thdatwrapper.cpp

#include "thdatwrapper.hpp"
#include <cstdlib>
#include <cstring>

thDatWrapper::thDatWrapper(const fs::path &datpath, unsigned ver)
{
    thtk_error_t *e = NULL;
#if PATH_VALSIZE == 2
    datf = thtk_io_open_file_w(datpath.c_str(), L"rb", &e);
#else
    datf = thtk_io_open_file(datpath.c_str(), "rb", &e);
#endif
    thtk_error_free(&e);
    dat = thdat_open(ver, datf, &e);
    if (!dat)
        //just try the latest supported version instead
    {
        thtk_error_free(&e);
        dat = thdat_open(17, datf, &e);
    }
    thtk_error_free(&e);
}
ssize_t thDatWrapper::getFileSize(const char *path)
{
    thtk_error_t *e = NULL;
    int en = thdat_entry_by_name(dat, path, &e);
    thtk_error_free(&e);
    if (!~en)return -1;
    return thdat_entry_get_size(dat, en, &e);
}
int thDatWrapper::getFile(const char *path, char *dest)
{
    thtk_error_t *e = NULL;
    int en = thdat_entry_by_name(dat, path, &e);
    thtk_error_free(&e);
    if (!~en)return -1;
    ssize_t sz = thdat_entry_get_size(dat, en, &e);
    thtk_error_free(&e);
    void *m = malloc(sz);
    thtk_io_t *mf = thtk_io_open_memory(m, sz, &e);
    thtk_error_free(&e);
    ssize_t r = thdat_entry_read_data(dat, en, mf, &e);
    if (!~r)return -1;
    thtk_error_free(&e);
    memcpy(dest, m, sz);
    thtk_io_close(mf);
    return 0;
}
thDatWrapper::~thDatWrapper()
{
    thtk_error_t *e = NULL;
    thdat_close(dat, &e);
    thtk_error_free(&e);
    thtk_io_close(datf);
}