)
  -k, --keepdir    Do not delete temporary output directory
      --logfigmap  Log figure path map
  -h, --help       Print this help and exit
  -v, --verbose    Print script debug info
EOF
  exit
}


die() {
  echo -e "${1:-"Error!"}" >&2
  exit "${2-1}"
}


parse_params() {
  keepdir=0
  compress=0
  output='export.zip'
  sourcetex='main.tex'
  sourcebib='references.bib'
  manifest=()
  logfigmap=

  while (($#)); do
    case "${1-}" in
        -h | --help) usage ;;
        -v | --verbose) set -x ;;
        -k | --keepdir) keepdir=1 ;;
        -c | --compress) compress=1 ;;
        -s | --source) sourcetex="${2-}"; shift ;;
        -b | --bibtex) sourcebib="${2-}"; shift ;;
        -o | --output) output="${2-}"; shift ;;
        --logfigmap) logfigmap="${2-}"; shift ;;
        --) manifest+=("${@:2}"); break ;;
        -*) die "Unknown option: ${1-}" ;;
        *) manifest+=("${1-}") ;;
    esac
    shift
  done

  [[ -z "${output}" ]] && die "Empty parameter: output"
  [[ -z "${sourcetex}" ]] && die "Empty parameter: source"
  [[ -z "${sourcebib}" ]] && die "Empty parameter: bibtex"

  return 0
}


pdfcp() {
    gs -dBATCH -dNOPAUSE -q -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -sOutputFile="${2}" "${1}"
}


main_export(){
    OUTDIR="${output}.temp"

    mkdir "$OUTDIR"

    MAIN="main_$(date '+%Y%m%d%H%M%S')"
    basesourcebib="${sourcebib##*/}"
    # copy main, strip comments and rename bibtex file
    sed -e '/^\s*%/d' -e 's/\([^\\]%\).*$/\1/' -e "s#\\\\bibliography{${basesourcebib%%.bib}}#\\\\bibliography{${MAIN}}#" < "${sourcetex}" > "${OUTDIR}/${MAIN}.tex"
    cp "${sourcebib}" "${OUTDIR}/${MAIN}.bib"

    # copy manifest files
    for file in "${manifest[@]}"; do
        cp "${file}" "${OUTDIR}/${file##*/}"
    done

    # parse "${sourcetex}"
    mapfile -t FIGURES < <(sed -e '/\includegraphics/!d' -e '/ *\%/d' -e 's/^.*{\(.*\)}.*$/\1/g' < "${sourcetex}")

    # truncate logfigmap
    [ -n "${logfigmap}" ] && :>"${logfigmap}"

    # replace each filename in tex and copy the appropriate figure
    local -i figindex=0
    for file in "${FIGURES[@]}"; do
        newfile="$((figindex++))-${file##*/}"
        sed -i "s#${file}#${newfile}#g" "${OUTDIR}/${MAIN}.tex"
        ext="$(file --brief --extension "${file}")"
        if ((compress)) && [ "${ext}" == 'pdf' ]; then
            pdfcp "${file}" "${OUTDIR}/${newfile}"
        else
            cp "${file}" "${OUTDIR}/${newfile}"
        fi
        [ -n "${logfigmap}" ] && printf '%s\t%s\n' "$file" "$newfile" >> "${logfigmap}"
    done

    # add files to zip
    cd ${OUTDIR}
    zip -r "../${output}" .

    latexmk -silent -pdf "${MAIN}.tex"
    zip "../${output}" "${MAIN}.bbl"

    # delete temporary directory
    if ! ((keepdir)); then
        cd ..
        rm -rf "${OUTDIR}"
    fi
}

parse_params "$@"
main_export

exit 0