Add examples of library usage

samples/cmake/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.0)
+set(CMAKE_TOOLCHAIN_FILE "$ENV{DEVKITPRO}/wut/share/wut.toolchain.cmake")
+
+project(romfs-helloworld C)
+include("${DEVKITPRO}/wut/share/wut.cmake" REQUIRED)
+include("${DEVKITPRO}/portlibs/wiiu/share/romfs-wiiu.cmake" REQUIRED)
+
+# add source files
+add_executable(romfs-helloworld
+	helloworld.c)
+
+# create and add romfs from "romfs" directory
+romfs_add(romfs-helloworld "romfs")
+
+# link requireed libraries
+target_link_libraries(romfs-helloworld
+	whb
+	coreinit
+	proc_ui
+	sysapp)
+
+# build an rpx
+wut_create_rpx(romfs-helloworld.rpx romfs-helloworld)

samples/cmake/helloworld.c

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+#include <coreinit/thread.h>
+#include <coreinit/time.h>
+#include <whb/proc.h>
+#include <whb/log.h>
+#include <whb/log_console.h>
+#include <romfs-wiiu.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	char line[128];
+
+	// initialize procui/console
+	WHBProcInit();
+	WHBLogConsoleInit();
+
+	// initialize romfs library
+	int res = romfsInit();
+	if (res) {
+		WHBLogPrintf(">> Failed to init romfs: %d", res);
+		goto end;
+	}
+
+	// open helloworld.txt
+	FILE *fp = fopen("romfs:/helloworld.txt", "r");
+	if (fp == NULL) {
+		WHBLogPrint(">> Failed to open file");
+		goto end;
+	}
+
+	WHBLogPrint(">> Content of romfs:/helloworld.txt:");
+
+	// output content to console
+	while (fgets(line, sizeof(line), fp) != NULL)
+		WHBLogPrint(line);
+
+	// cleanup
+	fclose(fp);
+
+end:
+	WHBLogPrint(">> Done. Press Home to exit");
+
+	// draw the contents of console to screen
+	WHBLogConsoleDraw();
+
+	// wait for the user to exit
+	while(WHBProcIsRunning())
+		OSSleepTicks(OSMillisecondsToTicks(100));
+
+	// deinitialize romfs library
+	romfsExit();
+
+	// deinitialize procui/console
+	WHBLogConsoleFree();
+	WHBProcShutdown();
+
+	return 0;
+} 

samples/cmake/romfs/helloworld.txt

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+Hello world!
+This is an example romfs file

