103 lines
1.4 KiB
Sed
103 lines
1.4 KiB
Sed
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#! /bin/sed -nf
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# Remove C and C++ comments, by Brian Hiles (brian_hiles@rocketmail.com)
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# Sped up (and bugfixed to some extent) by Paolo Bonzini (bonzini@gnu.org)
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# Works its way through the line, copying to hold space the text up to the
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# first special character (/, ", '). The original version went exactly a
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# character at a time, hence the greater speed of this one. But the concept
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# and especially the trick of building the line in hold space are entirely
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# merit of Brian.
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# Taken from http://sed.sourceforge.net/grabbag/scripts/remccoms3.sed
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# According to http://sed.sourceforge.net/grabbag/ it's in the public domain
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# Changes:
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# 2010-11-06: Remove strings
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:loop
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# This line is sufficient to remove C++ comments!
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/^\/\// s,.*,,
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# addition for coreboot-lint: For our purpose we don't need strings
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s,"[^"]*",,g
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/^$/{
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x
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p
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n
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b loop
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}
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/^"/{
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:double
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/^$/{
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x
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p
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n
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/^"/b break
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b double
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}
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H
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x
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s,\n\(.[^\"]*\).*,\1,
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x
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s,.[^\"]*,,
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/^"/b break
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/^\\/{
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H
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x
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s,\n\(.\).*,\1,
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x
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s/.//
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}
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b double
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}
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/^'/{
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:single
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/^$/{
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x
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p
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n
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/^'/b break
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b single
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}
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H
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x
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s,\n\(.[^\']*\).*,\1,
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x
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s,.[^\']*,,
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/^'/b break
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/^\\/{
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H
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x
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s,\n\(.\).*,\1,
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x
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s/.//
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}
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b single
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}
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/^\/\*/{
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s/.//
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:ccom
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s,^.[^*]*,,
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/^$/ n
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/^\*\//{
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s/..//
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b loop
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}
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b ccom
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}
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:break
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H
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x
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s,\n\(.[^"'/]*\).*,\1,
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x
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s/.[^"'/]*//
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b loop
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