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# GetLongOpt.h

    00001 /* $Id: GetLongOpt.h,v 2.2 2003/02/06 01:02:13 cljanss Exp $ */
    00002 /* S Manoharan. Advanced Computer Research Institute. Lyon. France */
    00003
    00004 #ifdef __GNUC__
    00005 #pragma interface
    00006 #endif
    00007
    00008 #ifndef _GetLongOpt_h_
    00009 #define _GetLongOpt_h_
    00010
    00011 #include <iostream>
    00012 #include <string.h>
    00013
    00014 namespace sc {
    00015
    00016 class GetLongOpt {
    00017 public:
    00018    enum OptType {
    00019       NoValue, OptionalValue, MandatoryValue
    00020    };
    00021 private:
    00022    struct Cell {
    00023       const char *option;       // option name
    00024       OptType type;             // option type
    00025       const char *description;  // a description of option
    00026       const char *value;        // value of option (string)
    00027       Cell *next;               // pointer to the next cell
    00028
    00029       Cell() { option = description = value = 0; next = 0; }
    00030    };
    00031 private:
    00032   Cell *table;                          // option table
    00033   const char *ustring;                  // usage message
    00034   char *pname;                          // program basename
    00035   char optmarker;                       // option marker
    00036
    00037   int enroll_done;                      // finished enrolling
    00038   Cell *last;                           // last entry in option table
    00039
    00040 private:
    00041   char *basename(char * const p) const;
    00042   int setcell(Cell *c, const char *valtoken, const char *nexttoken, const char *p);
    00043 public:
    00044    GetLongOpt(const char optmark = '-');
    00045    ~GetLongOpt();
    00046
    00047    int parse(int argc, char * const *argv);
    00048    int parse(char * const str, char * const p);
    00049
    00050    int enroll(const char * const opt, const OptType t,
    00051       const char * const desc, const char * const val);
    00052    const char *retrieve(const char * const opt) const;
    00053
    00054    void usage(std::ostream &outfile = std::cout) const;
    00055    void usage(const char *str)          { ustring = str; }
    00056 };
    00057
    00058 }
    00059
    00060 #endif /* _GetLongOpt_h_ */