fix most compiler errors

Makefile

@@ -9,8 +9,16 @@ clean:
 
 bin:
 	mkdir -p bin
+build:
+	mkdir -p build
 
-bin/blang: bin src/*.c
-	$(CC) $(CFLAGS) -o $@ src/*.c
+build/blang.o: build src/blang.c src/blang.h
+	$(CC) -c -o $@ src/blang.c
+
+build/ops.o: build src/blang.h src/ops.c src/ops.h
+	$(CC) -c -o $@ src/ops.c
+
+bin/blang: bin build/blang.o build/ops.o
+	$(CC) $(CFLAGS) -o $@ build/*.o
 
 .PHONY: all clean

src/blang.c

@@ -1,42 +1,24 @@
 #include <stdio.h>
 #include <stdlib.h>
 
-static unsigned char get = 0;
-static unsigned char _stack[4];
-static unsigned char *stack = _stack;
-static unsigned char *state;
+#include "blang.h"
+#include "ops.h"
 
-int main(){
+int main(int argc, char **argv){
+	struct State s;
 	int c;
-	while((c = getchar()) != EOF){
-		if(stack == (unsigned char *)0)
-			return (char)state;
-		if(get){
-			state = (char *)c;
-			get = 0;
+	void (*op)(struct State *);
+
+	s.chart = *argv;
+
+	while((c = getc(stdin)) != EOF){
+		/* proper exit is ^* */
+		if(s.chart == (char *)0)
+			return (int)s.hand;
+		if((op = Ops_lookup(c)) == NULL)
 			continue;
+		else
+			op(&s);
 	}
-		switch(c){
-	case ' ':
-	case '\n':
-	case '\r':
-	case '\t':
-	case '\v':
-		break;
-	case '!': state = stack; break;
-	case '$': stack = state; state = (char *)*_stack; break;
-	case '%': *stack = (char)state; break;
-	case '^': state = (char *)0; break;
-	case '+': ++state; break;
-	case '-': --state; break;
-	case '>': putchar((char)state); break;
-	case '<': get = 1; break;
-	case ':':
-		  while((c = getchar()) != '\n')
-			  if(c == EOF)
-				  goto fin;
-		  break;
-		}
-	}
-fin:	return 1;
+	return 1;
 }

src/blang.h

@@ -0,0 +1,7 @@
+#if !defined _BLANG_H
+#	define _BLANG_H
+struct State{
+	unsigned char hand;
+	char *chart;
+}
+#endif

src/ops.c

@@ -8,36 +8,36 @@ void Ops_bang(struct State *s){
 	return;
 }
 
-void Ops_dollar(struct State *s){
-	s->chart = (char *)0;
-}
-
 void Ops_percent(struct State *s){
 	*(s->chart) = s->hand;
 }
 
 void Ops_carat(struct State *s){
-	s->state = 0;
+	s->hand = 0;
 }
 
 void Ops_ampersand(struct State *s){
 	s->hand = s->chart;
 }
 
+void Ops_splat(struct State *s){
+	s->chart = s->hand;
+}
+
 void Ops_plus(struct State *s){
-	++(s->state);
+	++(s->hand);
 }
 
 void Ops_dash(struct State *s){
-	--(s->state);
+	--(s->hand);
 }
 
 void Ops_right(struct State *s){
-	putc((char)s->state, stdout);
+	putc((char)s->hand, stdout);
 }
 
 void Ops_left(struct State *s){
-	s->state = getc(stdin);
+	s->hand = getc(stdin);
 }
 
 void Ops_semi(struct State *s){