| Commit | Line | Data |
|---|
| 463ee0b2 |
1 | /* |
| 2 | * dbd - dump a dbm data file |
| 3 | */ |
| 4 | |
| 5 | #include <stdio.h> |
| 6 | #include <sys/file.h> |
| 17f28c40 |
7 | #include "EXTERN.h" |
| 463ee0b2 |
8 | #include "sdbm.h" |
| 9 | |
| 10 | char *progname; |
| 11 | extern void oops(); |
| 12 | |
| 13 | |
| 14 | #define empty(page) (((short *) page)[0] == 0) |
| 15 | |
| 16 | int |
| ba106d47 |
17 | main(int argc, char **argv) |
| 463ee0b2 |
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); |
| db7c17d7 |
28 | if (!name) |
| 29 | oops("cannot get memory"); |
| 30 | |
| 463ee0b2 |
31 | strcpy(name, p); |
| 32 | strcpy(name + n, ".pag"); |
| 33 | |
| 34 | if ((pagf = open(name, O_RDONLY)) < 0) |
| 35 | oops("cannot open %s.", name); |
| 36 | |
| 37 | sdump(pagf); |
| 38 | } |
| 39 | else |
| 40 | oops("usage: %s dbname", progname); |
| 41 | return 0; |
| 42 | } |
| 43 | |
| ba106d47 |
44 | void |
| 45 | sdump(int pagf) |
| 463ee0b2 |
46 | { |
| 47 | register r; |
| 48 | register n = 0; |
| 49 | register o = 0; |
| 50 | char pag[PBLKSIZ]; |
| 51 | |
| 52 | while ((r = read(pagf, pag, PBLKSIZ)) > 0) { |
| 53 | if (!okpage(pag)) |
| 54 | fprintf(stderr, "%d: bad page.\n", n); |
| 55 | else if (empty(pag)) |
| 56 | o++; |
| 57 | else |
| 58 | dispage(pag); |
| 59 | n++; |
| 60 | } |
| 61 | |
| 62 | if (r == 0) |
| 63 | fprintf(stderr, "%d pages (%d holes).\n", n, o); |
| 64 | else |
| 65 | oops("read failed: block %d", n); |
| 66 | } |
| 67 | |
| 68 | |
| 69 | #ifdef OLD |
| ba106d47 |
70 | int |
| 71 | dispage(char *pag) |
| 463ee0b2 |
72 | { |
| 73 | register i, n; |
| 74 | register off; |
| 75 | register short *ino = (short *) pag; |
| 76 | |
| 77 | off = PBLKSIZ; |
| 78 | for (i = 1; i < ino[0]; i += 2) { |
| 79 | printf("\t[%d]: ", ino[i]); |
| 80 | for (n = ino[i]; n < off; n++) |
| 81 | putchar(pag[n]); |
| 82 | putchar(' '); |
| 83 | off = ino[i]; |
| 84 | printf("[%d]: ", ino[i + 1]); |
| 85 | for (n = ino[i + 1]; n < off; n++) |
| 86 | putchar(pag[n]); |
| 87 | off = ino[i + 1]; |
| 88 | putchar('\n'); |
| 89 | } |
| 90 | } |
| 91 | #else |
| ba106d47 |
92 | void |
| 93 | dispage(char *pag) |
| 463ee0b2 |
94 | { |
| 95 | register i, n; |
| 96 | register off; |
| 97 | register short *ino = (short *) pag; |
| 98 | |
| 99 | off = PBLKSIZ; |
| 100 | for (i = 1; i < ino[0]; i += 2) { |
| 101 | for (n = ino[i]; n < off; n++) |
| 102 | if (pag[n] != 0) |
| 103 | putchar(pag[n]); |
| 104 | putchar('\t'); |
| 105 | off = ino[i]; |
| 106 | for (n = ino[i + 1]; n < off; n++) |
| 107 | if (pag[n] != 0) |
| 108 | putchar(pag[n]); |
| 109 | putchar('\n'); |
| 110 | off = ino[i + 1]; |
| 111 | } |
| 112 | } |
| 113 | #endif |
projects / p5sagit/p5-mst-13.2.git / blame