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1 | /* |
2 | * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. | |
3 | * | |
4 | * @APPLE_LICENSE_HEADER_START@ | |
5 | * | |
6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. | |
7 | * | |
8 | * This file contains Original Code and/or Modifications of Original Code | |
9 | * as defined in and that are subject to the Apple Public Source License | |
10 | * Version 2.0 (the 'License'). You may not use this file except in | |
11 | * compliance with the License. Please obtain a copy of the License at | |
12 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
13 | * file. | |
14 | * | |
15 | * The Original Code and all software distributed under the License are | |
16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
20 | * Please see the License for the specific language governing rights and | |
21 | * limitations under the License. | |
22 | * | |
23 | * @APPLE_LICENSE_HEADER_END@ | |
24 | */ | |
25 | /* CFXMLTree.c | |
26 | Copyright 1999-2002, Apple, Inc. All rights reserved. | |
27 | Responsibility: Chris Parker | |
28 | */ | |
29 | ||
30 | #include "CFInternal.h" | |
31 | #include <CoreFoundation/CFXMLParser.h> | |
32 | ||
33 | /*************/ | |
34 | /* CFXMLTree */ | |
35 | /*************/ | |
36 | ||
37 | /* Creates a childless node from desc */ | |
38 | CFXMLTreeRef CFXMLTreeCreateWithNode(CFAllocatorRef allocator, CFXMLNodeRef node) { | |
39 | CFTreeContext treeCtxt; | |
40 | treeCtxt.version = 0; | |
41 | treeCtxt.info = (void *)node; | |
42 | treeCtxt.retain = CFRetain; | |
43 | treeCtxt.release = CFRelease; | |
44 | treeCtxt.copyDescription = CFCopyDescription; | |
45 | return CFTreeCreate(allocator, &treeCtxt); | |
46 | } | |
47 | ||
48 | CFXMLNodeRef CFXMLTreeGetNode(CFXMLTreeRef xmlNode) { | |
49 | CFTreeContext treeContext; | |
50 | treeContext.version = 0; | |
51 | CFTreeGetContext(xmlNode, &treeContext); | |
52 | return (CFXMLNodeRef)treeContext.info; | |
53 | } | |
54 | ||
55 | // We will probably ultimately want to export this under some public API name | |
56 | __private_extern__ Boolean CFXMLTreeEqual(CFXMLTreeRef xmlTree1, CFXMLTreeRef xmlTree2) { | |
57 | CFXMLNodeRef node1, node2; | |
58 | CFXMLTreeRef child1, child2; | |
59 | if (CFTreeGetChildCount(xmlTree1) != CFTreeGetChildCount(xmlTree2)) return false; | |
60 | node1 = CFXMLTreeGetNode(xmlTree1); | |
61 | node2 = CFXMLTreeGetNode(xmlTree2); | |
62 | if (!CFEqual(node1, node2)) return false; | |
63 | for (child1 = CFTreeGetFirstChild(xmlTree1), child2 = CFTreeGetFirstChild(xmlTree2); child1 && child2; child1 = CFTreeGetNextSibling(child1), child2 = CFTreeGetNextSibling(child2)) { | |
64 | if (!CFXMLTreeEqual(child1, child2)) return false; | |
65 | } | |
66 | return true; | |
67 | } | |
68 | ||
69 | static void _CFAppendXML(CFMutableStringRef str, CFXMLTreeRef tree); | |
70 | static void _CFAppendXMLProlog(CFMutableStringRef str, const CFXMLTreeRef node); | |
71 | static void _CFAppendXMLEpilog(CFMutableStringRef str, const CFXMLTreeRef node); | |
72 | ||
73 | CFDataRef CFXMLTreeCreateXMLData(CFAllocatorRef allocator, CFXMLTreeRef xmlTree) { | |
74 | CFMutableStringRef xmlStr; | |
75 | CFDataRef result; | |
76 | CFStringEncoding encoding; | |
77 | ||
78 | __CFGenericValidateType(xmlTree, CFTreeGetTypeID()); | |
79 | ||
80 | xmlStr = CFStringCreateMutable(allocator, 0); | |
81 | _CFAppendXML(xmlStr, xmlTree); | |
82 | if (CFXMLNodeGetTypeCode(CFXMLTreeGetNode(xmlTree)) == kCFXMLNodeTypeDocument) { | |
83 | const CFXMLDocumentInfo *docData = CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(xmlTree)); | |
84 | encoding = docData ? docData->encoding : kCFStringEncodingUTF8; | |
85 | } else { | |
86 | encoding = kCFStringEncodingUTF8; | |
87 | } | |
88 | result = CFStringCreateExternalRepresentation(allocator, xmlStr, encoding, 0); | |
89 | CFRelease(xmlStr); | |
90 | return result; | |
91 | } | |
92 | ||
93 | static void _CFAppendXML(CFMutableStringRef str, CFXMLTreeRef tree) { | |
94 | CFXMLTreeRef child; | |
95 | _CFAppendXMLProlog(str, tree); | |
96 | for (child = CFTreeGetFirstChild(tree); child; child = CFTreeGetNextSibling(child)) { | |
97 | _CFAppendXML(str, child); | |
98 | } | |
99 | _CFAppendXMLEpilog(str, tree); | |
