45 lines
976 B
C
45 lines
976 B
C
/*
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** A utility for printing the differences between two SQLite database files.
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*/
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#include <stdio.h>
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#include <ctype.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <stdlib.h>
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#define PAGESIZE 1024
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static int db1 = -1;
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static int db2 = -1;
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int main(int argc, char **argv){
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int iPg;
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unsigned char a1[PAGESIZE], a2[PAGESIZE];
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if( argc!=3 ){
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fprintf(stderr,"Usage: %s FILENAME FILENAME\n", argv[0]);
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exit(1);
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}
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db1 = open(argv[1], O_RDONLY);
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if( db1<0 ){
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fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
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exit(1);
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}
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db2 = open(argv[2], O_RDONLY);
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if( db2<0 ){
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fprintf(stderr,"%s: can't open %s\n", argv[0], argv[2]);
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exit(1);
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}
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iPg = 1;
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while( read(db1, a1, PAGESIZE)==PAGESIZE && read(db2,a2,PAGESIZE)==PAGESIZE ){
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if( memcmp(a1,a2,PAGESIZE) ){
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printf("Page %d\n", iPg);
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}
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iPg++;
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}
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printf("%d pages checked\n", iPg-1);
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close(db1);
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close(db2);
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}
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