80 lines
1.8 KiB
C++
80 lines
1.8 KiB
C++
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#include <iostream>
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#include <vector>
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#include "absl/flags/flag.h"
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#include "absl/flags/parse.h"
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#include "absl/hash/hash.h"
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#include "absl/strings/str_cat.h"
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#include "absl/time/clock.h"
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#include "absl/time/time.h"
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#include "absl/types/optional.h"
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#include "farmhash.h"
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ABSL_FLAG(std::vector<std::string>, words, {}, "words to use");
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struct Result {
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std::string a;
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int ec;
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absl::optional<std::string> p;
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};
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std::string which(const std::vector<std::string>& words) {
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uint64_t fp;
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std::string word;
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for (const auto& w : words) {
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auto nfp = util::Fingerprint64(w);
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if (nfp > fp) {
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fp = nfp;
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word = w;
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}
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}
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return word;
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}
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Result decide(const std::vector<std::string>& words) {
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auto input = absl::FormatTime("%Y%m%d", absl::Now(), absl::UTCTimeZone());
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for (const auto& w : words) {
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input += w;
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}
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auto base = util::Fingerprint64(input);
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Result result = { "nope" };
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if (base % 10 == 0) {
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result.a = "ca";
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} else if (base % 8 == 0) {
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result.a = "c1";
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result.p = which(words);
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} else if (base % 6 == 0) {
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result.a = "skip";
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} else if (base % 3 == 0) {
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result.a = "e1";
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result.ec = base % 10;
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result.p = which(words);
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} else if (base % 2 == 0) {
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result.a = "ea";
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result.ec = base % 10;
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}
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return result;
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}
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int main(int argc, char *argv[]) {
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absl::ParseCommandLine(argc, argv);
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auto words = absl::GetFlag(FLAGS_words);
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if (words.size() < 2) {
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std::cerr << "needs at least two!" << std::endl;
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return 1;
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}
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auto result = decide(words);
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std::cout << result.a
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<< (result.p.has_value() ? absl::StrCat(" ", "(", result.p.value(), ")")
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: "")
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<< (result.ec > 0 ? absl::StrCat(": ", result.ec) : "")
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<< std::endl;
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}
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