100 | } | |
101 | ||
102 | __private_extern__ void appendQuotedString(CFMutableStringRef str, CFStringRef strToQuote) { | |
103 | char quoteChar = CFStringFindWithOptions(strToQuote, CFSTR("\""), CFRangeMake(0, CFStringGetLength(strToQuote)), 0, NULL) ? '\'' : '\"'; | |
104 | CFStringAppendFormat(str, NULL, CFSTR("%c%@%c"), quoteChar, strToQuote, quoteChar); | |
105 | } | |
106 | ||
107 | static void appendExternalID(CFMutableStringRef str, CFXMLExternalID *extID) { | |
108 | if (extID->publicID) { | |
109 | CFStringAppendCString(str, " PUBLIC ", kCFStringEncodingASCII); | |
110 | appendQuotedString(str, extID->publicID); | |
111 | if (extID->systemID) { | |
112 | // Technically, for externalIDs, systemID must not be NULL. However, by testing for a NULL systemID, we can use this to emit publicIDs, too. REW, 2/15/2000 | |
113 | CFStringAppendCString(str, " ", kCFStringEncodingASCII); | |
114 | appendQuotedString(str, CFURLGetString(extID->systemID)); | |
115 | } | |
116 | } else if (extID->systemID) { | |
117 | CFStringAppendCString(str, " SYSTEM ", kCFStringEncodingASCII); | |
118 | appendQuotedString(str, CFURLGetString(extID->systemID)); | |
119 | } else { | |
120 | // Should never get here | |
121 | } | |
122 | } | |
123 | ||
124 | static void appendElementProlog(CFMutableStringRef str, CFXMLTreeRef tree) { | |
125 | const CFXMLElementInfo *data = CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)); | |
126 | CFStringAppendFormat(str, NULL, CFSTR("<%@"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
127 | if (data->attributeOrder) { | |
128 | CFIndex i, c = CFArrayGetCount(data->attributeOrder); | |
129 | for (i = 0; i < c; i ++) { | |
130 | CFStringRef attr = CFArrayGetValueAtIndex(data->attributeOrder, i); | |
131 | CFStringRef value = CFDictionaryGetValue(data->attributes, attr); | |
132 | CFStringAppendFormat(str, NULL, CFSTR(" %@="), attr); | |
133 | appendQuotedString(str, value); | |
134 | } | |
135 | } | |
136 | if (data->isEmpty) { | |
137 | CFStringAppendCString(str, "/>", kCFStringEncodingASCII); | |
138 | } else { | |
139 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
140 | } | |
141 | } | |
142 | ||
143 | /* Although named "prolog", for leafs of the tree, this is the only XML generation function called. This is why Comments, Processing Instructions, etc. generate their XML during this function. REW, 2/11/2000 */ | |
144 | static void _CFAppendXMLProlog(CFMutableStringRef str, const CFXMLTreeRef tree) { | |
145 | switch (CFXMLNodeGetTypeCode(CFXMLTreeGetNode(tree))) { | |
146 | case kCFXMLNodeTypeDocument: | |
147 | break; | |
148 | case kCFXMLNodeTypeElement: | |
149 | appendElementProlog(str, tree); | |
150 | break; | |
151 | case kCFXMLNodeTypeAttribute: | |
152 | // Should never be encountered | |
153 | break; | |
154 | case kCFXMLNodeTypeProcessingInstruction: { | |
155 | CFXMLProcessingInstructionInfo *data = (CFXMLProcessingInstructionInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)); | |
156 | if (data->dataString) { | |
157 | CFStringAppendFormat(str, NULL, CFSTR("<?%@ %@?>"), CFXMLNodeGetString(CFXMLTreeGetNode(tree)), data->dataString); | |
158 | } else { | |
159 | CFStringAppendFormat(str, NULL, CFSTR("<?%@?>")); | |
160 | } | |
161 | break; | |
162 | } | |
163 | case kCFXMLNodeTypeComment: | |
164 | CFStringAppendFormat(str, NULL, CFSTR("<!--%@-->"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
165 | break; | |
166 | case kCFXMLNodeTypeText: | |
167 | CFStringAppend(str, CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
168 | break; | |
169 | case kCFXMLNodeTypeCDATASection: | |
170 | CFStringAppendFormat(str, NULL, CFSTR("<![CDATA[%@]]>"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
171 | break; | |
172 | case kCFXMLNodeTypeDocumentFragment: | |
173 | break; | |
174 | case kCFXMLNodeTypeEntity: { | |
175 | CFXMLEntityInfo *data = (CFXMLEntityInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)); | |
176 | CFStringAppendCString(str, "<!ENTITY ", kCFStringEncodingASCII); | |
177 | if (data->entityType == kCFXMLEntityTypeParameter) { | |
178 | CFStringAppend(str, CFSTR("% ")); | |
179 | } | |
180 | CFStringAppend(str, CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
