txt2pdf

#!/bin/bash
#
# Convert text to pdf for pretty print
#
# usage: txt2pdf [option] txtfile [pdffile]
#
# options:
#   -u, --use-paps
#       use paps (instead of default enscript) to generate pdf. If used, all
#       other options will be ignored.
#   -C, --line-numbers
#       add line numbers to output file.
#   -s, --code-print
#       generate output for source codes (includes line numbers as default).
#   -f, --font <name>
#       Select a font that is used for the body text. The default body font is
#       Helvetica10
#
# History:
# 2018-08-02 beta release   yaswant.pradhan
# -----------------------------------------------------------------------------

OPT=
FONT=Helvetica10
while [[ $1 == -* ]]; do
  case "$1" in
    -C|--line-numbers) OPT="${OPT} -C "; shift 1;;
    -u|--use-paps) USE_PAPS=1; shift 1;;
    -s|--code-print) CODE_PRINT=1; shift 1;;
    -f|--font) FONT="$2"; shift 2;;
    --) shift; break;;
    -*) echo "invalid option: $1" 1>&2; exit 1;;
  esac
done

INPUT="$1"
PDIR="${TMPDIR}/txt2pdf"
OPEN_PDF=evince

# check to make sure that enscript and ps2pdf are both installed
if ! command -v enscript >/dev/null || ! command -v ps2pdf >/dev/null; then
  echo "ERROR: both enscript and ps2pdf must be installed" 1>&2
  exit 1
fi

# create temp dir if it does not exist
if [ ! -d "$PDIR" ]; then
  mkdir -p "$PDIR" 2>/dev/null
  if [ $? -ne 0 ]; then
    echo "Unable to make directory '$PDIR'" 1>&2
    exit 2
  fi
fi

tmpfile="$(mktemp $PDIR/txt2pdf_XXXXXXXX.pdf)"

if (( $USE_PAPS )); then
  paps --font="Helvetica 10" --paper A4 --header $INPUT - 2>/dev/null \
    | ps2pdf - $tmpfile
else
  ENS_FMT=" --font=$FONT --header-font=Courier9 --media=A4 "
  ENS_FMT="$ENS_FMT --color --word-wrap --margins=25:25:-5:25 -T 4 "
  HDR_FMT="$INPUT|%F|Page $% of $= "

  if [[ "$INPUT" ]]; then
	# Read input from file
    (( $CODE_PRINT )) \
      && ENS_FMT=" -G1 -C --media A4 -U2 " \
      && HDR_FMT="|$INPUT|"

    cat $INPUT \
      | iconv -f utf-8 -t iso-8859-1//TRANSLIT \
      | enscript $OPT $ENS_FMT --header="$HDR_FMT" -X 88591 -o - 2>/dev/null \
      | ps2pdf - $tmpfile
  else
		# Read input from stdin (convert to ascii//TRANSLIT or
		# iso-9959-1//TRANSLIT) as enscript dont support utf-8
		echo "Converting to PDF ..."
    iconv -f utf-8 -t iso-8859-1//TRANSLIT - \
      | enscript $OPT $ENS_FMT -o - 2>/dev/null \
      | ps2pdf - $tmpfile
  fi
fi

$OPEN_PDF $tmpfile >/dev/null 2>&1 &
sleep 1
rm $tmpfile