nixpkgs/pkgs/misc/tex/nix/find-includes.pl

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Perl
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use strict;
use File::Basename;
my $src = $ENV{"src"};
my $out = $ENV{"out"};
my $path = $ENV{"searchRelativeTo"};
open OUT, ">$out" or die;
print OUT "[\n";
open FILE, "< $src" or die;
sub addName {
my ($type, $name) = @_;
print OUT "{ type = \"$type\"; name = \"$name\"; }\n";
}
while (<FILE>) {
if (/\\input\{(.*)\}/) {
my $fn2 = $1;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "tex", "$fn2";
} elsif (/\\input (.*)$/) {
my $fn2 = $1;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "tex", "$fn2";
} elsif (/\\RequirePackage(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "misc", "$fn2.sty";
} elsif (/\\usepackage(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "misc", "$fn2.sty";
} elsif (/\\documentclass(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "misc", "$fn2.cls";
} elsif (/\\bibliographystyle\{(.*)\}/) {
my $fn2 = $1;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "misc", "$fn2.bst";
} elsif (/\\bibliography\{(.*)\}/) {
foreach my $bib (split /,/, $1) {
$bib =~ s/^\s+//; # remove leading / trailing whitespace
$bib =~ s/\s+$//;
addName "misc", "$bib.bib";
}
} elsif (/\\includegraphics(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "img", "$fn2";
} elsif (/\\pgfdeclareimage(\[.*\])?\{.*\}\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "img", "$fn2";
} elsif (/\\pgfimage(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
addName "img", "$fn2";
}
# !!! also support \usepackage
}
close FILE;
print OUT "]\n";
close OUT;