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#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <stdint.h>
#include "cbuffer.h"
#include <inttypes.h>
int debug = 0;
void usage(char* p){
fprintf(stderr, "Usage: \n\
%s /path/to/ibdata db/table\n", p);
}
int main(int argc, char** argv)
{
byte* pattern;
unsigned long int pattern_size;
unsigned long int cb_buffer_size = 10*1024*1024;
unsigned long int i = 0, j, pos;
uint64_t table_id = 0;
if(argc != 3){
usage(argv[0]);
exit(EXIT_FAILURE);
}
FILE *f = fopen(argv[1], "r");
if(f == NULL){
fprintf(stderr, "Can't open file '%s'\n", argv[1]);
perror("fopen()");
usage(argv[0]);
exit(EXIT_FAILURE);
}
if(NULL == (pattern = malloc(strlen(argv[2]) + 2))){
fprintf(stderr, "Can't allocate %zu bytes for the pattern", strlen(argv[2]));
perror("malloc()");
exit(EXIT_FAILURE);
}
memcpy(pattern, argv[2], strlen(argv[2]));
pattern[strlen(argv[2])] = 0x03;
pattern[strlen(argv[2]) + 1] = 0x08;
pattern_size = strlen(argv[2]) + 2;
if(debug){
fprintf(stderr, "pattern size: %lu\n", pattern_size);
fprintf(stderr, "pattern\nascii: ");
for(i = 0; i < pattern_size; i++){
fprintf(stderr, "%c", pattern[i]);
}
fprintf(stderr, "\n");
fprintf(stderr, "hex: ");
for(i = 0; i < pattern_size; i++){
fprintf(stderr, "%02X ", pattern[i]);
}
fprintf(stderr, "\n");
}
CircularBuffer cb;
ElemType elem;
elem.value = 0;
cbInit(&cb, cb_buffer_size);
int pattern_found = 0;
while(!feof(f)){
pos = cbGetPos(&cb);
pattern_found = 1;
for(j = 0; j < pattern_size; j++){
if(cbIsEmpty(&cb)){
cbFill(&cb, f);
}
if(!cbIsEmpty(&cb)){
cbRead(&cb, &elem);
if(pattern[j] != elem.value){
pattern_found = 0;
}
}
}
if(pattern_found){
if(debug) fprintf(stderr, "Pattern found\n");
// pattern matches if we reached here
// read next 8 bytes and print
for(j = 0; j < 8; j++){
if(cbIsEmpty(&cb)){
cbFill(&cb, f);
}
if(!cbIsEmpty(&cb)){
cbRead(&cb, &elem);
table_id = table_id | (elem.value << i);
}
}
printf("%s %" PRIu64 "\n", argv[2], table_id );
}
else{
if(debug) fprintf(stderr, "Pattern not found\n");
cbSetPos(&cb, pos+1);
}
}
return EXIT_SUCCESS;
}
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