assimp/contrib/openddlparser/code/OpenDDLParser.cpp

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/*-----------------------------------------------------------------------------------------------
The MIT License (MIT)
Copyright (c) 2014-2015 Kim Kulling
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-----------------------------------------------------------------------------------------------*/
#include <openddlparser/OpenDDLParser.h>
#include <cassert>
#include <iostream>
#include <sstream>
#include <algorithm>
#include <math.h>
#ifdef _WIN32
# include <windows.h>
#endif // _WIN32
#define DEBUG_HEADER_NAME
BEGIN_ODDLPARSER_NS
static const char *Version = "0.1.0";
namespace Grammar {
static const char *OpenBracketToken = "{";
static const char *CloseBracketToken = "}";
static const char *OpenPropertyToken = "(";
static const char *ClosePropertyToken = ")";
static const char *BoolTrue = "true";
static const char *BoolFalse = "false";
static const char *RefToken = "ref";
static const char *CommaSeparator = ",";
static const char* PrimitiveTypeToken[ Value::ddl_types_max ] = {
"bool",
"int8",
"int16",
"int32",
"int64",
"unsigned_int8",
"unsigned_int16",
"unsigned_int32",
"unsigned_int64",
"half",
"float",
"double",
"string",
"ref"
};
} // Namespace Grammar
static void logInvalidTokenError( char *in, const std::string &exp, OpenDDLParser::logCallback callback ) {
std::stringstream stream;
stream << "Invalid token " << *in << ", " << exp << " expected." << std::endl;
callback( ddl_error_msg, stream.str() );
}
static bool isIntegerType( Value::ValueType integerType ) {
if( integerType != Value::ddl_int8 && integerType != Value::ddl_int16 &&
integerType != Value::ddl_int32 && integerType != Value::ddl_int64 ) {
return false;
}
return true;
}
static DDLNode *createDDLNode( Identifier *id, OpenDDLParser *parser ) {
if( ddl_nullptr == id || ddl_nullptr == parser ) {
return ddl_nullptr;
}
const std::string type( id->m_buffer );
DDLNode *parent( parser->top() );
DDLNode *node = DDLNode::create( type, "", parent );
return node;
}
static void logMessage( LogSeverity severity, const std::string &msg ) {
std::string log;
if( ddl_debug_msg == severity ) {
log += "Debug:";
} else if( ddl_info_msg == severity ) {
log += "Info :";
} else if( ddl_warn_msg == severity ) {
log += "Warn :";
} else if( ddl_error_msg == severity ) {
log += "Error:";
} else {
log += "None :";
}
log += msg;
std::cout << log;
}
OpenDDLParser::OpenDDLParser()
: m_logCallback( logMessage )
, m_buffer()
, m_stack()
, m_context( ddl_nullptr ) {
// empty
}
OpenDDLParser::OpenDDLParser( char *buffer, size_t len )
: m_logCallback( &logMessage )
, m_buffer()
, m_context( ddl_nullptr ) {
if( 0 != len ) {
setBuffer( buffer, len );
}
}
OpenDDLParser::~OpenDDLParser() {
clear();
}
void OpenDDLParser::setLogCallback( logCallback callback ) {
if( ddl_nullptr != callback ) {
// install user-specific log callback
m_logCallback = callback;
} else {
// install default log callback
m_logCallback = &logMessage;
}
}
OpenDDLParser::logCallback OpenDDLParser::getLogCallback() const {
return m_logCallback;
}
void OpenDDLParser::setBuffer( char *buffer, size_t len ) {
clear();
if( 0 == len ) {
return;
}
m_buffer.resize( len );
::memcpy(&m_buffer[ 0 ], buffer, len );
}
void OpenDDLParser::setBuffer( const std::vector<char> &buffer ) {
clear();
m_buffer.resize( buffer.size() );
std::copy( buffer.begin(), buffer.end(), m_buffer.begin() );
}
const char *OpenDDLParser::getBuffer() const {
if( m_buffer.empty() ) {
return ddl_nullptr;
}
return &m_buffer[ 0 ];
}
size_t OpenDDLParser::getBufferSize() const {
return m_buffer.size();
}
void OpenDDLParser::clear() {
m_buffer.resize( 0 );
if( m_context ) {
m_context->m_root = ddl_nullptr;
}
DDLNode::releaseNodes();
}
bool OpenDDLParser::parse() {
if( m_buffer.empty() ) {
return false;
}
normalizeBuffer( m_buffer );
std::cout << &m_buffer[0] << std::endl;
m_context = new Context;
m_context->m_root = DDLNode::create( "root", "", ddl_nullptr );
pushNode( m_context->m_root );
// do the main parsing
char *current( &m_buffer[ 0 ] );
char *end( &m_buffer[ m_buffer.size() - 1 ] + 1 );
size_t pos( current - &m_buffer[ 0 ] );
while( pos < m_buffer.size() ) {
current = parseNextNode( current, end );
pos = current - &m_buffer[ 0 ];
}
return true;
}
char *OpenDDLParser::parseNextNode( char *in, char *end ) {
in = parseHeader( in, end );
in = parseStructure( in, end );
return in;
}
static void dumpId( Identifier *id ) {
if( ddl_nullptr != id ) {
std::cout << id->m_buffer << std::endl;
}
}
char *OpenDDLParser::parseHeader( char *in, char *end ) {
if( ddl_nullptr == in || in == end ) {
return in;
}
Identifier *id( ddl_nullptr );
in = OpenDDLParser::parseIdentifier( in, end, &id );
#ifdef DEBUG_HEADER_NAME
dumpId( id );
#endif // DEBUG_HEADER_NAME
in = lookForNextToken( in, end );
Property *first( ddl_nullptr );
if( ddl_nullptr != id ) {
if( *in == '(' ) {
in++;
Property *prop( ddl_nullptr ), *prev( ddl_nullptr );
while( *in != ')' && in != end ) {
in = OpenDDLParser::parseProperty( in, end, &prop );
in = lookForNextToken( in, end );
if( *in != ',' && *in != ')' ) {
logInvalidTokenError( in, ")", m_logCallback );
return in;
}
if( ddl_nullptr != prop && *in != ',' ) {
if( ddl_nullptr == first ) {
first = prop;
}
if( ddl_nullptr != prev ) {
prev->m_next = prop;
}
prev = prop;
}
}
in++;
}
// store the node
DDLNode *node( createDDLNode( id, this ) );
if( ddl_nullptr != node ) {
pushNode( node );
} else {
std::cerr << "nullptr returned by creating DDLNode." << std::endl;
}
// set the properties
if( ddl_nullptr != first ) {
node->setProperties( first );
}
Name *name( ddl_nullptr );
in = OpenDDLParser::parseName( in, end, &name );
if( ddl_nullptr != name ) {
const std::string nodeName( name->m_id->m_buffer );
node->setName( nodeName );
}
}
return in;
}
char *OpenDDLParser::parseStructure( char *in, char *end ) {
if( ddl_nullptr == in || in == end ) {
return in;
}
bool error( false );
in = lookForNextToken( in, end );
if( *in == '{' ) {
// loop over all children ( data and nodes )
do {
in = parseStructureBody( in, end, error );
} while ( *in != '}' );
in++;
} else {
in++;
logInvalidTokenError( in, std::string( Grammar::OpenBracketToken ), m_logCallback );
error = true;
return in;
}
in = lookForNextToken( in, end );
// pop node from stack after successful parsing
if( !error ) {
popNode();
}
return in;
}
static void setNodeValues( DDLNode *currentNode, Value *values ) {
if( ddl_nullptr != values ){
if( ddl_nullptr != currentNode ) {
currentNode->setValue( values );
}
}
}
static void setNodeReferences( DDLNode *currentNode, Reference *refs ) {
if( ddl_nullptr != refs ) {
if( ddl_nullptr != currentNode ) {
currentNode->setReferences( refs );
}
}
}
static void setNodeDataArrayList( DDLNode *currentNode, DataArrayList *dtArrayList ) {
if( ddl_nullptr != dtArrayList ) {
if( ddl_nullptr != currentNode ) {
currentNode->setDataArrayList( dtArrayList );
}
}
}
char *OpenDDLParser::parseStructureBody( char *in, char *end, bool &error ) {
if( !isNumeric( *in ) && !isCharacter( *in ) ) {
in++;
}
in = lookForNextToken( in, end );
Value::ValueType type( Value::ddl_none );
size_t arrayLen( 0 );
in = OpenDDLParser::parsePrimitiveDataType( in, end, type, arrayLen );
if( Value::ddl_none != type ) {
// parse a primitive data type
in = lookForNextToken( in, end );
if( *in == '{' ) {
Reference *refs( ddl_nullptr );
DataArrayList *dtArrayList( ddl_nullptr );
Value *values( ddl_nullptr );
if( 1 == arrayLen ) {
size_t numRefs( 0 ), numValues( 0 );
in = parseDataList( in, end, &values, numValues, &refs, numRefs );
setNodeValues( top(), values );
setNodeReferences( top(), refs );
} else if( arrayLen > 1 ) {
in = parseDataArrayList( in, end, &dtArrayList );
setNodeDataArrayList( top(), dtArrayList );
} else {
std::cerr << "0 for array is invalid." << std::endl;
error = true;
}
}
in = lookForNextToken( in, end );
if( *in != '}' ) {
logInvalidTokenError( in, std::string( Grammar::CloseBracketToken ), m_logCallback );
} else {
//in++;
}
} else {
// parse a complex data type
in = parseNextNode( in, end );
}
return in;
}
void OpenDDLParser::pushNode( DDLNode *node ) {
if( ddl_nullptr == node ) {
return;
}
m_stack.push_back( node );
}
DDLNode *OpenDDLParser::popNode() {
if( m_stack.empty() ) {
return ddl_nullptr;
}
DDLNode *topNode( top() );
m_stack.pop_back();
return topNode;
}
DDLNode *OpenDDLParser::top() {
if( m_stack.empty() ) {
return ddl_nullptr;
}
DDLNode *top( m_stack.back() );
return top;
}
DDLNode *OpenDDLParser::getRoot() const {
if( ddl_nullptr == m_context ) {
return ddl_nullptr;
}
return m_context->m_root;
}
Context *OpenDDLParser::getContext() const {
return m_context;
}
void OpenDDLParser::normalizeBuffer( std::vector<char> &buffer) {
if( buffer.empty() ) {
return;
}
std::vector<char> newBuffer;
const size_t len( buffer.size() );
char *end( &buffer[ len-1 ] + 1 );
for( size_t readIdx = 0; readIdx<len; ++readIdx ) {
char *c( &buffer[readIdx] );
// check for a comment
if( !isComment<char>( c, end ) && !isNewLine( *c ) ) {
newBuffer.push_back( buffer[ readIdx ] );
} else {
if( isComment<char>( c, end ) ) {
readIdx++;
// skip the comment and the rest of the line
while( !isEndofLine( buffer[ readIdx ] ) ) {
readIdx++;
}
}
}
}
buffer = newBuffer;
}
char *OpenDDLParser::parseName( char *in, char *end, Name **name ) {
*name = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
// ignore blanks
in = lookForNextToken( in, end );
if( *in != '$' && *in != '%' ) {
return in;
}
NameType ntype( GlobalName );
if( *in == '%' ) {
ntype = LocalName;
}
Name *currentName( ddl_nullptr );
Identifier *id( ddl_nullptr );
in = parseIdentifier( in, end, &id );
if( id ) {
currentName = new Name( ntype, id );
if( currentName ) {
*name = currentName;
}
}
return in;
}
char *OpenDDLParser::parseIdentifier( char *in, char *end, Identifier **id ) {
*id = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
// ignore blanks
in = lookForNextToken( in, end );
// staring with a number is forbidden
if( isNumeric<const char>( *in ) ) {
return in;
}
// get size of id
size_t idLen( 0 );
char *start( in );
while( !isSeparator( *in ) && !isNewLine( *in ) && ( in != end ) && *in != '(' && *in != ')' ) {
in++;
idLen++;
}
const size_t len( idLen + 1 );
Identifier *newId = new Identifier( len, new char[ len ] );
::strncpy( newId->m_buffer, start, newId->m_len-1 );
newId->m_buffer[ newId->m_len - 1 ] = '\0';
*id = newId;
return in;
}
char *OpenDDLParser::parsePrimitiveDataType( char *in, char *end, Value::ValueType &type, size_t &len ) {
type = Value::ddl_none;
len = 0;
if( ddl_nullptr == in || in == end ) {
return in;
}
size_t prim_len( 0 );
for( unsigned int i = 0; i < Value::ddl_types_max; i++ ) {
prim_len = strlen( Grammar::PrimitiveTypeToken[ i ] );
if( 0 == strncmp( in, Grammar::PrimitiveTypeToken[ i ], prim_len ) ) {
type = ( Value::ValueType ) i;
break;
}
}
if( Value::ddl_none == type ) {
in = lookForNextToken( in, end );
return in;
} else {
in += prim_len;
}
bool ok( true );
if( *in == '[' ) {
ok = false;
in++;
char *start( in );
while ( in != end ) {
in++;
if( *in == ']' ) {
len = atoi( start );
ok = true;
in++;
