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/*
* Loader for external plug-ins.
*
* Authors:
* Moritz Eberl <moritz@semiodesk.com>
*
* Copyright (C) 2016 Authors
*
* Released under GNU GPL, read the file 'COPYING' for more information
*/
#include "loader.h"
#include "system.h"
#include <exception>
#include <string.h>
#include "dependency.h"
namespace Inkscape {
namespace Extension {
typedef Implementation::Implementation *(*_getImplementation)(void);
bool Loader::load_dependency(Dependency *dep)
{
GModule *module = NULL;
module = g_module_open(dep->get_name(), (GModuleFlags)0);
if (module == NULL) {
return false;
}
return true;
}
/**
* @brief Load the actual implementation of a plugin supplied by the plugin.
* @param doc The xml representation of the INX extension configuration.
* @return The implementation of the extension loaded from the plugin.
*/
Implementation::Implementation *Loader::load_implementation(Inkscape::XML::Document *doc)
{
try {
Inkscape::XML::Node *repr = doc->root();
Inkscape::XML::Node *child_repr = repr->firstChild();
while (child_repr != NULL) {
char const *chname = child_repr->name();
if (!strncmp(chname, INKSCAPE_EXTENSION_NS_NC, strlen(INKSCAPE_EXTENSION_NS_NC))) {
chname += strlen(INKSCAPE_EXTENSION_NS);
}
if (!strcmp(chname, "dependency")) {
Dependency dep = Dependency(child_repr);
bool success = load_dependency(&dep);
if( !success ){
const char *res = g_module_error();
g_warning("Unable to load dependency %s of plugin %s.\nDetails: %s\n", dep.get_name(), res);
return NULL;
}
}
if (!strcmp(chname, "plugin")) {
if (const gchar *name = child_repr->attribute("name")) {
GModule *module = NULL;
_getImplementation GetImplementation = NULL;
gchar *path = g_build_filename(_baseDirectory, name, (char *) NULL);
module = g_module_open(path, G_MODULE_BIND_LOCAL);
g_free(path);
if (module == NULL) {
const char *res = g_module_error();
g_warning("Unable to load extension %s.\nDetails: %s\n", name, res);
return NULL;
}
if (g_module_symbol(module, "GetImplementation", (gpointer *) &GetImplementation) == FALSE) {
const char *res = g_module_error();
g_warning("Unable to load extension %s.\nDetails: %s\n", name, res);
return NULL;
}
Implementation::Implementation *i = GetImplementation();
return i;
}
}
child_repr = child_repr->next();
}
} catch (std::exception &e) {
g_warning("Unable to load extension.");
}
return NULL;
}
} // namespace Extension
} // namespace Inkscape
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace .0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim:filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99:
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