Tool to generate man page from texinfo file.

diff --git a/texi2man b/texi2man
new file mode 100755 (executable)
index 0000000..d9206ba
--- /dev/null
+++ b/texi2man
@@ -0,0 +1,189 @@
+#!/usr/bin/perl
+# $Id$
+# Written by Adrian Mariano, additional features by Eric Backus,
+# yet more features by Tim Mann.
+
+# Script to translate a texinfo file into an nroff manual page.
+
+$version="1.01.tpm1";
+
+$html=0;
+$ignore=0;
+$tex=0;
+$doman=0;
+$title=0;
+$diditem=0;
+$justdidlp=1;
+$noman=0;
+$info=0;
+$manprefix="";
+$args=($#ARGV < 0) ? "stdin" : "@ARGV";
+$itemxcomma=0;
+
+printf(".\\\"Do not edit this file.  It was created from %s\n", $args);
+printf(".\\\"using texi2man version %s on %s", $version, `date`);
+printf(".\\\"If you want a typeset version, you will get better\n");
+printf(".\\\"results with the original file.\n.\\\"\n");
+
+sub parse
+{
+    if (s/\@c man //) { print; next; }
+    if (/\@c noman/) { $noman=1; next; }
+    if (/\@c end noman/) { $noman=0; next; }
+    if ($noman) { next; }
+
+    if (/\@c ifman\s*(.*)/) { $doman=1; $manprefix = $1; next; }
+    if (/\@c end ifman/) { $doman=0; $manprefix = ""; next; }
+
+    if (/^\\input/) { next; }
+    if (/^\*/) { next; }
+    if (/^INFO-DIR-SECTION/) { next; }
+    if (/^START-INFO-DIR-ENTRY/) { next; }
+    if (/^END-INFO-DIR-ENTRY/) { next; }
+
+    if (/\@titlepage/) { $title=1; next; }
+    if (/\@end titlepage/) { $title=0; next; }
+    if (/\@tex/) { $tex=1; next; }
+    if (/\@end tex/) { $tex=0; next; }
+    if (/\@ignore/) { $ignore=1; next; }
+    if (/\@end ignore/) { $ignore=0; next; }
+    if (/\@ifinfo/) { $info=1; next; }
+    if (/\@end ifinfo/) { $info=0; next; }
+    if (/\@ifhtml/) { $html=1; next; }
+    if (/\@end ifhtml/) { $html=0; next; }
+    if (/\@ifnothtml/) { next; }
+    if (/\@end ifhtml/) { next; }
+    if (/\@iftex/) { $tex=1; next; }
+    if (/\@end iftex/) { $tex=0; next; }
+    if (/\@ifnottex/) { next; }
+    if (/\@end iftex/) { next; }
+    if (!$doman && ($ignore || $html || $title || $tex || $info)) { next; }
+
+    s/\\/\\\\/g;
+    s/\@-/\\-/g;
+    s/\@cite\{([^}]*)}/\`$1\'/g;
+    s/\@code\{([^}]*)}/\`$1\'/g;
+    s/\@email\{([^}]*)}/\`$1\'/g;
+    s/\@file\{([^}]*)}/\`$1\'/g;
+    s/\@kbd\{([^}]*)}/\`$1\'/g;
+    s/\@samp\{([^}]*)}/\`$1\'/g;
+    s/\@url\{([^}]*)}/\`$1\'/g;
+    s/\@dfn\{([^}]*)}/\"$1\"/g;
+    s/\@key\{([^}]*)}/<$1>/g;
+    s/\@emph\{([^}]*)}/\\fI$1\\fR/g;
+    s/\@strong\{([^}]*)}/\\fB$1\\fR/g;
+    s/\@var\{([^}]*)}/\U$1\E/g;
+    s/\@sc\{([^}]*)}/\U$1\E/g;
+    s/\@w\{([^}]*)}/$1/g;
+    s/\@pxref\{([^}]*)}/See \\fI$1\\fR/g;
+    s/\@xref\{([^}]*)}/See \\fI$1\\fR/g;
+    s/\@ref\{([^}]*)}/\\fI$1\\fR/g;
+    s/\@footnote\{([^}]*)}/[$1]/g;
+    s/\@minus\{}/-/g;
+    s/\@copyright\{}/(C)/g;
+    s/\@noindent//;
+    s/\@\{/{/g;
+    s/\@}/}/g;
