put temperature on screen

1 files changed, 8 insertions, 10 deletions

diff --git a/input_gadgets.c b/input_gadgets.c
index 7aeb09a..00a2d36 100644
--- a/input_gadgets.c
+++ b/input_gadgets.c
@@ -28,7 +28,7 @@ WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp)
   return realsize;
 }
 
-int gadgets_retrieve_temperature(char **output)
+int gadgets_retrieve_temperature(unsigned char *output, int max_len)
 {
   CURL *curl_handle;
   CURLcode res;
@@ -78,15 +78,13 @@ int gadgets_retrieve_temperature(char **output)
     return EXIT_FAILURE;
   }
   regfree(&re);
-  output[0] = malloc((int)(rm[1].rm_eo - rm[1].rm_so + 1));
-  if (output[0] == NULL) {
-    fprintf(stderr, "malloc failed allocating %d bytes\n", (int)(rm[1].rm_eo - rm[1].rm_so + 1));
-    free(chunk.memory);
-    return EXIT_FAILURE;
-  }
-  printf("allocated %d bytes\n", (int)(rm[1].rm_eo - rm[1].rm_so + 1));
-  memmove(output[0], chunk.memory + rm[1].rm_so, (int)(rm[1].rm_eo - rm[1].rm_so));
-  output[0][(int)(rm[1].rm_eo - rm[1].rm_so)] = '\0';
+  if ((int)(rm[1].rm_eo - rm[1].rm_so) < max_len - 1)
+    max_len = (int)(rm[1].rm_eo - rm[1].rm_so) + 1;
+  memmove(output, chunk.memory + rm[1].rm_so, max_len - 1);
+  output[max_len - 1] = '\0';
+  for (int i=0; i<max_len; i++)
+    if (output[i] == '.')
+      output[i] = ',';
   free(chunk.memory);
   return 0;
 }