|
1 /* |
|
2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
|
3 * All rights reserved. |
|
4 * This component and the accompanying materials are made available |
|
5 * under the terms of "Eclipse Public License v1.0" |
|
6 * which accompanies this distribution, and is available |
|
7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
8 * |
|
9 * Initial Contributors: |
|
10 * Nokia Corporation - initial contribution. |
|
11 * |
|
12 * Contributors: |
|
13 * |
|
14 * Description: Reads selected parts of SDP attribute values. |
|
15 * |
|
16 */ |
|
17 |
|
18 |
|
19 // INCLUDE FILES |
|
20 #include <bt_sock.h> |
|
21 |
|
22 #include "SdpAttributeParser.h" |
|
23 #include "SdpAttributeParser.pan" |
|
24 #include "SdpAttributeNotifier.h" |
|
25 |
|
26 // ============================ MEMBER FUNCTIONS ============================== |
|
27 |
|
28 // ---------------------------------------------------------------------------- |
|
29 // TSdpAttributeParser::TSdpAttributeParser() |
|
30 // Construct a TSdpAttributeParser. |
|
31 // ---------------------------------------------------------------------------- |
|
32 // |
|
33 |
|
34 TSdpAttributeParser::TSdpAttributeParser( |
|
35 TSdpAttributeList& aNodeList, |
|
36 MSdpAttributeNotifier& aObserver |
|
37 ) |
|
38 : iObserver( aObserver ), |
|
39 iNodeList( aNodeList ), |
|
40 iCurrentNodeIndex( 0 ) |
|
41 { |
|
42 // no implementation required |
|
43 } |
|
44 |
|
45 // ---------------------------------------------------------------------------- |
|
46 // TSdpAttributeParser::HasFinished() |
|
47 // Check if parsing processed the whole list. |
|
48 // ---------------------------------------------------------------------------- |
|
49 // |
|
50 TBool TSdpAttributeParser::HasFinished() const |
|
51 { |
|
52 return CurrentNode().iCommand == EFinished; |
|
53 } |
|
54 |
|
55 // ---------------------------------------------------------------------------- |
|
56 // TSdpAttributeParser::VisitAttributeValueL() |
|
57 // Process a data element. |
|
58 // ---------------------------------------------------------------------------- |
|
59 // |
|
60 void TSdpAttributeParser::VisitAttributeValueL( CSdpAttrValue& aValue, |
|
61 TSdpElementType aType ) |
|
62 { |
|
63 switch ( CurrentNode().iCommand ) |
|
64 { |
|
65 case ECheckType: |
|
66 CheckTypeL( aType ); |
|
67 break; |
|
68 |
|
69 case ECheckValue: |
|
70 CheckTypeL( aType ); |
|
71 CheckValueL( aValue ); |
|
72 break; |
|
73 |
|
74 case ECheckEnd: |
|
75 User::Leave( KErrGeneral ); //list element contains too many items |
|
76 break; |
|
77 |
|
78 case ESkip: |
|
79 break; // no checking required |
|
80 |
|
81 case EReadValue: |
|
82 CheckTypeL( aType ); |
|
83 ReadValueL( aValue ); |
|
84 break; |
|
85 |
|
86 case EFinished: |
|
87 User::Leave( KErrGeneral ); // element is after |
|
88 return; // value should have ended |
|
89 |
|
90 default: |
|
91 Panic( ESdpAttributeParserInvalidCommand ); |
|
92 } |
|
93 |
|
94 AdvanceL(); |
|
95 } |
|
96 |
|
97 // ---------------------------------------------------------------------------- |
|
98 // TSdpAttributeParser::StartListL() |
|
99 // Process the start of a data element list. |
|
100 // ---------------------------------------------------------------------------- |
|
101 // |
|
102 void TSdpAttributeParser::StartListL( CSdpAttrValueList& /*aList*/ ) |
|
103 { |
|
104 // no checks done here |
|
105 } |
|
106 |
|
107 // ---------------------------------------------------------------------------- |
|
108 // TSdpAttributeParser::EndListL() |
|
109 // Process the end of a data element list. |
|
110 // ---------------------------------------------------------------------------- |
|
111 // |
|
112 void TSdpAttributeParser::EndListL() |
|
113 { |
|
114 // check we are at the end of a list |