+    s/\@\@/@/g;
+    s/\\'\\'/\"/g;
+    s/\\`\\`/\"/g;
+    s/---/ -- /g;
+
+    s/\@value\{([^\s]+)}/$value{$1}/eg;
+    if (/\@set\s+([^\s]+)\s+(.*)$/) { $value{$1} = $2; next; }
+    if (/\@clear\s+([^\s]+)\s+(.*)$/) { delete $value{$1}; next; }
+
+    if ($itemxcomma) {
+        # If multiple items have the same description, put the items
+        # on one line, separated by commas
+        if (/\@itemx (.*)/) { printf(", $1"); $diditem=1; next; }
+        elsif ($diditem) { printf("\n"); $diditem=0; }
+       if (/\@item (.*)/) {
+           printf("%s.TP\n%s.B $1", $manprefix, $manprefix);
+           $diditem=1;
+           next;
+       }
+    } else {
+        # If multiple items have the same description, put the items
+        # on separate lines
+       if (/\@item (.*)/) {
+           printf("%s.TP\n%s.B $1\n", $manprefix, $manprefix);
+           next;
+       }
+       if (/\@itemx (.*)/) {
+           printf("%s.PD 0\n%s.TP\n%s.B $1\n%s.PD\n",
+                  $manprefix, $manprefix, $manprefix, $manprefix);
+           next;
+       }
+    }
+
+    if (s/\@chapter (.*)/.SH \U$1\E/)
+    {
+       printf("%s%s", $manprefix, $_);
+       $justdidlp=1;
+       next;
+    }
+    if (s/\@unnumbered (.*)/.SH \U$1\E/)
+    {
+       printf("%s%s", $manprefix, $_);
+       $justdidlp=1;
+       next;
+    }
+    if (s/\@section (.*)/$1/)
+    {
+       printf("%s.SS %s", $manprefix, $_);
+       $justdidlp=1;
+       next;
+    }
+
+    if (/\@example/) {
+       printf("%s.nf\n", $manprefix);
+       $manprefix = $manprefix . "    ";
+       $example=1;
+       next;
+    }
+    if (/\@end example/) {
+       $manprefix = substr($manprefix, 0, -4);
+       printf("%s.fi\n", $manprefix);
+       $example=0;
+       next;
+    }
+
+    if (/\@display/) { printf("%s.nf\n", $manprefix); $example=1; next; }
+    if (/\@end display/) { printf("%s.fi\n", $manprefix); $example=0; next; }
+    if (/\@format/) { printf("%s.nf\n", $manprefix); $example=1; next; }
+    if (/\@end format/) { printf("%s.fi\n", $manprefix); $example=0; next; }
+    if (/\@smallexample/) { printf("%s.nf\n", $manprefix); $example=1; next; }
+    if (/\@end smallexample/) { printf("%s.fi\n", $manprefix); $example=0; next; }
+    if (!$example && /^\s*$/ && !$doman)
+    {
+       if ($justdidlp) { next; }
+#      printf(".PP\n");
+       printf("\n");
+       $justdidlp=1;
+       next;
+    }
+    if (/\@end table/) {
+       printf("%s.PP\n", $manprefix);
+       $justdidlp=1;
+    }
+
+    if (/\@include (.*)/) {
+        open(my $INCL, $1) or open(my $INCL, "../$1") or die "$1: $!";
+        while (<$INCL>) {
+            parse();
+        }
+        next;
+    }
+
+    if (/^\@/) { next; }
+
+    printf("%s%s", $manprefix, $_);
+
+    if (!$doman) { $justdidlp=0; }
+}
+
+while(<>)
+{
+    parse();
+}