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// Copyright 2016 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.!
#include "builder.h"
#include "builtin_pb/sentencepiece.pb.h"
#include "builtin_pb/sentencepiece_model.pb.h"
#include "common.h"
#include "filesystem.h"
#include "init.h"
#include "normalizer.h"
#include "sentencepiece_processor.h"
#include "sentencepiece_trainer.h"
#include "third_party/absl/flags/flag.h"
ABSL_FLAG(std::string, model, "", "Model file name");
ABSL_FLAG(bool, use_internal_normalization, false,
"Use NormalizerSpec \"as-is\" to run the normalizer "
"for SentencePiece segmentation");
ABSL_FLAG(std::string, normalization_rule_name, "",
"Normalization rule name. "
"Choose from nfkc or identity");
ABSL_FLAG(std::string, normalization_rule_tsv, "",
"Normalization rule TSV file. ");
ABSL_FLAG(bool, remove_extra_whitespaces, true, "Remove extra whitespaces");
ABSL_FLAG(bool, decompile, false,
"Decompile compiled charamap and output it as TSV.");
ABSL_FLAG(std::string, input, "", "Input filename");
ABSL_FLAG(std::string, output, "", "Output filename");
using sentencepiece::ModelProto;
using sentencepiece::NormalizerSpec;
using sentencepiece::SentencePieceProcessor;
using sentencepiece::SentencePieceTrainer;
using sentencepiece::normalizer::Builder;
using sentencepiece::normalizer::Normalizer;
int main(int argc, char *argv[]) {
sentencepiece::ParseCommandLineFlags(argv[0], &argc, &argv, true);
std::vector<std::string> rest_args;
if (absl::GetFlag(FLAGS_input).empty()) {
for (int i = 1; i < argc; ++i) {
rest_args.push_back(std::string(argv[i]));
}
} else {
rest_args.push_back(absl::GetFlag(FLAGS_input));
}
NormalizerSpec spec;
if (!absl::GetFlag(FLAGS_model).empty()) {
ModelProto model_proto;
SentencePieceProcessor sp;
CHECK_OK(sp.Load(absl::GetFlag(FLAGS_model)));
spec = sp.model_proto().normalizer_spec();
} else if (!absl::GetFlag(FLAGS_normalization_rule_tsv).empty()) {
spec.set_normalization_rule_tsv(
absl::GetFlag(FLAGS_normalization_rule_tsv));
CHECK_OK(SentencePieceTrainer::PopulateNormalizerSpec(&spec));
} else if (!absl::GetFlag(FLAGS_normalization_rule_name).empty()) {
spec.set_name(absl::GetFlag(FLAGS_normalization_rule_name));
CHECK_OK(SentencePieceTrainer::PopulateNormalizerSpec(&spec));
} else {
LOG(FATAL) << "Sets --model, normalization_rule_tsv, or "
"normalization_rule_name flag.";
}
// Uses the normalizer spec encoded in the model_pb.
if (!absl::GetFlag(FLAGS_use_internal_normalization)) {
spec.set_add_dummy_prefix(false); // do not add dummy prefix.
spec.set_escape_whitespaces(false); // do not output meta symbol.
spec.set_remove_extra_whitespaces(
absl::GetFlag(FLAGS_remove_extra_whitespaces));
}
if (absl::GetFlag(FLAGS_decompile)) {
Builder::CharsMap chars_map;
CHECK_OK(
Builder::DecompileCharsMap(spec.precompiled_charsmap(), &chars_map));
CHECK_OK(Builder::SaveCharsMap(absl::GetFlag(FLAGS_output), chars_map));
} else {
const Normalizer normalizer(spec);
auto output =
sentencepiece::filesystem::NewWritableFile(absl::GetFlag(FLAGS_output));
CHECK_OK(output->status());
if (rest_args.empty()) {
rest_args.push_back(""); // empty means that read from stdin.
}
std::string line;
for (const auto &filename : rest_args) {
auto input = sentencepiece::filesystem::NewReadableFile(filename);
CHECK_OK(input->status());
while (input->ReadLine(&line)) {
output->WriteLine(normalizer.Normalize(line));
}
}
}
return 0;
}
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