1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SkDOM_DEFINED 18 #define SkDOM_DEFINED 19 20 #include "SkChunkAlloc.h" 21 #include "SkMath.h" 22 #include "SkScalar.h" 23 #include "SkTemplates.h" 24 25 struct SkDOMNode; 26 struct SkDOMAttr; 27 28 class SkDOM { 29 public: 30 SkDOM(); 31 ~SkDOM(); 32 33 typedef SkDOMNode Node; 34 typedef SkDOMAttr Attr; 35 36 /** Returns null on failure 37 */ 38 const Node* build(const char doc[], size_t len); 39 const Node* copy(const SkDOM& dom, const Node* node); 40 41 const Node* getRootNode() const; 42 43 enum Type { 44 kElement_Type, 45 kText_Type 46 }; 47 Type getType(const Node*) const; 48 49 const char* getName(const Node*) const; 50 const Node* getFirstChild(const Node*, const char elem[] = NULL) const; 51 const Node* getNextSibling(const Node*, const char elem[] = NULL) const; 52 53 const char* findAttr(const Node*, const char attrName[]) const; 54 const Attr* getFirstAttr(const Node*) const; 55 const Attr* getNextAttr(const Node*, const Attr*) const; 56 const char* getAttrName(const Node*, const Attr*) const; 57 const char* getAttrValue(const Node*, const Attr*) const; 58 59 // helpers for walking children 60 int countChildren(const Node* node, const char elem[] = NULL) const; 61 62 // helpers for calling SkParse 63 bool findS32(const Node*, const char name[], int32_t* value) const; 64 bool findScalars(const Node*, const char name[], SkScalar value[], int count) const; 65 bool findHex(const Node*, const char name[], uint32_t* value) const; 66 bool findBool(const Node*, const char name[], bool*) const; 67 int findList(const Node*, const char name[], const char list[]) const; 68 69 bool findScalar(const Node* node, const char name[], SkScalar value[]) const 70 { 71 return this->findScalars(node, name, value, 1); 72 } 73 74 bool hasAttr(const Node*, const char name[], const char value[]) const; 75 bool hasS32(const Node*, const char name[], int32_t value) const; 76 bool hasScalar(const Node*, const char name[], SkScalar value) const; 77 bool hasHex(const Node*, const char name[], uint32_t value) const; 78 bool hasBool(const Node*, const char name[], bool value) const; 79 80 class AttrIter { 81 public: 82 AttrIter(const class SkDOM&, const Node*); 83 const char* next(const char** value); 84 private: 85 const Attr* fAttr; 86 const Attr* fStop; 87 }; 88 89 SkDEBUGCODE(void dump(const Node* node = NULL, int tabLevel = 0) const;) 90 SkDEBUGCODE(static void UnitTest();) 91 92 private: 93 SkChunkAlloc fAlloc; 94 Node* fRoot; 95 friend class AttrIter; 96 friend class SkDOMParser; 97 }; 98 99 #endif 100 101
