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