You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
openmw-tes3coop/components/esm/esmcommon.hpp

83 lines
2.1 KiB
C++

#ifndef OPENMW_ESM_COMMON_H
#define OPENMW_ESM_COMMON_H
#include <string>
#include <cstring>
#include <stdint.h>
#include <string.h>
namespace ESM
{
enum Version
{
VER_12 = 0x3f99999a,
VER_13 = 0x3fa66666
};
/* A structure used for holding fixed-length strings. In the case of
LEN=4, it can be more efficient to match the string as a 32 bit
number, therefore the struct is implemented as a union with an int.
*/
template <int LEN>
union NAME_T
{
char name[LEN];
uint32_t val;
bool operator==(const char *str) const
{
for(int i=0; i<LEN; i++)
if(name[i] != str[i]) return false;
else if(name[i] == 0) return true;
return str[LEN] == 0;
}
bool operator!=(const char *str) const { return !((*this)==str); }
bool operator==(const std::string &str) const
{
return (*this) == str.c_str();
}
bool operator!=(const std::string &str) const { return !((*this)==str); }
bool operator==(uint32_t v) const { return v == val; }
bool operator!=(uint32_t v) const { return v != val; }
std::string toString() const { return std::string(name, strnlen(name, LEN)); }
void assign (const std::string& value) { std::strncpy (name, value.c_str(), LEN); }
};
typedef NAME_T<4> NAME;
typedef NAME_T<32> NAME32;
typedef NAME_T<64> NAME64;
typedef NAME_T<256> NAME256;
/* This struct defines a file 'context' which can be saved and later
restored by an ESMReader instance. It will save the position within
a file, and when restored will let you read from that position as
if you never left it.
*/
struct ESM_Context
{
std::string filename;
uint32_t leftRec, leftSub;
size_t leftFile;
NAME recName, subName;
// When working with multiple esX files, we will generate lists of all files that
// actually contribute to a specific cell. Therefore, we need to store the index
// of the file belonging to this contest. See CellStore::(list/load)refs for details.
int index;
// True if subName has been read but not used.
bool subCached;
// File position. Only used for stored contexts, not regularly
// updated within the reader itself.
size_t filePos;
};
}
#endif