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Top Forums Shell Programming and Scripting best way for removing comment from ruby program Post 302349636 by thegeek on Tuesday 1st of September 2009 11:53:00 AM
Old 09-01-2009
If i have not communicated the requirement correctly, let me do it now.

I can write Perl programs to remove the comment, but it is tough to handle all the cases such as,
1. removing single line comment,
2. removing multi line comment,
3. removing comments which are in the side of code

It should not remove the code wrongly, because in ruby,
1. we can access variables using #.
2. A string which can contain # in it.
And lot other cases which i dont know. As i want to use this way for a sensitive application, the implementation which i do should not affect the code.

So i want to know about a proven tool or best method to remove source from ruby/rails program. Where as for php we have two standard ways as -w option, or a function in php can parse and give the tokens.

For perl, removing comment in perl is by"perltidy -dac".

I am searching for such a standard way for ruby/rails. Thanks for your time.
 

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PPI::Token::Comment(3pm)				User Contributed Perl Documentation				  PPI::Token::Comment(3pm)

NAME
PPI::Token::Comment - A comment in Perl source code INHERITANCE
PPI::Token::Comment isa PPI::Token isa PPI::Element SYNOPSIS
# This is a PPI::Token::Comment print "Hello World!"; # So it this $string =~ s/ foo # This, unfortunately, is not :( bar /w; DESCRIPTION
In PPI, comments are represented by "PPI::Token::Comment" objects. These come in two flavours, line comment and inline comments. A "line comment" is a comment that stands on its own line. These comments hold their own newline and whitespace (both leading and trailing) as part of the one "PPI::Token::Comment" object. An inline comment is a comment that appears after some code, and continues to the end of the line. This does not include whitespace, and the terminating newlines is considered a separate PPI::Token::Whitespace token. This is largely a convenience, simplifying a lot of normal code relating to the common things people do with comments. Most commonly, it means when you "prune" or "delete" a comment, a line comment disappears taking the entire line with it, and an inline comment is removed from the inside of the line, allowing the newline to drop back onto the end of the code, as you would expect. It also means you can move comments around in blocks much more easily. For now, this is a suitably handy way to do things. However, I do reserve the right to change my mind on this one if it gets dangerously anachronistic somewhere down the line. METHODS
Only very limited methods are available, beyond those provided by our parent PPI::Token and PPI::Element classes. line The "line" accessor returns true if the "PPI::Token::Comment" is a line comment, or false if it is an inline comment. SUPPORT
See the support section in the main module. AUTHOR
Adam Kennedy <adamk@cpan.org> COPYRIGHT
Copyright 2001 - 2011 Adam Kennedy. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. perl v5.10.1 2011-02-26 PPI::Token::Comment(3pm)
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