1 2 /* 3 * Copyright 2006 The Android Open Source Project 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 #ifndef SkDOM_DEFINED 11 #define SkDOM_DEFINED 12 13 #include "../private/SkTemplates.h" 14 #include "SkChunkAlloc.h" 15 #include "SkScalar.h" 16 17 struct SkDOMNode; 18 struct SkDOMAttr; 19 20 class SkDOMParser; 21 class SkXMLParser; 22 23 class SkDOM { 24 public: 25 SkDOM(); 26 ~SkDOM(); 27 28 typedef SkDOMNode Node; 29 typedef SkDOMAttr Attr; 30 31 /** Returns null on failure 32 */ 33 const Node* build(const char doc[], size_t len); 34 const Node* copy(const SkDOM& dom, const Node* node); 35 36 const Node* getRootNode() const; 37 38 SkXMLParser* beginParsing(); 39 const Node* finishParsing(); 40 41 enum Type { 42 kElement_Type, 43 kText_Type 44 }; 45 Type getType(const Node*) const; 46 47 const char* getName(const Node*) const; 48 const Node* getFirstChild(const Node*, const char elem[] = NULL) const; 49 const Node* getNextSibling(const Node*, const char elem[] = NULL) const; 50 51 const char* findAttr(const Node*, const char attrName[]) const; 52 const Attr* getFirstAttr(const Node*) const; 53 const Attr* getNextAttr(const Node*, const Attr*) const; 54 const char* getAttrName(const Node*, const Attr*) const; 55 const char* getAttrValue(const Node*, const Attr*) const; 56 57 // helpers for walking children 58 int countChildren(const Node* node, const char elem[] = NULL) const; 59 60 // helpers for calling SkParse 61 bool findS32(const Node*, const char name[], int32_t* value) const; 62 bool findScalars(const Node*, const char name[], SkScalar value[], int count) const; 63 bool findHex(const Node*, const char name[], uint32_t* value) const; 64 bool findBool(const Node*, const char name[], bool*) const; 65 int findList(const Node*, const char name[], const char list[]) const; 66 findScalar(const Node * node,const char name[],SkScalar value[])67 bool findScalar(const Node* node, const char name[], SkScalar value[]) const 68 { 69 return this->findScalars(node, name, value, 1); 70 } 71 72 bool hasAttr(const Node*, const char name[], const char value[]) const; 73 bool hasS32(const Node*, const char name[], int32_t value) const; 74 bool hasScalar(const Node*, const char name[], SkScalar value) const; 75 bool hasHex(const Node*, const char name[], uint32_t value) const; 76 bool hasBool(const Node*, const char name[], bool value) const; 77 78 class AttrIter { 79 public: 80 AttrIter(const class SkDOM&, const Node*); 81 const char* next(const char** value); 82 private: 83 const Attr* fAttr; 84 const Attr* fStop; 85 }; 86 87 SkDEBUGCODE(void dump(const Node* node = NULL, int tabLevel = 0) const;) 88 SkDEBUGCODE(static void UnitTest();) 89 90 private: 91 SkChunkAlloc fAlloc; 92 Node* fRoot; 93 SkAutoTDelete<SkDOMParser> fParser; 94 95 friend class AttrIter; 96 friend class SkDOMParser; 97 }; 98 99 #endif 100