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Last change
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2,
checked in by oldcode, 24 years ago
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Initial revision
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Property svn:eol-style set to
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Author Date Id Revision
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File size:
1.3 KB
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| 1 | /* |
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| 2 | * mygetopt.c Adachi, J. 1994.06.30 |
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| 3 | * Copyright (C) 1992, 1993 J. Adachi & M. Hasegawa, All rights reserved. |
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| 4 | */ |
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| 5 | |
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| 6 | /* #include <stdio.h> */ |
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| 7 | /* #include <string.h> */ |
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| 8 | #include "molphy.h" |
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| 9 | |
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| 10 | /* #define SW_CHAR '-' switch character, '-'(UNIX) or '/'(DOS) */ |
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| 11 | int Optindex = 1; /* index of next argument */ |
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| 12 | int Opterror = 1; /* error message level */ |
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| 13 | char *Optargp; /* pointer to argument of current option */ |
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| 14 | static char *Optlocp = NULL; /* next option char's location */ |
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| 15 | |
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| 16 | int mygetopt(argc, argv, optstring) |
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| 17 | int argc; |
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| 18 | char **argv; |
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| 19 | char *optstring; |
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| 20 | { |
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| 21 | unsigned char ch; |
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| 22 | char *optp; |
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| 23 | |
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| 24 | if (argc > Optindex) { |
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| 25 | if (Optlocp == NULL) { |
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| 26 | if ((Optlocp = argv[Optindex]) == NULL || *(Optlocp++) != SW_CHAR) |
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| 27 | goto lgetopteof; |
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| 28 | if (*Optlocp == SW_CHAR) { |
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| 29 | Optindex++; |
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| 30 | goto lgetopteof; |
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| 31 | } |
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| 32 | } |
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| 33 | if ((ch = *(Optlocp++)) == 0) { |
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| 34 | Optindex++; |
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| 35 | goto lgetopteof; |
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| 36 | } |
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| 37 | if (ch == ':' || (optp = strchr(optstring, ch)) == NULL) |
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| 38 | goto lgetopterr; |
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| 39 | if (':' == *(++optp)) { |
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| 40 | Optindex++; |
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| 41 | if (0 == *Optlocp) { |
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| 42 | if (argc <= Optindex) |
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| 43 | goto lgetopterr; |
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| 44 | Optlocp = argv[Optindex++]; |
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| 45 | } |
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| 46 | Optargp = Optlocp; |
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| 47 | Optlocp = NULL; |
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| 48 | } else { |
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| 49 | if (0 == *Optlocp) { |
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| 50 | Optindex++; |
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| 51 | Optlocp = NULL; |
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| 52 | } |
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| 53 | Optargp = NULL; |
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| 54 | } |
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| 55 | return ch; |
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| 56 | } |
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| 57 | |
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| 58 | lgetopteof: |
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| 59 | Optargp = Optlocp = NULL; |
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| 60 | return EOF; |
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| 61 | |
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| 62 | lgetopterr: |
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| 63 | Optargp = NULL; |
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| 64 | return ('?'); |
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| 65 | } |
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