#!/usr/bin/perl -s-	 # -*-Perl-*-

#---------------------------------------------------------------------

#The following script file is useful to convert old theory files into a

#style consistent with new naming conventions. Now, the names of the

#files must be the same as the names of the theories they define (with

#a ".thy" suffix) and corresponding ML files must also be renamed.

#

#To make this renaming easier, the following perl script can be used.

#It traverses the given directory recursively.  For each file of the

#form abc.thy, this script does the following steps:

#

#1. Reads the file and grabs the first identifier, say Abc (skipping comments

#   (*...*) and white space).

#2. Outputs the commands needed to rename the file abc.thy to Abc.thy,

#   including the appropriate CVS commands.

#3. If abc.ML also exists, it outputs appropriate commands to rename it

#   to Abc.ML.

#

#These commands can be put into a file, which can then be executed.

#If you are not using cvs, use "grep" to extract just the "mv" commands.

#

#						- Sara Kalvala

#						  (sk@cl.cam.ac.uk)

#---------------------------------------------------------------------

open(MATCH_FILES, "find . -name \"*thy\" -print |");

foreach $each_match (<MATCH_FILES>) {

 chop($each_match);

 if($each_match =~ /(.*\/)(\w*)\.thy/) {$dirpart = $1;}

 else {print "something wrong with finding path!\n";

       $dirpart = "";}

 open (CONTENTS, $each_match);

 @readit = <CONTENTS>;

 chop(@readit); $oneline = join(" ",@readit);

 $oneline =~ s/\(\*([^\*]|(\*[^\)]))*\*\)//g ;

# comments: have to remove strings of anything but stars or stars

# followed by anything but right parenthesis 

 if($oneline =~ /\s*([^ ]*)\s*=.*/)

 {$th_name = $1;

  $new_name = $dirpart . $th_name . ".thy";

  print "mv -i $each_match $new_name \n";

  print "cvs rm $each_match ; cvs add $new_name \n";

# for ML files

  $each_ML = $each_match;

  $each_ML =~ s/.thy/.ML/;

  if (-e $each_ML) { $new_ML = $dirpart . $th_name . ".ML";

		     print "mv -i $each_ML $new_ML \n";

		     print "cvs rm $each_ML ; cvs add $new_ML \n";}}

 else {print "something wrong with format of theory file!\n";}

}