52 lines
1.9 KiB
D
52 lines
1.9 KiB
D
/**
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* Defines functions for reading and writing XML content while handling HTTP
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* requests, using the dxml library: https://code.dlang.org/packages/dxml
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*/
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module handy_http_data.xml;
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import handy_http_primitives.request;
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import handy_http_primitives.response;
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import dxml.dom;
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import dxml.writer;
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import std.array : appender, Appender;
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import streams;
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/**
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* Reads an XML request body.
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* Params:
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* request = The request to read from.
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* Returns: The DOMEntity representing the XML payload.
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*/
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DOMEntity!string readXMLBody(ref ServerHttpRequest request) {
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string contentType = request.getHeaderAs!string("Content-Type");
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if (!(contentType == "application/xml" || contentType == "text/xml")) {
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throw new HttpStatusException(HttpStatus.UNSUPPORTED_MEDIA_TYPE, "Non-XML Content-Type header.");
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}
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string bodyContent = request.readBodyAsString(false);
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return parseDOM(bodyContent);
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}
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/**
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* Writes an XML response body, by using the provided delegate function to
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* compose the XML tag tree using a provided XMLWriter.
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*
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* See https://jmdavisprog.com/docs/dxml/0.4.4/dxml_writer.html#.xmlWriter
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* Params:
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* response = The HTTP response to write to.
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* dg = The delegate function that will be called to generate the XML.
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*/
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void writeXMLBody(ref ServerHttpResponse response, void delegate(ref XMLWriter!(Appender!string)) dg) {
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import std.conv : to;
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auto writer = xmlWriter(appender!string());
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dg(writer);
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string xmlContent = writer.output[];
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response.headers.remove("Content-Type");
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response.headers.add("Content-Type", "application/xml");
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response.headers.add("Content-Length", to!string(xmlContent.length));
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StreamResult result = response.outputStream.writeToStream(cast(ubyte[]) xmlContent);
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if (result.hasError) {
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StreamError err = result.error;
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throw new HttpStatusException(HttpStatus.INTERNAL_SERVER_ERROR, cast(string) err.message);
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}
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}
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