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Linux: Convert Mac to UNIX Line Endings

I'm working with a project that has a bunch of ActionScript (.as) files with old Mac line endings (i.e. CR instead of LF). For some reason, I see a bunch of references to mac2unix online, but I don't see anything readily available in Debian packages.

I want to convert to UNIX line endings, but without screwing up DOS files, etc. That is, I want it to be somewhat intelligent. This is what I came up with. It finds all the ActionScript files, determines if they're using just CRs, and then converts them to UNIX format:
for i in $(find . -name '*.as' -exec file '{}' \; |
grep 'with CR line terminators' |
sed 's/:.*//g'); do
echo $i;
perl -pi -e 's/\r/\n/g;' "$i";
done
By the way, yes, that'll fit on one line ;)

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