|
115 if ( CurrentNode().iCommand != ECheckEnd ) |
|
116 { |
|
117 User::Leave( KErrGeneral ); |
|
118 } |
|
119 |
|
120 AdvanceL(); |
|
121 } |
|
122 |
|
123 // ---------------------------------------------------------------------------- |
|
124 // TSdpAttributeParser::CheckTypeL() |
|
125 // Check the type of the current node is the same as the specified type. |
|
126 // ---------------------------------------------------------------------------- |
|
127 // |
|
128 void TSdpAttributeParser::CheckTypeL( TSdpElementType aElementType ) const |
|
129 { |
|
130 if ( CurrentNode().iType != aElementType ) |
|
131 { |
|
132 User::Leave( KErrGeneral ); |
|
133 } |
|
134 } |
|
135 |
|
136 // ---------------------------------------------------------------------------- |
|
137 // TSdpAttributeParser::CheckValueL() |
|
138 // Check the value of the current node is the same as the specified type. |
|
139 // ---------------------------------------------------------------------------- |
|
140 // |
|
141 void TSdpAttributeParser::CheckValueL( CSdpAttrValue& aValue ) const |
|
142 { |
|
143 switch ( aValue.Type() ) |
|
144 { |
|
145 case ETypeNil: |
|
146 Panic( ESdpAttributeParserNoValue ); |
|
147 break; |
|
148 |
|
149 case ETypeUint: |
|
150 if ( aValue.Uint() != ( TUint )CurrentNode().iValue ) |
|
151 { |
|
152 User::Leave( KErrArgument ); |
|
153 } |
|
154 break; |
|
155 |
|
156 case ETypeInt: |
|
157 if ( aValue.Int() != CurrentNode().iValue ) |
|
158 { |
|
159 User::Leave( KErrArgument ); |
|
160 } |
|
161 break; |
|
162 |
|
163 case ETypeBoolean: |
|
164 if ( aValue.Bool() != CurrentNode().iValue ) |
|
165 { |
|
166 User::Leave( KErrArgument ); |
|
167 } |
|
168 break; |
|
169 |
|
170 case ETypeUUID: |
|
171 if ( aValue.UUID() != TUUID( CurrentNode().iValue ) ) |
|
172 { |
|
173 User::Leave( KErrArgument ); |
|
174 } |
|
175 break; |
|
176 |
|
177 // these are lists, so have to check contents |
|
178 case ETypeDES: |
|
179 case ETypeDEA: |
|
180 Panic( ESdpAttributeParserValueIsList ); |
|
181 break; |
|
182 |
|
183 // these aren't supported - use EReadValue and leave on error |
|
184 //case ETypeString: |
|
185 //case ETypeURL: |
|
186 //case ETypeEncoded: |
|
187 default: |
|
188 Panic( ESdpAttributeParserValueTypeUnsupported ); |
|
189 break; |
|
190 } |
|
191 } |
|
192 |
|
193 // ---------------------------------------------------------------------------- |
|
194 // TSdpAttributeParser::ReadValueL() |
|
195 // Pass the data element value to the observer. |
|
196 // ---------------------------------------------------------------------------- |
|
197 // |
|
198 void TSdpAttributeParser::ReadValueL( CSdpAttrValue& aValue ) const |
|
199 { |
|
200 iObserver.FoundElementL( CurrentNode().iValue, aValue ); |
|
201 } |
|
202 |
|
203 // ---------------------------------------------------------------------------- |
|
204 // TSdpAttributeParser::CurrentNode() |
|
205 // Get the current node. |
|
206 // ---------------------------------------------------------------------------- |
|
207 // |
|
208 const TSdpAttributeParser::SSdpAttributeNode& TSdpAttributeParser |
|
209 ::CurrentNode() const |
|
210 { |
|
211 return iNodeList[iCurrentNodeIndex]; |
|
212 } |
|
213 |
|
214 // ---------------------------------------------------------------------------- |
|
215 // TSdpAttributeParser::AdvanceL() |
|
216 // Advance to the next node. |
|
217 // ---------------------------------------------------------------------------- |
|
218 // |
|
219 void TSdpAttributeParser::AdvanceL() |
|
220 { |
|
221 // check not at end |
|
222 if ( CurrentNode().iCommand == EFinished ) |
|
223 { |
|
224 User::Leave( KErrEof ); |
|
225 } |
|
226 |
|
227 // move to the next item |
|
228 ++iCurrentNodeIndex; |
|
229 } |
|
230 |
|
231 // End of File |