showdb.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
#pragma ident "%Z%%M% %I% %E% SMI"
/*
** A utility for printing all or part of an SQLite database file.
*/
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
static int pagesize = 1024;
static int db = -1;
static int mxPage = 0;
static void out_of_memory(void){
fprintf(stderr,"Out of memory...\n");
exit(1);
}
static print_page(int iPg){
unsigned char *aData;
int i, j;
aData = malloc(pagesize);
if( aData==0 ) out_of_memory();
lseek(db, (iPg-1)*pagesize, SEEK_SET);
read(db, aData, pagesize);
fprintf(stdout, "Page %d:\n", iPg);
for(i=0; i<pagesize; i += 16){
fprintf(stdout, " %03x: ",i);
for(j=0; j<16; j++){
fprintf(stdout,"%02x ", aData[i+j]);
}
for(j=0; j<16; j++){
fprintf(stdout,"%c", isprint(aData[i+j]) ? aData[i+j] : '.');
}
fprintf(stdout,"\n");
}
free(aData);
}
int main(int argc, char **argv){
struct stat sbuf;
if( argc<2 ){
fprintf(stderr,"Usage: %s FILENAME ?PAGE? ...\n", argv[0]);
exit(1);
}
db = open(argv[1], O_RDONLY);
if( db<0 ){
fprintf(stderr,"%s: can't open %s\n", argv[0], argv[1]);
exit(1);
}
fstat(db, &sbuf);
mxPage = sbuf.st_size/pagesize + 1;
if( argc==2 ){
int i;
for(i=1; i<=mxPage; i++) print_page(i);
}else{
int i;
for(i=2; i<argc; i++){
int iStart, iEnd;
char *zLeft;
iStart = strtol(argv[i], &zLeft, 0);
if( zLeft && strcmp(zLeft,"..end")==0 ){
iEnd = mxPage;
}else if( zLeft && zLeft[0]=='.' && zLeft[1]=='.' ){
iEnd = strtol(&zLeft[2], 0, 0);
}else{
iEnd = iStart;
}
if( iStart<1 || iEnd<iStart || iEnd>mxPage ){
fprintf(stderr,
"Page argument should be LOWER?..UPPER?. Range 1 to %d\n",
mxPage);
exit(1);
}
while( iStart<=iEnd ){
print_page(iStart);
iStart++;
}
}
}
close(db);
}