err.no Git - sope/blob - sope-xml/DOM/DOMPYXOutputter.m

   1 /*
   2   Copyright (C) 2000-2005 SKYRIX Software AG
   3
   4   This file is part of SOPE.
   5
   6   SOPE is free software; you can redistribute it and/or modify it under
   7   the terms of the GNU Lesser General Public License as published by the
   8   Free Software Foundation; either version 2, or (at your option) any
   9   later version.
  10
  11   SOPE is distributed in the hope that it will be useful, but WITHOUT ANY
  12   WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13   FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  14   License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public
  17   License along with SOPE; see the file COPYING.  If not, write to the
  18   Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  19   02111-1307, USA.
  20 */
  21
  22 #include "DOMPYXOutputter.h"
  23 #include "DOMDocument.h"
  24 #include "DOMElement.h"
  25 #include "common.h"
  26
  27 @interface NGDOMPYXOutputter(Privates)
  28 - (void)outputNode:(id)_node to:(id)_target;
  29 - (void)outputNodeList:(id)_nodeList to:(id)_target;
  30 @end
  31
  32 @implementation NGDOMPYXOutputter
  33
  34 - (void)write:(NSString *)s to:(id)_target {
  35   printf("%s", [s cString]);
  36 }
  37 - (BOOL)currentElementPreservesWhitespace {
  38   return NO;
  39 }
  40
  41 - (void)outputAttributeNode:(id<DOMAttr>)_attrNode
  42   ofNode:(id<DOMNode>)_node
  43   to:(id)_target
  44 {
  45   [self write:@"A"                  to:_target];
  46   [self write:[_attrNode name]      to:_target];
  47   [self write:@" "                  to:_target];
  48   [self write:[_attrNode nodeValue] to:_target];
  49   [self write:@"\n"                 to:_target];
  50 }
  51
  52 - (void)outputAttributeNodes:(id<DOMNamedNodeMap>)_nodes
  53   ofNode:(id<DOMNode>)_node
  54   to:(id)_target
  55 {
  56   unsigned i, count;
  57
  58   if ((count = [_nodes length]) == 0)
  59     return;
  60
  61   for (i = 0; i < count; i++) {
  62     [self outputAttributeNode:[_nodes objectAtIndex:i]
  63           ofNode:_node
  64           to:_target];
  65   }
  66 }
  67
  68 - (void)outputTextNode:(id<DOMText>)_node to:(id)_target {
  69   NSString *s;
  70   unsigned len;
  71
  72   s = [_node data];
  73   if ((len = [s length]) == 0)
  74     return;
  75
  76   if ([s rangeOfString:@"\n"].length != 0) {
  77     s = [[s componentsSeparatedByString:@"\n"]
  78             componentsJoinedByString:@"\\n"];
  79   }
  80
  81   [self write:@"-"  to:_target];
  82   [self write:s     to:_target];
  83   [self write:@"\n" to:_target];
  84 }
  85 - (void)outputCommentNode:(id<DOMComment>)_node to:(id)_target {
  86   [self write:@"<!-- "     to:_target];
  87   [self write:[_node data] to:_target];
  88   [self write:@" -->"      to:_target];
  89
  90   if (![self currentElementPreservesWhitespace])
  91     [self write:@"\n" to:_target];
  92 }
  93
  94 - (void)outputElementNode:(id<DOMElement>)_node to:(id)_target {
  95   NSString *tagName;
  96   NSString *ns;
  97
  98   /* needs to declare namespaces !!! */
  99   tagName = [_node tagName];
 100   if ([[_node prefix] length] > 0) {
 101     NSString *p = [_node prefix];
 102
 103     p       = [p stringByAppendingString:@":"];
 104     tagName = [p stringByAppendingString:tagName];
 105
 106     ns = [NSString stringWithFormat:@" xmlns:%@=\"%@\"",
 107                      [_node prefix],
 108                      [_node namespaceURI]];
 109   }
 110   else if ([[_node namespaceURI] length] > 0) {
 111     ns = [NSString stringWithFormat:@" xmlns=\"%@\"", [_node namespaceURI]];
 112   }
 113   else
 114     ns = nil;
 115
 116   [self write:@"("    to:_target];
 117   [self write:tagName to:_target];
 118   [self write:@"\n"   to:_target];
 119
 120   [self outputAttributeNodes:[_node attributes] ofNode:_node to:_target];
 121
 122   if ([_node hasChildNodes])
 123     [self outputNodeList:[_node childNodes] to:_target];
 124
 125   [self write:@")"    to:_target];
 126   [self write:tagName to:_target];
 127   [self write:@"\n"   to:_target];
 128 }
 129
 130 - (void)outputCDATA:(id<DOMCharacterData>)_node to:(id)_target {
 131   NSString *s;
 132
 133   s = [_node data];
 134
 135   if ([s rangeOfString:@"\n"].length != 0) {
 136     /* escape newlines */
 137     s = [[s componentsSeparatedByString:@"\n"]
 138             componentsJoinedByString:@"\\n"];
 139   }
 140
 141   [self write:@"-"  to:_target];
 142   [self write:s     to:_target];
 143   [self write:@"\n" to:_target];
 144 }
 145
 146 - (void)outputPI:(id<DOMProcessingInstruction>)_node to:(id)_target {
 147   [self write:@"?"           to:_target];
 148   [self write:[_node target] to:_target];
 149   [self write:@" "           to:_target];
 150   [self write:[_node data]   to:_target];
 151   [self write:@"\n"          to:_target];
 152 }
 153
 154 - (void)outputNode:(id)_node to:(id)_target {
 155   switch ([_node nodeType]) {
 156     case DOM_ELEMENT_NODE:
 157       [self outputElementNode:_node to:_target];
 158       break;
 159     case DOM_CDATA_SECTION_NODE:
 160       [self outputCDATA:_node to:_target];
 161       break;
 162     case DOM_PROCESSING_INSTRUCTION_NODE:
 163       [self outputPI:_node to:_target];
 164       break;
 165     case DOM_TEXT_NODE:
 166       [self outputTextNode:_node to:_target];
 167       break;
 168     case DOM_COMMENT_NODE:
 169       [self outputCommentNode:_node to:_target];
 170       break;
 171
 172     default:
 173       NSLog(@"cannot output node %@", _node);
 174       break;
 175   }
 176 }
 177 - (void)outputNodeList:(id)_nodeList to:(id)_target {
 178   id       children;
 179   unsigned i, count;
 180
 181   children = _nodeList;
 182
 183   for (i = 0, count = [children count]; i < count; i++)
 184     [self outputNode:[children objectAtIndex:i] to:_target];
 185 }
 186
 187 - (void)outputDocument:(id)_document to:(id)_target {
 188   if (![_document hasChildNodes])
 189     return;
 190
 191   NS_DURING
 192     [self outputNodeList:[_document childNodes] to:_target];
 193   NS_HANDLER
 194     fprintf(stderr, "%s\n", [[localException description] cString]);
 195     abort();
 196   NS_ENDHANDLER;
 197 }
 198
 199 @end /* DOMPYXOutputter */