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 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