diff options
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/xmllite/xmlelement.cpp')
-rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/xmllite/xmlelement.cpp | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/xmllite/xmlelement.cpp b/kopete/protocols/jabber/jingle/libjingle/talk/xmllite/xmlelement.cpp new file mode 100644 index 00000000..de0ccddb --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/xmllite/xmlelement.cpp @@ -0,0 +1,491 @@ +/* + * libjingle + * Copyright 2004--2005, Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO + * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <string> +#include <iostream> +#include <vector> +#include <sstream> + +#include "talk/base/common.h" +#include "talk/xmllite/xmlelement.h" +#include "talk/xmllite/qname.h" +#include "talk/xmllite/xmlparser.h" +#include "talk/xmllite/xmlbuilder.h" +#include "talk/xmllite/xmlprinter.h" +#include "talk/xmllite/xmlconstants.h" + +#define new TRACK_NEW + +namespace buzz { + +const TQName TQN_EMPTY(true, STR_EMPTY, STR_EMPTY); +const TQName TQN_XMLNS(true, STR_EMPTY, STR_XMLNS); + + +XmlChild::~XmlChild() { +} + +bool +XmlText::IsTextImpl() const { + return true; +} + +XmlElement * +XmlText::AsElementImpl() const { + return NULL; +} + +XmlText * +XmlText::AsTextImpl() const { + return const_cast<XmlText *>(this); +} + +void +XmlText::SetText(const std::string & text) { + text_ = text; +} + +void +XmlText::AddParsedText(const char * buf, int len) { + text_.append(buf, len); +} + +void +XmlText::AddText(const std::string & text) { + text_ += text; +} + +XmlText::~XmlText() { +} + +XmlElement::XmlElement(const TQName & name) : + name_(name), + pFirstAttr_(NULL), + pLastAttr_(NULL), + pFirstChild_(NULL), + pLastChild_(NULL) { +} + +XmlElement::XmlElement(const XmlElement & elt) : + XmlChild(), + name_(elt.name_), + pFirstAttr_(NULL), + pLastAttr_(NULL), + pFirstChild_(NULL), + pLastChild_(NULL) { + + // copy attributes + XmlAttr * pAttr; + XmlAttr ** ppLastAttr = &pFirstAttr_; + XmlAttr * newAttr = NULL; + for (pAttr = elt.pFirstAttr_; pAttr; pAttr = pAttr->NextAttr()) { + newAttr = new XmlAttr(*pAttr); + *ppLastAttr = newAttr; + ppLastAttr = &(newAttr->pNextAttr_); + } + pLastAttr_ = newAttr; + + // copy children + XmlChild * pChild; + XmlChild ** ppLast = &pFirstChild_; + XmlChild * newChild = NULL; + + for (pChild = elt.pFirstChild_; pChild; pChild = pChild->NextChild()) { + if (pChild->IsText()) { + newChild = new XmlText(*(pChild->AsText())); + } else { + newChild = new XmlElement(*(pChild->AsElement())); + } + *ppLast = newChild; + ppLast = &(newChild->pNextChild_); + } + pLastChild_ = newChild; + +} + +XmlElement::XmlElement(const TQName & name, bool useDefaultNs) : + name_(name), + pFirstAttr_(useDefaultNs ? new XmlAttr(TQN_XMLNS, name.Namespace()) : NULL), + pLastAttr_(pFirstAttr_), + pFirstChild_(NULL), + pLastChild_(NULL) { +} + +bool +XmlElement::IsTextImpl() const { + return false; +} + +XmlElement * +XmlElement::AsElementImpl() const { + return const_cast<XmlElement *>(this); +} + +XmlText * +XmlElement::AsTextImpl() const { + return NULL; +} + +const std::string & +XmlElement::BodyText() const { + if (pFirstChild_ && pFirstChild_->IsText() && pLastChild_ == pFirstChild_) { + return pFirstChild_->AsText()->Text(); + } + + return STR_EMPTY; +} + +void +XmlElement::SetBodyText(const std::string & text) { + if (text == STR_EMPTY) { + ClearChildren(); + } else if (pFirstChild_ == NULL) { + AddText(text); + } else if (pFirstChild_->IsText() && pLastChild_ == pFirstChild_) { + pFirstChild_->AsText()->SetText(text); + } else { + ClearChildren(); + AddText(text); + } +} + +const