1 /* 2 ** A utility for printing all or part of an SQLite database file. 3 */ 4 #include <stdio.h> 5 #include <ctype.h> 6 #include <sys/types.h> 7 #include <sys/stat.h> 8 #include <fcntl.h> 9 #include <unistd.h> 10 #include <stdlib.h> 11 12 13 static int pagesize = 1024; 14 static int db = -1; 15 static int mxPage = 0; 16 17 static void out_of_memory(void){ 18 fprintf(stderr,"Out of memory...\n"); 19 exit(1); 20 } 21 22 static print_page(int iPg){ 23 unsigned char *aData; 24 int i, j; 25 aData = malloc(pagesize); 26 if( aData==0 ) out_of_memory(); 27 lseek(db, (iPg-1)*pagesize, SEEK_SET); 28 read(db, aData, pagesize); 29 fprintf(stdout, "Page %d:\n", iPg); 30 for(i=0; i<pagesize; i += 16){ 31 fprintf(stdout, " %03x: ",i); 32 for(j=0; j<16; j++){ 33 fprintf(stdout,"%02x ", aData[i+j]); 34 } 35 for(j=0; j<16; j++){ 36 fprintf(stdout,"%c", isprint(aData[i+j]) ? aData[i+j] : '.'); 37 } 38 fprintf(stdout,"\n"); 39 } 40 free(aData); 41 } 42 43 int main(int argc, char **argv){ 44 struct stat sbuf; 45 if( argc<2 ){ 46 fprintf(stderr,"Usage: %s FILENAME ?PAGE? ...\n", argv[0]); 47 exit(1); 48 } 49 db = open(argv[1], O_RDONLY); 50 if( db<0 ){ 51 fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]); 52 exit(1); 53 } 54 fstat(db, &sbuf); 55 mxPage = sbuf.st_size/pagesize + 1; 56 if( argc==2 ){ 57 int i; 58 for(i=1; i<=mxPage; i++) print_page(i); 59 }else{ 60 int i; 61 for(i=2; i<argc; i++){ 62 int iStart, iEnd; 63 char *zLeft; 64 iStart = strtol(argv[i], &zLeft, 0); 65 if( zLeft && strcmp(zLeft,"..end")==0 ){ 66 iEnd = mxPage; 67 }else if( zLeft && zLeft[0]=='.' && zLeft[1]=='.' ){ 68 iEnd = strtol(&zLeft[2], 0, 0); 69 }else{ 70 iEnd = iStart; 71 } 72 if( iStart<1 || iEnd<iStart || iEnd>mxPage ){ 73 fprintf(stderr, 74 "Page argument should be LOWER?..UPPER?. Range 1 to %d\n", 75 mxPage); 76 exit(1); 77 } 78 while( iStart<=iEnd ){ 79 print_page(iStart); 80 iStart++; 81 } 82 } 83 } 84 close(db); 85 } 86