Revision 8180,
1.9 KB
checked in by epeisach, 29 years ago
(diff) |
Include sys/types.h before sys/stat.h
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[7779] | 1 | /* |
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| 2 | file: lertstop.c |
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| 3 | basic use: lertstop type |
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| 4 | remove a single letter category from db |
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| 5 | |
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| 6 | ndbm apparently fails in traversing the data if you delete or |
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| 7 | change keys while traversing. |
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| 8 | options--restart traversing or build a linked list of changes... |
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| 9 | |
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| 10 | q&d program...restart traverse! |
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| 11 | |
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| 12 | */ |
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| 13 | |
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| 14 | #include <stdio.h> |
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[8180] | 15 | #include <sys/types.h> |
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[7779] | 16 | #include <sys/stat.h> |
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| 17 | #include <fcntl.h> |
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| 18 | #include <ndbm.h> |
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| 19 | #include <sys/file.h> |
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| 20 | |
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| 21 | #include "lert.h" |
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| 22 | |
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| 23 | main(argc, argv) |
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| 24 | int argc; |
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| 25 | char ** argv; |
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| 26 | { |
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| 27 | char buffer[512]; |
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| 28 | DBM *db; |
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| 29 | datum key; |
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| 30 | datum new; |
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| 31 | datum data; |
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| 32 | register char *cp; |
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| 33 | register char *nd_p; |
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| 34 | int nd_c; |
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| 35 | int count = 0; |
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| 36 | int changed; |
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| 37 | int new_char; |
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| 38 | char * name_p; |
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| 39 | int name_c; |
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| 40 | char categ[128]; |
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| 41 | |
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| 42 | if (argc != 2) { |
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| 43 | fprintf(stderr, "usage: %s type\n", argv[0]); |
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| 44 | fprintf(stderr, " type is a single character category\n"); |
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| 45 | fprintf(stderr, " to be removed from the lertdata file\n"); |
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| 46 | exit(1); |
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| 47 | } |
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| 48 | |
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| 49 | db = dbm_open(LERTS_DATA, O_RDWR, 0600); |
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| 50 | if (db == NULL) { |
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| 51 | fprintf(stderr, "Unable to open database file %s.\n", LERTS_DATA); |
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| 52 | exit (1); |
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| 53 | } |
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| 54 | key = dbm_firstkey(db); |
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| 55 | while (key.dptr != NULL) { |
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| 56 | data = dbm_fetch(db, key); |
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| 57 | if (!dbm_error(db)) { |
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| 58 | cp = categ; |
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| 59 | changed = FALSE; |
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| 60 | for(name_c = data.dsize, name_p = data.dptr; name_c > 0; name_c--) { |
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| 61 | if (*name_p != argv[1][0]) { |
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| 62 | *cp = *name_p; |
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| 63 | cp++; |
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| 64 | } else { |
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| 65 | changed = TRUE; |
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| 66 | } |
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| 67 | name_p++; |
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| 68 | } |
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| 69 | |
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| 70 | if (changed) { |
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| 71 | if (data.dsize == 1) { |
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| 72 | if (dbm_delete(db, key) < 0) { |
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| 73 | fprintf(stderr, "dbm_delete() failed\n"); |
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| 74 | (void) dbm_clearerr(db); |
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| 75 | } |
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| 76 | } else { |
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| 77 | new.dsize = data.dsize - 1; |
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| 78 | new.dptr = categ; |
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| 79 | if (dbm_store(db, key, new, DBM_REPLACE) < 0) { |
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| 80 | fprintf(stderr, "dbm_store() failed\n"); |
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| 81 | (void) dbm_clearerr(db); |
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| 82 | } |
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| 83 | } |
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| 84 | key = dbm_firstkey(db); |
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| 85 | } else { |
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| 86 | key = dbm_nextkey(db); |
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| 87 | } |
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| 88 | } |
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| 89 | } |
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| 90 | return (0); |
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| 91 | } |
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