From 8542895c95954f8bd015ba8436371a6bbdcf78c7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20Ankarstr=C3=B6m?= <john@ankarstrom.se>
Date: Sat, 10 Jul 2021 17:35:21 +0200
Subject: Rename project to ref

---
 greet.ms |   2 +-
 re       | 136 ---------------------------------------------------------------
 re.tmac  |  50 -----------------------
 ref      | 136 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 ref.tmac |  50 +++++++++++++++++++++++
 5 files changed, 187 insertions(+), 187 deletions(-)
 delete mode 100755 re
 delete mode 100644 re.tmac
 create mode 100755 ref
 create mode 100644 ref.tmac

diff --git a/greet.ms b/greet.ms
index 99c9de1..5368ede 100644
--- a/greet.ms
+++ b/greet.ms
@@ -1,4 +1,4 @@
-.so re.tmac
+.so ref.tmac
 .TL
 .BI greet ,
 an example C program
diff --git a/re b/re
deleted file mode 100755
index 415de0f..0000000
--- a/re
+++ /dev/null
@@ -1,136 +0,0 @@
-#!/usr/bin/perl
-
-# re -- reference-based literate programming system
-
-use strict;
-use warnings;
-use POSIX::Regex qw/:all/;
-
-my $bytes;
-my $count;
-my %bytes;           # file => current byte
-my %file_locations;  # file => [location, ...]
-my %files;           # byte => file
-my %handles;         # file => handle
-my %lines;           # file => current line
-my %locations;       # byte => location (i.e. byte in source file)
-my @references;
-
-die "usage: $0 file\n" if @ARGV != 1;
-open my $fh, '<', $ARGV[0] or die "could not open $ARGV[0]: $!\n";
-
-# collect references
-$bytes = 0;
-while (<$fh>) {
-	$bytes += length($_);
-	push @references, [$bytes, $1] if /^\.\s*Re\s+(.*)/;
-}
-
-# find referenced locations
-for (@references) {
-	my ($bytes, $ref) = @$_;
-	my $loc = -1;
-
-	goto invalid if not $ref =~ /^([^:]+):(.*)/;
-	my ($file, $ident) = ($1, $2);
-
-	if (not exists $handles{$file}) {
-		open my $fh, '<', $file or die "could not open $file: $!\n";
-		$handles{$file} = $fh;
-		$bytes{$file} = 0;
-		$lines{$file} = 0;
-	}
-
-	if ($ident =~ /^(\d+)$/) {
-		my $line = $1;
-		if ($ident <= $lines{$file}) {
-			seek $handles{$file}, 0, 0;
-			$bytes{$file} = 0;
-			$lines{$file} = 0;
-		}
-		local $_;
-		while ($_ = readline $handles{$file}) {
-			$lines{$file}++;
-			if ($lines{$file} == $line) {
-				$loc = $bytes{$file};
-				last;
-			}
-			$bytes{$file} += length($_);
-		}
-	} elsif ($ident =~ m{^/(.*)/$}) {
-		my $rx = new POSIX::Regex($1);
-		seek $handles{$file}, 0, 0;
-		$bytes{$file} = 0;
-		$lines{$file} = 0;
-		local $_;
-		while ($_ = readline $handles{$file}) {
-			$lines{$file}++;
-			chomp;
-			if ($rx->match($_)) {
-				$loc = $bytes{$file};
-				last;
-			}
-			$bytes{$file} += length($_)+1;
-		}
-	} else {
-		goto invalid;
-	}
-
-	die "could not find location $ident in $file\n" if $loc == -1;
-	$locations{$bytes} = $loc;
-	$files{$bytes} = $file;
-	if (exists $file_locations{$file}) {
-		push @{$file_locations{$file}}, $loc;
-	} else {
-		$file_locations{$file} = [];
-	}
-
-	next;
-invalid:
-	die "invalid syntax: $ref at $bytes\n";
-}
-
-# intertwine
-seek $fh, 0, 0;
-$bytes = 0;
-$count = 0;
-while (<$fh>) {
-	$bytes += length($_);
-	goto normal if not @references;
-	my $ref_bytes = $references[0][0];
-	if ($bytes == $ref_bytes) {
-		shift @references;
-		my $file = $files{$bytes};
-		my $end = shift @{$file_locations{$file}} || '';
-		my $loc = $locations{$bytes};
-
-		print ".Sr $file $loc-$end\n";
-
-		seek $handles{$file}, $loc, 0;
-		local $_;
-		my $bytes = $loc;
-		while ($_ = readline $handles{$file}) {
-			$bytes += length($_);
-			last if $end and $bytes > $end;
-			/^(\s*)/; my $indent = $1;
-			my $max = 64;
-			for (split //, $indent) {
-				$max -= 7 if /\t/;
-			}
-			s/(.{$max})(.{6,})/$1\\fR...\\fP\n$indent\t$2/g;
-			s/\\/\\\\/g;
-			s/\\\\fR...\\\\fP/\\fR...\\fP/g;
-			s/^\./\\&./m;
-			print;
-		}
-
-		print ".Se\n";
-
-		next;
-	}
-normal:
-	print;
-}
-
-close $_ for values %handles;
-close $fh;
diff --git a/re.tmac b/re.tmac
deleted file mode 100644
index 1bf5a92..0000000
--- a/re.tmac
+++ /dev/null
@@ -1,50 +0,0 @@
-.\" configurable options
-.\" --------------------
-.ds Sf C		\" font
-.nr Sp 8p		\" point size
-.nr Sv 11p		\" vertical spacing (leading)
-.nr St 8n		\" tab width
-.nr Tl 2i		\" line length for text portions
-.nr Td 0.7v		\" distance between text portions
-.
