Fixed empty loop causeing infinite loop

If a loop was defined in the template, but no loop was defined
in the varlist, render() would infinite loop while trying to
execute. Fixs that.

1 files changed, 72 insertions, 0 deletions

diff --git a/t/test_3.c b/t/test_3.c
new file mode 100644
index 0000000..dc55aa6
--- /dev/null
+++ b/t/test_3.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+
+#include <ctemplates.h>
+
+//Nested loops w/ break
+char t_1[] = "What is a loop with no items?<TMPL_LOOP name=\"loop1\">Something<TMPL_END>\nA sad little pile of bits!";
+char c_1_1[] = "What is a loop with no items?\nA sad little pile of bits!";
+char c_1_2[] = "What is a loop with no items?\nA sad little pile of bits!";
+
+#define log(x) printf(x)
+
+#define check(n,n2,a,b)\
+	if(strcmp(a,b) != 0){\
+		fprintf(stderr, "Error in test 3.%d.%d\n",n,n2);\
+		printf("Result should have been '%s'\n was '%s'\n", b, a);\
+		if(t->error)\
+			printf(TMPL_err(t, NULL));\
+		return -1;\
+	}else{\
+		printf("\n\n##########\n##Test %d.%d passed\n##########\n\n\n",n,n2);\
+	}
+
+#define check_isnull(n,n2,a)\
+	if(a != NULL){\
+		fprintf(stderr, "Error in test 3.%d.%d\n",n,n2);\
+		printf("Result should have been NULL\n was '%s'\n", a);\
+		if(t->error)\
+			printf(TMPL_err(t, NULL));\
+		return -1;\
+	}else{\
+		printf("\n\n##########\n##Test %d.%d passed\n##########\n\n\n",n,n2);\
+	}
+
+#define template(x,y) \
+	err = TMPL_alloc_template(x,&y);\
+	if(err != 0){\
+		printf("Error: %s\n",TMPL_err(y,&dummy));\
+		return -1;\
+	}
+
+int main(){
+	log("Running tests2\n");
+	struct TMPL_templates* t;
+	struct TMPL_varlist *vl,*vl1,*vl2;
+	struct TMPL_loop *l1,*l2;
+	char* ret;
+	size_t dummy;
+	int err;
+	
+	/*Test 1: Variable*/
+	template(t_1,t);
+	vl = TMPL_alloc_varlist();
+	l1 = TMPL_alloc_loop();
+	TMPL_add_loop_to_varlist(vl,"loop1",l1);
+	ret = TMPL_render(t,vl,&dummy);
+	check(1,1,ret,c_1_1);
+	TMPL_free_template(t);
+	TMPL_free_varlist(vl);
+	log("Test 1 complete\n");
+
+	template(t_1,t);
+	vl = TMPL_alloc_varlist();
+	l1 = TMPL_alloc_loop();
+	TMPL_add_loop_to_varlist(vl,"notaloop",l1);
+	ret = TMPL_render(t,vl,&dummy);
+	check_isnull(1,2,ret);
+	TMPL_free_template(t);
+	TMPL_free_varlist(vl);
+	log("Test 2 complete\n");
+
+	return 0;
+}