First cut.

1 files changed, 47 insertions, 0 deletions

diff --git a/renumber.pl b/renumber.pl
new file mode 100755
index 0000000..bc2b6ab
--- /dev/null
+++ b/renumber.pl
@@ -0,0 +1,47 @@
+#!/usr/bin/env perl
+
+use v5.36;
+use warnings;
+use diagnostics;
+use strict;
+use utf8;
+use open qw(:std :encoding(UTF-8));
+use charnames ':full';
+
+my $width  = 12;
+my $height = 22;
+my $dblwidth = 2 * $width;
+
+my $lnr = 0;
+my $n   = $height;
+while (<>) {
+  chop;
+  ++$lnr;
+  if (/^STARTCHAR\s+[Uu]\+([[:xdigit:]]+)/) {
+    my $cp   = hex $1;
+    my $name = charnames::viacode ($cp) // '<no name>';
+    $_ = sprintf "STARTCHAR U+%04x %s", $cp, $name;
+  }
+  elsif (/^[[:digit:]]+ \|(.{$width})\|/) {
+    $_ = sprintf "%02d |%s|", $n--, $1;
+  }
+  elsif (/^[[:digit:]]+ \|(.{$dblwidth})\|/) {
+    $_ = sprintf "%02d |%s|", $n--, $1;
+  }
+  elsif (/^ENDCHAR$/) {
+    if ($n != 0) {
+      my $N = 22 - $n;
+      print STDERR
+        "line $lnr: ENDCHAR after $N bitmap rows, expected $height\n";
+      exit 1;
+    }
+    $n = $height;
+  }
+  else {
+    print STDERR "line $lnr: unrecognized input: '$_'\n";
+    exit 1;
+  }
+  print "$_\n";
+}
+
+# vi: set tabstop=2 shiftwidth=2 expandtab fileformat=unix: