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src/bin/draw-tree.cc
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// bin/draw-tree.cc
// Copyright 2012 Vassil Panayotov
// See ../../COPYING for clarification regarding multiple authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
// MERCHANTABLITY OR NON-INFRINGEMENT.
// See the Apache 2 License for the specific language governing permissions and
// limitations under the License.
#include "tree/tree-renderer.h"
#include "tree/context-dep.h"
void MakeEvent(std::string &qry, fst::SymbolTable *phone_syms,
kaldi::EventType **query)
{
using namespace kaldi;
EventType *query_event = new EventType();
size_t found, old_found = 0;
EventKeyType key = kPdfClass; // this code in fact relies on kPdfClass = -1
while ((found = qry.find('/', old_found)) != std::string::npos) {
std::string valstr = qry.substr(old_found, found - old_found);
EventValueType value;
if (key == kPdfClass) {
value = static_cast<EventValueType>(atoi(valstr.c_str()));
if (value < 0) { // not valid pdf-class
KALDI_ERR << "Bad query: invalid pdf-class (" << valstr << ')';
}
}
else {
value = static_cast<EventValueType>(phone_syms->Find(valstr.c_str()));
if (value == -1) { // fst::kNoSymbol
KALDI_ERR << "Bad query: invalid symbol (" << valstr << ')';
}
}
query_event->push_back(std::make_pair(key++, value));
old_found = found + 1;
}
std::string valstr = qry.substr(old_found);
EventValueType value =
static_cast<EventValueType>(phone_syms->Find(valstr.c_str()));
if (value == -1) { // fst::kNoSymbol
KALDI_ERR << "Bad query: invalid symbol (" << valstr << ')';
}
query_event->push_back(std::make_pair(key, value));
*query = query_event;
}
int main(int argc, char **argv) {
using namespace kaldi;
try {
std::string qry;
bool use_tooltips = false;
bool gen_html = false;
const char *usage =
"Outputs a decision tree description in GraphViz format
"
"Usage: draw-tree [options] <phone-symbols> <tree>
"
"e.g.: draw-tree phones.txt tree | dot -Gsize=8,10.5 -Tps | ps2pdf - tree.pdf
";
ParseOptions po(usage);
po.Register("query", &qry,
"a query to trace through the tree"
"(format: pdf-class/ctx-phone1/.../ctx-phoneN)");
po.Register("use-tooltips", &use_tooltips, "use tooltips instead of labels");
po.Register("gen-html", &gen_html, "generates HTML boilerplate(useful with SVG)");
po.Read(argc, argv);
if (gen_html) {
std::cout << "<html>
<head><title>Decision Tree</tree></head>
"
<< "<body><object data=\"tree.svg\" type=\"image/svg+xml\"/>"
<< "</body>
</html>
";
return 0;
}
if (po.NumArgs() != 2) {
po.PrintUsage();
return -1;
}
std::string phnfile = po.GetArg(1);
std::string treefile = po.GetArg(2);
fst::SymbolTable *phones_symtab = NULL;
{
std::ifstream is(phnfile.c_str());
phones_symtab = ::fst::SymbolTable::ReadText(is, phnfile);
if (!phones_symtab)
KALDI_ERR << "Could not read phones symbol table file "<< phnfile;
}
EventType *query = NULL;
if (!qry.empty())
MakeEvent(qry, phones_symtab, &query);
TreeRenderer *renderer = NULL;
{
bool binary;
Input ki(treefile, &binary);
renderer = new TreeRenderer(ki.Stream(), binary, std::cout,
*phones_symtab, use_tooltips);
renderer->Render(query);
}
delete renderer;
delete query;
} catch (const std::exception &e) {
std::cerr << e.what();
return -1;
}
}
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