// Fix
void NoVoHT::merge() {
//while(write_lock){}
//write_lock=true;
sem_wait(&map_lock);
sem_wait(&write_lock);
char buf[300];
char sec[300];
rewind(dbfile);
while (readTabString(dbfile, buf) != NULL) {
if (buf[0] == '~') {
readTabString(dbfile, sec);
char * pos;
pos = strtok(sec, ",");
while (pos != NULL) {
fseek(swapFile, (off_t) atoi(pos), SEEK_SET);
char test[300];
readTabString(swapFile, test);
if (strcmp(test, (buf + 1)) == 0) {
fseek(swapFile, (off_t) atoi(pos), SEEK_SET);
fputc('~', swapFile);
}
pos = strtok(NULL, ",");
}
} else {
//while (map_lock) {}
//map_lock = true;
//sem_wait(&map_lock);
fseek(swapFile, 0, SEEK_END);
string s(buf);
kvpair* p = kvpairs[hash(s) % size];
while (p != NULL) {
if (p->key.compare(s) == 0) {
destroyFposList(p->positions);
p->positions = new fpos_list;
p->positions->next = NULL;
fgetpos(swapFile, &(p->positions->pos));
fprintf(swapFile, "%s\t%s\t", p->key.c_str(),
p->val.c_str());
p->diff = false;
break;
} else
p = p->next;
}
//map_lock = false;
//sem_post(&map_lock);
}
}
fclose(dbfile);
dbfile = swapFile;
rewriting = false;
sem_post(&map_lock);
sem_post(&write_lock);
}
void NoVoHT::readFile(){
if(!dbfile) return;
char s[300];
char v[300];
while(readTabString(dbfile, s) != NULL){
string key(s);
if (readTabString(dbfile, v) == NULL) break;
string val(v);
if (key[0] != '~'){
put(key,val);
}
}
writeFile();
}
// rewrite this shit
void NoVoHT::readFile() {
//if ((dbfile = fopen(".nddovoht.mrg", "r")) == 0){
if (filename.empty()) return;
rename(filename.c_str(), ".novoht.swp");
dbfile = fopen(filename.c_str(), "w+");
setvbuf(dbfile,NULL, _IONBF, 0);
if ((swapFile = fopen(".novoht.swp", "r")) == NULL)
return;
rewriting = false;
char s[300];
char v[300];
while (readTabString(swapFile, s) != NULL) {
string key(s);
if (readTabString(swapFile, v) == NULL)
break;
string val(v);
if (key[0] != '~') {
put(key, val);
}
}
fclose(swapFile);
if (unlink(".novoht.swp")) perror("Error deleting swap file");
//FILE * mergeFile;
if ((swapFile = fopen(".novoht.mrg", "r")) != NULL){ // Corrupted close, merging changes
char buf[300];
char sec[300];
while (readTabString(swapFile,buf) != NULL){
if(buf[0] == '~'){
remove(buf+1);
readTabString(swapFile, sec);
}
else{
readTabString(swapFile,sec);
put(string(buf), string(sec));
}
}
int rmrc = unlink(".novoht.mrg");
if (rmrc) {
perror("Error deleting merge file");
}
}
}
