static void adjust_map_to_zip_entry(struct mapped_file *map,
const char *entry_name)
{
const struct zip_eocd *eocd;
const struct zip_cd *cd;
const struct zip_lfh *lfh;
uint32_t entry_size;
uint32_t entry_offset;
eocd = find_eocd(map->map, map->map_size);
cd = find_cd_for_entry(map->map, map->map_size, eocd, entry_name);
lfh = find_lfh_for_entry(map->map, map->map_size, cd);
entry_size = lfh->compressed_size;
entry_offset = (const uint8_t *)lfh - (const uint8_t *)map->map +
sizeof(*lfh) + dtohs(lfh->filename_length) +
dtohs(lfh->extra_length);
map->data = (const uint8_t *)map->map + entry_offset;
map->data_size = entry_size;
}
int ZipTree::parse()
{
FILE* fp = fopen(zip.c_str(), "rb");
if (fp == NULL) {
return __LINE__;
}
//TODO linux use lseek
int ret = _fseeki64(fp, 0, SEEK_END);
if (ret != 0) {
return __LINE__;
}
long long len = _ftelli64(fp);
if (len > 65535) {
_fseeki64(fp, -65535, SEEK_END);
}
else {
_fseeki64(fp, 0, SEEK_SET);
}
// find eocd
long long cur = _ftelli64(fp);
ZipEocd* eocd = find_eocd(fp, cur, len);
if (eocd == NULL) {
std::cout << "not found End of Central Directory" << std::endl;
fclose(fp);
return __LINE__;
}
_fseeki64(fp, eocd->cd_start, SEEK_SET);
// read central directories
uint64_t hd_start = eocd->cd_start;
uint64_t hd_num = eocd->cd_total;
delete eocd;
std::cout << "hd_num:"<<hd_num<<" hd_start:" << hd_start << std::endl;
for (int i = 0; i < hd_num; i++) {
ZipCdHeader* cd_header = find_cd_header(fp);
if (cd_header == NULL) {
std::cout<<"find ZipCdHeader error at "<<i<<std::endl;
fclose(fp);
return __LINE__;
}
std::shared_ptr<ZipNode> item ( new ZipNode());
std::string name;
name.assign((char*)cd_header->name, cd_header->name_len);
item->set_name(name);
//
// std::cout <<"parse done:" << item->get_name().c_str() << std::endl;
// add
bool ok =root->add_child(item);
if (!ok) {
std::cout << "add child error. " << name.c_str() << std::endl;
delete cd_header;
fclose(fp);
return __LINE__;
}
// udpate size and it's parent size
item->add_size(cd_header->size, cd_header->csize);
// delete tmp header
delete cd_header;
}
fclose(fp);
return 0;
}
