epoger@google.com | ec3ed6a | 2011-07-28 14:26:00 +0000 | [diff] [blame] | 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 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 8 | |
| 9 | #include "SkDOM.h" |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 10 | #include "SkStream.h" |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 11 | #include "SkXMLParser.h" |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 12 | #include "SkXMLWriter.h" |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 13 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 14 | bool SkXMLParser::parse(const SkDOM& dom, const SkDOMNode* node) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 15 | const char* elemName = dom.getName(node); |
| 16 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 17 | if (this->startElement(elemName)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 18 | return false; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 19 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 20 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 21 | SkDOM::AttrIter iter(dom, node); |
| 22 | const char* name, *value; |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 23 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 24 | while ((name = iter.next(&value)) != nullptr) { |
| 25 | if (this->addAttribute(name, value)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 26 | return false; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 27 | } |
| 28 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 29 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 30 | if ((node = dom.getFirstChild(node)) != nullptr) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 31 | do { |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 32 | if (!this->parse(dom, node)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 33 | return false; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 34 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 35 | } while ((node = dom.getNextSibling(node)) != nullptr); |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 36 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 37 | return !this->endElement(elemName); |
| 38 | } |
| 39 | |
| 40 | ///////////////////////////////////////////////////////////////////////// |
| 41 | |
| 42 | struct SkDOMAttr { |
| 43 | const char* fName; |
| 44 | const char* fValue; |
| 45 | }; |
| 46 | |
| 47 | struct SkDOMNode { |
| 48 | const char* fName; |
| 49 | SkDOMNode* fFirstChild; |
| 50 | SkDOMNode* fNextSibling; |
| 51 | uint16_t fAttrCount; |
| 52 | uint8_t fType; |
| 53 | uint8_t fPad; |
| 54 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 55 | const SkDOMAttr* attrs() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 56 | return (const SkDOMAttr*)(this + 1); |
| 57 | } |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 58 | |
| 59 | SkDOMAttr* attrs() { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 60 | return (SkDOMAttr*)(this + 1); |
| 61 | } |
| 62 | }; |
| 63 | |
| 64 | ///////////////////////////////////////////////////////////////////////// |
| 65 | |
| 66 | #define kMinChunkSize 512 |
| 67 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 68 | SkDOM::SkDOM() : fAlloc(kMinChunkSize), fRoot(nullptr) {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 69 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 70 | SkDOM::~SkDOM() {} |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 71 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 72 | const SkDOM::Node* SkDOM::getRootNode() const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 73 | return fRoot; |
| 74 | } |
| 75 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 76 | const SkDOM::Node* SkDOM::getFirstChild(const Node* node, const char name[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 77 | SkASSERT(node); |
| 78 | const Node* child = node->fFirstChild; |
| 79 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 80 | if (name) { |
| 81 | for (; child != nullptr; child = child->fNextSibling) { |
| 82 | if (!strcmp(name, child->fName)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 83 | break; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 84 | } |
| 85 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 86 | } |
| 87 | return child; |
| 88 | } |
| 89 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 90 | const SkDOM::Node* SkDOM::getNextSibling(const Node* node, const char name[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 91 | SkASSERT(node); |
| 92 | const Node* sibling = node->fNextSibling; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 93 | if (name) { |
| 94 | for (; sibling != nullptr; sibling = sibling->fNextSibling) { |
| 95 | if (!strcmp(name, sibling->fName)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 96 | break; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 97 | } |
| 98 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 99 | } |
| 100 | return sibling; |
| 101 | } |
| 102 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 103 | SkDOM::Type SkDOM::getType(const Node* node) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 104 | SkASSERT(node); |
| 105 | return (Type)node->fType; |
| 106 | } |
| 107 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 108 | const char* SkDOM::getName(const Node* node) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 109 | SkASSERT(node); |
| 110 | return node->fName; |
| 111 | } |
| 112 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 113 | const char* SkDOM::findAttr(const Node* node, const char name[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 114 | SkASSERT(node); |
