[ Charset ISO-8859-1 unsupported, converting... ] > On 12/24/07, PRC <panruochen@xxxxxxxxx> wrote: > > Things are a little complicated. I've googled a sed script on: > > http://sed.sourceforge.net/grabbag/scripts/remccoms2.sh.txt > > > > But the script can't handle this testcase: > > printf("/* Haha \n"); /* Haha */ > > printf("// Haha \n"); // Haha > > > > I think a simple regular expression filter is not enough. A lexical parsing is required to ensure the results come out right in all cases. > > A prefessional utility is more suitable than a script written by me since I am not an expert in ANSI C standard. > > > > >AWK itself can do it, as can sed. > > > > > > > Here's an AWK solution for you: > > http://newsgroups.derkeiler.com/Archive/Comp/comp.lang.awk/2006-03/msg00200.html > > See if it suits your needs. For something like this, I think awk > might be more capable than sed... not sure, though. Perl does this very well. I'm certain awk and sed can also accomplish the task, though I haven't looked up your reference, and I don't have the manuals in front of me. perl -e 'undef $/; $i = <>; $i =~ s|/*.*?\*/||gsm; $i =~ s|//.*?\n||gsm; print $i;' <infile (To answer the OP's question, btw, cpp does not have an option to remove comments without preprocessing the input, IIRC.) -- Ctalk Home Page: http://www.ctalklang.org/
