X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=src%2Fstlplus%2Fportability%2Fdynaload.hpp;fp=src%2Fstlplus%2Fportability%2Fdynaload.hpp;h=dafaf243ee6dc66ae8cbc6e38c33671049fb8196;hb=6b0a0d0efafe34d48ab344fca3b479553bd4e62c;hp=0000000000000000000000000000000000000000;hpb=85783316365181491a3e3c0c63659972477cebba;p=chaz%2Fyoink

diff --git a/src/stlplus/portability/dynaload.hpp b/src/stlplus/portability/dynaload.hpp
new file mode 100644
index 0000000..dafaf24
--- /dev/null
+++ b/src/stlplus/portability/dynaload.hpp
@@ -0,0 +1,86 @@
+#ifndef STLPLUS_DYNALOAD
+#define STLPLUS_DYNALOAD
+////////////////////////////////////////////////////////////////////////////////
+
+//   Author:    Andy Rushton
+//   Copyright: (c) Southampton University 1999-2004
+//              (c) Andy Rushton           2004-2009
+//   License:   BSD License, see ../docs/license.html
+
+//   A portable interface to the dynamic loader - i.e. the system for loading
+//   dynamic libraries or shared libraries during the running of a program,
+//   rather than by linking
+
+////////////////////////////////////////////////////////////////////////////////
+#include "portability_fixes.hpp"
+#include <string>
+
+namespace stlplus
+{
+
+  //////////////////////////////////////////////////////////////////////////////
+  // dynaload class manages a dynamic loadable library and unloads it on destruction
+
+  class dynaload
+  {
+  public:
+
+    ////////////////////////////////////////////////////////////////////////////
+    // library management
+
+    // construct the object but do not load
+    dynaload(void);
+
+    // construct and load
+    dynaload(const std::string& library);
+
+    // destroy and unload if loaded
+    ~dynaload(void);
+
+    // load the library - return success or fail
+    bool load(const std::string& library);
+
+    // unload the library if loaded
+    bool unload(void);
+
+    // test whether the library is loaded
+    bool loaded(void) const;
+
+    ////////////////////////////////////////////////////////////////////////////
+    // symbol management
+
+    // test whether a function is exported by the library
+    bool present(const std::string& name);
+
+    // get the function as a generic pointer
+    void* symbol(const std::string& name);
+
+    ////////////////////////////////////////////////////////////////////////////
+    // error management
+
+    // enum values to indicate type of error
+    enum error_t {no_error, load_error, unload_error, symbol_error};
+
+    // test whether there has been an error
+    bool error(void) const;
+
+    // clear an error once it has been handled (or ignored)
+    void clear_error(void);
+
+    // get the type of the error as indicated by the enum error_t
+    error_t error_type(void) const;
+
+    // get the text of the error as provided by the OS
+    std::string error_text(void) const;
+
+    ////////////////////////////////////////////////////////////////////////////
+
+  private:
+    void* m_handle;
+    error_t m_error;
+    std::string m_text;
+  };
+
+}
+
+#endif