| 115 | const Attr* attr = node->attrs(); |
| 116 | const Attr* stop = attr + node->fAttrCount; |
| 117 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 118 | while (attr < stop) { |
| 119 | if (!strcmp(attr->fName, name)) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 120 | return attr->fValue; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 121 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 122 | attr += 1; |
| 123 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 124 | return nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 125 | } |
| 126 | |
| 127 | ///////////////////////////////////////////////////////////////////////////////////// |
| 128 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 129 | const SkDOM::Attr* SkDOM::getFirstAttr(const Node* node) const { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 130 | return node->fAttrCount ? node->attrs() : nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 131 | } |
| 132 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 133 | const SkDOM::Attr* SkDOM::getNextAttr(const Node* node, const Attr* attr) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 134 | SkASSERT(node); |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 135 | if (attr == nullptr) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 136 | return nullptr; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 137 | } |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 138 | return (attr - node->attrs() + 1) < node->fAttrCount ? attr + 1 : nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 139 | } |
| 140 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 141 | const char* SkDOM::getAttrName(const Node* node, const Attr* attr) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 142 | SkASSERT(node); |
| 143 | SkASSERT(attr); |
| 144 | return attr->fName; |
| 145 | } |
| 146 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 147 | const char* SkDOM::getAttrValue(const Node* node, const Attr* attr) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 148 | SkASSERT(node); |
| 149 | SkASSERT(attr); |
| 150 | return attr->fValue; |
| 151 | } |
| 152 | |
| 153 | ///////////////////////////////////////////////////////////////////////////////////// |
| 154 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 155 | SkDOM::AttrIter::AttrIter(const SkDOM&, const SkDOM::Node* node) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 156 | SkASSERT(node); |
| 157 | fAttr = node->attrs(); |
| 158 | fStop = fAttr + node->fAttrCount; |
| 159 | } |
| 160 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 161 | const char* SkDOM::AttrIter::next(const char** value) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 162 | const char* name = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 163 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 164 | if (fAttr < fStop) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 165 | name = fAttr->fName; |
| 166 | if (value) |
| 167 | *value = fAttr->fValue; |
| 168 | fAttr += 1; |
| 169 | } |
| 170 | return name; |
| 171 | } |
| 172 | |
| 173 | ////////////////////////////////////////////////////////////////////////////// |
| 174 | |
| 175 | #include "SkXMLParser.h" |
| 176 | #include "SkTDArray.h" |
| 177 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 178 | static char* dupstr(SkChunkAlloc* chunk, const char src[]) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 179 | SkASSERT(chunk && src); |
| 180 | size_t len = strlen(src); |
| 181 | char* dst = (char*)chunk->alloc(len + 1, SkChunkAlloc::kThrow_AllocFailType); |
| 182 | memcpy(dst, src, len + 1); |
| 183 | return dst; |
| 184 | } |
| 185 | |
| 186 | class SkDOMParser : public SkXMLParser { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 187 | public: |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 188 | SkDOMParser(SkChunkAlloc* chunk) : SkXMLParser(&fParserError), fAlloc(chunk) { |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 189 | fAlloc->reset(); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 190 | fRoot = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 191 | fLevel = 0; |
| 192 | fNeedToFlush = true; |
| 193 | } |
| 194 | SkDOM::Node* getRoot() const { return fRoot; } |
| 195 | SkXMLParserError fParserError; |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 196 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 197 | protected: |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 198 | void flushAttributes() { |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 199 | SkASSERT(fLevel > 0); |
| 200 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 201 | int attrCount = fAttrs.count(); |
| 202 | |
| 203 | SkDOM::Node* node = (SkDOM::Node*)fAlloc->alloc(sizeof(SkDOM::Node) + attrCount * sizeof(SkDOM::Attr), |
| 204 | SkChunkAlloc::kThrow_AllocFailType); |
| 205 | |
| 206 | node->fName = fElemName; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 207 | node->fFirstChild = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 208 | node->fAttrCount = SkToU16(attrCount); |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 209 | node->fType = fElemType; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 210 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 211 | if (fRoot == nullptr) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 212 | node->fNextSibling = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 213 | fRoot = node; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 214 | } else { // this adds siblings in reverse order. gets corrected in onEndElement() |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 215 | SkDOM::Node* parent = fParentStack.top(); |
