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use strict;
use File::Basename;
my $root = $ENV{"rootFile"};
my $out = $ENV{"out"};
open OUT, ">$out" or die;
print OUT "[\n";
# We search for files relative to the root file. TODO: search
# relative to the paths in $TEXINPUTS.
die unless substr($root, 0, 1) eq "/";
my ($x, $path, $y) = fileparse($root);
$path =~ s/\/$//;
my @workset = ();
my %doneset = ();
push @workset, $root;
while (scalar @workset > 0) {
my $fn = pop @workset;
next if (defined $doneset{$fn});
$doneset{$fn} = 1;
next unless -e "$fn";
# Print out the full path *and* its relative path to $root.
die if substr($fn, 0, length $path) ne $path;
my $relFN = substr($fn, (length $path) + 1);
print OUT "$fn \"$relFN\"\n";
# If this is a TeX file, recursively find include in $fn.
next unless $fn =~ /.tex$/ or $fn =~ /.ltx$/;
open FILE, "< $fn" or die;
while (<FILE>) {
if (/\\input\{(.*)\}/) {
my $fn2 = $1;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
push @workset, $path . "/" . $fn2;
} elsif (/\\usepackage(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
push @workset, $path . "/" . $fn2 . ".sty";
} elsif (/\\documentclass(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
push @workset, $path . "/" . $fn2 . ".cls";
} elsif (/\\bibliography\{(.*)\}/) {
foreach my $bib (split /,/, $1) {
$bib =~ s/^\s+//; # remove leading / trailing whitespace
$bib =~ s/\s+$//;
push @workset, $path . "/" . $bib . ".bib";
}
} elsif (/\\includegraphics(\[.*\])?\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
push @workset, $path . "/" . $fn2 . ".pdf";
push @workset, $path . "/" . $fn2 . ".png";
push @workset, $path . "/" . $fn2 . ".ps";
} elsif (/\\pgfdeclareimage(\[.*\])?\{.*\}\{(.*)\}/) {
my $fn2 = $2;
die "absolute path! $fn2" if substr($fn2, 0, 1) eq "/";
push @workset, $path . "/" . $fn2 . ".pdf";
push @workset, $path . "/" . $fn2 . ".png";
push @workset, $path . "/" . $fn2 . ".jpg";
}
# !!! also support \usepackage
}
close FILE;
}
print OUT "]\n";
close OUT;
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