1 // fstprint.cc
2
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 //
15 // Copyright 2005-2010 Google, Inc.
16 // Author: riley@google.com (Michael Riley)
17 // Modified: jpr@google.com (Jake Ratkiewicz) to use FstClass
18 //
19 // \file
20 // Prints out binary FSTs in simple text format used by AT&T
21 // (see http://www.research.att.com/projects/mohri/fsm/doc4/fsm.5.html).
22
23 #include <fst/script/print.h>
24
25 DEFINE_bool(acceptor, false, "Input in acceptor format");
26 DEFINE_string(isymbols, "", "Input label symbol table");
27 DEFINE_string(osymbols, "", "Output label symbol table");
28 DEFINE_string(ssymbols, "", "State label symbol table");
29 DEFINE_bool(numeric, false, "Print numeric labels");
30 DEFINE_string(save_isymbols, "", "Save input symbol table to file");
31 DEFINE_string(save_osymbols, "", "Save output symbol table to file");
32 DEFINE_bool(show_weight_one, false,
33 "Print/draw arc weights and final weights equal to Weight::One()");
34 DEFINE_bool(allow_negative_labels, false,
35 "Allow negative labels (not recommended; may cause conflicts)");
36
main(int argc,char ** argv)37 int main(int argc, char **argv) {
38 namespace s = fst::script;
39 using fst::ostream;
40 using fst::SymbolTable;
41
42 string usage = "Prints out binary FSTs in simple text format.\n\n Usage: ";
43 usage += argv[0];
44 usage += " [binary.fst [text.fst]]\n";
45
46 std::set_new_handler(FailedNewHandler);
47 SET_FLAGS(usage.c_str(), &argc, &argv, true);
48 if (argc > 3) {
49 ShowUsage();
50 return 1;
51 }
52
53 string in_name = (argc > 1 && strcmp(argv[1], "-") != 0) ? argv[1] : "";
54 string out_name = argc > 2 ? argv[2] : "";
55
56 s::FstClass *fst = s::FstClass::Read(in_name);
57 if (!fst) return 1;
58
59 ostream *ostrm = &cout;
60 string dest = "standard output";
61 if (argc == 3) {
62 dest = argv[2];
63 ostrm = new fst::ofstream(argv[2]);
64 if (!*ostrm) {
65 LOG(ERROR) << argv[0] << ": Open failed, file = " << argv[2];
66 return 1;
67 }
68 }
69 ostrm->precision(9);
70
71 const SymbolTable *isyms = 0, *osyms = 0, *ssyms = 0;
72
73 fst::SymbolTableTextOptions opts;
74 opts.allow_negative = FLAGS_allow_negative_labels;
75
76 if (!FLAGS_isymbols.empty() && !FLAGS_numeric) {
77 isyms = SymbolTable::ReadText(FLAGS_isymbols, opts);
78 if (!isyms) exit(1);
79 }
80
81 if (!FLAGS_osymbols.empty() && !FLAGS_numeric) {
82 osyms = SymbolTable::ReadText(FLAGS_osymbols, opts);
83 if (!osyms) exit(1);
84 }
85
86 if (!FLAGS_ssymbols.empty() && !FLAGS_numeric) {
87 ssyms = SymbolTable::ReadText(FLAGS_ssymbols);
88 if (!ssyms) exit(1);
89 }
90
91 if (!isyms && !FLAGS_numeric)
92 isyms = fst->InputSymbols();
93 if (!osyms && !FLAGS_numeric)
94 osyms = fst->OutputSymbols();
95
96 s::PrintFst(*fst, *ostrm, dest, isyms, osyms, ssyms,
97 FLAGS_acceptor, FLAGS_show_weight_one);
98
99 if (isyms && !FLAGS_save_isymbols.empty())
100 isyms->WriteText(FLAGS_save_isymbols);
101
102 if (osyms && !FLAGS_save_osymbols.empty())
103 osyms->WriteText(FLAGS_save_osymbols);
104
105 if (ostrm != &cout)
106 delete ostrm;
107 return 0;
108 }
109