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: allauzen@google.com (Cyril Allauzen) 16 17#ifndef FST_EXTENSIONS_FAR_EQUAL_H_ 18#define FST_EXTENSIONS_FAR_EQUAL_H_ 19 20#include <string> 21 22#include <fst/extensions/far/far.h> 23#include <fst/equal.h> 24 25namespace fst { 26 27template <class Arc> 28bool FarEqual(const string &filename1, 29 const string &filename2, 30 float delta = kDelta, 31 const string &begin_key = string(), 32 const string &end_key = string()) { 33 34 FarReader<Arc> *reader1 = FarReader<Arc>::Open(filename1); 35 FarReader<Arc> *reader2 = FarReader<Arc>::Open(filename2); 36 if (!reader1 || !reader2) { 37 delete reader1; 38 delete reader2; 39 VLOG(1) << "FarEqual: cannot open input Far file(s)"; 40 return false; 41 } 42 43 if (!begin_key.empty()) { 44 bool find_begin1 = reader1->Find(begin_key); 45 bool find_begin2 = reader2->Find(begin_key); 46 if (!find_begin1 || !find_begin2) { 47 bool ret = !find_begin1 && !find_begin2; 48 if (!ret) { 49 VLOG(1) << "FarEqual: key \"" << begin_key << "\" missing from " 50 << (find_begin1 ? "second" : "first") << " archive."; 51 } 52 delete reader1; 53 delete reader2; 54 return ret; 55 } 56 } 57 58 for(; !reader1->Done() && !reader2->Done(); 59 reader1->Next(), reader2->Next()) { 60 const string key1 = reader1->GetKey(); 61 const string key2 = reader2->GetKey(); 62 if (!end_key.empty() && end_key < key1 && end_key < key2) { 63 delete reader1; 64 delete reader2; 65 return true; 66 } 67 if (key1 != key2) { 68 VLOG(1) << "FarEqual: mismatched keys \"" 69 << key1 << "\" <> \"" << key2 << "\"."; 70 delete reader1; 71 delete reader2; 72 return false; 73 } 74 if (!Equal(reader1->GetFst(), reader2->GetFst(), delta)) { 75 VLOG(1) << "FarEqual: Fsts for key \"" << key1 << "\" are not equal."; 76 delete reader1; 77 delete reader2; 78 return false; 79 } 80 } 81 82 if (!reader1->Done() || !reader2->Done()) { 83 VLOG(1) << "FarEqual: key \"" 84 << (reader1->Done() ? reader2->GetKey() : reader1->GetKey()) 85 << "\" missing form " << (reader2->Done() ? "first" : "second") 86 << " archive."; 87 delete reader1; 88 delete reader2; 89 return false; 90 } 91 92 delete reader1; 93 delete reader2; 94 return true; 95} 96 97} // namespace fst 98 99#endif // FST_EXTENSIONS_FAR_EQUAL_H_ 100