svtools/source/svhtml/HtmlWriter.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
  11 #include <svtools/HtmlWriter.hxx>
  12 #include <tools/stream.hxx>
  13 #include <sal/log.hxx>
  14 #include <svtools/htmlout.hxx>
  15
  16 HtmlWriter::HtmlWriter(SvStream& rStream, std::string_view rNamespace) :
  17     mrStream(rStream),
  18     mbPrettyPrint(true)
  19 {
  20     if (!rNamespace.empty())
  21     {
  22         // Convert namespace alias to a prefix.
  23         maNamespace = OString::Concat(rNamespace) + ":";
  24     }
  25 }
  26
  27 HtmlWriter::~HtmlWriter()
  28 {
  29     assert(maElementStack.empty());
  30 }
  31
  32 void HtmlWriter::prettyPrint(bool b)
  33 {
  34     mbPrettyPrint = b;
  35 }
  36
  37 void HtmlWriter::start(const OString& aElement)
  38 {
  39     if (mbOpeningTagOpen)
  40     {
  41         mrStream.WriteChar('>');
  42         if (mbPrettyPrint)
  43             mrStream.WriteChar('\n');
  44     }
  45     maElementStack.push_back(aElement);
  46
  47     if (mbPrettyPrint)
  48     {
  49         for(size_t i = 0; i < maElementStack.size() - 1; i++)
  50         {
  51             mrStream.WriteOString("  ");
  52         }
  53     }
  54
  55     mrStream.WriteChar('<');
  56     mrStream.WriteOString(Concat2View(maNamespace + aElement));
  57     mbOpeningTagOpen = true;
  58 }
  59
  60 void HtmlWriter::single(const OString &aContent)
  61 {
  62     start(aContent);
  63     end();
  64 }
  65
  66 void HtmlWriter::flushStack()
  67 {
  68     while (!maElementStack.empty())
  69     {
  70         end();
  71     }
  72 }
  73
  74 bool HtmlWriter::end(const OString& aElement)
  75 {
  76     bool bExpected = maElementStack.back() == aElement;
  77     SAL_WARN_IF(!bExpected, "svtools", "HtmlWriter: end element mismatch - '" << aElement << "' expected '" << maElementStack.back() << "'");
  78     end();
  79     return bExpected;
  80 }
  81
  82 void HtmlWriter::end()
  83 {
  84     if (mbOpeningTagOpen)
  85     {
  86         mrStream.WriteOString("/>");
  87         if (mbPrettyPrint)
  88             mrStream.WriteOString("\n");
  89         mbOpeningTagOpen = false;
  90     }
  91     else
  92     {
  93         if (mbPrettyPrint)
  94         {
  95             for(size_t i = 0; i < maElementStack.size() - 1; i++)
  96             {
  97                 mrStream.WriteOString("  ");
  98             }
  99         }
 100         mrStream.WriteOString("</");
 101         mrStream.WriteOString(Concat2View(maNamespace + maElementStack.back()));
 102         mrStream.WriteOString(">");
 103         if (mbPrettyPrint)
 104             mrStream.WriteOString("\n");
 105     }
 106     maElementStack.pop_back();
 107 }
 108
 109 void HtmlWriter::attribute(std::string_view aAttribute, std::string_view aValue)
 110 {
 111     attribute(aAttribute, OStringToOUString(aValue, RTL_TEXTENCODING_UTF8));
 112 }
 113
 114 void HtmlWriter::attribute(std::string_view aAttribute, const sal_Int32 aValue)
 115 {
 116     attribute(aAttribute, OString::number(aValue));
 117 }
 118
 119 void HtmlWriter::attribute(std::string_view aAttribute, const OUString& aValue)
 120 {
 121     assert(mbOpeningTagOpen);
 122     if (mbOpeningTagOpen && !aAttribute.empty() && !aValue.isEmpty())
 123     {
 124         mrStream.WriteChar(' ');
 125         mrStream.WriteOString(aAttribute);
 126         mrStream.WriteOString("=\"");
 127         HTMLOutFuncs::Out_String(mrStream, aValue);
 128         mrStream.WriteChar('"');
 129     }
 130 }
 131
 132 void HtmlWriter::attribute(std::string_view aAttribute)
 133 {
 134     assert(mbOpeningTagOpen);
 135     if (mbOpeningTagOpen && !aAttribute.empty())
 136     {
 137         mrStream.WriteChar(' ');
 138         mrStream.WriteOString(aAttribute);
 139     }
 140 }
 141
 142 void HtmlWriter::characters(std::string_view rChars)
 143 {
 144     if (mbOpeningTagOpen)
 145     {
 146         mrStream.WriteOString(">");
 147         mbOpeningTagOpen = false;
 148     }
 149     mrStream.WriteOString(rChars);
 150 }
 151
 152 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */