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   1 /* testavl.c - Test Tim Howes AVL code */
   2
   3 #include "portable.h"
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7
   8 #include <ac/string.h>
   9 #include <sys/types.h>
  10
  11 #include "avl.h"
  12
  13 static void ravl_print LDAP_P(( Avlnode *root, int depth ));
  14 static void myprint LDAP_P(( Avlnode *root ));
  15
  16 main( argc, argv )
  17 int     argc;
  18 char    **argv;
  19 {
  20         Avlnode *tree = NULLAVL;
  21         char    command[ 10 ];
  22         char    name[ 80 ];
  23         char    *p;
  24
  25         printf( "> " );
  26         while ( fgets( command, sizeof( command ), stdin ) != NULL ) {
  27                 switch( *command ) {
  28                 case 'n':       /* new tree */
  29                         ( void ) avl_free( tree, free );
  30                         tree = NULLAVL;
  31                         break;
  32                 case 'p':       /* print */
  33                         ( void ) myprint( tree );
  34                         break;
  35                 case 't':       /* traverse with first, next */
  36                         printf( "***\n" );
  37                         for ( p = (char * ) avl_getfirst( tree );
  38                             p != NULL; p = (char *) avl_getnext( /* tree, p */ ) )
  39                                 printf( "%s\n", p );
  40                         printf( "***\n" );
  41                         break;
  42                 case 'f':       /* find */
  43                         printf( "data? " );
  44                         if ( fgets( name, sizeof( name ), stdin ) == NULL )
  45                                 exit( 0 );
  46                         name[ strlen( name ) - 1 ] = '\0';
  47                         if ( (p = (char *) avl_find( tree, name, strcmp ))
  48                             == NULL )
  49                                 printf( "Not found.\n\n" );
  50                         else
  51                                 printf( "%s\n\n", p );
  52                         break;
  53                 case 'i':       /* insert */
  54                         printf( "data? " );
  55                         if ( fgets( name, sizeof( name ), stdin ) == NULL )
  56                                 exit( 0 );
  57                         name[ strlen( name ) - 1 ] = '\0';
  58                         if ( avl_insert( &tree, strdup( name ), strcmp,
  59                             avl_dup_error ) != 0 )
  60                                 printf( "\nNot inserted!\n" );
  61                         break;
  62                 case 'd':       /* delete */
  63                         printf( "data? " );
  64                         if ( fgets( name, sizeof( name ), stdin ) == NULL )
  65                                 exit( 0 );
  66                         name[ strlen( name ) - 1 ] = '\0';
  67                         if ( avl_delete( &tree, name, strcmp ) == NULL )
  68                                 printf( "\nNot found!\n" );
  69                         break;
  70                 case 'q':       /* quit */
  71                         exit( 0 );
  72                         break;
  73                 case '\n':
  74                         break;
  75                 default:
  76                         printf("Commands: insert, delete, print, new, quit\n");
  77                 }
  78
  79                 printf( "> " );
  80         }
  81         /* NOTREACHED */
  82 }
  83
  84 static void ravl_print( Avlnode *root, int depth )
  85 {
  86         int     i;
  87
  88         if ( root == 0 )
  89                 return;
  90
  91         ravl_print( root->avl_right, depth+1 );
  92
  93         for ( i = 0; i < depth; i++ )
  94                 printf( "   " );
  95         printf( "%s %d\n", root->avl_data, root->avl_bf );
  96
  97         ravl_print( root->avl_left, depth+1 );
  98 }
  99
 100 static void myprint( Avlnode *root )
 101 {
 102         printf( "********\n" );
 103
 104         if ( root == 0 )
 105                 printf( "\tNULL\n" );
 106         else
 107                 ravl_print( root, 0 );
 108
 109         printf( "********\n" );
 110 }