1 #!/bin/bash

     2 

     3 # Relational pipes

     4 # Copyright © 2019 František Kučera (Frantovo.cz, GlobalCode.info)

     5 #

     6 # This program is free software: you can redistribute it and/or modify

     7 # it under the terms of the GNU General Public License as published by

     8 # the Free Software Foundation, version 3 of the License.

     9 #

    10 # This program is distributed in the hope that it will be useful,

    11 # but WITHOUT ANY WARRANTY; without even the implied warranty of

    12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

    13 # GNU General Public License for more details.

    14 #

    15 # You should have received a copy of the GNU General Public License

    16 # along with this program. If not, see <http://www.gnu.org/licenses/>.

    17 

    18 

    19 # Quite dirty hack to get some information about given PDF file

    20 # TODO: better field names, more stable API

    21 # TODO: call a PDF library rather than parse output of a commandline tool with human readable output

    22 

    23 if [[ $# == 0 ]]; then

    24 	echo "1";

    25 	if [[ "x$field" == "xPages" ]]; then echo "integer";

    26 	elif [[ -z "${field+x}" ]]; then echo "boolean";

    27 	else echo "string";

    28 	fi

    29 elif [[ -f "$1" || -d "$1" ]]; then

    30 	info="`pdfinfo -isodates "$1"`";

    31 	valid=$?;

    32 	if [[ "x$field" == "xPages" ]]; then

    33 		if [[ $valid == 0 ]]; then

    34 			echo "$info" | grep "^$field:" | sed -E 's/[^:]+:\s+(.*)/\1/g' | tr -d '\n';

    35 		else

    36 			printf 0;

    37 			# exit 40; # TODO: null

    38 		fi

    39 	elif [[ -z "${field+x}" ]]; then

    40 		if [[ $valid == 0 ]]; then printf "true"; else printf "false"; fi

    41 	else

    42 		echo "$info" | grep "^$field:" | sed -E 's/[^:]+:\s+(.*)/\1/g' | tr -d '\n';

    43 	fi

    44 else

    45 	exit 40;

    46 fi