SH-3177 Add streambuf/iostream adapters to BufferArray object.

Initial version that should have enough of the plumbing to produce
a working adapter.  Memory test is showing 8 bytes held after one
of the tests so I'm going to revisit that later.  But basic
functionality is there going by the unit tests.

1 files changed, 14 insertions, 0 deletions

diff --git a/indra/llcorehttp/bufferarray.cpp b/indra/llcorehttp/bufferarray.cpp
index 5eaa60c9ba..5eb8f84c34 100644
--- a/indra/llcorehttp/bufferarray.cpp
+++ b/indra/llcorehttp/bufferarray.cpp
@@ -288,6 +288,20 @@ int BufferArray::findBlock(size_t pos, size_t * ret_offset)
 }
 
 
+bool BufferArray::getBlockStartEnd(int block, const char ** start, const char ** end)
+{
+	if (block < 0 || block >= mBlocks.size())
+	{
+		return false;
+	}
+
+	const Block & b(*mBlocks[block]);
+	*start = &b.mData[0];
+	*end = &b.mData[b.mUsed];
+	return true;
+}
+
+
 // ==================================
 // BufferArray::Block Definitions
 // ==================================