Support plugin resources

Copy extra resource files added to a res/ directory in the plugin source.

Makefile

@@ -1,11 +1,12 @@
 include NickelHook/NickelHook.mk
 
-PLUGIN_DIR = src/plugins
+PLUGIN_SRC_DIR     = src/plugins
+PLUGIN_DEST_DIR    = /usr/local/Kobo/plugins
 
 override PKGCONF  += Qt5Widgets
 override LIBRARY  := src/libnm.so
 override SOURCES  += src/action.c src/action_c.c src/action_cc.cc src/config.c src/generator.c src/generator_c.c src/kfmon.c src/nickelmenu.cc src/util.c
-override MOCS     += $(PLUGIN_DIR)/NPGuiInterface.h
+override MOCS     += $(PLUGIN_SRC_DIR)/NPGuiInterface.h
 override CFLAGS   += -Wall -Wextra -Werror -fvisibility=hidden
 override CXXFLAGS += -Wall -Wextra -Werror -Wno-missing-field-initializers -isystemlib -fvisibility=hidden -fvisibility-inlines-hidden
 
@@ -36,21 +37,26 @@ endif
 override CPPFLAGS += -DNM_CONFIG_DIR='"$(NM_CONFIG_DIR)"' -DNM_CONFIG_DIR_DISP='"$(patsubst /mnt/onboard/%,KOBOeReader/%,$(NM_CONFIG_DIR))"'
 
 # Find plugins
-PLUGIN_DIRS  = $(foreach dir,$(shell find $(PLUGIN_DIR) -mindepth 1 -maxdepth 1 -type d),$(notdir $(dir)))
-PLUGIN_EXPORTS := $(foreach plugin,$(PLUGIN_DIRS),$(PLUGIN_DIR)/$(plugin)/$(plugin).so:/usr/local/Kobo/plugins/$(plugin).so)
+PLUGIN_SRC_DIRS  = $(foreach dir,$(shell find $(PLUGIN_SRC_DIR) -mindepth 1 -maxdepth 1 -type d),$(notdir $(dir)))
+PLUGIN_EXPORTS := $(foreach plugin,$(PLUGIN_SRC_DIRS),$(PLUGIN_SRC_DIR)/$(plugin)/$(plugin).so:$(PLUGIN_DEST_DIR)/$(plugin).so)
 override KOBOROOT += $(PLUGIN_EXPORTS)
 
+# Find plugin extra resources
+PLUGIN_EXTRAS := $(foreach plugin,$(PLUGIN_SRC_DIRS),$(shell find $(PLUGIN_SRC_DIR)/$(plugin)/res/* -not -path '*/.*' -type f))
+PLUGIN_EXTRA_EXPORTS := $(foreach extra,$(PLUGIN_EXTRAS),$(extra):$(shell echo $(extra) | sed -e 's,^$(PLUGIN_SRC_DIR)/.*/res/,$(PLUGIN_DEST_DIR)/res/,'))
+override KOBOROOT += $(PLUGIN_EXTRA_EXPORTS)
+
 clean:
 	rm -r $(GENERATED)
-	for p in $(PLUGIN_DIRS); do $(MAKE) -C $(PLUGIN_DIR)/$$p clean; done
+	for p in $(PLUGIN_SRC_DIRS); do $(MAKE) -C $(PLUGIN_SRC_DIR)/$$p clean; done
 
 .PHONY: plugins
 
 export CPPFLAGS
 export CXXFLAGS
 export LDFLAGS
 plugins:
-	for p in $(PLUGIN_DIRS); do $(MAKE) -C $(PLUGIN_DIR)/$$p; done
+	for p in $(PLUGIN_SRC_DIRS); do $(MAKE) -C $(PLUGIN_SRC_DIR)/$$p; done
 	for f in $(PLUGIN_EXPORTS); do echo $$f; done
 
 include NickelHook/NickelHook.mk