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authorKaren Arutyunov <karen@codesynthesis.com>2020-03-18 22:17:49 +0300
committerKaren Arutyunov <karen@codesynthesis.com>2020-03-27 17:28:44 +0300
commit35359f038f571dc46de3d14af72a2bc911fb0a24 (patch)
treede3e89d678e78b9efc4d395274fd7ccc68f4a213 /web/apache/stream.hxx
parent8ad672cc7211952716ffe1fbf76c179b4f1149e3 (diff)
Implement brep-monitor
Diffstat (limited to 'web/apache/stream.hxx')
-rw-r--r--web/apache/stream.hxx148
1 files changed, 0 insertions, 148 deletions
diff --git a/web/apache/stream.hxx b/web/apache/stream.hxx
deleted file mode 100644
index ed0018e..0000000
--- a/web/apache/stream.hxx
+++ /dev/null
@@ -1,148 +0,0 @@
-// file : web/apache/stream.hxx -*- C++ -*-
-// license : MIT; see accompanying LICENSE file
-
-#ifndef WEB_APACHE_STREAM_HXX
-#define WEB_APACHE_STREAM_HXX
-
-#include <httpd.h> // request_rec, HTTP_*
-#include <http_protocol.h> // ap_*()
-
-#include <ios> // streamsize
-#include <vector>
-#include <cstring> // memmove(), size_t
-#include <streambuf>
-#include <algorithm> // min(), max()
-
-#include <web/module.hxx> // invalid_request
-
-namespace web
-{
- namespace apache
- {
- // Object of a class implementing this interface is intended for keeping
- // the state of communication with the client.
- //
- struct stream_state
- {
- // Called by istreambuf functions when content is about to be read from
- // the client. Can throw invalid_request or sequence_error.
- //
- virtual void
- set_read_state () = 0;
-
- // Called by ostreambuf functions when some content is about to be
- // written to the client. Can throw invalid_request or sequence_error.
- //
- virtual void
- set_write_state () = 0;
- };
-
- // Base class for ostreambuf and istreambuf. References request and
- // communication state structures.
- //
- class rbuf: public std::streambuf
- {
- protected:
- rbuf (request_rec* r, stream_state& s): rec_ (r), state_ (s) {}
-
- protected:
- request_rec* rec_;
- stream_state& state_;
- };
-
- class ostreambuf: public rbuf
- {
- public:
- ostreambuf (request_rec* r, stream_state& s): rbuf (r, s) {}
-
- private:
- virtual int_type
- overflow (int_type c)
- {
- if (c != traits_type::eof ())
- {
- state_.set_write_state ();
-
- char chr (c);
-
- // Throwing allows to distinguish comm failure from other IO error
- // conditions.
- //
- if (ap_rwrite (&chr, sizeof (chr), rec_) == -1)
- throw invalid_request (HTTP_REQUEST_TIME_OUT);
- }
-
- return c;
- }
-
- virtual std::streamsize
- xsputn (const char* s, std::streamsize num)
- {
- state_.set_write_state ();
-
- if (ap_rwrite (s, num, rec_) < 0)
- throw invalid_request (HTTP_REQUEST_TIME_OUT);
-
- return num;
- }
-
- virtual int
- sync ()
- {
- if (ap_rflush (rec_) < 0)
- throw invalid_request (HTTP_REQUEST_TIME_OUT);
-
- return 0;
- }
- };
-
- class istreambuf: public rbuf
- {
- public:
- istreambuf (request_rec* r,
- stream_state& s,
- size_t bufsize = 1024,
- size_t putback = 1)
- : rbuf (r, s),
- bufsize_ (std::max (bufsize, (size_t)1)),
- putback_ (std::min (putback, bufsize_ - 1)),
- buf_ (bufsize_)
- {
- char* p (buf_.data () + putback_);
- setg (p, p, p);
- }
-
- protected:
- virtual int_type
- underflow ()
- {
- if (gptr () < egptr ())
- return traits_type::to_int_type (*gptr ());
-
- state_.set_read_state ();
-
- size_t pb (std::min ((size_t)(gptr () - eback ()), putback_));
- std::memmove (buf_.data () + putback_ - pb, gptr () - pb, pb);
-
- char* p (buf_.data () + putback_);
- int rb (ap_get_client_block (rec_, p, bufsize_ - putback_));
-
- if (rb == 0)
- return traits_type::eof ();
-
- if (rb < 0)
- throw invalid_request (HTTP_REQUEST_TIME_OUT);
-
- setg (p - pb, p, p + rb);
- return traits_type::to_int_type (*gptr ());
- }
-
- protected:
- size_t bufsize_;
- size_t putback_;
- std::vector<char> buf_;
- };
- }
-}
-
-#endif // WEB_APACHE_STREAM_HXX