/** read write bytes **/
Bytes* read_bytes(const char* path){
if(!path) return 0;
if(FILE* fp =fopen(path, "rb")){
if(0 != fseek(fp, 0, SEEK_END)){
ERROR("fail read %s, %s", path, get_last_error_desc());
fclose(fp);
return 0;
}
const int64_t s =ftell(fp);
if(s == -1){
ERROR("fail read %s, %s", path, get_last_error_desc());
fclose(fp);
return 0;
}
if(0 != fseek(fp, 0, SEEK_SET)){
ERROR("fail read %s, %s", path, get_last_error_desc());
fclose(fp);
return 0;
}
Bytes* content =SafeNew<Bytes>();
content->resize(s);
char* ptr =content->c_str();
size_t cursor =0;
while(cursor < (size_t)s){
const size_t n =fread(ptr+cursor, 1, (size_t)s-cursor, fp);
if(n > 0){
cursor +=n;
}
else if(n == 0){
if(ferror(fp)){
return 0;
}
if(feof(fp)){
return content;
}
}
else{
ERROR("fail read %s, %s", path, get_last_error_desc());
fclose(fp);
return 0;
}
}
fclose(fp);
ASSERT(cursor == (size_t)s);
return content;
}
else{
ERROR("fail to open %s, %s", path, get_last_error_desc());
return 0;
}
}
Array* String::split(const char* sep){
// check & prepare
if(!sep) return 0;
if(m_length <= 0) return 0;
Bytes* bs =SafeNew<Bytes>();
bs->set(m_data, m_length+1);
char* sz =bs->c_str();
Array* arr =SafeNew<Array>();
char* saveptr =0;
// split
char* token =strtok_r(sz, sep, &saveptr);
while(token){
arr->push_back(String::NewString(token));
token =strtok_r(0, sep, &saveptr);
}
return arr;
}
String* BitSet::toString(){
Bytes* bs =SafeNew<Bytes>();
uint64_t set_cnt =0;
const uint64_t max_set_cnt =count();
const uint64_t bits_count =m_bits_holder_count * 64;
bs->reserve(bits_count);
for(uint64_t i=0; i<bits_count; ++i){
if(test(i)){
bs->write("1", 1);
++set_cnt;
if(set_cnt == max_set_cnt){
break;
}
}
else{
bs->write("0", 1);
}
}
return String::New(bs->c_str(), bs->size());
}