Sort case code blocks on the basis of case labels

Question

How does one sort code blocks associated with each case (as part of a large switch case construct) on the basis of the case label?

What I want is to transform -

switch(val)
{
    case C_LABEL:
        /* do something */
        break;

    case A_LABEL:
        /* do something else*/
        break;

    case B_LABEL:
        /* do something really different */
        break;

    default:
        printf("'val' not recognized");
}

into -

switch(val)
{
    case A_LABEL:
        /* do something else */
        break;

    case B_LABEL:
        /* do something really different */
        break;

    case C_LABEL:
        /* do something */
        break;

    default:
        printf("'val' not recognized");
}

Answer 1

1. Turn each case into a one liner:

   :fromline,tolineg/case/.,/break/s/\n/§
   

2. Sort them:

   :fromline,tolinesort
   

3. Reformat them:

   :fromline,tolines/§/\r/g
   

Notes:

• Visual mode can be a practical way to define the range for those commands.
• You could make a macro if you have to do that often.