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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | pj | 1 | /* |
| 2 | * getlopt.h |
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| 3 | * |
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| 4 | * Oliver Fromme <oliver.fromme@heim3.tu-clausthal.de> |
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| 5 | * Tue Apr 8 07:13:39 MET DST 1997 |
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| 6 | */ |
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| 7 | |||
| 8 | #include <stdlib.h> |
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| 9 | #include <string.h> |
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| 10 | |||
| 11 | extern int loptind; /* index in argv[] */ |
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| 12 | extern int loptchr; /* index in argv[loptind] */ |
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| 13 | extern char *loptarg; /* points to argument if present, else to option */ |
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| 14 | |||
| 15 | typedef struct { |
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| 16 | char sname; /* short option name, can be 0 */ |
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| 17 | char *lname; /* long option name, can be 0 */ |
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| 18 | int flags; /* see below */ |
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| 19 | void (*func)(char *); /* called if != 0 (after setting of var) */ |
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| 20 | void *var; /* type is *int, *char or **char, see below */ |
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| 21 | int value; |
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| 22 | } topt; |
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| 23 | |||
| 24 | #define GLO_ARG 1 |
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| 25 | #define GLO_CHAR 2 |
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| 26 | #define GLO_NUM 0 |
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| 27 | |||
| 28 | /* flags: |
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| 29 | * bit 0 = 0 - no argument |
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| 30 | * if var != NULL |
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| 31 | * *var := value or (char)value [see bit 1] |
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| 32 | * else |
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| 33 | * loptarg = &option |
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| 34 | * return ((value != 0) ? value : sname) |
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| 35 | * bit 0 = 1 - argument required |
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| 36 | * if var != NULL |
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| 37 | * *var := atoi(arg) or strdup(arg) [see bit 1] |
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| 38 | * else |
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| 39 | * loptarg = &arg |
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| 40 | * return ((value != 0) ? value : sname) |
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| 41 | * |
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| 42 | * bit 1 = 0 - var is a pointer to an int |
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| 43 | * bit 1 = 1 - var is a pointer to a char (or string), |
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| 44 | * and value is interpreted as char |
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| 45 | * |
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| 46 | * Note: The options definition is terminated by a topt |
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| 47 | * containing only zeroes. |
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| 48 | */ |
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| 49 | |||
| 50 | #define GLO_END 0 |
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| 51 | #define GLO_UNKNOWN -1 |
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| 52 | #define GLO_NOARG -2 |
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| 53 | #define GLO_CONTINUE -3 |
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| 54 | |||
| 55 | int getlopt (int argc, char *argv[], topt *opts); |
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| 56 | |||
| 57 | /* return values: |
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| 58 | * GLO_END (0) end of options |
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| 59 | * GLO_UNKNOWN (-1) unknown option *loptarg |
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| 60 | * GLO_NOARG (-2) missing argument |
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| 61 | * GLO_CONTINUE (-3) (reserved for internal use) |
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| 62 | * else - return value according to flags (see above) |
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| 63 | */ |
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| 64 | |||
| 65 | /* EOF */ |