| Commit | Line | Data |
|---|
| 463ee0b2 |
1 | /* |
| 2 | * dbd - dump a dbm data file |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <sys/file.h> |
| 7 | #include "sdbm.h" |
| 8 | |
| 9 | char *progname; |
| 10 | extern void oops(); |
| 11 | |
| 12 | |
| 13 | #define empty(page) (((short *) page)[0] == 0) |
| 14 | |
| 15 | int |
| 16 | main(argc, argv) |
| 17 | char **argv; |
| 18 | { |
| 19 | int n; |
| 20 | char *p; |
| 21 | char *name; |
| 22 | int pagf; |
| 23 | |
| 24 | progname = argv[0]; |
| 25 | |
| 26 | if (p = argv[1]) { |
| 27 | name = (char *) malloc((n = strlen(p)) + 5); |
| 28 | strcpy(name, p); |
| 29 | strcpy(name + n, ".pag"); |
| 30 | |
| 31 | if ((pagf = open(name, O_RDONLY)) < 0) |
| 32 | oops("cannot open %s.", name); |
| 33 | |
| 34 | sdump(pagf); |
| 35 | } |
| 36 | else |
| 37 | oops("usage: %s dbname", progname); |
| 38 | return 0; |
| 39 | } |
| 40 | |
| 41 | sdump(pagf) |
| 42 | int pagf; |
| 43 | { |
| 44 | register r; |
| 45 | register n = 0; |
| 46 | register o = 0; |
| 47 | char pag[PBLKSIZ]; |
| 48 | |
| 49 | while ((r = read(pagf, pag, PBLKSIZ)) > 0) { |
| 50 | if (!okpage(pag)) |
| 51 | fprintf(stderr, "%d: bad page.\n", n); |
| 52 | else if (empty(pag)) |
| 53 | o++; |
| 54 | else |
| 55 | dispage(pag); |
| 56 | n++; |
| 57 | } |
| 58 | |
| 59 | if (r == 0) |
| 60 | fprintf(stderr, "%d pages (%d holes).\n", n, o); |
| 61 | else |
| 62 | oops("read failed: block %d", n); |
| 63 | } |
| 64 | |
| 65 | |
| 66 | #ifdef OLD |
| 67 | dispage(pag) |
| 68 | char *pag; |
| 69 | { |
| 70 | register i, n; |
| 71 | register off; |
| 72 | register short *ino = (short *) pag; |
| 73 | |
| 74 | off = PBLKSIZ; |
| 75 | for (i = 1; i < ino[0]; i += 2) { |
| 76 | printf("\t[%d]: ", ino[i]); |
| 77 | for (n = ino[i]; n < off; n++) |
| 78 | putchar(pag[n]); |
| 79 | putchar(' '); |
| 80 | off = ino[i]; |
| 81 | printf("[%d]: ", ino[i + 1]); |
| 82 | for (n = ino[i + 1]; n < off; n++) |
| 83 | putchar(pag[n]); |
| 84 | off = ino[i + 1]; |
| 85 | putchar('\n'); |
| 86 | } |
| 87 | } |
| 88 | #else |
| 89 | dispage(pag) |
| 90 | char *pag; |
| 91 | { |
| 92 | register i, n; |
| 93 | register off; |
| 94 | register short *ino = (short *) pag; |
| 95 | |
| 96 | off = PBLKSIZ; |
| 97 | for (i = 1; i < ino[0]; i += 2) { |
| 98 | for (n = ino[i]; n < off; n++) |
| 99 | if (pag[n] != 0) |
| 100 | putchar(pag[n]); |
| 101 | putchar('\t'); |
| 102 | off = ino[i]; |
| 103 | for (n = ino[i + 1]; n < off; n++) |
| 104 | if (pag[n] != 0) |
| 105 | putchar(pag[n]); |
| 106 | putchar('\n'); |
| 107 | off = ino[i + 1]; |
| 108 | } |
| 109 | } |
| 110 | #endif |
projects / p5sagit/p5-mst-13.2.git / blame