Re: phobos and splitting things... but not with whitespace.

[simendsjo]

On Sat, 23 Jun 2012 20:41:29 +0200, Chad J  
<chadjoan@__spam.is.bad__gmail.com> wrote:

IMO the "take away a single line" thing should be accomplishable with a  
single concise expression

This takes a range to match against, so much like startsWith:

auto findSplitAny(Range, Ranges...)(Range data, Ranges matches) {
    auto rest = data;
    for(; !rest.empty; rest.popFront()) {
        foreach(match; matches) {
            if(rest.startsWith(match)) {
                auto restStart = data.length-rest.length;
                auto pre = data[0..restStart];
                // we'll fetch it from the data instead of using the  
supplied
                // match to be consistent with findSplit
                auto dataMatch = data[restStart..restStart+match.length];
                auto post = rest[match.length..$];
                return tuple(pre, dataMatch, post);
            }
        }
    }
    return tuple(data, Range.init, Range.init);
}
unittest {
    auto text = "1\n2\r\n3\r4";

    auto res = text.findSplitAny("\r\n", "\n", "\r");
    assert(res[0] == "1");
    assert(res[1] == "\n");
    assert(res[2] == "2\r\n3\r4");

    res = res[2].findSplitAny("\r\n", "\n", "\r");
    assert(res[0] == "2");
    assert(res[1] == "\r\n");
    assert(res[2] == "3\r4");

    res = res[2].findSplitAny("\r\n", "\n", "\r");
    assert(res[0] == "3");
    assert(res[1] == "\r");
    assert(res[2] == "4");

    res = res[2].findSplitAny("\r\n", "\n", "\r");
    assert(res[0] == "4");
    assert(res[1] == "");
    assert(res[2] == "");
}