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#include "tes3subrecord.h"
#include "espexceptions.h"
#include "esptypes.h"
#include <cstdint>
#include <string>
#include <unordered_map>
ESP::TES3SubRecord::TES3SubRecord() : m_Type(TYPE_UNKNOWN), m_Data() {}
bool ESP::TES3SubRecord::readFrom(std::istream& stream, uint32_t sizeOverride)
{
static std::unordered_map<std::string, EType> s_TypeMap = {
{"HEDR", TYPE_HEDR}, {"MAST", TYPE_MAST}, {"DATA", TYPE_DATA}};
char typeString[5];
if (!stream.read(typeString, 4)) {
if (stream.gcount() == 0) {
return false;
} else {
throw ESP::InvalidRecordException("sub-record incomplete (unknown type)");
}
}
if (stream.gcount() != 4) {
throw ESP::InvalidRecordException(
std::string("sub-record type incomplete (invalid type ") + typeString + ")");
}
typeString[4] = '\0'; // not sure if this is required, shouldn't be
auto iter = s_TypeMap.find(std::string(typeString));
uint32_t dataSize;
if (iter != s_TypeMap.end()) {
m_Type = iter->second;
dataSize = readType<uint32_t>(stream);
} else {
m_Type = TYPE_UNKNOWN;
dataSize = readType<uint32_t>(stream);
stream.seekg(8, std::istream::cur);
}
if (sizeOverride != 0UL) {
dataSize = sizeOverride;
}
m_Data.resize(dataSize);
if (dataSize > 0) {
stream.read(reinterpret_cast<char*>(m_Data.data()), dataSize);
}
if (!stream) {
throw ESP::InvalidRecordException(std::string("sub-record incomplete: ") +
typeString);
}
return true;
}
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