tools/source/xml/XmlWriter.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <tools/XmlWriter.hxx>
  11 #include <o3tl/make_unique.hxx>
  12
  13 #include <libxml/xmlwriter.h>
  14
  15 namespace tools
  16 {
  17 namespace
  18 {
  19 int funcWriteCallback(void* pContext, const char* sBuffer, int nLen)
  20 {
  21     SvStream* pStream = static_cast<SvStream*>(pContext);
  22     return static_cast<int>(pStream->WriteBytes(sBuffer, nLen));
  23 }
  24
  25 int funcCloseCallback(void* pContext)
  26 {
  27     SvStream* pStream = static_cast<SvStream*>(pContext);
  28     pStream->Flush();
  29     return 0; // 0 or -1 in case of error
  30 }
  31
  32 } // end anonymous namespace
  33
  34 struct XmlWriterImpl
  35 {
  36     XmlWriterImpl(SvStream* pStream)
  37         : mpStream(pStream)
  38         , mpWriter(nullptr)
  39     {
  40     }
  41
  42     SvStream* mpStream;
  43     xmlTextWriterPtr mpWriter;
  44 };
  45
  46 XmlWriter::XmlWriter(SvStream* pStream)
  47     : mpImpl(o3tl::make_unique<XmlWriterImpl>(pStream))
  48 {
  49 }
  50
  51 XmlWriter::~XmlWriter()
  52 {
  53     if (mpImpl && mpImpl->mpWriter != nullptr)
  54         endDocument();
  55 }
  56
  57 bool XmlWriter::startDocument()
  58 {
  59     xmlOutputBufferPtr xmlOutBuffer
  60         = xmlOutputBufferCreateIO(funcWriteCallback, funcCloseCallback, mpImpl->mpStream, nullptr);
  61     mpImpl->mpWriter = xmlNewTextWriter(xmlOutBuffer);
  62     if (mpImpl->mpWriter == nullptr)
  63         return false;
  64     xmlTextWriterSetIndent(mpImpl->mpWriter, 1);
  65     xmlTextWriterStartDocument(mpImpl->mpWriter, nullptr, "UTF-8", nullptr);
  66     return true;
  67 }
  68
  69 void XmlWriter::endDocument()
  70 {
  71     xmlTextWriterEndDocument(mpImpl->mpWriter);
  72     xmlFreeTextWriter(mpImpl->mpWriter);
  73     mpImpl->mpWriter = nullptr;
  74 }
  75
  76 void XmlWriter::startElement(const OString& sName)
  77 {
  78     xmlChar* xmlName = xmlCharStrdup(sName.getStr());
  79     xmlTextWriterStartElement(mpImpl->mpWriter, xmlName);
  80     xmlFree(xmlName);
  81 }
  82
  83 void XmlWriter::endElement() { xmlTextWriterEndElement(mpImpl->mpWriter); }
  84
  85 void XmlWriter::attribute(const OString& name, const OString& value)
  86 {
  87     xmlChar* xmlName = xmlCharStrdup(name.getStr());
  88     xmlChar* xmlValue = xmlCharStrdup(value.getStr());
  89     xmlTextWriterWriteAttribute(mpImpl->mpWriter, xmlName, xmlValue);
  90     xmlFree(xmlValue);
  91     xmlFree(xmlName);
  92 }
  93
  94 void XmlWriter::attribute(const OString& name, const OUString& value)
  95 {
  96     attribute(name, OUStringToOString(value, RTL_TEXTENCODING_UTF8).getStr());
  97 }
  98
  99 void XmlWriter::attribute(const OString& name, const sal_Int32 aNumber)
 100 {
 101     attribute(name, OUString::number(aNumber));
 102 }
 103
 104 void XmlWriter::content(const OString& sValue)
 105 {
 106     xmlChar* xmlValue = xmlCharStrdup(sValue.getStr());
 107     xmlTextWriterWriteString(mpImpl->mpWriter, xmlValue);
 108     xmlFree(xmlValue);
 109 }
 110
 111 void XmlWriter::content(const OUString& sValue)
 112 {
 113     content(OUStringToOString(sValue, RTL_TEXTENCODING_UTF8));
 114 }
 115
 116 void XmlWriter::element(const OString& sName)
 117 {
 118     startElement(sName);
 119     endElement();
 120 }
 121
 122 } // end tools namespace
 123
 124 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */