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IfcParse: allow reading of IFC file from stdin

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IfcServer: first commit of a stdin/stdout interface to IfcGeomObjects [undocumented for now]
BIMserver_plugin: first commit of IfcEngine plugin implementation for use with http://BIMserver.org [undocumented for now]
This commit is contained in:
Thomas Krijnen
2011-08-20 09:08:56 +00:00
parent 086d314a0c
commit 0b45066736
6 changed files with 173 additions and 11 deletions
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src/ifcparse/IfcParse.cpp
+40 -7
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@@ -39,6 +39,7 @@ File::File(const std::string& fn) {
stream.seekg(0,std::ios_base::end);
size = (unsigned int) stream.tellg();
stream.seekg(0,std::ios_base::beg);
paging = size > BUF_SIZE;
buffer = new char[size < BUF_SIZE ? size : BUF_SIZE];
ptr = 0;
len = 0;
@@ -46,6 +47,18 @@ File::File(const std::string& fn) {
ReadBuffer(false);
}
File::File(std::istream& f, int l) {
eof = false;
size = l;
paging = false;
buffer = new char[size];
f.read(buffer,size);
valid = f.gcount() == size;
ptr = 0;
len = l;
offset = 0;
}
void File::Close() {
stream.close();
delete[] buffer;
@@ -71,7 +84,10 @@ void File::ReadBuffer(bool inc) {
// Seeks an arbitrary position in the file
//
void File::Seek(unsigned int o) {
if ( o >= offset && (o < (offset+len)) ) {
if ( !paging ) {
ptr = o;
eof = false;
} else if ( o >= offset && (o < (offset+len)) ) {
ptr = o - offset;
} else {
offset = o;
@@ -92,7 +108,9 @@ char File::Peek() {
// Returns the character at specified offset
//
char File::Read(unsigned int o) {
if ( o >= offset && (o < (offset+len)) ) {
if ( ! paging ) {
return buffer[o];
} else if ( o >= offset && (o < (offset+len)) ) {
return buffer[o-offset];
} else {
stream.clear();
@@ -112,7 +130,10 @@ unsigned int File::Tell() {
// Increments cursor and reads new chunk if necessary
//
void File::Inc() {
if ( ++ptr == len ) { ReadBuffer(); }
if ( ++ptr == len ) {
if ( paging ) ReadBuffer();
else eof = true;
}
}
Tokens::Tokens(IfcParse::File *f) {
@@ -433,6 +454,7 @@ void Entity::Load(std::vector<unsigned int>& ids, bool seek) {
if ( seek ) {
Ifc::file->Seek(offset);
Token datatype = Ifc::tokens->Next();
std::string dt = TokenFunc::toString(datatype);
if ( ! TokenFunc::isDatatype(datatype)) throw IfcException("Unexpected token while parsing entity");
_type = Ifc2x3::Type::FromString(TokenFunc::asString(datatype));
}
@@ -502,7 +524,13 @@ unsigned int Entity::id() { return _id; }
// Gets the unit definitins from the file
//
bool Ifc::Init(const std::string& fn) {
file = new File (fn);
return Ifc::Init(new File(fn));
}
bool Ifc::Init(std::istream& f, int len) {
return Ifc::Init(new File(f,len));
}
bool Ifc::Init(IfcParse::File* f) {
file = f;
if ( ! file->valid ) return false;
tokens = new Tokens (file);
Token token = 0;
@@ -545,9 +573,14 @@ bool Ifc::Init(const std::string& fn) {
}
if ( log1 ) std::cout << "\rDone scanning file " << std::endl;
Ifc2x3::IfcUnitAssignment::ptr unit_assignment = *EntitiesByType<Ifc2x3::IfcUnitAssignment>()->begin();
IfcUtil::IfcAbstractSelect::list units = unit_assignment->Units();
Ifc2x3::IfcUnitAssignment::list unit_assignments = EntitiesByType<Ifc2x3::IfcUnitAssignment>();
IfcUtil::IfcAbstractSelect::list units = IfcUtil::IfcAbstractSelect::list();
if ( unit_assignments->Size() ) {
Ifc2x3::IfcUnitAssignment::ptr unit_assignment = *unit_assignments->begin();
IfcUtil::IfcAbstractSelect::list units = unit_assignment->Units();
}
if ( units )
for ( IfcUtil::IfcAbstractSelect::it it = units->begin(); it != units->end(); ++ it ) {
const IfcUtil::IfcAbstractSelect::ptr base = *it;
Ifc2x3::IfcSIUnit::ptr unit = Ifc2x3::IfcSIUnit::ptr();