TQName & +XmlElement::FirstElementName() const { + const XmlElement * element = FirstElement(); + if (element == NULL) + return TQN_EMPTY; + return element->Name(); +} + +XmlAttr * +XmlElement::FirstAttr() { + return pFirstAttr_; +} + +const std::string & +XmlElement::Attr(const TQName & name) const { + XmlAttr * pattr; + for (pattr = pFirstAttr_; pattr; pattr = pattr->pNextAttr_) { + if (pattr->name_ == name) + return pattr->value_; + } + return STR_EMPTY; +} + +bool +XmlElement::HasAttr(const TQName & name) const { + XmlAttr * pattr; + for (pattr = pFirstAttr_; pattr; pattr = pattr->pNextAttr_) { + if (pattr->name_ == name) + return true; + } + return false; +} + +void +XmlElement::SetAttr(const TQName & name, const std::string & value) { + XmlAttr * pattr; + for (pattr = pFirstAttr_; pattr; pattr = pattr->pNextAttr_) { + if (pattr->name_ == name) + break; + } + if (!pattr) { + pattr = new XmlAttr(name, value); + if (pLastAttr_) + pLastAttr_->pNextAttr_ = pattr; + else + pFirstAttr_ = pattr; + pLastAttr_ = pattr; + return; + } + pattr->value_ = value; +} + +void +XmlElement::ClearAttr(const TQName & name) { + XmlAttr * pattr; + XmlAttr *pLastAttr = NULL; + for (pattr = pFirstAttr_; pattr; pattr = pattr->pNextAttr_) { + if (pattr->name_ == name) + break; + pLastAttr = pattr; + } + if (!pattr) + return; + if (!pLastAttr) + pFirstAttr_ = pattr->pNextAttr_; + else + pLastAttr->pNextAttr_ = pattr->pNextAttr_; + if (pLastAttr_ == pattr) + pLastAttr_ = pLastAttr; + delete pattr; +} + +XmlChild * +XmlElement::FirstChild() { + return pFirstChild_; +} + +XmlElement * +XmlElement::FirstElement() { + XmlChild * pChild; + for (pChild = pFirstChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText()) + return pChild->AsElement(); + } + return NULL; +} + +XmlElement * +XmlElement::NextElement() { + XmlChild * pChild; + for (pChild = pNextChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText()) + return pChild->AsElement(); + } + return NULL; +} + +XmlElement * +XmlElement::FirstWithNamespace(const std::string & ns) { + XmlChild * pChild; + for (pChild = pFirstChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText() && pChild->AsElement()->Name().Namespace() == ns) + return pChild->AsElement(); + } + return NULL; +} + +XmlElement * +XmlElement::NextWithNamespace(const std::string & ns) { + XmlChild * pChild; + for (pChild = pNextChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText() && pChild->AsElement()->Name().Namespace() == ns) + return pChild->AsElement(); + } + return NULL; +} + +XmlElement * +XmlElement::FirstNamed(const TQName & name) { + XmlChild * pChild; + for (pChild = pFirstChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText() && pChild->AsElement()->Name() == name) + return pChild->AsElement(); + } + return NULL; +} + +XmlElement * +XmlElement::NextNamed(const TQName & name) { + XmlChild * pChild; + for (pChild = pNextChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText() && pChild->AsElement()->Name() == name) + return pChild->AsElement(); + } + return NULL; +} + +const std::string & +XmlElement::TextNamed(const TQName & name) const { + XmlChild * pChild; + for (pChild = pFirstChild_; pChild; pChild = pChild->pNextChild_) { + if (!pChild->IsText() && pChild->AsElement()->Name() == name) + return pChild->AsElement()->BodyText(); + } + return STR_EMPTY; +} + +void +XmlElement::InsertChildAfter(XmlChild * pPredecessor, XmlChild * pNext) { + if (pPredecessor == NULL) { + pNext->pNextChild_ = pFirstChild_; + pFirstChild_ = pNext; + } + else { + pNext->pNextChild_ = pPredecessor->pNextChild_; + pPredecessor->pNextChild_ = pNext; + } +} + +void +XmlElement::RemoveChildAfter(XmlChild * pPredecessor) { + XmlChild * pNext; + + if (pPredecessor == NULL) { + pNext = pFirstChild_; + pFirstChild_ = pNext->pNextChild_; + } + else { + pNext = pPredecessor->pNextChild_; + pPredecessor->pNextChild_ = pNext->pNextChild_; + } + + if (pLastChild_ == pNext) + pLastChild_ = pPredecessor; + + delete pNext; +} + +void +XmlElement::AddAttr(const TQName & name, const std::string & value) { + ASSERT(!HasAttr(name)); + + XmlAttr ** pprev = pLastAttr_ ? &(pLastAttr_->pNextAttr_) : &pFirstAttr_; + pLastAttr_ = (*pprev = new XmlAttr(name, value)); +} + +void +XmlElement::AddAttr(const TQName & name, const std::string & value, + int depth) { + XmlElement * element = this; + while (depth--) { + element = element->pLastChild_->AsElement(); + } + element->AddAttr(name, value); +} + +void +XmlElement::AddParsedText(const char * cstr, int len) { + if (len == 0) + return; + + if (pLastChild_ && pLastChild_->IsText()) { + pLastChild_->AsText()->AddParsedText(cstr, len); + return; + } + XmlChild ** pprev = pLastChild_ ? &(pLastChild_->pNextChild_) : &pFirstChild_; + pLastChild_ = *pprev = new XmlText(cstr, len); +} + +void +XmlElement::AddText(const std::string & text) { + if (text == STR_EMPTY) + return; + + if (pLastChild_ && pLastChild_->IsText()) { + pLastChild_->AsText()->AddText(text); + return; + } + XmlChild ** pprev = pLastChild_ ? &(pLastChild_->pNextChild_) : &pFirstChild_; + pLastChild_ = *pprev = new XmlText(text); +} + +void +XmlElement::AddText(const std::string & text, int depth) { + // note: the first syntax is ambigious for msvc 6 + // XmlElement * pel(this); + XmlElement * element = this; + while (depth--) { + element = element->pLastChild_->AsElement(); + } + element->AddText(text); +} + +void +XmlElement::AddElement(XmlElement *pelChild) { + if (pelChild == NULL) + return; + + XmlChild ** pprev = pLastChild_ ? &(pLastChild_->pNextChild_) : &pFirstChild_; + pLastChild_ = *pprev = pelChild; + pelChild->pNextChild_ = NULL; +} + +void +XmlElement::AddElement(XmlElement *pelChild, int depth) { + XmlElement * element = this; + while (depth--) { + element = element->pLastChild_->AsElement(); + } + element->AddElement(pelChild); +} + +void +XmlElement::ClearNamedChildren(const TQName & name) { + XmlChild * prev_child = NULL; + XmlChild * next_child; + XmlChild * child; + for (child = FirstChild(); child; child = next_child) { + next_child = child->NextChild(); + if (!child->IsText() && child->AsElement()->Name() == name) + { + RemoveChildAfter(prev_child); + continue; + } + prev_child = child; + } +} + +void +XmlElement::ClearChildren() { + XmlChild * pchild; + for (pchild = pFirstChild_; pchild; ) { + XmlChild * pToDelete = pchild; + pchild = pchild->pNextChild_; + delete pToDelete; + } + pFirstChild_ = pLastChild_ = NULL; +} + +std::string +XmlElement::Str() const { + std::stringstream ss; + Print(&ss, NULL, 0); + return ss.str(); +} + +XmlElement * +XmlElement::ForStr(const std::string & str) { + XmlBuilder builder; + XmlParser::ParseXml(&builder, str); + return builder.CreateElement(); +} + +void +XmlElement::Print( + std::ostream * pout, std::string xmlns[], int xmlnsCount) const { + XmlPrinter::PrintXml(pout, this, xmlns, xmlnsCount); +} + +XmlElement::~XmlElement() { + XmlAttr * pattr; + for (pattr = pFirstAttr_; pattr; ) { + XmlAttr * pToDelete = pattr; + pattr = pattr->pNextAttr_; + delete pToDelete; + } + + XmlChild * pchild; + for (pchild = pFirstChild_; pchild; ) { + XmlChild * pToDelete = pchild; + pchild = pchild->pNextChild_; + delete pToDelete; + } +} + +} |