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#include "arpa_io.hh"
#include "../../util/file_piece.hh"
#include "../../util/string_stream.hh"
#include <iostream>
#include <ostream>
#include <string>
#include <vector>
#include <cctype>
#include <cerrno>
#include <cstring>
namespace lm {
ARPAInputException::ARPAInputException(const StringPiece &message) throw() {
*this << message;
}
ARPAInputException::ARPAInputException(const StringPiece &message, const StringPiece &line) throw() {
*this << message << " in line " << line;
}
ARPAInputException::~ARPAInputException() throw() {}
// Seeking is the responsibility of the caller.
template <class Stream> void WriteCounts(Stream &out, const std::vector<uint64_t> &number) {
out << "\n\\data\\\n";
for (unsigned int i = 0; i < number.size(); ++i) {
out << "ngram " << i+1 << "=" << number[i] << '\n';
}
out << '\n';
}
size_t SizeNeededForCounts(const std::vector<uint64_t> &number) {
util::StringStream stream;
WriteCounts(stream, number);
return stream.str().size();
}
bool IsEntirelyWhiteSpace(const StringPiece &line) {
for (size_t i = 0; i < static_cast<size_t>(line.size()); ++i) {
if (!isspace(line.data()[i])) return false;
}
return true;
}
ARPAOutput::ARPAOutput(const char *name, size_t buffer_size)
: file_backing_(util::CreateOrThrow(name)), file_(file_backing_.get(), buffer_size) {}
void ARPAOutput::ReserveForCounts(std::streampos reserve) {
for (std::streampos i = 0; i < reserve; i += std::streampos(1)) {
file_ << '\n';
}
}
void ARPAOutput::BeginLength(unsigned int length) {
file_ << '\\' << length << "-grams:" << '\n';
fast_counter_ = 0;
}
void ARPAOutput::EndLength(unsigned int length) {
file_ << '\n';
if (length > counts_.size()) {
counts_.resize(length);
}
counts_[length - 1] = fast_counter_;
}
void ARPAOutput::Finish() {
file_ << "\\end\\\n";
file_.seekp(0);
WriteCounts(file_, counts_);
file_.flush();
}
} // namespace lm
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