Source/NSXMLElementAdditions.m

   1 /*
   2  * MacGDBp
   3  * Copyright (c) 2002 - 2007, Blue Static <http://www.bluestatic.org>
   4  *
   5  * This program is free software; you can redistribute it and/or modify it under the terms of the GNU
   6  * General Public License as published by the Free Software Foundation; either version 2 of the
   7  * License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
  10  * even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with this program; if not,
  14  * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  15  */
  16
  17 #import <Cocoa/Cocoa.h>
  18 #include "base64.h"
  19
  20 @implementation NSXMLElement (NSXMLElementAdditions)
  21
  22 /**
  23  * Return's the property's name from the attributes list
  24  */
  25 - (NSString *)variable
  26 {
  27         return [[self attributeForName: @"name"] stringValue];
  28 }
  29
  30 /**
  31  * Returns whether or not this node has any children
  32  */
  33 - (BOOL)isLeaf
  34 {
  35         BOOL leaf = ([[[self attributeForName: @"children"] stringValue] intValue] == 0);
  36
  37         // hmm... we're not a leaf but have no children. this must be beyond our depth, so go make us
  38         // deeper
  39         if (!leaf && [[self children] count] < 1)
  40         {
  41                 // count upwards to see how deep we should go
  42                 int depth = 0;
  43                 NSXMLElement *elm = self;
  44                 while (elm != nil)
  45                 {
  46                         depth++;
  47                         elm = (NSXMLElement *)[elm parent];
  48                 }
  49                 NSLog(@"let's go to depth %d for %@", depth, self);
  50         }
  51
  52         return leaf;
  53 }
  54
  55 /**
  56  * Returns the value of the property
  57  */
  58 - (NSString *)value
  59 {
  60         // not a leaf, so don't display any value
  61         if (![self isLeaf])
  62         {
  63                 return @"...";
  64         }
  65
  66         // base64 encoded data
  67         if ([[[self attributeForName: @"encoding"] stringValue] isEqualToString: @"base64"])
  68         {
  69                 char *str = (char *)[[self stringValue] cStringUsingEncoding: NSASCIIStringEncoding];
  70                 int strlen = [[self stringValue] lengthOfBytesUsingEncoding: NSASCIIStringEncoding];
  71
  72                 char *data;
  73                 size_t datalen;
  74
  75                 if (!base64_decode_alloc(str, strlen, &data, &datalen))
  76                 {
  77                         NSLog(@"error in converting %@ to base64", self);
  78                 }
  79
  80                 return [NSString stringWithCString: data length: datalen];
  81         }
  82
  83         // just a normal string
  84         return [self stringValue];
  85 }
  86
  87 /**
  88  * Returns the type of variable this is
  89  */
  90 - (NSString *)type
  91 {
  92         return [[self attributeForName: @"type"] stringValue];
  93 }
  94
  95 @end