-.\" setup
-.\" -----
-.nr _L \n(LL		\" save original line length
-.
-.\" macro definitions
-.\" -----------------
-.eo
-.\" Sr -- source code begin
-.de Sr
-. br
-. mk c			\" vertical position where text ends
-. if (\nb > \nc) .sp (\nbu - \ncu)
-. if (\nb > 0) .if ((\nc + 1p) > \nb) .sp \n(Tdu
-. if !(\nz = 1) .if (\np > 0) .if (\n% > \np) .sp -(\nbu - \ncu - 1.5v)
-. nf
-. ft \*(Sf
-. ps \n(Spu
-. vs \n(Svu
-. ta \n(Stu +\n(Stu +\n(Stu +\n(Stu +\n(Stu +\n(Stu
-. in (\n(Tlu + 0.2i)
-. mk a			\" vertical position where source code begins
-. nr p \n%		\" current page number
-..
-.\" Se -- source code end
-.de Se
-. mk b			\" vertical position where source code ends
-. rt \nau
-. nr LL \n(Tl
-. nr z 0
-. if (\n% > \np) \{
-.  rt \n(HMu		\" return to top of new page
-.  nr z 1		\" signal page break
-. \}
-. ns			\" ignore space before text (like that added by LP/PP)
-. LP
-..
-.\" Rr -- reset document settings
-.de Rr
-.nr LL \n(_L
-..
-.ec
diff --git a/ref b/ref
new file mode 100755
index 0000000..7322246
--- /dev/null
+++ b/ref
@@ -0,0 +1,136 @@
+#!/usr/bin/perl
+
+# ref -- reference-based literate programming system
+
+use strict;
+use warnings;
+use POSIX::Regex qw/:all/;
+
+my $bytes;
+my $count;
+my %bytes;           # file => current byte
+my %file_locations;  # file => [location, ...]
