+#ifdef ENABLE_PLUGINS
+//------------------------------------------------------------------------
+// Plugin
+//------------------------------------------------------------------------
+
+class Plugin {
+public:
+
+ static Plugin *load(char *type, char *name);
+ ~Plugin();
+
+private:
+
+#ifdef WIN32
+ Plugin(HMODULE libA);
+ HMODULE lib;
+#else
+ Plugin(void *dlA);
+ void *dl;
+#endif
+};
+
+Plugin *Plugin::load(char *type, char *name) {
+ GString *path;
+ Plugin *plugin;
+ XpdfPluginVecTable *vt;
+ XpdfBool (*xpdfInitPlugin)(void);
+#ifdef WIN32
+ HMODULE libA;
+#else
+ void *dlA;
+#endif
+
+ path = globalParams->getBaseDir();
+ appendToPath(path, "plugins");
+ appendToPath(path, type);
+ appendToPath(path, name);
+
+#ifdef WIN32
+ path->append(".dll");
+ if (!(libA = LoadLibrary(path->getCString()))) {
+ error(-1, "Failed to load plugin '%s'",
+ path->getCString());
+ goto err1;
+ }
+ if (!(vt = (XpdfPluginVecTable *)
+ GetProcAddress(libA, "xpdfPluginVecTable"))) {
+ error(-1, "Failed to find xpdfPluginVecTable in plugin '%s'",
+ path->getCString());
+ goto err2;
+ }
+#else
+ //~ need to deal with other extensions here
+ path->append(".so");
+ if (!(dlA = dlopen(path->getCString(), RTLD_NOW))) {
+ error(-1, "Failed to load plugin '%s': %s",
+ path->getCString(), dlerror());
+ goto err1;
+ }
+ if (!(vt = (XpdfPluginVecTable *)dlsym(dlA, "xpdfPluginVecTable"))) {
+ error(-1, "Failed to find xpdfPluginVecTable in plugin '%s'",
+ path->getCString());
+ goto err2;
+ }
+#endif
+
+ if (vt->version != xpdfPluginVecTable.version) {
+ error(-1, "Plugin '%s' is wrong version", path->getCString());
+ goto err2;
+ }
+ memcpy(vt, &xpdfPluginVecTable, sizeof(xpdfPluginVecTable));
+
+#ifdef WIN32
+ if (!(xpdfInitPlugin = (XpdfBool (*)(void))
+ GetProcAddress(libA, "xpdfInitPlugin"))) {
+ error(-1, "Failed to find xpdfInitPlugin in plugin '%s'",
+ path->getCString());
+ goto err2;
+ }
+#else
+ if (!(xpdfInitPlugin = (XpdfBool (*)(void))dlsym(dlA, "xpdfInitPlugin"))) {
+ error(-1, "Failed to find xpdfInitPlugin in plugin '%s'",
+ path->getCString());
+ goto err2;
+ }
+#endif
+
+ if (!(*xpdfInitPlugin)()) {
+ error(-1, "Initialization of plugin '%s' failed",
+ path->getCString());
+ goto err2;
+ }
+
+#ifdef WIN32
+ plugin = new Plugin(libA);
+#else
+ plugin = new Plugin(dlA);
+#endif
+
+ delete path;
+ return plugin;
+
+ err2:
+#ifdef WIN32
+ FreeLibrary(libA);
+#else
+ dlclose(dlA);
+#endif
+ err1:
+ delete path;
+ return NULL;
+}
+
+#ifdef WIN32
+Plugin::Plugin(HMODULE libA) {
+ lib = libA;
+}
+#else
+Plugin::Plugin(void *dlA) {
+ dl = dlA;
+}
+#endif
+
+Plugin::~Plugin() {
+ void (*xpdfFreePlugin)(void);
+
+#ifdef WIN32
+ if ((xpdfFreePlugin = (void (*)(void))
+ GetProcAddress(lib, "xpdfFreePlugin"))) {
+ (*xpdfFreePlugin)();
+ }
+ FreeLibrary(lib);
+#else
+ if ((xpdfFreePlugin = (void (*)(void))dlsym(dl, "xpdfFreePlugin"))) {
+ (*xpdfFreePlugin)();
+ }
+ dlclose(dl);
+#endif
+}
+
+#endif // ENABLE_PLUGINS
+