Panda3D
iffGenericChunk.cxx
Go to the documentation of this file.
1 /**
2  * PANDA 3D SOFTWARE
3  * Copyright (c) Carnegie Mellon University. All rights reserved.
4  *
5  * All use of this software is subject to the terms of the revised BSD
6  * license. You should have received a copy of this license along
7  * with this source code in a file named "LICENSE."
8  *
9  * @file iffGenericChunk.cxx
10  * @author drose
11  * @date 2001-04-23
12  */
13 
14 #include "iffGenericChunk.h"
15 #include "iffInputFile.h"
16 
17 #include "indent.h"
18 
19 TypeHandle IffGenericChunk::_type_handle;
20 
21 
22 /**
23  * Reads the data of the chunk in from the given input file, if possible. The
24  * ID and length of the chunk have already been read. stop_at is the byte
25  * position of the file to stop at (based on the current position at
26  * in->get_bytes_read()). Returns true on success, false otherwise.
27  */
29 read_iff(IffInputFile *in, size_t stop_at) {
30  size_t length = stop_at - in->get_bytes_read();
31  bool result = in->read_bytes(_data, length);
32  in->align();
33  return result;
34 }
35 
36 /**
37  *
38  */
39 void IffGenericChunk::
40 write(std::ostream &out, int indent_level) const {
41  indent(out, indent_level)
42  << get_id() << " { " << _data.get_length() << " bytes }\n";
43 }
void align()
If the current file pointer is not positioned on an even-byte boundary, reads and discards one byte s...
Definition: iffInputFile.I:53
bool read_bytes(Datagram &datagram, int length)
Reads a series of bytes, and stores them in the indicated Datagram.
size_t get_bytes_read() const
Returns the number of bytes read so far from the input file.
Definition: iffInputFile.I:44
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
virtual bool read_iff(IffInputFile *in, size_t stop_at)
Reads the data of the chunk in from the given input file, if possible.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
std::ostream & indent(std::ostream &out, int indent_level)
A handy function for doing text formatting.
Definition: indent.cxx:20
A wrapper around an istream used for reading an IFF file.
Definition: iffInputFile.h:30
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
IffId get_id() const
Returns the ID associated with this chunk.
Definition: iffChunk.I:25
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
size_t get_length() const
Returns the number of bytes in the datagram.
Definition: datagram.I:335