} // namespace
-std::unique_ptr<Codec> getCodec(CodecType type, int level) {
- typedef std::unique_ptr<Codec> (*CodecFactory)(int, CodecType);
-
- static CodecFactory codecFactories[
- static_cast<size_t>(CodecType::NUM_CODEC_TYPES)] = {
- nullptr, // USER_DEFINED
- NoCompressionCodec::create,
+typedef std::unique_ptr<Codec> (*CodecFactory)(int, CodecType);
+static CodecFactory
+ codecFactories[static_cast<size_t>(CodecType::NUM_CODEC_TYPES)] = {
+ nullptr, // USER_DEFINED
+ NoCompressionCodec::create,
#if FOLLY_HAVE_LIBLZ4
- LZ4Codec::create,
+ LZ4Codec::create,
#else
- nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBSNAPPY
- SnappyCodec::create,
+ SnappyCodec::create,
#else
- nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBZ
- ZlibCodec::create,
+ ZlibCodec::create,
#else
- nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBLZ4
- LZ4Codec::create,
+ LZ4Codec::create,
#else
- nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBLZMA
- LZMA2Codec::create,
- LZMA2Codec::create,
+ LZMA2Codec::create,
+ LZMA2Codec::create,
#else
- nullptr,
- nullptr,
+ nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBZSTD
- ZSTDCodec::create,
+ ZSTDCodec::create,
#else
- nullptr,
+ nullptr,
#endif
#if FOLLY_HAVE_LIBZ
- ZlibCodec::create,
+ ZlibCodec::create,
#else
- nullptr,
+ nullptr,
#endif
- };
+};
+bool hasCodec(CodecType type) {
size_t idx = static_cast<size_t>(type);
if (idx >= static_cast<size_t>(CodecType::NUM_CODEC_TYPES)) {
- throw std::invalid_argument(to<std::string>(
- "Compression type ", idx, " not supported"));
+ throw std::invalid_argument(
+ to<std::string>("Compression type ", idx, " invalid"));
+ }
+ return codecFactories[idx] != nullptr;
+}
+
+std::unique_ptr<Codec> getCodec(CodecType type, int level) {
+ size_t idx = static_cast<size_t>(type);
+ if (idx >= static_cast<size_t>(CodecType::NUM_CODEC_TYPES)) {
+ throw std::invalid_argument(
+ to<std::string>("Compression type ", idx, " invalid"));
}
auto factory = codecFactories[idx];
if (!factory) {