63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
#include "lm/common/print.hh"
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#include "lm/common/ngram_stream.hh"
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#include "util/file_stream.hh"
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#include "util/file.hh"
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#include "util/mmap.hh"
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#include "util/scoped.hh"
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#include <sstream>
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#include <cstring>
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namespace lm {
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VocabReconstitute::VocabReconstitute(int fd) {
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uint64_t size = util::SizeOrThrow(fd);
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util::MapRead(util::POPULATE_OR_READ, fd, 0, size, memory_);
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const char *const start = static_cast<const char*>(memory_.get());
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const char *i;
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for (i = start; i != start + size; i += strlen(i) + 1) {
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map_.push_back(i);
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}
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// Last one for LookupPiece.
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map_.push_back(i);
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}
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namespace {
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template <class Payload> void PrintLead(const VocabReconstitute &vocab, ProxyStream<Payload> &stream, util::FileStream &out) {
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out << stream->Value().prob << '\t' << vocab.Lookup(*stream->begin());
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for (const WordIndex *i = stream->begin() + 1; i != stream->end(); ++i) {
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out << ' ' << vocab.Lookup(*i);
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}
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}
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} // namespace
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void PrintARPA::Run(const util::stream::ChainPositions &positions) {
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VocabReconstitute vocab(vocab_fd_);
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util::FileStream out(out_fd_);
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out << "\\data\\\n";
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for (size_t i = 0; i < positions.size(); ++i) {
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out << "ngram " << (i+1) << '=' << counts_[i] << '\n';
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}
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out << '\n';
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for (unsigned order = 1; order < positions.size(); ++order) {
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out << "\\" << order << "-grams:" << '\n';
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for (ProxyStream<NGram<ProbBackoff> > stream(positions[order - 1], NGram<ProbBackoff>(NULL, order)); stream; ++stream) {
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PrintLead(vocab, stream, out);
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out << '\t' << stream->Value().backoff << '\n';
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}
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out << '\n';
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}
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out << "\\" << positions.size() << "-grams:" << '\n';
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for (ProxyStream<NGram<Prob> > stream(positions.back(), NGram<Prob>(NULL, positions.size())); stream; ++stream) {
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PrintLead(vocab, stream, out);
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out << '\n';
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}
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out << '\n';
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out << "\\end\\\n";
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}
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} // namespace lm
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