140 lines
2.7 KiB
Perl
Vendored
140 lines
2.7 KiB
Perl
Vendored
#!/usr/bin/perl -- # -*- Perl -*-
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# this needs some cleanup...
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my $PSTOTEXT = "pstotext";
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my $pdf = shift @ARGV;
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my $index = "";
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my $inindex = 0;
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open (F, "$PSTOTEXT $pdf |");
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while (<F>) {
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if (/^<\/index/) {
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$index .= $_;
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$inindex = 0;
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}
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$inindex = 1 if /^<index/;
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if ($inindex) {
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$index .= $_ if /^\s*</;
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}
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}
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my $cindex = "";
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while ($index =~ /^(.*?)((<phrase role=\"pageno\">.*?<\/phrase>\s*)+)/s) {
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$cindex .= $1;
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$_ = $2;
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$index = $'; # '
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my @pages = m/<phrase role=\"pageno\">.*?<\/phrase>\s*/sg;
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# Expand ranges
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if ($#pages >= 0) {
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my @mpages = ();
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foreach my $page (@pages) {
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my $pageno = &pageno($page);
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if ($pageno =~ /^([0-9]+)[^0-9]([0-9]+)$/) { # funky -
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for (my $count = $1; $count <= $2; $count++) {
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push (@mpages, "<phrase role=\"$pageno\">$count</phrase>");
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}
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} else {
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push (@mpages, $page);
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}
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}
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@pages = sort rangesort @mpages;
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}
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# Remove duplicates...
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if ($#pages > 0) {
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my @mpages = ();
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my $current = "";
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foreach my $page (@pages) {
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my $pageno = &pageno($page);
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if ($pageno ne $current) {
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push (@mpages, $page);
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$current = $pageno;
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}
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}
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@pages = @mpages;
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}
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# Collapse ranges...
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if ($#pages > 1) {
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my @cpages = ();
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while (@pages) {
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my $count = 0;
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my $len = &rangelen($count, @pages);
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if ($len <= 2) {
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my $page = shift @pages;
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push (@cpages, $page);
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} else {
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my $fpage = shift @pages;
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my $lpage = "";
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while ($len > 1) {
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$lpage = shift @pages;
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$len--;
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}
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my $fpno = &pageno($fpage);
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my $lpno = &pageno($lpage);
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$fpage =~ s/>$fpno</>${fpno}-$lpno</s;
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push (@cpages, $fpage);
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}
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}
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@pages = @cpages;
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}
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my $page = shift @pages;
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$page =~ s/\s*$//s;
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$cindex .= $page;
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while (@pages) {
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$page = shift @pages;
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$page =~ s/\s*$//s;
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$cindex .= ", $page";
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}
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}
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$cindex .= $index;
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print "$cindex\n";
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sub pageno {
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my $page = shift;
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$page =~ s/^<phrase.*?>//;
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$page =~ s/^<link.*?>//;
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return $1 if $page =~ /^([^<>]+)/;
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return "?";
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}
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sub rangesort {
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my $apno = &pageno($a);
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my $bpno = &pageno($b);
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# Make sure roman pages come before arabic ones, otherwise sort them in order
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return -1 if ($apno !~ /^\d+/ && $bpno =~ /^\d+/);
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return 1 if ($apno =~ /^\d+/ && $bpno !~ /^\d+/);
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return $apno <=> $bpno;
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}
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sub rangelen {
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my $count = shift;
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my @pages = @_;
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my $len = 1;
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my $inrange = 1;
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my $current = &pageno($pages[$count]);
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while ($count < $#pages && $inrange) {
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$count++;
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my $next = &pageno($pages[$count]);
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if ($current + 1 eq $next) {
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$current = $next;
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$inrange = 1;
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$len++;
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} else {
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$inrange = 0;
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}
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}
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return $len;
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}
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