plibsys/src/plibraryloader-win.c at master · wizardst/plibsys · GitHub

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* The MIT License

* Permission is hereby granted, free of charge, to any person obtaining

* a copy of this software and associated documentation files (the

* 'Software'), to deal in the Software without restriction, including

* without limitation the rights to use, copy, modify, merge, publish,

* distribute, sublicense, and/or sell copies of the Software, and to

* permit persons to whom the Software is furnished to do so, subject to

* the following conditions:

* The above copyright notice and this permission notice shall be

* included in all copies or substantial portions of the Software.

* THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#include "perror.h"

#include "pfile.h"

#include "plibraryloader.h"

#include "pmem.h"

#include "pstring.h"

typedef HINSTANCE plibrary_handle;

struct PLibraryLoader_ {

plibrary_handle handle;

};

static void pp_library_loader_clean_handle (plibrary_handle handle);

static void

pp_library_loader_clean_handle (plibrary_handle handle)

{

if (P_UNLIKELY (!FreeLibrary (handle)))

P_ERROR ("PLibraryLoader::pp_library_loader_clean_handle: FreeLibrary() failed");

}

P_LIB_API PLibraryLoader *

p_library_loader_new (const pchar *path)

{

PLibraryLoader *loader = NULL;

plibrary_handle handle;

if (!p_file_is_exists (path))

return NULL;

if (P_UNLIKELY ((handle = LoadLibraryA (path)) == NULL)) {

P_ERROR ("PLibraryLoader::p_library_loader_new: LoadLibraryA() failed");

return NULL;

}

if (P_UNLIKELY ((loader = p_malloc0 (sizeof (PLibraryLoader))) == NULL)) {

P_ERROR ("PLibraryLoader::p_library_loader_new: failed to allocate memory");

pp_library_loader_clean_handle (handle);

return NULL;

}

loader->handle = handle;

return loader;

}

P_LIB_API PFuncAddr

p_library_loader_get_symbol (PLibraryLoader *loader, const pchar *sym)

{

PFuncAddr ret_sym = NULL;

if (P_UNLIKELY (loader == NULL || sym == NULL || loader->handle == NULL))

return NULL;

ret_sym = (PFuncAddr) GetProcAddress (loader->handle, sym);

return ret_sym;

}

P_LIB_API void

p_library_loader_free (PLibraryLoader *loader)

{

if (P_UNLIKELY (loader == NULL))

return;

pp_library_loader_clean_handle (loader->handle);

p_free (loader);

}

P_LIB_API pchar *

p_library_loader_get_last_error (PLibraryLoader *loader)

{

pchar *res = NULL;

DWORD err_code;

LPVOID msg_buf;

P_UNUSED (loader);

err_code = p_error_get_last_system ();

if (err_code == 0)

return NULL;

if (P_LIKELY (FormatMessageA (FORMAT_MESSAGE_ALLOCATE_BUFFER |

FORMAT_MESSAGE_FROM_SYSTEM |

FORMAT_MESSAGE_IGNORE_INSERTS,

NULL,

err_code,

MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),

(LPSTR) &msg_buf,

NULL) != 0)) {

res = p_strdup ((pchar *) msg_buf);

LocalFree (msg_buf);

}

return res;

}

P_LIB_API pboolean

p_library_loader_is_ref_counted (void)

{

return TRUE;

}

void

p_library_loader_init (void)

{

}

void

p_library_loader_shutdown (void)

{

}

plibsys/src/plibraryloader-win.c at master · wizardst/plibsys · GitHub

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