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add comment-stripper and line-joiner for C

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This commit is contained in:
Connor Olding 2019-07-12 08:37:18 -07:00
parent 7df579c722
commit d18e4a5f91
1 changed files with 16 additions and 0 deletions
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sh/noccom Normal file
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#!/bin/sh
# the first expression is taken from this FAQ:
# https://perldoc.perl.org/perlfaq6.html#How-do-I-use-a-regular-expression-to-strip-C-style-comments-from-a-file%3f
noccom() {
[ -s ~/opt/local/bin/noccom ] || cat > ~/opt/local/bin/noccom <<EOF
#!/usr/bin/env perl
$/ = undef;
\$_ = <>;
s#/\\*[^*]*\\*+([^/*][^*]*\\*+)*/|//([^\\\\]|[^\\n][\\n]?)*?\\n|("(\\\\.|[^"\\\\])*"|'(\\\\.|[^'\\\\])*'|.[^/"'\\\\]*)#defined \$3 ? \$3 : ""#gse;
s#|\\\\?\\n\\s*([{}])?\\s*(;*)\\s*(?=\\\\?\\n)|("(?:\\\\.|[^"\\\\])*"|'(?:\\\\.|[^'\\\\])*'|.[^/"'\\\\\\n]*)#defined \$3?\$3:defined \$1?" ".\$1.\$2:\$2#gse;
s#^(\\s*\\n)+##s;
print;
EOF
perl ~/opt/local/bin/noccom "$@"
}
noccom "$@"