vrename - change signal names across many Verilog files

       vrename takes the following arguments:

       --help
           Displays this message and program version and exits.

       --version
           Displays program version and exits.

       --change
           Take  the  signals file signals.vrename in the current directory and change the signals in the design
           as specified by the signals file.  Either --list or --change must be specified.

       --changefile {file}
           Use the given filename instead of "signals.vrename".

       --changelang
           Include in the signals.vrename file the template needed to change the language standard for the file.
           For the first run, use "--list --changelang" and --language to specify the file's original  language,
           then  rerun  with  the "--change" option.  The files will get escaped identifiers for the most recent
           Verilog standard.  For example with --language 1364-2005, "do" will become "\do ".

       --crypt
           With --list, randomize the signal renames.  With --change, compress spaces  and  comments  and  apply
           those renames listed in the file (presumably created with vrename --list --crypt).

           The  comment  /*ENCRYPT_ME*/  must  be  included  in  all files that need to be encrypted, or use the
           --cryptall flag.  If a signal should not be encrypted, it can simply be set  in  the  signals.vrename
           list to be changed to itself.  After encrypting, you may want to save the signals.vrename file so you
           have  a  key for decoding, and also so that it may be used for the next encryption run.  When used in
           this way for the next  encryption  run,  only  new  signals  will  get  new  encryptions,  all  other
           encryptions will be encrypted the same.

       --cryptall
           As  with  --crypt,  but  put  cryptic  names  into  signals.vrename even if the file does not include
           ENCRYPT_ME.  Generally you will then need to edit the signals.vrename file manually  to  exclude  any
           top level signals that should be preserved.

       --keywords
           Include  keywords  in  the  renaming list.  Default is to ignore keywords, as changing a keyword will
           probably result in unrunnable code, however, occasionally it may be necessary to rename signals which
           happen to match the name of keywords recently added to the language (such as 'bit').

       --language <1364-1995|1364-2001|1364-2005|1800-2005|1800-2009|1800-2012|1800-2017|1800-2023>
           Set the language standard for the files.  This determines which tokens are signals  versus  keywords,
           such as the ever-common "do" (data-out signal, versus a do-while loop keyword).

       --list
           Create  a list of signals in the design and write to signals.vrename.  Either --list or --change must
           be specified.

       --nowrite
           Don't write the actual changes, just report the files that would be changed.

       --o {dir}
           Use the given directory for output instead of the current directory.

       --read
           Read the changes list, allows --list to append to the changes already read.

       --xref
           Include a cross reference of where the signals are used.  --list must also be specified.

       Wilson Snyder <wsnyder@wsnyder.org>

       Vrename will allow a signal to be changed across all levels of the design hierarchy, or to create a cross
       reference of signal names.  (It actually includes module names, macros, and other definitions, so those
       can be changed too.)

       Vpm uses a three step process.  First, use

           vrename --list  [<file.v>...]  [<directory>....]

       This reads the specified files, or all files below the specified directory, and creates a signals.vrename
       file.

       Now, edit the signals.vrename file manually to specify the new signal names.  Then, use

           vrename --change [<file.v>...]  [<directory>....]

       Note that in the signals.vrename file any signal names including special characters must follow Verilog
       naming rules in that they must be escaped with a leading backslash and trailing space.  Vrename will
       attempt to preserve spacing when changing escaped to non-escaped names and vice-versa, however in some
       cases extra whitespace may be inserted to ensure proper downstream parsing.

       Verilog-Perl is part of the <https://www.veripool.org/> free Verilog EDA software tool suite.  The latest
       version is available from CPAN and from <https://www.veripool.org/verilog-perl>.

       Copyright 2000-2024 by Wilson Snyder.  This package is free software;  you  can  redistribute  it  and/or
       modify  it under the terms of either the GNU Lesser General Public License Version 3 or the Perl Artistic
       License Version 2.0.

       vrename - change signal names across many Verilog files

       Verilog-Perl, Verilog::Parser

perl v5.40.0                                       2024-10-20                                        VRENAME(1p)

         vrename <filename_or_directory>...