add benchmark (issue #12)

bench/Makefile

@@ -0,0 +1,33 @@
+CURL=curl
+
+CC = cc
+CFLAGS = -O2 -std=c99 -pedantic -Wall
+
+all: bench
+
+LIBMOJIBAKE = ../libmojibake.a
+
+bench: bench.o util.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ bench.o util.o $(LIBMOJIBAKE)
+
+DATAURL = https://raw.githubusercontent.com/duerst/eprun/master/benchmark
+DATAFILES = Deutsch_.txt Japanese_.txt Korean_.txt Vietnamese_.txt
+
+$(DATAFILES):
+	$(CURL) -O $(DATAURL)/$@
+
+bench.out: $(DATAFILES) bench
+	./bench -nfkc $(DATAFILES) > $@
+
+# you may need make CPPFLAGS=... LDFLAGS=... to help it find ICU
+icu: icu.o util.o
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ icu.o util.o -licuuc
+
+icu.out: $(DATAFILES) icu
+	./icu $(DATAFILES) > $@
+
+.c.o:
+	$(CC) $(CPPFLAGS) -I.. $(CFLAGS) -c -o $@ $<
+
+clean:
+	rm -rf *.o *.txt bench *.out icu