blob: 1ac11794059d6b3246ca66973be9e53b6874ba68 [file] [log] [blame]
/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/xml/SkXMLWriter.h"
#include "include/core/SkStream.h"
#include "include/private/base/SkTo.h"
SkXMLWriter::SkXMLWriter(bool doEscapeMarkup) : fDoEscapeMarkup(doEscapeMarkup)
{}
SkXMLWriter::~SkXMLWriter() {
SkASSERT(fElems.empty());
}
void SkXMLWriter::flush() {
while (!fElems.empty()) {
this->endElement();
}
}
void SkXMLWriter::addAttribute(const char name[], const char value[]) {
this->addAttributeLen(name, value, strlen(value));
}
void SkXMLWriter::addS32Attribute(const char name[], int32_t value) {
SkString tmp;
tmp.appendS32(value);
this->addAttribute(name, tmp.c_str());
}
void SkXMLWriter::addHexAttribute(const char name[], uint32_t value, int minDigits) {
SkString tmp("0x");
tmp.appendHex(value, minDigits);
this->addAttribute(name, tmp.c_str());
}
void SkXMLWriter::addScalarAttribute(const char name[], SkScalar value) {
SkString tmp;
tmp.appendScalar(value);
this->addAttribute(name, tmp.c_str());
}
void SkXMLWriter::addText(const char text[], size_t length) {
if (fElems.empty()) {
return;
}
this->onAddText(text, length);
fElems.back()->fHasText = true;
}
void SkXMLWriter::doEnd(Elem* elem) {
delete elem;
}
bool SkXMLWriter::doStart(const char name[], size_t length) {
int level = fElems.size();
bool firstChild = level > 0 && !fElems[level-1]->fHasChildren;
if (firstChild) {
fElems[level-1]->fHasChildren = true;
}
Elem** elem = fElems.append();
*elem = new Elem(name, length);
return firstChild;
}
SkXMLWriter::Elem* SkXMLWriter::getEnd() {
Elem* elem = fElems.back();
fElems.pop_back();
return elem;
}
const char* SkXMLWriter::getHeader() {
static const char gHeader[] = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>";
return gHeader;
}
void SkXMLWriter::startElement(const char name[]) {
this->startElementLen(name, strlen(name));
}
static const char* escape_char(char c, char storage[2]) {
static const char* gEscapeChars[] = {
"<&lt;",
">&gt;",
//"\"&quot;",
//"'&apos;",
"&&amp;"
};
const char** array = gEscapeChars;
for (unsigned i = 0; i < std::size(gEscapeChars); i++) {
if (array[i][0] == c) {
return &array[i][1];
}
}
storage[0] = c;
storage[1] = 0;
return storage;
}
static size_t escape_markup(char dst[], const char src[], size_t length) {
size_t extra = 0;
const char* stop = src + length;
while (src < stop) {
char orig[2];
const char* seq = escape_char(*src, orig);
size_t seqSize = strlen(seq);
if (dst) {
memcpy(dst, seq, seqSize);
dst += seqSize;
}
// now record the extra size needed
extra += seqSize - 1; // minus one to subtract the original char
// bump to the next src char
src += 1;
}
return extra;
}
void SkXMLWriter::addAttributeLen(const char name[], const char value[], size_t length) {
SkString valueStr;
if (fDoEscapeMarkup) {
size_t extra = escape_markup(nullptr, value, length);
if (extra) {
valueStr.resize(length + extra);
(void)escape_markup(valueStr.data(), value, length);
value = valueStr.c_str();
length += extra;
}
}
this->onAddAttributeLen(name, value, length);
}
void SkXMLWriter::startElementLen(const char elem[], size_t length) {
this->onStartElementLen(elem, length);
}
////////////////////////////////////////////////////////////////////////////////////////
static void write_dom(const SkDOM& dom, const SkDOM::Node* node, SkXMLWriter* w, bool skipRoot) {
