// See www.openfst.org for extensive documentation on this weighted
|
// finite-state transducer library.
|
|
#include <cmath>
|
#include <string>
|
|
#include <fst/flags.h>
|
#include <fst/extensions/far/compile-strings.h>
|
#include <fstream>
|
|
DEFINE_string(far_field_separator, "\t",
|
"Set of characters used as a separator between printed fields");
|
|
namespace fst {
|
|
// Computes the minimal length required to encode each line number as a decimal
|
// number.
|
int KeySize(const char *filename) {
|
std::ifstream istrm(filename);
|
istrm.seekg(0);
|
string s;
|
int nline = 0;
|
while (getline(istrm, s)) ++nline;
|
istrm.seekg(0);
|
return nline ? ceil(log10(nline + 1)) : 1;
|
}
|
|
} // namespace fst
|
