// ------------------------------------------------------------------------------------------------
int64_t ParseTokenAsInt64(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return 0L;
}
if (t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'L') {
err_out = "failed to parse Int64, unexpected data type";
return 0L;
}
BE_NCONST int64_t id = SafeParse<int64_t>(data + 1, t.end());
AI_SWAP8(id);
return id;
}
// XXX: should use size_t here
unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
ai_assert(length > 0);
const char* out;
const int64_t id = strtol10_64(t.begin(), &out, &length);
if (out > t.end()) {
err_out = "failed to parse Int64 (text)";
return 0L;
}
return id;
}
// ------------------------------------------------------------------------------------------------
int ParseTokenAsInt(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return 0;
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'I') {
err_out = "failed to parse I(nt), unexpected data type (binary)";
return 0;
}
BE_NCONST int32_t ival = SafeParse<int32_t>(data+1, t.end());
AI_SWAP4(ival);
return static_cast<int>(ival);
}
ai_assert(static_cast<size_t>(t.end() - t.begin()) > 0);
const char* out;
const int intval = strtol10(t.begin(),&out);
if (out != t.end()) {
err_out = "failed to parse ID";
return 0;
}
return intval;
}
// ------------------------------------------------------------------------------------------------
size_t ParseTokenAsDim(const Token& t, const char*& err_out)
{
// same as ID parsing, except there is a trailing asterisk
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return 0;
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'L') {
err_out = "failed to parse ID, unexpected data type, expected L(ong) (binary)";
return 0;
}
BE_NCONST uint64_t id = SafeParse<uint64_t>(data+1, t.end());
AI_SWAP8(id);
return static_cast<size_t>(id);
}
if(*t.begin() != '*') {
err_out = "expected asterisk before array dimension";
return 0;
}
// XXX: should use size_t here
unsigned int length = static_cast<unsigned int>(t.end() - t.begin());
if(length == 0) {
err_out = "expected valid integer number after asterisk";
return 0;
}
const char* out;
const size_t id = static_cast<size_t>(strtoul10_64(t.begin() + 1,&out,&length));
if (out > t.end()) {
err_out = "failed to parse ID";
return 0;
}
return id;
}
// ------------------------------------------------------------------------------------------------
std::string ParseTokenAsString(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return "";
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'S') {
err_out = "failed to parse S(tring), unexpected data type (binary)";
return "";
}
ai_assert(t.end() - data >= 5);
// read string length
BE_NCONST int32_t len = *reinterpret_cast<const int32_t*>(data+1);
AI_SWAP4(len);
ai_assert(t.end() - data == 5 + len);
return std::string(data + 5, len);
}
const size_t length = static_cast<size_t>(t.end() - t.begin());
if(length < 2) {
err_out = "token is too short to hold a string";
return "";
}
const char* s = t.begin(), *e = t.end() - 1;
if (*s != '\"' || *e != '\"') {
err_out = "expected double quoted string";
return "";
}
return std::string(s+1,length-2);
}
// ------------------------------------------------------------------------------------------------
float ParseTokenAsFloat(const Token& t, const char*& err_out)
{
err_out = NULL;
if (t.Type() != TokenType_DATA) {
err_out = "expected TOK_DATA token";
return 0.0f;
}
if(t.IsBinary())
{
const char* data = t.begin();
if (data[0] != 'F' && data[0] != 'D') {
err_out = "failed to parse F(loat) or D(ouble), unexpected data type (binary)";
return 0.0f;
}
if (data[0] == 'F') {
ai_assert(t.end() - data == 5);
// no byte swapping needed for ieee floats
return *reinterpret_cast<const float*>(data+1);
}
else {
ai_assert(t.end() - data == 9);
// no byte swapping needed for ieee floats
return static_cast<float>(*reinterpret_cast<const double*>(data+1));
}
}
// need to copy the input string to a temporary buffer
// first - next in the fbx token stream comes ',',
// which fast_atof could interpret as decimal point.
#define MAX_FLOAT_LENGTH 31
char temp[MAX_FLOAT_LENGTH + 1];
const size_t length = static_cast<size_t>(t.end()-t.begin());
std::copy(t.begin(),t.end(),temp);
temp[std::min(static_cast<size_t>(MAX_FLOAT_LENGTH),length)] = '\0';
return fast_atof(temp);
}