| 216 | SkASSERT(fRoot && parent); |
| 217 | node->fNextSibling = parent->fFirstChild; |
| 218 | parent->fFirstChild = node; |
| 219 | } |
| 220 | *fParentStack.push() = node; |
| 221 | |
mtklein | 067e90e | 2015-12-10 07:42:47 -0800 | [diff] [blame] | 222 | sk_careful_memcpy(node->attrs(), fAttrs.begin(), attrCount * sizeof(SkDOM::Attr)); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 223 | fAttrs.reset(); |
| 224 | |
| 225 | } |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 226 | |
| 227 | bool onStartElement(const char elem[]) override { |
| 228 | this->startCommon(elem, SkDOM::kElement_Type); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 229 | return false; |
| 230 | } |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 231 | |
| 232 | bool onAddAttribute(const char name[], const char value[]) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 233 | SkDOM::Attr* attr = fAttrs.append(); |
| 234 | attr->fName = dupstr(fAlloc, name); |
| 235 | attr->fValue = dupstr(fAlloc, value); |
| 236 | return false; |
| 237 | } |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 238 | |
| 239 | bool onEndElement(const char elem[]) override { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 240 | --fLevel; |
| 241 | if (fNeedToFlush) |
| 242 | this->flushAttributes(); |
| 243 | fNeedToFlush = false; |
| 244 | |
| 245 | SkDOM::Node* parent; |
| 246 | |
| 247 | fParentStack.pop(&parent); |
| 248 | |
| 249 | SkDOM::Node* child = parent->fFirstChild; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 250 | SkDOM::Node* prev = nullptr; |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 251 | while (child) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 252 | SkDOM::Node* next = child->fNextSibling; |
| 253 | child->fNextSibling = prev; |
| 254 | prev = child; |
| 255 | child = next; |
| 256 | } |
| 257 | parent->fFirstChild = prev; |
| 258 | return false; |
| 259 | } |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 260 | |
| 261 | bool onText(const char text[], int len) override { |
| 262 | SkString str(text, len); |
| 263 | this->startCommon(str.c_str(), SkDOM::kText_Type); |
| 264 | this->SkDOMParser::onEndElement(str.c_str()); |
| 265 | |
| 266 | return false; |
| 267 | } |
| 268 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 269 | private: |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 270 | void startCommon(const char elem[], SkDOM::Type type) { |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 271 | if (fLevel > 0 && fNeedToFlush) { |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 272 | this->flushAttributes(); |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 273 | } |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 274 | fNeedToFlush = true; |
| 275 | fElemName = dupstr(fAlloc, elem); |
| 276 | fElemType = type; |
| 277 | ++fLevel; |
| 278 | } |
| 279 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 280 | SkTDArray<SkDOM::Node*> fParentStack; |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 281 | SkChunkAlloc* fAlloc; |
| 282 | SkDOM::Node* fRoot; |
| 283 | bool fNeedToFlush; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 284 | |
| 285 | // state needed for flushAttributes() |
| 286 | SkTDArray<SkDOM::Attr> fAttrs; |
| 287 | char* fElemName; |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 288 | SkDOM::Type fElemType; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 289 | int fLevel; |
| 290 | }; |
| 291 | |
fmalita | 7445e86 | 2016-07-14 19:14:06 -0700 | [diff] [blame] | 292 | const SkDOM::Node* SkDOM::build(SkStream& docStream) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 293 | SkDOMParser parser(&fAlloc); |
fmalita | 7445e86 | 2016-07-14 19:14:06 -0700 | [diff] [blame] | 294 | if (!parser.parse(docStream)) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 295 | { |
| 296 | SkDEBUGCODE(SkDebugf("xml parse error, line %d\n", parser.fParserError.getLineNumber());) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 297 | fRoot = nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 298 | fAlloc.reset(); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 299 | return nullptr; |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 300 | } |
| 301 | fRoot = parser.getRoot(); |
| 302 | return fRoot; |
| 303 | } |
| 304 | |
| 305 | /////////////////////////////////////////////////////////////////////////// |
| 306 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 307 | static void walk_dom(const SkDOM& dom, const SkDOM::Node* node, SkXMLParser* parser) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 308 | const char* elem = dom.getName(node); |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 309 | if (dom.getType(node) == SkDOM::kText_Type) { |
| 310 | SkASSERT(dom.countChildren(node) == 0); |
| 311 | parser->text(elem, SkToInt(strlen(elem))); |
| 312 | return; |
| 313 | } |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 314 | |
| 315 | parser->startElement(elem); |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 316 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 317 | SkDOM::AttrIter iter(dom, node); |
| 318 | const char* name; |
| 319 | const char* value; |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 320 | while ((name = iter.next(&value)) != nullptr) |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 321 | parser->addAttribute(name, value); |