break;
}
}
} else {
len = 1;
}
if( !ok ) {
type = Value::ddl_none;
}
return in;
}
char *OpenDDLParser::parseReference( char *in, char *end, std::vector<Name*> &names ) {
if( ddl_nullptr == in || in == end ) {
return in;
}
Name *nextName( ddl_nullptr );
in = parseName( in, end, &nextName );
if( nextName ) {
names.push_back( nextName );
}
while( ',' == *in ) {
in = getNextSeparator( in, end );
if( ',' == *in ) {
in = parseName( in, end, &nextName );
if( nextName ) {
names.push_back( nextName );
}
} else {
break;
}
}
return in;
}
char *OpenDDLParser::parseBooleanLiteral( char *in, char *end, Value **boolean ) {
*boolean = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
char *start( in );
size_t len( 0 );
while( !isSeparator( *in ) && in != end ) {
in++;
len++;
}
len++;
int res = ::strncmp( Grammar::BoolTrue, start, strlen( Grammar::BoolTrue ) );
if( 0 != res ) {
res = ::strncmp( Grammar::BoolFalse, start, strlen( Grammar::BoolFalse ) );
if( 0 != res ) {
*boolean = ddl_nullptr;
return in;
}
*boolean = ValueAllocator::allocPrimData( Value::ddl_bool );
(*boolean)->setBool( false );
} else {
*boolean = ValueAllocator::allocPrimData( Value::ddl_bool );
(*boolean)->setBool( true );
}
return in;
}
char *OpenDDLParser::parseIntegerLiteral( char *in, char *end, Value **integer, Value::ValueType integerType ) {
*integer = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
if( !isIntegerType( integerType ) ) {
return in;
}
in = lookForNextToken( in, end );
char *start( in );
while( !isSeparator( *in ) && in != end ) {
in++;
}
if( isNumeric( *start ) ) {
const int value( atoi( start ) );
*integer = ValueAllocator::allocPrimData( integerType );
switch( integerType ) {
case Value::ddl_int8:
( *integer )->setInt8( (int8) value );
break;
case Value::ddl_int16:
( *integer )->setInt16( ( int16 ) value );
break;
case Value::ddl_int32:
( *integer )->setInt32( ( int32 ) value );
break;
case Value::ddl_int64:
( *integer )->setInt64( ( int64 ) value );
break;
default:
break;
}
}
return in;
}
char *OpenDDLParser::parseFloatingLiteral( char *in, char *end, Value **floating ) {
*floating = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
char *start( in );
while( !isSeparator( *in ) && in != end ) {
in++;
}
// parse the float value
bool ok( false );
if( isNumeric( *start ) ) {
ok = true;
} else {
if( *start == '-' ) {
if( isNumeric( *(start+1) ) ) {
ok = true;
}
}
}
if( ok ) {
const float value( ( float ) atof( start ) );
*floating = ValueAllocator::allocPrimData( Value::ddl_float );
( *floating )->setFloat( value );
}
return in;
}
char *OpenDDLParser::parseStringLiteral( char *in, char *end, Value **stringData ) {
*stringData = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
size_t len( 0 );
char *start( in );
if( *start == '\"' ) {
start++;
in++;
while( *in != '\"' && in != end ) {
in++;
len++;
}
*stringData = ValueAllocator::allocPrimData( Value::ddl_string, len );
::strncpy( ( char* ) ( *stringData )->m_data, start, len );
( *stringData )->m_data[len] = '\0';
in++;
}
return in;
}
static void createPropertyWithData( Identifier *id, Value *primData, Property **prop ) {
if( ddl_nullptr != primData ) {
( *prop ) = new Property( id );
( *prop )->m_primData = primData;
}
}
char *OpenDDLParser::parseHexaLiteral( char *in, char *end, Value **data ) {
*data = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
if( *in != '0' ) {
return in;
}
in++;
if( *in != 'x' && *in != 'X' ) {
return in;
}
in++;
bool ok( true );
char *start( in );
int pos( 0 );
while( !isSeparator( *in ) && in != end ) {
if( ( *in < '0' && *in > '9' ) || ( *in < 'a' && *in > 'f' ) || ( *in < 'A' && *in > 'F' ) ) {
ok = false;
break;
}
pos++;
in++;
}
if( !ok ) {
return in;
}
int value( 0 );
