/*

EGYPT Toolkit for Statistical Machine Translation
Written by Yaser Al-Onaizan, Jan Curin, Michael Jahr, Kevin Knight, John Lafferty, Dan Melamed, David Purdy, Franz Och, Noah Smith, and David Yarowsky.

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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.

*/

/* FJO 01/2001: completely reorganized parameter processing */

#include <strstream>
#include <string>
#include <fstream>
#include "defs.h"
#include "utility.h"
#include "Globals.h"
#include "D4Tables.h"
#include "D5Tables.h"
#include "ATables.h"
#include "Parameter.h"

extern bool ONLYALDUMPS;

void parseConfigFile (char * fname )
// This functions reads in the configuration file to set up some run-time
// parameters. The parameters are global variables that are defined in
// main.cc and used all over the place in the program
// The format of the configuration file can be explained in the following way
// FORMAT:
// the character '\n' separates lines ..
// lines that start with "//" (skipping over white spaces are considered
// as comments and will be ignored.
// Any other line is considered as an attribute setting instruction and it
// is divided into haves (separated by a colon ":"). The first half is the
// attribute value which consists of the concatenation of all non-white space
// tokens before the colon. These tokens will have spaces eseparating them.
// The attribute vlue is the first token after the colon (any thing after
// it will be ignored ;
// For example :
// if the configuration file has the following entry:
//
// NO.   ITERATIONS   MODEL 2 :	10
//
// then the attribute is "NO. ITERATIONS MODEL 2" , and the attribute value
// is "10"  (these do not include the quotation marks).

{

  string line, word, attrib, attribval ;
  ifstream Config_File(fname);
  if(!Config_File) {
    cerr << "ERROR:  Cannot open configuration file " << fname << "!\n" ;
    exit(1);
  }

  cout << "The following options are from the config file and will be overwritten by any command line options.\n";

  while(getline(Config_File, line)) {

    istrstream buffer(line.c_str());
    word = attrib = attribval = "" ;
    buffer >> word  ;
    if (word != "//") { // if line does not start with "//" (i.e. not a comment)
      attrib = word ;
      while((buffer >> word) && (word != ":")) {
        attrib += " " + word ;
      }
      if(!(buffer >> attribval)) {
        istrstream buffer2(line.c_str());
        buffer2>>attrib;
        buffer2>>attribval;
      }

      // This# is where (1) the configuration file is defined and
      //               (2) parsing of its attributes occurs.

      if(attrib == "t FILE") {
        t_Filename = attribval;
        cout << "\tt file:  " << t_Filename << '\n';
      } else if(attrib ==  "a FILE") {
        a_Filename = attribval;
        cout << "\ta file:  " << a_Filename << '\n';
      } else if(attrib == "d FILE") {
        d_Filename = attribval;
        cout << "\td file:  " << d_Filename << '\n';
      } else if(attrib == "n FILE") {
        n_Filename = attribval;
        cout << "\tn file:  " << n_Filename << '\n';
      } else if(attrib == "p0 FILE") {
        p0_Filename = attribval;
        cout << "\tp0 file:  " << p0_Filename << '\n';
      } else if ( line == "") {}
      else if(  !makeSetCommand(attrib,attribval,getGlobalParSet(),2) )
        cerr << "ERROR: Unrecognized attribute :" << attrib << '\n';
    }
  }
}


void parseArguments(int argc, char *argv[])
{
  int arg = 1;

  if(!strcmp(argv[1], "--h") || !strcmp(argv[1], "--help")) {
    printHelp();
    exit(0);
  }
  if( argv[1][0]=='-' )
    arg=0;
  else
    parseConfigFile(argv[1]);
  while(++arg<argc) {
    if( strlen(argv[arg])>2 && argv[arg][0]=='-' && argv[arg][1]=='-' ) {
      if( !makeSetCommand(argv[arg]+1,"1",getGlobalParSet(),2))
        cerr << "WARNING: ignoring unrecognized option:  "<< argv[arg] << '\n' ;
    } else if( arg+1<argc && !makeSetCommand(argv[arg],argv[arg+1],getGlobalParSet(),2))
      cerr << "WARNING: ignoring unrecognized option:  "<< argv[arg] << '\n' ;
    else {
      arg++;
    }
  }
  if( OPath.length() )
    OPath+="/";
  Prefix = (OPath + Prefix);
  LogFilename = (OPath + LogFilename);
  printGIZAPars(cout);
}