From 4750f6c5ed8f74683ebaa013079e24598a753cbe Mon Sep 17 00:00:00 2001 From: Eelco Dolstra Date: Thu, 3 Aug 2006 13:21:21 +0000 Subject: [PATCH] * Simple class for writing XML files. --- src/libutil/xml-writer.cc | 161 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 161 insertions(+) create mode 100644 src/libutil/xml-writer.cc diff --git a/src/libutil/xml-writer.cc b/src/libutil/xml-writer.cc new file mode 100644 index 000000000..269944909 --- /dev/null +++ b/src/libutil/xml-writer.cc @@ -0,0 +1,161 @@ +#include +#include +#include +#include +#include +using namespace std; + + +typedef map XMLAttrs; + + +class XMLWriter +{ +private: + + ostream & output; + + bool closed; + + list pendingElems; + +public: + + XMLWriter(ostream & output); + ~XMLWriter(); + + void close(); + + void openElement(const string & name, + const XMLAttrs & attrs = XMLAttrs()); + void closeElement(); + + void writeShortElement(const string & name, + const XMLAttrs & attrs = XMLAttrs()); + + void writeCharData(const string & data); + +private: + void writeAttrs(const XMLAttrs & attrs); +}; + + +class XMLOpenElement +{ +private: + XMLWriter & writer; +public: + XMLOpenElement(XMLWriter & writer, const string & name, + const XMLAttrs & attrs = XMLAttrs()) + : writer(writer) + { + writer.openElement(name, attrs); + } + ~XMLOpenElement() + { + writer.closeElement(); + } +}; + + +XMLWriter::XMLWriter(ostream & output) + : output(output) +{ + output << "\n"; + closed = false; +} + + +XMLWriter::~XMLWriter() +{ + close(); +} + + +void XMLWriter::close() +{ + if (closed) return; + while (!pendingElems.empty()) closeElement(); + closed = true; +} + + +void XMLWriter::openElement(const string & name, + const XMLAttrs & attrs) +{ + assert(!closed); + output << "<" << name; + writeAttrs(attrs); + output << ">"; + pendingElems.push_back(name); +} + + +void XMLWriter::closeElement() +{ + assert(!pendingElems.empty()); + output << ""; + pendingElems.pop_back(); + if (pendingElems.empty()) closed = true; +} + + +void XMLWriter::writeShortElement(const string & name, + const XMLAttrs & attrs) +{ + assert(!closed); + output << "<" << name; + writeAttrs(attrs); + output << " />"; +} + + +void XMLWriter::writeCharData(const string & data) +{ + assert(!pendingElems.empty()); + for (unsigned int i = 0; i < data.size(); ++i) { + char c = data[i]; + if (c == '<') output << "<"; + else if (c == '&') output << "&"; + else output << c; + } +} + + +void XMLWriter::writeAttrs(const XMLAttrs & attrs) +{ + for (XMLAttrs::const_iterator i = attrs.begin(); i != attrs.end(); ++i) { + output << " " << i->first << "=\""; + for (unsigned int j = 0; j < i->second.size(); ++j) { + char c = i->second[j]; + if (c == '"') output << """; + else if (c == '<') output << "<"; + else if (c == '&') output << "&"; + else output << c; + } + output << "\""; + } +} + + +int main(int argc, char * * argv) +{ + XMLWriter doc(cout); + + // OpenElement e(doc, "foo"); + + doc.openElement("foo"); + + doc.writeCharData("dit is een test &\n"); + doc.writeCharData("\n"); + + for (int i = 0; i < 5; ++i) { + XMLAttrs attrs; + attrs["a"] = "b"; + attrs["bla"] = "'&\">"; + XMLOpenElement e(doc, "item", attrs); + doc.writeCharData("x"); + } + + return 0; +}