1 /* 2 * Copyright 2006 The Android Open Source Project 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SkDOM_DEFINED 9 #define SkDOM_DEFINED 10 11 #include "../private/SkTemplates.h" 12 #include "SkArenaAlloc.h" 13 #include "SkScalar.h" 14 #include "SkTypes.h" 15 16 struct SkDOMNode; 17 struct SkDOMAttr; 18 19 class SkDOMParser; 20 class SkStream; 21 class SkXMLParser; 22 23 class SkDOM : public SkNoncopyable { 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(SkStream&); 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[] = nullptr) const; 49 const Node* getNextSibling(const Node*, const char elem[] = nullptr) 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[] = nullptr) 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 67 bool findScalar(const Node* node, const char name[], SkScalar value[]) const { 68 return this->findScalars(node, name, value, 1); 69 } 70 71 bool hasAttr(const Node*, const char name[], const char value[]) const; 72 bool hasS32(const Node*, const char name[], int32_t value) const; 73 bool hasScalar(const Node*, const char name[], SkScalar value) const; 74 bool hasHex(const Node*, const char name[], uint32_t value) const; 75 bool hasBool(const Node*, const char name[], bool value) const; 76 77 class AttrIter { 78 public: 79 AttrIter(const SkDOM&, const Node*); 80 const char* next(const char** value); 81 private: 82 const Attr* fAttr; 83 const Attr* fStop; 84 }; 85 86 private: 87 SkArenaAlloc fAlloc; 88 Node* fRoot; 89 std::unique_ptr<SkDOMParser> fParser; 90 91 typedef SkNoncopyable INHERITED; 92 }; 93 94 #endif 95
