Better externalization, begin storybook class

.gitignore

@@ -1,4 +1,4 @@
-cyoa
-cyoa.c
+*.o
 storybook
-src/storybook
+src/storybook
+src/cyoa.cpp

Makefile

@@ -1,3 +1,4 @@
+.PHONY: all clean storybook
 all: storybook
 storybook:
 	$(MAKE) -C src storybook

src/Makefile

@@ -1,10 +1,9 @@
-CC = g++
-CFLAGS = -g
+CXXFLAGS = -g
+OBJS = cyoa.o
 
 all: storybook
-storybook: main.c cyoa.c
-	$(CC) $(CFLAGS) main.c -o storybook
-cyoa.c: cyoa.leg
+storybook: storybook.cpp cyoa.o
+cyoa.cpp: cyoa.leg
 	leg -o $@ $^
 clean:
-	rm -f cyoa.c cyoa storybook
+	rm -f cyoa.c $(OBJS) storybook

src/cyoa.h

@@ -0,0 +1,62 @@
+#ifndef CYOA_H
+#define CYOA_H
+
+#include <vector>
+
+#define STATCHECK_GT 1
+#define STATCHECK_LT 2
+
+struct statcheck_t {
+  char *stat;
+  int value;
+  int rel;
+};
+
+struct statchange_t {
+  char *stat;
+  int addend;
+};
+
+struct Choice {
+  int option;
+  char *flavor;
+  statcheck_t *statcheck;
+  char *id;
+  statchange_t *statchange;
+
+  Choice(char*, statcheck_t *statcheck, statchange_t *statchange);
+};
+
+enum class FooterType {
+  End,
+  Goto,
+  Choices
+};
+
+struct Footer {
+  FooterType type;
+  union {
+    std::vector<Choice*> *choices;
+    char *link;
+  };
+
+  Footer();
+  ~Footer();
+};
+
+struct Page {
+  char *id;
+  char *body;
+  Footer footer;
+
+  Page();
+  ~Page();
+};
+
+std::vector<Page*> CyoaParse(FILE *);
+
+#endif /* CYOA_H */
+
+// Local Variables:
+// mode: c++
+// End:

src/cyoa.leg

@@ -1,9 +1,9 @@
 %{
 
-#include <vector>
 #include <cstdio>
 #include <cstdlib>
 #include <cassert>
+#include "cyoa.h"
 
 FILE* yyin = stdin;
 
@@ -12,56 +12,6 @@ FILE* yyin = stdin;
     result = (EOF == yyc) ? 0 : (*(buf) = yyc, 1); \
   }
 
-#define STATCHECK_GT 1
-#define STATCHECK_LT 2
-
-struct statcheck_t {
-  char *stat;
-  int value;
-  int rel;
-};
-
-struct statchange_t {
-  char *stat;
-  int addend;
-};
-
-struct Choice {
-  int option;
-  char *flavor;
-  statcheck_t *statcheck;
-  char *id;
-  statchange_t *statchange;
-
-  Choice(char*, statcheck_t *statcheck, statchange_t *statchange);
-};
-
-enum class FooterType {
-  End,
-  Goto,
-  Choices
-};
-
-struct Footer {
-  FooterType type;
-  union {
-    std::vector<Choice*> *choices;
-    char *link;
-  };
-
-  Footer();
-  ~Footer();
-};
-
-struct Page {
-  char *id;
-  char *body;
-  Footer footer;
-
-  Page();
-  ~Page();
-};
-
 std::vector<Page*> pages;
 
 Page *emit_ending();

src/storybook.cpp

@@ -0,0 +1,57 @@
+#include <cstdlib>
+#include <cstring>
+
+#include "storybook.h"
+
+void usage(const char* bin) {
+  fprintf(stderr, "Usage: %s <storyfile>", bin);
+  exit(1);
+}
+
+int main(int argc, const char *argv[]) {
+  if (argc != 2) {
+    usage(argv[0]);
+  }
+
+  FILE *fin = fopen(argv[1], "r");
+  if (!fin) {
+    fprintf(stderr, "Error: could not read %s", argv[1]);
+    return 2;
+  }
+  Storybook sb(fin);
+  fclose(fin);
+
+  sb.Find("START");
+  sb.Play();
+
+  while (!sb.IsEnded()) {
+    sb.Play();
+  }
+
+  return 0;
+}
+
+
+Storybook::Storybook(FILE* fin) {
+  pages = CyoaParse(fin);
+}
+
+
+void Storybook::Find(const char* id) {
+  for (Page* page : pages) {
+    if (strcmp(page->id, id) == 0) {
+      current = page;
+      return;
+    }
+  }
+  // If not found
+  current = NULL;
+}
+
+void Storybook::Play() {
+  printf(current->body);
+}
+
+bool Storybook::IsEnded() {
+  return true; // TODO
+}

src/storybook.h

@@ -0,0 +1,19 @@
+#ifndef STORYBOOK_H
+#define STORYBOOK_H
+
+#include <vector>
+#include <cstdio>
+#include "cyoa.h"
+
+class Storybook {
+private:
+  std::vector<Page*> pages;
+  Page *current;
+public:
+  Storybook(FILE* fin);
+  void Find(const char*);
+  void Play();
+  bool IsEnded();
+};
+
+#endif /* STORYBOOK_H */