+my %files;           # byte => file
+my %handles;         # file => handle
+my %lines;           # file => current line
+my %locations;       # byte => location (i.e. byte in source file)
+my @references;
+
+die "usage: $0 file\n" if @ARGV != 1;
+open my $fh, '<', $ARGV[0] or die "could not open $ARGV[0]: $!\n";
+
+# collect references
+$bytes = 0;
+while (<$fh>) {
+	$bytes += length($_);
+	push @references, [$bytes, $1] if /^\.\s*Re\s+(.*)/;
+}
+
+# find referenced locations
+for (@references) {
+	my ($bytes, $ref) = @$_;
+	my $loc = -1;
+
+	goto invalid if not $ref =~ /^([^:]+):(.*)/;
+	my ($file, $ident) = ($1, $2);
+
+	if (not exists $handles{$file}) {
+		open my $fh, '<', $file or die "could not open $file: $!\n";
+		$handles{$file} = $fh;
+		$bytes{$file} = 0;
+		$lines{$file} = 0;
+	}
+
+	if ($ident =~ /^(\d+)$/) {
+		my $line = $1;
+		if ($ident <= $lines{$file}) {
+			seek $handles{$file}, 0, 0;
+			$bytes{$file} = 0;
+			$lines{$file} = 0;
+		}
+		local $_;
+		while ($_ = readline $handles{$file}) {
+			$lines{$file}++;
+			if ($lines{$file} == $line) {
+				$loc = $bytes{$file};
+				last;
+			}
+			$bytes{$file} += length($_);
+		}
+	} elsif ($ident =~ m{^/(.*?)/?$}) {
+		my $rx = new POSIX::Regex($1);
+		seek $handles{$file}, 0, 0;
+		$bytes{$file} = 0;
+		$lines{$file} = 0;
+		local $_;
+		while ($_ = readline $handles{$file}) {
+			$lines{$file}++;
+			chomp;
+			if ($rx->match($_)) {
+				$loc = $bytes{$file};
+				last;
+			}
+			$bytes{$file} += length($_)+1;
+		}
+	} else {
+		goto invalid;
+	}
+
+	die "could not find location $ident in $file\n" if $loc == -1;
+	$locations{$bytes} = $loc;
+	$files{$bytes} = $file;
+	if (exists $file_locations{$file}) {
+		push @{$file_locations{$file}}, $loc;
+	} else {
+		$file_locations{$file} = [];
+	}
+
+	next;
+invalid:
+	die "invalid syntax: $ref at $bytes\n";
+}
+
+# intertwine
+seek $fh, 0, 0;
+$bytes = 0;
+$count = 0;
+while (<$fh>) {
+	$bytes += length($_);
+	goto normal if not @references;
+	my $ref_bytes = $references[0][0];
+	if ($bytes == $ref_bytes) {
+		shift @references;
+		my $file = $files{$bytes};
+		my $end = shift @{$file_locations{$file}} || '';
+		my $loc = $locations{$bytes};
+
+		print ".Sr \"$file\" $loc $end\n";
+
+		seek $handles{$file}, $loc, 0;
+		local $_;
+		my $bytes = $loc;
+		while ($_ = readline $handles{$file}) {
+			$bytes += length($_);
+			last if $end and $bytes > $end;
+			/^(\s*)/; my $indent = $1;
+			my $max = 64;
+			for (split //, $indent) {
+				$max -= 7 if /\t/;
+			}
+			s/(.{$max})(.{6,})/$1\\fR...\\fP\n$indent\t$2/g;
+			s/\\/\\\\/g;
+			s/\\\\fR...\\\\fP/\\fR...\\fP/g;
+			s/^\./\\&./m;
+			print;
+		}
+
+		print ".Se\n";
+
+		next;
+	}
+normal:
+	print;
+}
+
+close $_ for values %handles;
+close $fh;
diff --git a/ref.tmac b/ref.tmac
new file mode 100644
index 0000000..1bf5a92
--- /dev/null
+++ b/ref.tmac
@@ -0,0 +1,50 @@
+.\" configurable options
+.\" --------------------
+.ds Sf C		\" font
+.nr Sp 8p		\" point size
+.nr Sv 11p		\" vertical spacing (leading)
+.nr St 8n		\" tab width
+.nr Tl 2i		\" line length for text portions
+.nr Td 0.7v		\" distance between text portions
+.
+.\" setup
+.\" -----
+.nr _L \n(LL		\" save original line length
+.
+.\" macro definitions
+.\" -----------------
+.eo
+.\" Sr -- source code begin
+.de Sr
+. br
+. mk c			\" vertical position where text ends
+. if (\nb > \nc) .sp (\nbu - \ncu)
+. if (\nb > 0) .if ((\nc + 1p) > \nb) .sp \n(Tdu
+. if !(\nz = 1) .if (\np > 0) .if (\n% > \np) .sp -(\nbu - \ncu - 1.5v)
+. nf
+. ft \*(Sf
+. ps \n(Spu
+. vs \n(Svu
+. ta \n(Stu +\n(Stu +\n(Stu +\n(Stu +\n(Stu +\n(Stu
+. in (\n(Tlu + 0.2i)
+. mk a			\" vertical position where source code begins
+. nr p \n%		\" current page number
+..
+.\" Se -- source code end
+.de Se
+. mk b			\" vertical position where source code ends
+. rt \nau
+. nr LL \n(Tl
+. nr z 0
+. if (\n% > \np) \{
+.  rt \n(HMu		\" return to top of new page
+.  nr z 1		\" signal page break
+. \}
+. ns			\" ignore space before text (like that added by LP/PP)
+. LP
+..
+.\" Rr -- reset document settings
+.de Rr
+.nr LL \n(_L
+..
+.ec
-- 
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