while( pos > 0 ) {
int v = hex2Decimal( *start );
pos--;
value = ( value << 4 ) | v;
start++;
}
*data = ValueAllocator::allocPrimData( Value::ddl_unsigned_int64 );
if( ddl_nullptr != *data ) {
( *data )->setUnsignedInt64( value );
}
return in;
}
char *OpenDDLParser::parseProperty( char *in, char *end, Property **prop ) {
*prop = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
Identifier *id( ddl_nullptr );
in = parseIdentifier( in, end, &id );
if( ddl_nullptr != id ) {
in = lookForNextToken( in, end );
if( *in == '=' ) {
in++;
in = getNextToken( in, end );
Value *primData( ddl_nullptr );
if( isInteger( in, end ) ) {
in = parseIntegerLiteral( in, end, &primData );
createPropertyWithData( id, primData, prop );
} else if( isFloat( in, end ) ) {
in = parseFloatingLiteral( in, end, &primData );
createPropertyWithData( id, primData, prop );
} else if( isStringLiteral( *in ) ) { // string data
in = parseStringLiteral( in, end, &primData );
createPropertyWithData( id, primData, prop );
} else { // reference data
std::vector<Name*> names;
in = parseReference( in, end, names );
if( !names.empty() ) {
Reference *ref = new Reference( names.size(), &names[ 0 ] );
( *prop ) = new Property( id );
( *prop )->m_ref = ref;
}
}
}
}
return in;
}
char *OpenDDLParser::parseDataList( char *in, char *end, Value **data, size_t &numValues, Reference **refs, size_t &numRefs ) {
*data = ddl_nullptr;
numValues = numRefs = 0;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
if( *in == '{' ) {
in++;
Value *current( ddl_nullptr ), *prev( ddl_nullptr );
while( '}' != *in ) {
current = ddl_nullptr;
in = lookForNextToken( in, end );
if( isInteger( in, end ) ) {
in = parseIntegerLiteral( in, end, &current );
} else if( isFloat( in, end ) ) {
in = parseFloatingLiteral( in, end, &current );
} else if( isStringLiteral( *in ) ) {
in = parseStringLiteral( in, end, &current );
} else if( isHexLiteral( in, end ) ) {
in = parseHexaLiteral( in, end, &current );
} else { // reference data
std::vector<Name*> names;
in = parseReference( in, end, names );
if( !names.empty() ) {
Reference *ref = new Reference( names.size(), &names[ 0 ] );
*refs = ref;
numRefs = names.size();
}
}
if( ddl_nullptr != current ) {
if( ddl_nullptr == *data ) {
*data = current;
prev = current;
} else {
prev->setNext( current );
prev = current;
}
numValues++;
}
in = getNextSeparator( in, end );
if( ',' != *in && '}' != *in && !isSpace( *in ) ) {
break;
}
}
in++;
}
return in;
}
static DataArrayList *createDataArrayList( Value *currentValue, size_t numValues ) {
DataArrayList *dataList = new DataArrayList;
dataList->m_dataList = currentValue;
dataList->m_numItems = numValues;
return dataList;
}
char *OpenDDLParser::parseDataArrayList( char *in, char *end, DataArrayList **dataList ) {
*dataList = ddl_nullptr;
if( ddl_nullptr == in || in == end ) {
return in;
}
in = lookForNextToken( in, end );
if( *in == Grammar::OpenBracketToken[ 0 ] ) {
in++;
Value *currentValue( ddl_nullptr );
Reference *refs( ddl_nullptr );
DataArrayList *prev( ddl_nullptr ), *currentDataList( ddl_nullptr );
do {
size_t numRefs( 0 ), numValues( 0 );
currentValue = ddl_nullptr;
in = parseDataList( in, end, &currentValue, numValues, &refs, numRefs );
if( ddl_nullptr != currentValue ) {
if( ddl_nullptr == prev ) {
*dataList = createDataArrayList( currentValue, numValues );
prev = *dataList;
} else {
currentDataList = createDataArrayList( currentValue, numValues );
if( ddl_nullptr != prev ) {
prev->m_next = currentDataList;
prev = currentDataList;
}
}
}
} while( Grammar::CommaSeparator[ 0 ] == *in && in != end );
in = lookForNextToken( in, end );
in++;
}
return in;
}
const char *OpenDDLParser::getVersion() {
return Version;
}
END_ODDLPARSER_NS