Travel3: Simple image and video display site

Reads the images and videos from filesystem and builds a site in
memroy.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/unique_pipe.hh b/src/unique_pipe.hh
new file mode 100644
index 0000000..7020cdf
--- /dev/null
+++ b/src/unique_pipe.hh
@@ -0,0 +1,51 @@
+#ifndef UNIQUE_PIPE_HH
+#define UNIQUE_PIPE_HH
+
+#include <cstddef>
+
+#include "unique_fd.hh"
+
+class unique_pipe {
+public:
+  explicit unique_pipe(bool non_blocking = false)
+    : unique_pipe(non_blocking, non_blocking) {}
+  unique_pipe(bool non_blocking_reader,
+              bool non_blocking_writer);
+  unique_pipe(unique_pipe&& fd) noexcept;
+  unique_pipe(std::nullptr_t) noexcept
+    : fd_{nullptr, nullptr} {}
+
+  ~unique_pipe() = default;
+
+  unique_pipe& operator=(unique_pipe&& fd) noexcept {
+    fd_[0].reset(fd.fd_[0].release());
+    fd_[1].reset(fd.fd_[1].release());
+    return *this;
+  }
+
+  unique_pipe& operator=(std::nullptr_t) noexcept {
+    reset();
+    return *this;
+  }
+
+  int reader() const noexcept { return fd_[0].get(); }
+  int writer() const noexcept { return fd_[1].get(); }
+
+  explicit operator bool() const noexcept {
+    return fd_[0] || fd_[1];
+  }
+
+  void reset();
+
+  unique_fd release_reader();
+  unique_fd release_writer();
+
+private:
+  unique_pipe(unique_pipe const&) = delete;
+  unique_pipe& operator=(unique_pipe const&) = delete;
+
+  unique_fd fd_[2];
+};
+
+
+#endif  // UNIQUE_PIPE_HH