size_t getfsize(const std::string & filename){
std::fstream file(filename.c_str(),std::ios::in);
if (file.bad())
return 0;
size_t ret = getfsize(file);
file.close();
return ret;
}
int loadfile(const std::string&filename, std::string& str){
std::fstream file(filename.c_str(),std::ios::in|std::ios::binary);
if (file.is_open()){
int sz = getfsize(file);
str.resize(sz);
file.read(&str[0],sz);
file.close();
return 1;
}
return 0;
}
int loadfile(const std::string& filename, std::vector<unsigned char>& vec){
std::fstream file(filename.c_str(),std::ios::in|std::ios::binary);
if (file.is_open()){
int sz = getfsize(file);
vec.resize(sz);
file.read((char*)&vec[0],sz);
file.close();
return 1;
}
return 0;
}
int sar_create(const char *fout, int argc, const char *argv[])
{
int i;
FILE *in, *out;
struct sar_header header;
struct sar_entry entry;
assert(out = fopen(fout, "wb"));
/* copy header */
memset(&header, 0, sizeof(header));
header.n = argc;
strncpy(header.sar, "SAR", 4);
assert(fwrite(&header, sizeof(header), 1, out) == 1);
/* copy files */
for (i=0; i<argc; i++) {
assert(in = fopen(argv[i], "rb"));
docpy(in, out, getfsize(in));
assert(!fclose(in));
}
/* make index & md5 */
for (i=0, entry.beg = sizeof(header);
i < argc;
i++, entry.beg += entry.size) {
strncpy(entry.fname, argv[i], sizeof(entry.fname));
assert(in = fopen(argv[i], "rb"));
entry.size = getfsize(in);
domd5(entry.md5, in, entry.size);
assert(!fclose(in));
assert(fwrite(&entry, sizeof(entry), 1, out) == 1);
}
assert(!fclose(out));
return 0;
}
std::string readfilepart(const std::string& filename, long pos, long size){
std::fstream file(filename.c_str(),std::ios::in|std::ios::binary);
long dif = getfsize(filename) - pos;
if (dif<0)
return "";
if (dif<size)
size=dif;
file.seekg(pos);
file.seekp(pos);
std::string buff;buff.resize(size);
file.read(&buff[0],size);
file.close();
return buff;
}
