how to remove c++ comments from a cpp file?

[Gabriel Genellina]

At Friday 26/1/2007 06:54, Frank Potter wrote:

>[CODE]
>import re
>
>f=open("show_btchina.user.js","r").read()
>f=unicode(f,"utf8")
>
>r=re.compile(ur"//[^\r\n]+$", re.UNICODE|re.VERBOSE)
>f_new=r.sub(ur"",f)
>
>open("modified.js","w").write(f_new.encode("utf8"))
>[/CODE]
>
>And, the problem is, it seems that only the last comment is removed.
>How can I remove all of the comments, please?

Note that it's not as easy as simply deleting from // to end of line, 
because those characters might be inside a string literal. But if you 
can afford the risk, this is a simple way without re:

f = open("show_btchina.user.js","r")
modf = open("modified.js","w")
for line in f:
     uline=unicode(line,"utf8")
     idx = uline.find("//")
     if idx==0:
         continue
     elif idx>0:
         uline = uline[:idx]+'\n'
     modf.write(uline.encode("utf8"))
modf.close()
f.close()


-- 
Gabriel Genellina
Softlab SRL 


	

	
		
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