Get the bodies, footers working in the c-api

rust-ffi-demo/.gitignore

@@ -0,0 +1,2 @@
+demo
+demo.h

rust-ffi-demo/Makefile

@@ -0,0 +1,9 @@
+LDFLAGS := -L../src/rust-base/target/debug -lstorybook -Wl,--gc-sections -lpthread -ldl
+.PHONY: all clean
+all: demo
+demo: demo.h demo.c
+	$(CC) -g $^ $(LDFLAGS) -o $@
+demo.h:
+	cbindgen -c ../src/rust-base/cbindgen.toml --crate storybook --lang c -o demo.h ../src/rust-base
+clean:
+	rm -f demo demo.h

rust-ffi-demo/demo.c

@@ -0,0 +1,47 @@
+#include <stdio.h>
+#include <stdint.h>
+
+#include "demo.h"
+
+const char* story = "START\n"
+  "One day, Dane took a really big shit!\n"
+  "GOTO DIALOG\n"
+	"DIALOG\n"
+	"\"Wow, that was a really big shit!\"\n"
+	"1) Die [DIE]\n"
+	"2) Don't die <Strength 100+> [DONT_DIE] (-1 Honor)\n"
+	"DONT_DIE\n"
+	"But he died anyways.\n"
+	"GOTO DIE\n"
+  "DIE\n"
+  "Then he died. Fuck you, Dane!\n"
+  "THE END\n";
+
+int main() {
+  Book *book = storybook_make_book(story);
+
+  while(!storybook_is_ended(book)) {
+    char* s = storybook_get_body(book);
+    printf("%s\n", s);
+    storybook_free_string(s);
+
+    enum footer footer = storybook_get_footer(book);
+    switch (footer) {
+    case (FOOTER_ENDING):
+      printf("The End\n");
+      storybook_advance_nooption(book);
+      break;
+    case (FOOTER_GOTO):
+      storybook_advance_nooption(book);
+      break;
+    case (FOOTER_CHOICES):
+	    uint32_t option;
+	    printf("Make a choice: ");
+	    scanf("%d", &option);
+	    storybook_advance_option(book, option);
+    }
+  }
+  
+  storybook_free_book(book);
+  return 0;
+}