Allow empty lines in the configuration file.

state.c

@@ -111,6 +111,7 @@ void state_config(struct snapraid_state* state, const char* path, int verbose, i
 		/* here we use strtoken_trim() to eat extra spaces inserted by the user */
 
 		/* skip ending spaces */
+		--ret;
 		while (ret>0 && isspace(s[ret-1])) {
 			--ret;
 			s[ret] = 0;

util.c

@@ -40,7 +40,7 @@ int strgets(char* s, unsigned size, FILE* f)
 		*i++ = c;
 
 		if (i == send) {
-			return -1;
+			return -1; /* return error if the buffer is full */
 		}
 	}
 
@@ -64,7 +64,7 @@ int strgets(char* s, unsigned size, FILE* f)
 
 	*i = 0;
 
-	return i - s;
+	return i - s + 1;
 }
 
 int stru32(const char* s, uint32_t* value)

util.h

@@ -47,7 +47,7 @@ static inline char* strtoken_trim(char* s)
 		++s;
 	}
 
-	/* skip ending spaces */
+	/* skip spaces */
 	while (*s && isspace(*s))
 		++s;
 
@@ -56,7 +56,7 @@ static inline char* strtoken_trim(char* s)
 
 /**
  * Gets a text line from a file.
- * Returns -1 on error, 0 on oef, or the number of chars read.
+ * Returns -1 on error, 0 on OEF, or the number of chars returned in the buffer, including the ending 0.
  */
 int strgets(char* s, unsigned size, FILE* f);