1 2 // Licensed under the Apache License, Version 2.0 (the "License"); 3 // you may not use this file except in compliance with the License. 4 // You may obtain a copy of the License at 5 // 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 // 14 // Copyright 2005-2010 Google, Inc. 15 // Author: jpr (at) google.com (Jake Ratkiewicz) 16 17 #include <fst/extensions/far/compile-strings.h> 18 #include <iostream> 19 #include <fstream> 20 #include <sstream> 21 22 DEFINE_string(far_field_separator, "\t", 23 "Set of characters used as a separator between printed fields"); 24 25 namespace fst { 26 27 // Compute the minimal length required to 28 // encode each line number as a decimal number 29 int KeySize(const char *filename) { 30 ifstream istrm(filename); 31 istrm.seekg(0); 32 string s; 33 int nline = 0; 34 while (getline(istrm, s)) 35 ++nline; 36 istrm.seekg(0); 37 return nline ? ceil(log10(nline + 1)) : 1; 38 } 39 40 } // namespace fst 41
