[lib-result] fprint_*(): const pointers & asserts

owl_fprint_*():
- Mark pointer arguments as const.
- Rename main argument "src".
- Use assertion to check the source.

libowlps-resultreader-udp/libowlps-resultreader-udp.c

@@ -4,6 +4,8 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+#include <assert.h>
+
 
 #define CSV_DELIMITER ";"
 
@@ -183,23 +185,25 @@ void owl_fill_result(owl_result **result, char *csv)
 /*
  * Prints an owl_result to the given stream.
  */
-void owl_fprint_result(FILE *stream, owl_result *result)
+void owl_fprint_result(FILE *stream, const owl_result *const src)
 {
   char timestamp_str[OWL_TIMESTAMP_STRLEN] ;
-  owl_timestamp_to_string(timestamp_str, result->mobile_timestamp) ;
 
+  assert(src) ;
+
+  owl_timestamp_to_string(timestamp_str, src->mobile_timestamp) ;
   fprintf(stream,
           "Mobile MAC: %s\n"
           "Request type: %"PRIu8"\n"
           "Mobile timestamp: %s\n"
           "Results:\n"
           ,
-          result->mobile_mac_addr,
-          result->request_type,
+          src->mobile_mac_addr,
+          src->request_type,
           timestamp_str
           ) ;
 
-  owl_algorithm_result *algo = result->results ;
+  owl_algorithm_result *algo = src->results ;
   while (algo)
     {
       owl_fprint_algorithm_result(stream, algo) ;
@@ -209,11 +213,13 @@ void owl_fprint_result(FILE *stream, owl_result *result)
 
 
 /*
- * Prints an owl_result to the given stream.
+ * Prints an owl_algorithm_result to the given stream.
  */
 void owl_fprint_algorithm_result(FILE *stream,
-                                 owl_algorithm_result *algo)
+                                 const owl_algorithm_result *const src)
 {
+  assert(src) ;
+
   fprintf(stream,
           "* Algorithm: %s\n"
           "  X: %f\n"
@@ -222,12 +228,12 @@ void owl_fprint_algorithm_result(FILE *stream,
           "  Error: %f\n"
           "  Area: %s\n"
           ,
-          algo->algorithm,
-          algo->x,
-          algo->y,
-          algo->z,
-          algo->error,
-          algo->area ? algo->area : ""
+          src->algorithm,
+          src->x,
+          src->y,
+          src->z,
+          src->error,
+          src->area ? src->area : ""
           ) ;
 }
 

libowlps-resultreader-udp/owlps-resultreader-udp.h

@@ -55,13 +55,13 @@ typedef struct _owl_result
 void owl_receive_position(int sockfd, owl_result **result) ;
 void owl_fill_result(owl_result **result, char *csv) ;
 
-void owl_fprint_result(FILE *stream, owl_result *result) ;
+void owl_fprint_result(FILE *stream, const owl_result *const src) ;
 void owl_fprint_algorithm_result(FILE *stream,
-                                 owl_algorithm_result *algo) ;
-#define owl_print_result(RESULT) \
-  (owl_fprint_result(stdout, (RESULT)))
-#define owl_print_algorithm_result(ALGO) \
-  (owl_fprint_algorithm_result(stdout, (ALGO)))
+                                 const owl_algorithm_result *const src) ;
+#define owl_print_result(SRC) \
+  (owl_fprint_result(stdout, (SRC)))
+#define owl_print_algorithm_result(SRC) \
+  (owl_fprint_algorithm_result(stdout, (SRC)))
 
 void owl_free_result(owl_result *result) ;
 void owl_free_algorithm_result(owl_algorithm_result *algo) ;