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 "include/core/SkScalar.h" |
12 | #include "include/core/SkTypes.h" |
13 | #include "include/private/SkNoncopyable.h" |
14 | #include "include/private/SkTemplates.h" |
15 | #include "src/core/SkArenaAlloc.h" |
16 | |
17 | struct SkDOMNode; |
18 | struct SkDOMAttr; |
19 | |
20 | class SkDOMParser; |
21 | class SkStream; |
22 | class SkXMLParser; |
23 | |
24 | class SkDOM : public SkNoncopyable { |
25 | public: |
26 | SkDOM(); |
27 | ~SkDOM(); |
28 | |
29 | typedef SkDOMNode Node; |
30 | typedef SkDOMAttr Attr; |
31 | |
32 | /** Returns null on failure |
33 | */ |
34 | const Node* build(SkStream&); |
35 | const Node* copy(const SkDOM& dom, const Node* node); |
36 | |
37 | const Node* getRootNode() const; |
38 | |
39 | SkXMLParser* beginParsing(); |
40 | const Node* finishParsing(); |
41 | |
42 | enum Type { |
43 | kElement_Type, |
44 | kText_Type |
45 | }; |
46 | Type getType(const Node*) const; |
47 | |
48 | const char* getName(const Node*) const; |
49 | const Node* getFirstChild(const Node*, const char elem[] = nullptr) const; |
50 | const Node* getNextSibling(const Node*, const char elem[] = nullptr) const; |
51 | |
52 | const char* findAttr(const Node*, const char attrName[]) const; |
53 | const Attr* getFirstAttr(const Node*) const; |
54 | const Attr* getNextAttr(const Node*, const Attr*) const; |
55 | const char* getAttrName(const Node*, const Attr*) const; |
56 | const char* getAttrValue(const Node*, const Attr*) const; |
57 | |
58 | // helpers for walking children |
59 | int countChildren(const Node* node, const char elem[] = nullptr) const; |
60 | |
61 | // helpers for calling SkParse |
62 | bool findS32(const Node*, const char name[], int32_t* value) const; |
63 | bool findScalars(const Node*, const char name[], SkScalar value[], int count) const; |
64 | bool findHex(const Node*, const char name[], uint32_t* value) const; |
65 | bool findBool(const Node*, const char name[], bool*) const; |
66 | int findList(const Node*, const char name[], const char list[]) const; |
67 | |
68 | bool findScalar(const Node* node, const char name[], SkScalar value[]) const { |
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 SkDOM&, const Node*); |
81 | const char* next(const char** value); |
82 | private: |
83 | const Attr* fAttr; |
84 | const Attr* fStop; |
85 | }; |
86 | |
87 | private: |
88 | SkArenaAlloc fAlloc; |
89 | Node* fRoot; |
90 | std::unique_ptr<SkDOMParser> fParser; |
91 | |
92 | typedef SkNoncopyable INHERITED; |
93 | }; |
94 | |
95 | #endif |
96 | |