Better Logging For Commands

Better messages for the commands

src/tasks.c

@@ -226,7 +226,15 @@ void TASKS_do_all_tasks(){
     while(cll != NULL){
       char *cmd = cll->data;
       printf("+ %s\n", cmd);
-      system(cmd);
+      int r_code = system(cmd);
+
+      if(errno != 0 && r_code == -1)
+	perror(cmd);
+      
+      if(r_code != EXIT_SUCCESS)
+	printf("[✗] FAILED COMMAND : %s\n[✗] C system() function return value : %d\n", cmd, r_code);
+      else
+	printf("[✔] COMPLETED COMMAND : %s\n[✔] C system() function return value : %d\n", cmd, r_code);
       cll = cll->next;
     }
     printf("\n");
@@ -265,7 +273,7 @@ void TASKS_do_tasks_ifchange(char *filename){
       icll = icll->next;
     }
 
-    if(map == NULL) skip_task = false;
+    if(map == NULL || tasks[i].ifchange == NULL) skip_task = false;
     if(skip_task) continue;
     
     printf("[*] EXECUTING TASK : %s\n", tasks[i].name);
@@ -273,13 +281,24 @@ void TASKS_do_tasks_ifchange(char *filename){
     while(cll != NULL){
       char *cmd = cll->data;
       printf("+ %s\n", cmd);
-      system(cmd);
+      int r_code = system(cmd);
+
+      // Don't know if this is cross platform, but according to Linux man-pages 6.03
+      // If a  child process could  not be created, or  its status could not be retrieved, the  return value is -1 and errno is set to indicate the error.
+      if(errno != 0 && r_code == -1)
+	perror(cmd);
+      
+      if(r_code != EXIT_SUCCESS)
+	printf("[✗] FAILED COMMAND : %s\n[✗] C system() function return value : %d\n", cmd, r_code);
+      else
+	printf("[✔] COMPLETED COMMAND : %s\n[✔] C system() function return value : %d\n", cmd, r_code);
       cll = cll->next;
     }
     printf("\n");
   }
 
   if(new_map != NULL){
+    printf("\n<-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <-> <->\n");
     printf("\nSaving file named %s with sha1 values\n", binary_filename);
     LookupList_print(new_map);
     LookupList_store(new_map, binary_filename);
@@ -291,6 +310,7 @@ void TASKS_do_tasks_ifchange(char *filename){
 }
 
 int main(int argc, char *argv[]){
+  errno = 0;
   char *tasks_file = "main.tsk";
   
   if(argc > 1){