181 | CFStringAppend(str, CFSTR(" ")); | |
182 | if (data->replacementText) { | |
183 | appendQuotedString(str, data->replacementText); | |
184 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
185 | } else { | |
186 | appendExternalID(str, &(data->entityID)); | |
187 | if (data->notationName) { | |
188 | CFStringAppendFormat(str, NULL, CFSTR(" NDATA %@"), data->notationName); | |
189 | } | |
190 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
191 | } | |
192 | break; | |
193 | } | |
194 | case kCFXMLNodeTypeEntityReference: | |
195 | { | |
196 | CFXMLEntityTypeCode entityType = ((CFXMLEntityReferenceInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)))->entityType; | |
197 | if (entityType == kCFXMLEntityTypeParameter) { | |
198 | CFStringAppendFormat(str, NULL, CFSTR("%%%@;"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
199 | } else { | |
200 | CFStringAppendFormat(str, NULL, CFSTR("&%@;"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
201 | } | |
202 | break; | |
203 | } | |
204 | case kCFXMLNodeTypeDocumentType: | |
205 | CFStringAppendCString(str, "<!DOCTYPE ", kCFStringEncodingASCII); | |
206 | CFStringAppend(str, CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
207 | if (CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree))) { | |
208 | CFXMLExternalID *extID = &((CFXMLDocumentTypeInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)))->externalID; | |
209 | appendExternalID(str, extID); | |
210 | } | |
211 | CFStringAppendCString(str, " [", kCFStringEncodingASCII); | |
212 | break; | |
213 | case kCFXMLNodeTypeWhitespace: | |
214 | CFStringAppend(str, CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
215 | break; | |
216 | case kCFXMLNodeTypeNotation: { | |
217 | CFXMLNotationInfo *data = (CFXMLNotationInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)); | |
218 | CFStringAppendFormat(str, NULL, CFSTR("<!NOTATION %@ "), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
219 | appendExternalID(str, &(data->externalID)); | |
220 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
221 | break; | |
222 | } | |
223 | case kCFXMLNodeTypeElementTypeDeclaration: | |
224 | CFStringAppendFormat(str, NULL, CFSTR("<!ELEMENT %@ %@>"), CFXMLNodeGetString(CFXMLTreeGetNode(tree)), ((CFXMLElementTypeDeclarationInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)))->contentDescription); | |
225 | break; | |
226 | case kCFXMLNodeTypeAttributeListDeclaration: { | |
227 | CFXMLAttributeListDeclarationInfo *attListData = (CFXMLAttributeListDeclarationInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)); | |
228 | CFIndex idx; | |
229 | CFStringAppendCString(str, "<!ATTLIST ", kCFStringEncodingASCII); | |
230 | CFStringAppend(str, CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
231 | for (idx = 0; idx < attListData->numberOfAttributes; idx ++) { | |
232 | CFXMLAttributeDeclarationInfo *attr = &(attListData->attributes[idx]); | |
233 | CFStringAppendFormat(str, NULL, CFSTR("\n\t%@ %@ %@"), attr->attributeName, attr->typeString, attr->defaultString); | |
234 | } | |
235 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
236 | break; | |
237 | } | |
238 | default: | |
239 | CFAssert1(false, __kCFLogAssertion, "Encountered unexpected XMLDataTypeID %d", CFXMLNodeGetTypeCode(CFXMLTreeGetNode(tree))); | |
240 | } | |
241 | } | |
242 | ||
243 | static void _CFAppendXMLEpilog(CFMutableStringRef str, CFXMLTreeRef tree) { | |
244 | CFXMLNodeTypeCode typeID = CFXMLNodeGetTypeCode(CFXMLTreeGetNode(tree)); | |
245 | if (typeID == kCFXMLNodeTypeElement) { | |
246 | if (((CFXMLElementInfo *)CFXMLNodeGetInfoPtr(CFXMLTreeGetNode(tree)))->isEmpty) return; | |
247 | CFStringAppendFormat(str, NULL, CFSTR("</%@>"), CFXMLNodeGetString(CFXMLTreeGetNode(tree))); | |
248 | } else if (typeID == kCFXMLNodeTypeDocumentType) { | |
249 | CFIndex len = CFStringGetLength(str); | |
250 | if (CFStringHasSuffix(str, CFSTR(" ["))) { | |
251 | // There were no in-line DTD elements | |
252 | CFStringDelete(str, CFRangeMake(len-2, 2)); | |
253 | } else { | |
254 | CFStringAppendCString(str, "]", kCFStringEncodingASCII); | |
255 | } | |
256 | CFStringAppendCString(str, ">", kCFStringEncodingASCII); | |
257 | } | |
258 | } |