'dropouts' is a (very) little more careful about checking that TLEs a…

…re properly formatted. It also counts how many TLEs are read and displays it (that total will be used in subsequent commits).

dropouts.c

@@ -72,14 +72,24 @@ int main( const int argc, const char **argv)
    FILE *ifile = fopen( argc == 1 ? "all_tle.txt" : argv[1], "rb");
    char buff[100];
    size_t i;
-   int trouble_found = 0;
+   int trouble_found = 0, n_found = 0;
 
    assert( ifile);
    while( fgets( buff, sizeof( buff), ifile))
-      if( *buff == '1' && buff[1] == ' ')
-         for( i = 0; sats[i]; i++)
-            if( sats[i][0] == buff[9] && !memcmp( sats[i], buff + 9, 7))
-               sats[i] = "";
+      if( *buff == '1' && buff[1] == ' ' && buff[7] == 'U')
+         {
+         size_t len = strlen( buff);
+
+         while( len && buff[len - 1] < ' ')
+            len--;
+         if( 69 == len)
+            {
+            n_found++;
+            for( i = 0; sats[i]; i++)
+               if( sats[i][0] == buff[9] && !memcmp( sats[i], buff + 9, 7))
+                  sats[i] = "";
+            }
+         }
    fclose( ifile);
    printf( "This will list high-flying artsats for which TLEs are not provided :\n");
    for( i = 0; sats[i]; i++)
@@ -101,5 +111,6 @@ int main( const int argc, const char **argv)
    if( !trouble_found)
       printf( "Any missing objects are covered by other sources.  Nothing\n"
               "to worry about here.\n");
+   printf( "%d found\n", (int)n_found);
    return( 0);
 }