samples/make/Makefile

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+#-------------------------------------------------------------------------------
+.SUFFIXES:
+#-------------------------------------------------------------------------------
+
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+endif
+
+TOPDIR ?= $(CURDIR)
+
+include $(DEVKITPRO)/wut/share/wut_rules
+
+#-------------------------------------------------------------------------------
+# TARGET is the name of the output
+# BUILD is the directory where object files & intermediate files will be placed
+# SOURCES is a list of directories containing source code
+# DATA is a list of directories containing data files
+# INCLUDES is a list of directories containing header files
+# ROMFS is a folder to generate app's romfs
+#-------------------------------------------------------------------------------
+TARGET		:=	romfs-helloworld
+BUILD		:=	build
+SOURCES		:=	source
+INCLUDES	:=	include
+ROMFS		:=	romfs
+
+#-------------------------------------------------------------------------------
+# options for code generation
+#-------------------------------------------------------------------------------
+CFLAGS		:=	-g -Wall -O2 -ffunction-sections \
+			$(MACHDEP)
+
+CFLAGS		+=	$(INCLUDE) -D__WIIU__ -D__WUT__
+
+CXXFLAGS	:=	$(CFLAGS)
+
+ASFLAGS		:=	-g $(MACHDEP)
+LDFLAGS		:=	-g $(MACHDEP) $(RPXSPECS) -Wl,-Map,$(notdir $*.map)
+
+LIBS		:=	-lwut
+
+#-------------------------------------------------------------------------------
+# list of directories containing libraries, this must be the top level
+# containing include and lib
+#-------------------------------------------------------------------------------
+LIBDIRS		:=	$(PORTLIBS) $(WUT_ROOT)
+
+
+#-------------------------------------------------------------------------------
+# no real need to edit anything past this point unless you need to add additional
+# rules for different file extensions
+#-------------------------------------------------------------------------------
+ifneq ($(BUILD),$(notdir $(CURDIR)))
+#-------------------------------------------------------------------------------
+
+export OUTPUT	:=	$(CURDIR)/$(TARGET)
+export TOPDIR	:=	$(CURDIR)
+
+export VPATH	:=	$(foreach dir,$(SOURCES),$(CURDIR)/$(dir))
+export DEPSDIR	:=	$(CURDIR)/$(BUILD)
+
+CFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.c)))
+CPPFILES	:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.cpp)))
+SFILES		:=	$(foreach dir,$(SOURCES),$(notdir $(wildcard $(dir)/*.s)))
+
+#-------------------------------------------------------------------------------
+# use CXX for linking C++ projects, CC for standard C
+#-------------------------------------------------------------------------------
+ifeq ($(strip $(CPPFILES)),)
+#-------------------------------------------------------------------------------
+	export LD	:=	$(CC)
+#-------------------------------------------------------------------------------
+else
+#-------------------------------------------------------------------------------
+	export LD	:=	$(CXX)
+#-------------------------------------------------------------------------------
+endif
+#-------------------------------------------------------------------------------
+
+export SRCFILES		:=	$(CPPFILES) $(CFILES) $(SFILES)
+export OFILES 		:=	$(CPPFILES:.cpp=.o) $(CFILES:.c=.o) $(SFILES:.s=.o)
+
+export INCLUDE		:=	$(foreach dir,$(INCLUDES),-I$(CURDIR)/$(dir)) \
+				$(foreach dir,$(LIBDIRS),-I$(dir)/include) \
+				-I$(CURDIR)/$(BUILD)
+
+export LIBPATHS		:=	$(foreach dir,$(LIBDIRS),-L$(dir)/lib)
+
+.PHONY: $(BUILD) clean all
+
+#-------------------------------------------------------------------------------
+all: $(BUILD)
+
+$(BUILD): $(SRCFILES)
+	@[ -d $@ ] || mkdir -p $@
+	@$(MAKE) --no-print-directory -C $(BUILD) -f $(CURDIR)/Makefile
+
+#-------------------------------------------------------------------------------
+clean:
+	@echo clean ...
+	@rm -fr $(BUILD) $(TARGET).rpx $(TARGET).elf
+
+#-------------------------------------------------------------------------------
+else
+.PHONY:	all
+
+#-------------------------------------------------------------------------------
+# romfs
+#-------------------------------------------------------------------------------
+include $(PORTLIBS_PATH)/wiiu/share/romfs-wiiu.mk
+CFLAGS		+=	$(ROMFS_CFLAGS)
+CXXFLAGS	+=	$(ROMFS_CFLAGS)
+LIBS		+=	$(ROMFS_LIBS)
+OFILES		+=	$(ROMFS_TARGET)
+#-------------------------------------------------------------------------------
+
+DEPENDS		:=	$(OFILES:.o=.d)
+
+#-------------------------------------------------------------------------------
+# main targets
+#-------------------------------------------------------------------------------
+all		:	$(OUTPUT).rpx
+
+$(OUTPUT).rpx	:	$(OUTPUT).elf
+
+$(OUTPUT).elf	:	$(OFILES)
+
+-include $(DEPENDS)
+
+#-------------------------------------------------------------------------------
+endif
+#------------------------------------------------------------------------------- 

samples/make/romfs/helloworld.txt

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+Hello world!
+This is an example romfs file

samples/make/source/helloworld.c

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+#include <coreinit/thread.h>
+#include <coreinit/time.h>
+#include <whb/proc.h>
+#include <whb/log.h>
+#include <whb/log_console.h>
+#include <romfs-wiiu.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+	char line[128];
+
+	// initialize procui/console
+	WHBProcInit();
+	WHBLogConsoleInit();
+
+	// initialize romfs library
+	int res = romfsInit();
+	if (res) {
+		WHBLogPrintf(">> Failed to init romfs: %d", res);
+		goto end;
+	}
+
+	// open helloworld.txt
+	FILE *fp = fopen("romfs:/helloworld.txt", "r");
+	if (fp == NULL) {
+		WHBLogPrint(">> Failed to open file");
+		goto end;
+	}
+
+	WHBLogPrint(">> Content of romfs:/helloworld.txt:");
+
+	// output content to console
+	while (fgets(line, sizeof(line), fp) != NULL)
+		WHBLogPrint(line);
+
+	// cleanup
+	fclose(fp);
+
+end:
+	WHBLogPrint(">> Done. Press Home to exit");
+
+	// draw the contents of console to screen
+	WHBLogConsoleDraw();
+
+	// wait for the user to exit
+	while(WHBProcIsRunning())
+		OSSleepTicks(OSMillisecondsToTicks(100));
+
+	// deinitialize romfs library
+	romfsExit();
+
+	// deinitialize procui/console
+	WHBLogConsoleFree();
+	WHBProcShutdown();
+
+	return 0;
+}