forked from RepoMirrors/bemenu
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#ifndef size_t
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# include <stddef.h>
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#endif
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#if defined(_WIN32) || defined(_WIN64)
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# include <windows.h>
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#elif defined(__posix__) || defined(__unix__) || defined(__linux__) || defined(__APPLE__)
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# include <dlfcn.h>
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#else
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# warning "cdl: unsupported os"
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#endif
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void* chckDlLoad(const char *file, const char **outError)
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{
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assert(file);
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void *handle = NULL;
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const char *error = NULL;
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#if defined(_WIN32) || defined(_WIN64)
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#if defined(__WINRT__)
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/**
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* WinRT only publically supports LoadPackagedLibrary() for loading .dll
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* files. LoadLibrary() is a private API, and not available for apps
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* (that can be published to MS' Windows Store.)
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*/
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handle = (void*)LoadPackagedLibrary(file, 0);
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#else
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handle = (void*)LoadLibrary(file);
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#endif
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if (!handle)
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error = "Failed to load dll file.";
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#elif defined(__posix__) || defined(__unix__) || defined(__linux__) || defined(__APPLE__)
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if (!(handle = dlopen(file, RTLD_NOW | RTLD_LOCAL)))
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error = dlerror();
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#else
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error = "cdl: unsupported os";
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#endif
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if (outError)
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*outError = error;
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return handle;
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}
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void* chckDlLoadSymbol(void *handle, const char *name, const char **outError)
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{
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assert(handle);
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void *symbol = NULL;
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const char *error = NULL;
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#if defined(_WIN32) || defined(_WIN64)
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if (!(symbol = (void*)GetProcAddress((HMODULE)handle, name)))
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error = "Failed to load symbol.";
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#elif defined(__posix__) || defined(__unix__) || defined(__linux__) || defined(__APPLE__)
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if (!(symbol = dlsym(handle, name))) {
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size_t len = strlen(name) + 1;
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char *nname = calloc(1, len + 1);
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if (nname) {
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/* append an underscore for platforms that need that. */
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nname[0] = '_';
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memcpy(nname + 1, name, len);
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symbol = dlsym(handle, nname);
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free(nname);
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}
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}
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if (!symbol)
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error = dlerror();
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#else
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error = "cdl: unsupported os";
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#endif
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if (outError)
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*outError = error;
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return symbol;
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}
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void chckDlUnload(void *handle)
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{
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assert(handle);
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#if defined(_WIN32) || defined(_WIN64)
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FreeLibrary((HMODULE)handle);
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#elif defined(__posix__) || defined(__unix__) || defined(__linux__) || defined(__APPLE__)
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dlclose(handle);
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#endif
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}
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/* vim: set ts=8 sw=3 tw=0 :*/
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