/*    This file is part of the 'ears' package.    Copyright (C) 1994,1995  Ralf Stephan <ralf@ark.franken.de>    This program is free software; you can redistribute it and/or modify    it under the terms of the GNU General Public License as published by    the Free Software Foundation; either version 2 of the License, or    (at your option) any later version.    This program is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the    GNU General Public License for more details.    You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/#pragma implementation #include <stdlib.h>#include <unistd.h>#include <dirent.h>#include "myrandom.h"#include "words.h"#include "exception.h"// This is the interface to the words file.  Until EARS is capable// of recognizing more than a few hundred words, they are kept in a// linked list.words* words::instance_ = 0;  // is a singleton//-------------------------------PUBLICS----------------------------------// Returns a random word out of those words that need learning.// (That is, it is recorded less than MIN_NUM_WORDS times.)string words::rnd_missing (){  if (missing_==0) return "";    RandomInteger Rnd (1, missing_);  int r = Rnd();    for (it_ = list_.begin(); it_!=list_.end(); it_++)  {    r -= (*it_)->missing;    if (r<=0)    {      --((*it_)->missing);      --missing_;      return (*it_)->label;    }  }  return "";}void words::try_to_load (const string& basename, const string& path)// if file exists, load it and set wfn_ and cfp_// if file doesn't exist, set wfn_ and load_err{  load_err_=false;  wfn_ = path + "/" + basename + ".words";  cfp_ = new cfg_file(wfn_);    if (!cfp_->exists())  {    delete cfp_; cfp_=0;    string wfn1 = string("./") + basename + ".words";    cfg_file* cfp1 = new cfg_file(wfn1);    if (!cfp1->exists())       { delete cfp1; load_err_=true; return; }    else       { wfn_=wfn1; cfp_=cfp1; }  }  string first,second;  while (cfp_->getpair(first,second))    list_.push_back(new Word (first,second,0));  delete cfp_;  cfp_=0;  if (list_.size() < 2)    throw(fatal_exception("Not enough words (min. 2)"));}static struct def_words { char *l,*a; } defaults[] ={  {"Zero","0"},{"One" ,"1"},{"Two" ,"2"},  {"Three" ,"3"},{"Four" ,"4"},{"Five" ,"5"},{"Six" ,"6"},  {"Seven" ,"7"},{"Eight" ,"8"},{"Nine" ,"9"}};void words::make_default_list(){  list_.erase (list_.begin(), list_.end());  cfp_ = new cfg_file (wfn_);  for (unsigned k=0; k<sizeof(defaults)/sizeof(def_words); k++)  {    Word* p = new Word;    p->label = defaults[k].l;    p->action = defaults[k].a;    p->missing = 0;    list_.push_back (p);    cfp_->write (p->label, p->action);  }  delete cfp_;  cfp_=0;}// Looks if all words are spoken a sufficient number of times.// If not, counts and marks all that miss, for later recording.void words::mark_missing (const string& path, int num){  DIR* dp = opendir(path.c_str());  struct dirent *p;  while ((p=readdir(dp))!=0)  {    string fn = p->d_name;    if (fn=="." || fn=="..") continue;    fn = fn.substr(0,fn.find("."));    for (it_ = list_.begin(); it_!=list_.end(); it_++)      if ((*it_)->label==fn)        ++((*it_)->missing);  }  closedir(dp);  for (it_ = list_.begin(); it_!=list_.end(); it_++)  {    if ((*it_)->missing >= num)      (*it_)->missing=0;    else    {      int t = num - (*it_)->missing;      (*it_)->missing = t;      missing_ += t;    }  }}