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      1 // fstinfo.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 (at) google.com (Michael Riley)
     17 // Modified: jpr (at) google.com (Jake Ratkiewicz) to use FstClass
     18 //
     19 // \file
     20 // Prints out various information about an FST such as number of states
     21 // and arcs and property values (see properties.h).
     22 //
     23 
     24 #include <fst/script/info.h>
     25 
     26 DEFINE_string(arc_filter, "any", "Arc filter: one of :"
     27               " \"any\", \"epsilon\", \"iepsilon\", \"oepsilon\"");
     28 DEFINE_string(info_type, "auto",
     29               "Info format: one of: \"auto\", \"long\", \"short\"");
     30 DEFINE_bool(pipe, false, "Send info to stderr, input to stdout");
     31 DEFINE_bool(test_properties, true,
     32             "Compute property values (if unknown to FST)");
     33 DEFINE_bool(fst_verify, true, "Verify FST sanity");
     34 
     35 int main(int argc, char **argv) {
     36   namespace s = fst::script;
     37   using fst::script::FstClass;
     38 
     39   string usage = "Prints out information about an FST.\n\n  Usage: ";
     40   usage += argv[0];
     41   usage += " [in.fst]\n";
     42 
     43   std::set_new_handler(FailedNewHandler);
     44   SET_FLAGS(usage.c_str(), &argc, &argv, true);
     45   if (argc > 2) {
     46     ShowUsage();
     47     return 1;
     48   }
     49 
     50   string in_name = (argc > 1 && (strcmp(argv[1], "-") != 0)) ? argv[1] : "";
     51 
     52   FstClass *ifst = FstClass::Read(in_name);
     53   if (!ifst) return 1;
     54 
     55   s::PrintFstInfo(*ifst, FLAGS_test_properties, FLAGS_arc_filter,
     56                   FLAGS_info_type, FLAGS_fst_verify, FLAGS_pipe);
     57 
     58   return 0;
     59 }
     60