1*c5c4113dSnw141292
2*c5c4113dSnw141292 #pragma ident "%Z%%M% %I% %E% SMI"
3*c5c4113dSnw141292
4*c5c4113dSnw141292 /*
5*c5c4113dSnw141292 ** A utility for printing the differences between two SQLite database files.
6*c5c4113dSnw141292 */
7*c5c4113dSnw141292 #include <stdio.h>
8*c5c4113dSnw141292 #include <ctype.h>
9*c5c4113dSnw141292 #include <sys/types.h>
10*c5c4113dSnw141292 #include <sys/stat.h>
11*c5c4113dSnw141292 #include <fcntl.h>
12*c5c4113dSnw141292 #include <unistd.h>
13*c5c4113dSnw141292 #include <stdlib.h>
14*c5c4113dSnw141292
15*c5c4113dSnw141292
16*c5c4113dSnw141292 #define PAGESIZE 1024
17*c5c4113dSnw141292 static int db1 = -1;
18*c5c4113dSnw141292 static int db2 = -1;
19*c5c4113dSnw141292
main(int argc,char ** argv)20*c5c4113dSnw141292 int main(int argc, char **argv){
21*c5c4113dSnw141292 int iPg;
22*c5c4113dSnw141292 unsigned char a1[PAGESIZE], a2[PAGESIZE];
23*c5c4113dSnw141292 if( argc!=3 ){
24*c5c4113dSnw141292 fprintf(stderr,"Usage: %s FILENAME FILENAME\n", argv[0]);
25*c5c4113dSnw141292 exit(1);
26*c5c4113dSnw141292 }
27*c5c4113dSnw141292 db1 = open(argv[1], O_RDONLY);
28*c5c4113dSnw141292 if( db1<0 ){
29*c5c4113dSnw141292 fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
30*c5c4113dSnw141292 exit(1);
31*c5c4113dSnw141292 }
32*c5c4113dSnw141292 db2 = open(argv[2], O_RDONLY);
33*c5c4113dSnw141292 if( db2<0 ){
34*c5c4113dSnw141292 fprintf(stderr,"%s: can't open %s\n", argv[0], argv[2]);
35*c5c4113dSnw141292 exit(1);
36*c5c4113dSnw141292 }
37*c5c4113dSnw141292 iPg = 1;
38*c5c4113dSnw141292 while( read(db1, a1, PAGESIZE)==PAGESIZE && read(db2,a2,PAGESIZE)==PAGESIZE ){
39*c5c4113dSnw141292 if( memcmp(a1,a2,PAGESIZE) ){
40*c5c4113dSnw141292 printf("Page %d\n", iPg);
41*c5c4113dSnw141292 }
42*c5c4113dSnw141292 iPg++;
43*c5c4113dSnw141292 }
44*c5c4113dSnw141292 printf("%d pages checked\n", iPg-1);
45*c5c4113dSnw141292 close(db1);
46*c5c4113dSnw141292 close(db2);
47*c5c4113dSnw141292 }
48