# -*- mode: Perl -*-
# /=====================================================================\ #
# |  svg                                                                | #
# | Implementation for LaTeXML                                          | #
# |=====================================================================| #
# | Part of LaTeXML:                                                    | #
# |  Public domain software, produced as part of work done by the       | #
# |  United States Government & not subject to copyright in the US.     | #
# |---------------------------------------------------------------------| #
# | Bruce Miller <bruce.miller@nist.gov>                        #_#     | #
# | http://dlmf.nist.gov/LaTeXML/                              (o o)    | #
# \=========================================================ooo==U==ooo=/ #
package LaTeXML::Package::Pool;
use strict;
use warnings;
use LaTeXML::Package;
use LaTeXML::Util::Pathname;
#======================================================================
# Make sure any future I/O security checks these changes to SEARCHPATHS!
DefPrimitive('\lx@set@path OptionalMatch:* {}', sub {
    my ($stomach, $star, $path) = @_;
    $path = ToString(Expand($path));
    if ($star) {    # * omits TEXINPUTS!
      AssignValue(SEARCHPATHS => [pathname_canonical($path)]); }
    else {
      AssignValue(SEARCHPATHS => [pathname_canonical($path), @{ LookupValue('SEARCHPATHS') }]); }
    return; });

DefPrimitive('\lx@append@path OptionalMatch:* {}', sub {
    my ($stomach, $star, $path) = @_;
    $path = ToString(Expand($path));
    if (my @paths = @{ LookupValue('SEARCHPATHS') }) {
      my $newpath = shift(@paths) . $path;
      if ($star) {    # * omits TEXINPUTS!
        AssignValue(SEARCHPATHS => [pathname_canonical($newpath)]); }
      else {
        AssignValue(SEARCHPATHS => [pathname_canonical($newpath), @paths]); } }
    return; });

DefMacro('\import OptionalMatch:* {}{}',       '{\lx@set@path #1{#2} \input{#3}}');
DefMacro('\includefrom OptionalMatch:* {}',    '{\lx@set@path #1{#2} \include{#3}}');
DefMacro('\subimport OptionalMatch:* {}{}',    '{\lx@append@path #1{#2} \input{#3}}');
DefMacro('\subincludefrom OptionalMatch:* {}', '{\lx@append@path #1{#2} \include{#3}}');
Let('\inputfrom',    '\import');
Let('\subinputfrom', '\subimport');

#======================================================================
1;

