08-25-2010
The only thing I don't like about that solution is it removes all the blank lines in the file also.
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1. UNIX for Dummies Questions & Answers
It may be a no-brainer, but the answer is escaping me right now:
I'm trying to write a little script to remove all comments from .c source... I was thinking sed, but I'm not a very strong regexp user (e.g. I suck with sed).
I tried dumping the file into:
sed -e 's/\/\* * \*\///g'
and several... (1 Reply)
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2. Shell Programming and Scripting
#! /bin/sed -nf
# Remove C and C++ comments, by Brian Hiles (brian_hiles@rocketmail.com)
# Sped up (and bugfixed to some extent) by Paolo Bonzini (bonzini@gnu.org)
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3. Shell Programming and Scripting
Suppose i have a file like this:
#bla bla
#bla bla bla bla bla
Bla
BLA
BLA BLA #bla bla
....
....
how can i remove all comments from every line,even if they are behind commands or strngs that are not comments?
any idea how i could do that using awk? (2 Replies)
Discussion started by: bashuser2
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4. Shell Programming and Scripting
I must write a script to change all C++ like comments:
// this is a comment
to this one
/* this is a comment */
How to do it by sed? With file:
#include <cstdio>
using namespace std; //one
// two
int main() {
printf("Example"); // three
}//four
the result should be: (2 Replies)
Discussion started by: black_hawk
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5. UNIX for Dummies Questions & Answers
Hi,
I am using BASH. How can I remove any lines in a text file that are either blank or begin with a # (ie. comments)? Thanks in advance.
Mike (3 Replies)
Discussion started by: msb65
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6. Shell Programming and Scripting
Hi everyone,
I've got a problem with converting C comments ( /* */ ) into C++ style ( // ) in some source file with sed. So far I've dealt with comments on one line, but I don't know how to convert when it is over multiple lines ...
So I already have something like this:
comments.sed
... (8 Replies)
Discussion started by: kolage
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7. Shell Programming and Scripting
I need to use sed to remove comments from files. I am using this, but it only works on comments that start at the beginning of the line.
sed /^"\/\/"/d
In most of the files I have comments like this:
code // Comments
or
tab // Comments (5 Replies)
Discussion started by: gravesit
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8. Shell Programming and Scripting
I would like to remove comments from a bash script. In addition, I would like to remove lines that consist of only white spaces, and to remove blank lines.
#!/bin/bash
perl -pe 's/ *#.*$//g' $1 | grep -v ^]*$ | perl -pe 's/ +/ /g' > $2
#
# $1 INFILE
# $2 OUTFILE
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9. UNIX for Dummies Questions & Answers
I have tried a lot, Need your help guys.
SAS Program:
data one ; /* Data step */
Input name $; /*Dec variables*/
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Discussion started by: saaisiva
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10. Shell Programming and Scripting
Hi , We need to remove comment like pattern from a code text. The possible comment expressions are as follows.
Input
BizComment : Special/*@
Name:bzt_53_3aea640a_51783afa_5d64_0
BizHidden:true
@*/
/* lookup Disease
Category Therapuetic Class */
a=b;... (6 Replies)
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LEARN ABOUT DEBIAN
css::minifier::xs
CSS::Minifier::XS(3pm) User Contributed Perl Documentation CSS::Minifier::XS(3pm)
NAME
CSS::Minifier::XS - XS based CSS minifier
SYNOPSIS
use CSS::Minifier::XS qw(minify);
$minified = minify($css);
DESCRIPTION
"CSS::Minifier::XS" is a CSS "minifier"; its designed to remove un-necessary whitespace and comments from CSS files, while also not
breaking the CSS.
"CSS::Minifier::XS" is similar in function to "CSS::Minifier", but is substantially faster as its written in XS and not just pure Perl.
METHODS
minify($css)
Minifies the given $css, returning the minified CSS back to the caller.
HOW IT WORKS
"CSS::Minifier::XS" minifies the CSS by removing un-necessary whitespace from CSS documents. Comment blocks are also removed, except when
(a) they contain the word "copyright" in them, or (b) they're needed to implement the "Mac/IE Comment Hack".
Internally, the minification is done by taking multiple passes through the CSS document:
Pass 1: Tokenize
First, we go through and parse the CSS document into a series of tokens internally. The tokenizing process does not check to make sure
that you've got syntactically valid CSS, it just breaks up the text into a stream of tokens suitable for processing by the subsequent
stages.
Pass 2: Collapse
We then march through the token list and collapse certain tokens down to their smallest possible representation. If they're still included
in the final results we only want to include them at their shortest.
Whitespace
Runs of multiple whitespace characters are reduced down to a single whitespace character. If the whitespace contains any "end of line"
(EOL) characters, then the end result is the first EOL character encountered. Otherwise, the result is the first whitespace character
in the run.
Comments
Comments implementing the "Mac/IE Comment Hack" are collapsed down to the smallest possible comment that would still implement the hack
("/**/" to start the hack, and "/**/" to end it).
Pass 3: Pruning
We then go back through the token list and prune and remove un-necessary tokens.
Whitespace
Wherever possible, whitespace is removed; before+after comment blocks, and before+after various symbols/sigils.
Comments
Comments that either (a) are needed to implement the "Mac/IE Comment Hack", or that (b) contain the word "copyright" in them are
preserved. All other comments are removed.
Symbols/Sigils
Semi-colons that are immediately followed by a closing brace (e.g. ";}") are removed; semi-colons are needed to separate multiple
declarations, but aren't required at the end of a group.
Everything else
We keep everything else; identifiers, quoted literal strings, symbols/sigils, etc.
Pass 4: Re-assembly
Lastly, we go back through the token list and re-assemble it all back into a single CSS string, which is then returned back to the caller.
AUTHOR
Graham TerMarsch (cpan@howlingfrog.com)
REPORTING BUGS
Please report bugs via RT (<http://rt.cpan.org/Dist/Display.html?Queue=CSS::Minifier::XS>), and be sure to include the CSS that you're
having troubles minifying.
COPYRIGHT
Copyright (C) 2007-2010, Graham TerMarsch. All Rights Reserved.
This is free software; you can redistribute it and/or modify it under the same license as Perl itself.
SEE ALSO
"CSS::Minifier".
perl v5.14.2 2011-11-15 CSS::Minifier::XS(3pm)