// parse.h
// Class for parsing of c++ programms with $command line$ part.

#ifndef __parse_h
#define __parse_h


extern "C" {
#include <stdio.h>
#include <sys/types.h>
#include <string.h>
#include <stdlib.h>
void exit(int);
}

#ifndef SEEK_SET
#define SEEK_SET 0
#endif

// Parses the command line and defines the variables which are known
// from the command line part.
int ParseCommandLine(int, char**);


class Parse {
 private:
  unsigned long StartPos;   // where does it start
  unsigned long EndPos;     // where does it end
  char *FileName;           // of the file to insert the parser
  FILE *FD;                 // File Descriptor
  FILE *CL;                 // " " for writing the include file
  int Valid;                // is the parser or file valid? 0 yes -1 no
  int NumOfVar;             // number of variables
  int NumOfLines;           // how many lines to parse in the source
  char *Line;               // for reading a complete line
  unsigned long PosInLine;  // where are we in the line

  char **VarArg;            // variable name in command line
  char **VarNam;            // variable name in program
  char **VarType;           // variable type
  char **Default;           // default of the variable
  char **Description;       // description which appears in the usage message

  char *Author;             // author of the file
  char *Usage;              // a usage text
  char *Version;            // of the program

  int Compare(char*);     // compares the string with the following input data
  int BuiltInclude(char *name="commandline"); // the intro of the include
  int BuiltH(char*, char*);         // the .h file
  int BuiltCC(char*, char*); // the .cc file
  int BuiltUsageCode(void);  // for a variable
  int BuiltParserCode(void); // for scanning the command line
  int BuiltEventParser(void);// for scanning the event part of the command line
  int ReadString(char*&);    // within " "
  int WriteCodeArg(int);     // write parsing code for argument y

 public:
  Parse(char*);
  ~Parse(void);

  char GetC(void);
  int ReadText(void);
  int ReadWhiteSpace(void);   // 0 means ok, otherwise -1
  int ReadToEndOfLine(void);
  int FindBeginEnd(void);
  int Status(void);
  int ScanArguments(void);
  int ReadVarArg(int);
  int ReadVarNam(int);
  int ReadVarType(int);
  int ReadDefault(int);
  int ReadDescription(int);
  int ReadDefDesString(int);
  int DetNumOfArg(int);     // determines the number of arguments of a type
  int ReadLine(void);
  int Info(void);
};

#endif