| 322 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 323 | node = dom.getFirstChild(node, nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 324 | while (node) |
| 325 | { |
| 326 | walk_dom(dom, node, parser); |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 327 | node = dom.getNextSibling(node, nullptr); |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 328 | } |
| 329 | |
| 330 | parser->endElement(elem); |
| 331 | } |
| 332 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 333 | const SkDOM::Node* SkDOM::copy(const SkDOM& dom, const SkDOM::Node* node) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 334 | SkDOMParser parser(&fAlloc); |
| 335 | |
| 336 | walk_dom(dom, node, &parser); |
| 337 | |
| 338 | fRoot = parser.getRoot(); |
| 339 | return fRoot; |
| 340 | } |
| 341 | |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 342 | SkXMLParser* SkDOM::beginParsing() { |
| 343 | SkASSERT(!fParser); |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 344 | fParser.reset(new SkDOMParser(&fAlloc)); |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 345 | |
| 346 | return fParser.get(); |
| 347 | } |
| 348 | |
| 349 | const SkDOM::Node* SkDOM::finishParsing() { |
| 350 | SkASSERT(fParser); |
| 351 | fRoot = fParser->getRoot(); |
mtklein | 852f15d | 2016-03-17 10:51:27 -0700 | [diff] [blame] | 352 | fParser.reset(); |
fmalita | 7a04869 | 2015-02-20 13:54:40 -0800 | [diff] [blame] | 353 | |
| 354 | return fRoot; |
| 355 | } |
| 356 | |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 357 | ////////////////////////////////////////////////////////////////////////// |
| 358 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 359 | int SkDOM::countChildren(const Node* node, const char elem[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 360 | int count = 0; |
| 361 | |
| 362 | node = this->getFirstChild(node, elem); |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 363 | while (node) { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 364 | count += 1; |
| 365 | node = this->getNextSibling(node, elem); |
| 366 | } |
| 367 | return count; |
| 368 | } |
| 369 | |
| 370 | ////////////////////////////////////////////////////////////////////////// |
| 371 | |
| 372 | #include "SkParse.h" |
| 373 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 374 | bool SkDOM::findS32(const Node* node, const char name[], int32_t* value) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 375 | const char* vstr = this->findAttr(node, name); |
| 376 | return vstr && SkParse::FindS32(vstr, value); |
| 377 | } |
| 378 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 379 | bool SkDOM::findScalars(const Node* node, const char name[], SkScalar value[], int count) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 380 | const char* vstr = this->findAttr(node, name); |
| 381 | return vstr && SkParse::FindScalars(vstr, value, count); |
| 382 | } |
| 383 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 384 | bool SkDOM::findHex(const Node* node, const char name[], uint32_t* value) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 385 | const char* vstr = this->findAttr(node, name); |
| 386 | return vstr && SkParse::FindHex(vstr, value); |
| 387 | } |
| 388 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 389 | bool SkDOM::findBool(const Node* node, const char name[], bool* value) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 390 | const char* vstr = this->findAttr(node, name); |
| 391 | return vstr && SkParse::FindBool(vstr, value); |
| 392 | } |
| 393 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 394 | int SkDOM::findList(const Node* node, const char name[], const char list[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 395 | const char* vstr = this->findAttr(node, name); |
| 396 | return vstr ? SkParse::FindList(vstr, list) : -1; |
| 397 | } |
| 398 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 399 | bool SkDOM::hasAttr(const Node* node, const char name[], const char value[]) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 400 | const char* vstr = this->findAttr(node, name); |
| 401 | return vstr && !strcmp(vstr, value); |
| 402 | } |
| 403 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 404 | bool SkDOM::hasS32(const Node* node, const char name[], int32_t target) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 405 | const char* vstr = this->findAttr(node, name); |
| 406 | int32_t value; |
| 407 | return vstr && SkParse::FindS32(vstr, &value) && value == target; |
| 408 | } |
| 409 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 410 | bool SkDOM::hasScalar(const Node* node, const char name[], SkScalar target) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 411 | const char* vstr = this->findAttr(node, name); |
| 412 | SkScalar value; |
| 413 | return vstr && SkParse::FindScalar(vstr, &value) && value == target; |
| 414 | } |
| 415 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 416 | bool SkDOM::hasHex(const Node* node, const char name[], uint32_t target) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 417 | const char* vstr = this->findAttr(node, name); |
| 418 | uint32_t value; |
| 419 | return vstr && SkParse::FindHex(vstr, &value) && value == target; |
| 420 | } |
| 421 | |
Mike Reed | c3063e5 | 2017-01-07 16:16:02 -0500 | [diff] [blame] | 422 | bool SkDOM::hasBool(const Node* node, const char name[], bool target) const { |
reed@android.com | 8a1c16f | 2008-12-17 15:59:43 +0000 | [diff] [blame] | 423 | const char* vstr = this->findAttr(node, name); |
| 424 | bool value; |
| 425 | return vstr && SkParse::FindBool(vstr, &value) && value == target; |
| 426 | } |