diff options
Diffstat (limited to 'src/extension/loader.cpp')
| -rw-r--r-- | src/extension/loader.cpp | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/src/extension/loader.cpp b/src/extension/loader.cpp index 8893f3f1d..32ac4b3b4 100644 --- a/src/extension/loader.cpp +++ b/src/extension/loader.cpp @@ -14,11 +14,13 @@ #include <exception> #include <string.h> #include "dependency.h" +#include "inkscape-version.h" namespace Inkscape { namespace Extension { typedef Implementation::Implementation *(*_getImplementation)(void); +typedef const gchar *(*_getInkscapeVersion)(void); bool Loader::load_dependency(Dependency *dep) { @@ -38,43 +40,75 @@ bool Loader::load_dependency(Dependency *dep) Implementation::Implementation *Loader::load_implementation(Inkscape::XML::Document *doc) { try { + Inkscape::XML::Node *repr = doc->root(); Inkscape::XML::Node *child_repr = repr->firstChild(); + + // Iterate over the xml content 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); } - + + // Deal with dependencies if we have them if (!strcmp(chname, "dependency")) { Dependency dep = Dependency(child_repr); + // try to load it bool success = load_dependency(&dep); if( !success ){ + // Could not load dependency, we abort 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; } } + // Found a plugin to load if (!strcmp(chname, "plugin")) { + + // The name of the plugin is actually the library file we want to load if (const gchar *name = child_repr->attribute("name")) { GModule *module = NULL; _getImplementation GetImplementation = NULL; + _getInkscapeVersion GetInkscapeVersion = NULL; + + // build the path where to look for the plugin gchar *path = g_build_filename(_baseDirectory, name, (char *) NULL); module = g_module_open(path, G_MODULE_BIND_LOCAL); g_free(path); + if (module == NULL) { + // we were not able to load the plugin, write warning and abort const char *res = g_module_error(); g_warning("Unable to load extension %s.\nDetails: %s\n", name, res); return NULL; } + // Get a handle to the version function of the module + if (g_module_symbol(module, "GetInkscapeVersion", (gpointer *) &GetInkscapeVersion) == FALSE) { + // This didn't work, write warning and abort + const char *res = g_module_error(); + g_warning("Unable to load extension %s.\nDetails: %s\n", name, res); + return NULL; + } + + // Get a handle to the function that delivers the implementation if (g_module_symbol(module, "GetImplementation", (gpointer *) &GetImplementation) == FALSE) { + // This didn't work, write warning and abort const char *res = g_module_error(); g_warning("Unable to load extension %s.\nDetails: %s\n", name, res); return NULL; } - + + // Get version and test against this version + const gchar* version = GetInkscapeVersion(); + if( strcmp(version, version_string) != 0) { + // The versions are different, display warning. + g_warning("Plugin was built against Inkscape version %s, this is %s. The plugin might not be compatible.", version, version_string); + } + + Implementation::Implementation *i = GetImplementation(); return i; } |