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stringStream.I
00001 // Filename: stringStream.I
00002 // Created by:  drose (03Jul07)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 
00016 ////////////////////////////////////////////////////////////////////
00017 //     Function: StringStream::Constructor
00018 //       Access: Published
00019 //  Description: 
00020 ////////////////////////////////////////////////////////////////////
00021 INLINE StringStream::
00022 StringStream() : iostream(&_buf) {
00023 }
00024 
00025 ////////////////////////////////////////////////////////////////////
00026 //     Function: StringStream::Constructor
00027 //       Access: Published
00028 //  Description: This version of the constructor preloads the buffer
00029 //               with the indicated data.
00030 ////////////////////////////////////////////////////////////////////
00031 INLINE StringStream::
00032 StringStream(const string &source) : iostream(&_buf) {
00033   set_data(source);
00034 }
00035 
00036 ////////////////////////////////////////////////////////////////////
00037 //     Function: StringStream::clear_data
00038 //       Access: Published
00039 //  Description: Empties the buffer.
00040 ////////////////////////////////////////////////////////////////////
00041 INLINE void StringStream::
00042 clear_data() {
00043   _buf.clear();
00044 }
00045 
00046 ////////////////////////////////////////////////////////////////////
00047 //     Function: StringStream::get_data_size
00048 //       Access: Published
00049 //  Description: Returns the number of characters available to be read
00050 //               from the data stream.
00051 ////////////////////////////////////////////////////////////////////
00052 INLINE size_t StringStream::
00053 get_data_size() {
00054   flush();
00055   return _buf.get_data().size();
00056 }
00057 
00058 ////////////////////////////////////////////////////////////////////
00059 //     Function: StringStream::get_data
00060 //       Access: Published
00061 //  Description: Returns the contents of the data stream as a string.
00062 ////////////////////////////////////////////////////////////////////
00063 INLINE string StringStream::
00064 get_data() {
00065   flush();
00066   const pvector<unsigned char> &data = _buf.get_data();
00067   if (!data.empty()) {
00068     return string((char *)&data[0], data.size());
00069   }
00070   return string();
00071 }
00072 
00073 ////////////////////////////////////////////////////////////////////
00074 //     Function: StringStream::set_data
00075 //       Access: Published
00076 //  Description: Replaces the contents of the data stream.  This
00077 //               implicitly reseeks to 0.
00078 ////////////////////////////////////////////////////////////////////
00079 INLINE void StringStream::
00080 set_data(const string &data) {
00081   _buf.clear();
00082   if (!data.empty()) {
00083     pvector<unsigned char> pv;
00084     pv.insert(pv.end(), (const unsigned char *)&data[0], (const unsigned char *)&data[0] + data.size());
00085     _buf.swap_data(pv);
00086   }
00087 }
00088 
00089 ////////////////////////////////////////////////////////////////////
00090 //     Function: StringStream::swap_data
00091 //       Access: Published
00092 //  Description: Swaps the indicated buffer for the contents of the
00093 //               internal buffer.
00094 ////////////////////////////////////////////////////////////////////
00095 INLINE void StringStream::
00096 swap_data(pvector<unsigned char> &data) {
00097   flush();
00098   _buf.swap_data(data);
00099 }
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