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-rw-r--r--src/io/stream/bufferstream.cpp144
1 files changed, 144 insertions, 0 deletions
diff --git a/src/io/stream/bufferstream.cpp b/src/io/stream/bufferstream.cpp
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+// SPDX-License-Identifier: LGPL-2.1-or-later
+/**
+ * @file
+ * Phoebe DOM Implementation.
+ *
+ * This is a C++ approximation of the W3C DOM model, which follows
+ * fairly closely the specifications in the various .idl files, copies of
+ * which are provided for reference. Most important is this one:
+ *
+ * http://www.w3.org/TR/2004/REC-DOM-Level-3-Core-20040407/idl-definitions.html
+ *//*
+ * Authors:
+ * see git history
+ * Bob Jamison
+ *
+ * Copyright (C) 2018 Authors
+ * Released under GNU LGPL v2.1+, read the file 'COPYING' for more information.
+ */
+
+/**
+ * This class provided buffered endpoints for input and output.
+ */
+
+#include "bufferstream.h"
+
+namespace Inkscape
+{
+namespace IO
+{
+
+//#########################################################################
+//# B U F F E R I N P U T S T R E A M
+//#########################################################################
+/**
+ *
+ */
+BufferInputStream::BufferInputStream(
+ const std::vector<unsigned char> &sourceBuffer)
+ : buffer(sourceBuffer)
+{
+ position = 0;
+ closed = false;
+}
+
+/**
+ *
+ */
+BufferInputStream::~BufferInputStream()
+= default;
+
+/**
+ * Returns the number of bytes that can be read (or skipped over) from
+ * this input stream without blocking by the next caller of a method for
+ * this input stream.
+ */
+int BufferInputStream::available()
+{
+ if (closed)
+ return -1;
+ return buffer.size() - position;
+}
+
+
+/**
+ * Closes this input stream and releases any system resources
+ * associated with the stream.
+ */
+void BufferInputStream::close()
+{
+ closed = true;
+}
+
+/**
+ * Reads the next byte of data from the input stream. -1 if EOF
+ */
+int BufferInputStream::get()
+{
+ if (closed)
+ return -1;
+ if (position >= (int)buffer.size())
+ return -1;
+ int ch = (int) buffer[position++];
+ return ch;
+}
+
+
+
+
+//#########################################################################
+//# B U F F E R O U T P U T S T R E A M
+//#########################################################################
+
+/**
+ *
+ */
+BufferOutputStream::BufferOutputStream()
+{
+ closed = false;
+}
+
+/**
+ *
+ */
+BufferOutputStream::~BufferOutputStream()
+= default;
+
+/**
+ * Closes this output stream and releases any system resources
+ * associated with this stream.
+ */
+void BufferOutputStream::close()
+{
+ closed = true;
+}
+
+/**
+ * Flushes this output stream and forces any buffered output
+ * bytes to be written out.
+ */
+void BufferOutputStream::flush()
+{
+ //nothing to do
+}
+
+/**
+ * Writes the specified byte to this output stream.
+ */
+int BufferOutputStream::put(char ch)
+{
+ if (closed)
+ return -1;
+ buffer.push_back(ch);
+ return 1;
+}
+
+
+
+
+} //namespace IO
+} //namespace Inkscape
+
+//#########################################################################
+//# E N D O F F I L E
+//#########################################################################