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/*
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 *   getlopt.h
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 *
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 *   Oliver Fromme  <oliver.fromme@heim3.tu-clausthal.de>
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 *   Tue Apr  8 07:13:39 MET DST 1997
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 */
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#include <stdlib.h>
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#include <string.h>
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extern int loptind;     /* index in argv[] */
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extern int loptchr;     /* index in argv[loptind] */
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extern char *loptarg;   /* points to argument if present, else to option */
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typedef struct {
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        char sname;     /* short option name, can be 0 */
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        char *lname;    /* long option name, can be 0 */
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        int flags;      /* see below */
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        void (*func)(char *);   /* called if != 0 (after setting of var) */
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        void *var;      /* type is *int, *char or **char, see below */
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        int value;
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} topt;
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#define GLO_ARG  1
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#define GLO_CHAR 2
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#define GLO_NUM  0
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/* flags:
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 *      bit 0 = 0 - no argument
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 *              if var != NULL
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 *                      *var := value or (char)value [see bit 1]
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 *              else
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 *                      loptarg = &option
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 *                      return ((value != 0) ? value : sname)
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 *      bit 0 = 1 - argument required
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 *              if var != NULL
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 *                      *var := atoi(arg) or strdup(arg) [see bit 1]
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 *              else
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 *                      loptarg = &arg
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 *                      return ((value != 0) ? value : sname)
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 *
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 *      bit 1 = 0 - var is a pointer to an int
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 *      bit 1 = 1 - var is a pointer to a char (or string),
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 *                      and value is interpreted as char
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 *
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 * Note: The options definition is terminated by a topt
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 *       containing only zeroes.
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 */
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#define GLO_END         0
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#define GLO_UNKNOWN     -1
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#define GLO_NOARG       -2
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#define GLO_CONTINUE    -3
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int getlopt (int argc, char *argv[], topt *opts);
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/* return values:
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 *      GLO_END         (0)     end of options
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 *      GLO_UNKNOWN     (-1)    unknown option *loptarg
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 *      GLO_NOARG       (-2)    missing argument
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 *      GLO_CONTINUE    (-3)    (reserved for internal use)
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 *      else - return value according to flags (see above)
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 */
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/* EOF */