if (!skipRoot) {
const char* elem = dom.getName(node);
if (dom.getType(node) == SkDOM::kText_Type) {
SkASSERT(dom.countChildren(node) == 0);
w->addText(elem, strlen(elem));
return;
}
w->startElement(elem);
SkDOM::AttrIter iter(dom, node);
const char* name;
const char* value;
while ((name = iter.next(&value)) != nullptr) {
w->addAttribute(name, value);
}
}
node = dom.getFirstChild(node, nullptr);
while (node) {
write_dom(dom, node, w, false);
node = dom.getNextSibling(node, nullptr);
}
if (!skipRoot) {
w->endElement();
}
}
void SkXMLWriter::writeDOM(const SkDOM& dom, const SkDOM::Node* node, bool skipRoot) {
if (node) {
write_dom(dom, node, this, skipRoot);
}
}
void SkXMLWriter::writeHeader()
{}
// SkXMLStreamWriter
SkXMLStreamWriter::SkXMLStreamWriter(SkWStream* stream, uint32_t flags)
: fStream(*stream)
, fFlags(flags) {}
SkXMLStreamWriter::~SkXMLStreamWriter() {
this->flush();
}
void SkXMLStreamWriter::onAddAttributeLen(const char name[], const char value[], size_t length) {
SkASSERT(!fElems.back()->fHasChildren && !fElems.back()->fHasText);
fStream.writeText(" ");
fStream.writeText(name);
fStream.writeText("=\"");
fStream.write(value, length);
fStream.writeText("\"");
}
void SkXMLStreamWriter::onAddText(const char text[], size_t length) {
Elem* elem = fElems.back();
if (!elem->fHasChildren && !elem->fHasText) {
fStream.writeText(">");
this->newline();
}
this->tab(fElems.size() + 1);
fStream.write(text, length);
this->newline();
}
void SkXMLStreamWriter::onEndElement() {
Elem* elem = getEnd();
if (elem->fHasChildren || elem->fHasText) {
this->tab(fElems.size());
fStream.writeText("</");
fStream.writeText(elem->fName.c_str());
fStream.writeText(">");
} else {
fStream.writeText("/>");
}
this->newline();
doEnd(elem);
}
void SkXMLStreamWriter::onStartElementLen(const char name[], size_t length) {
int level = fElems.size();
if (this->doStart(name, length)) {
// the first child, need to close with >
fStream.writeText(">");
this->newline();
}
this->tab(level);
fStream.writeText("<");
fStream.write(name, length);
}
void SkXMLStreamWriter::writeHeader() {
const char* header = getHeader();
fStream.write(header, strlen(header));
this->newline();
}
void SkXMLStreamWriter::newline() {
if (!(fFlags & kNoPretty_Flag)) {
fStream.newline();
}
}
void SkXMLStreamWriter::tab(int level) {
if (!(fFlags & kNoPretty_Flag)) {
for (int i = 0; i < level; i++) {
fStream.writeText("\t");
}
}
}
////////////////////////////////////////////////////////////////////////////////////////////////
#include "src/xml/SkXMLParser.h"
SkXMLParserWriter::SkXMLParserWriter(SkXMLParser* parser)
: SkXMLWriter(false), fParser(*parser)
{
}
SkXMLParserWriter::~SkXMLParserWriter() {
this->flush();
}
void SkXMLParserWriter::onAddAttributeLen(const char name[], const char value[], size_t length) {
SkASSERT(fElems.empty() || (!fElems.back()->fHasChildren && !fElems.back()->fHasText));
SkString str(value, length);
fParser.addAttribute(name, str.c_str());
}
void SkXMLParserWriter::onAddText(const char text[], size_t length) {
fParser.text(text, SkToInt(length));
}
void SkXMLParserWriter::onEndElement() {
Elem* elem = this->getEnd();
fParser.endElement(elem->fName.c_str());
this->doEnd(elem);
}
void SkXMLParserWriter::onStartElementLen(const char name[], size_t length) {
(void)this->doStart(name, length);
SkString str(name, length);
fParser.startElement(str.c_str());
}