Move files to prepare for assimilation into core

[libs/core.git] / source / buffered.cpp

diff --git a/source/buffered.cpp b/source/buffered.cpp
deleted file mode 100644 (file)
index f53d2fc..0000000
--- a/source/buffered.cpp
+++ /dev/null
@@ -1,188 +0,0 @@
-#include <cstring>
-#include "buffered.h"
-#include "except.h"
-
-using namespace std;
-
-namespace Msp {
-namespace IO {
-
-Buffered::Buffered(Base &b, unsigned s):
-       below(b),
-       buf_size(s),
-       buf(new char[buf_size]),
-       begin(buf),
-       end(buf),
-       cur_op(M_NONE)
-{
-       mode = below.get_mode();
-       below.signal_flush_required.connect(sigc::mem_fun(this, &Buffered::flush));
-}
-
-Buffered::~Buffered()
-{
-       try
-       {
-               flush();
-       }
-       catch(...)
-       { }
-
-       delete[] buf;
-}
-
-void Buffered::flush()
-{
-       if(cur_op==M_WRITE)
-       {
-               unsigned used = end-begin;
-               if(used)
-               {
-                       unsigned len = below.write(begin, used);
-
-                       begin=end = buf;
-
-                       if(len<used)
-                               throw Exception("Couldn't flush all data");
-               }
-       }
-       else if(cur_op==M_READ)
-               begin=end = buf;
-}
-
-unsigned Buffered::do_write(const char *data, unsigned size)
-{
-       set_op(M_WRITE);
-
-       if(end+size<buf+buf_size)
-       {
-               // All data fits in buffer with whatever is already there
-               memcpy(end, data, size);
-               end += size;
-
-               return size;
-       }
-       else
-       {
-               // Clear the buffer to make more room
-               flush();
-
-               if(size<buf_size)
-               {
-                       // Put new data in the buffer to wait for more
-                       memcpy(end, data, size);
-                       end += size;
-
-                       return size;
-               }
-               else
-                       // New data still doesn't fit in the buffer, so write it directly
-                       return below.write(data, size);
-       }
-}
-
-unsigned Buffered::do_read(char *data, unsigned size)
-{
-       set_op(M_READ);
-
-       if(begin+size<=end)
-       {
-               // The request can be served from the buffer
-               memcpy(data, begin, size);
-               begin += size;
-
-               eof_flag = (below.eof() && begin==end);
-
-               return size;
-       }
-       else
-       {
-               // Give out whatever is in the buffer already
-               memcpy(data, begin, end-begin);
-               unsigned ret = end-begin;
-               begin=end = buf;
-
-               data += ret;
-               size -= ret;
-
-               if(size<buf_size)
-               {
-                       // Fill the buffer and serve the rest of the request from it
-                       unsigned len = below.read(end, buf+buf_size-end);
-                       end += len;
-
-                       len = min(static_cast<unsigned>(end-begin), size);
-                       memcpy(data, begin, len);
-                       begin += len;
-                       ret += len;
-               }
-               else
-                       // Read the rest directly from the underlying object
-                       ret += below.read(data, size);
-
-               eof_flag = (below.eof() && begin==end);
-
-               return ret;
-       }
-}
-
-unsigned Buffered::put(char c)
-{
-       set_op(M_WRITE);
-
-       if(end<buf+buf_size)
-       {
-               *end++ = c;
-               return 1;
-       }
-       else
-               return do_write(&c, 1);
-}
-
-bool Buffered::getline(std::string &line)
-{
-       set_op(M_READ);
-
-       for(char *i=begin; i!=end; ++i)
-               if(*i=='\n')
-               {
-                       line.assign(begin, i-begin);
-                       begin = i+1;
-                       return true;
-               }
-
-       return Base::getline(line);
-}
-
-int Buffered::get()
-{
-       set_op(M_READ);
-
-       if(begin<end)
-               return static_cast<unsigned char>(*begin++);
-
-       char c;
-       if(do_read(&c, 1)==0)
-               return -1;
-       return static_cast<unsigned char>(c);
-}
-
-void Buffered::set_op(Mode op)
-{
-       if(op!=cur_op)
-               flush();
-       cur_op = op;
-}
-
-unsigned Buffered::get_current_size() const
-{
-       return end-begin;
-}
-
-Handle Buffered::get_event_handle()
-{
-       throw Exception("Buffered doesn't support events");
-}
-
-} // namespace IO
-} // namespace Msp