Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 282 insertions, 0 deletions

diff --git a/sc/source/ui/dataprovider/htmldataprovider.cxx b/sc/source/ui/dataprovider/htmldataprovider.cxx
new file mode 100644
index 000000000..fbd1daaa3
--- /dev/null
+++ b/sc/source/ui/dataprovider/htmldataprovider.cxx
@@ -0,0 +1,282 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "htmldataprovider.hxx"
+#include <datamapper.hxx>
+#include <datatransformation.hxx>
+#include <salhelper/thread.hxx>
+#include <vcl/svapp.hxx>
+#include <tools/stream.hxx>
+
+#include <libxml/HTMLparser.h>
+
+#include <libxml/xpath.h>
+
+#include <comphelper/string.hxx>
+#include <utility>
+
+namespace sc {
+
+class HTMLFetchThread : public salhelper::Thread
+{
+    ScDocument& mrDocument;
+    OUString maURL;
+    OUString maID;
+    const std::vector<std::shared_ptr<sc::DataTransformation>> maDataTransformations;
+    std::function<void()> maImportFinishedHdl;
+
+    void handleTable(xmlNodePtr pTable);
+    void handleRow(xmlNodePtr pRow, SCROW nRow);
+    void skipHeadBody(xmlNodePtr pSkip, SCROW& rRow);
+    void handleCell(xmlNodePtr pCell, SCROW nRow, SCCOL nCol);
+
+public:
+    HTMLFetchThread(ScDocument& rDoc, const OUString&, const OUString& rID, std::function<void()> aImportFinishedHdl,
+            const std::vector<std::shared_ptr<sc::DataTransformation>>& rTransformations);
+
+    virtual void execute() override;
+};
+
+HTMLFetchThread::HTMLFetchThread(
+    ScDocument& rDoc, const OUString& rURL, const OUString& rID,
+    std::function<void()> aImportFinishedHdl,
+    const std::vector<std::shared_ptr<sc::DataTransformation>>& rTransformations)
+    : salhelper::Thread("HTML Fetch Thread")
+    , mrDocument(rDoc)
+    , maURL(rURL)
+    , maID(rID)
+    , maDataTransformations(rTransformations)
+    , maImportFinishedHdl(std::move(aImportFinishedHdl))
+{
+}
+
+namespace {
+
+OString toString(const xmlChar* pStr)
+{
+    return OString(reinterpret_cast<const char*>(pStr), xmlStrlen(pStr));
+}
+
+OUString trim_string(const OUString& aStr)
+{
+    OUString aOldString;
+    OUString aString = aStr;
+    do
+    {
+        aOldString = aString;
+        aString = comphelper::string::strip(aString, ' ');
+        aString = comphelper::string::strip(aString, '\n');
+        aString = comphelper::string::strip(aString, '\r');
+        aString = comphelper::string::strip(aString, '\t');
+    }
+    while (aOldString != aString);
+
+    return aString;
+}
+
+OUString get_node_str(xmlNodePtr pNode)
+{
+    OUStringBuffer aStr;
+    for (xmlNodePtr cur_node = pNode->children; cur_node; cur_node = cur_node->next)
+    {
+        if (cur_node->type == XML_TEXT_NODE)
+        {
+            OUString aString = OStringToOUString(toString(cur_node->content), RTL_TEXTENCODING_UTF8);
+            aStr.append(trim_string(aString));
+        }
+        else if (cur_node->type == XML_ELEMENT_NODE)
+        {
+            aStr.append(get_node_str(cur_node));
+        }
+    }
+
+    return aStr.makeStringAndClear();
+}
+
+}
+
+void HTMLFetchThread::handleCell(xmlNodePtr pCellNode, SCROW nRow, SCCOL nCol)
+{
+    OUStringBuffer aStr;
+    for (xmlNodePtr cur_node = pCellNode->children; cur_node; cur_node = cur_node->next)
+    {
+        if (cur_node->type == XML_TEXT_NODE)
+        {
+            OUString aString = OStringToOUString(toString(cur_node->content), RTL_TEXTENCODING_UTF8);
+            aStr.append(trim_string(aString));
+        }
+        else if (cur_node->type == XML_ELEMENT_NODE)
+        {
+            aStr.append(get_node_str(cur_node));
+        }
+    }
+
+    if (!aStr.isEmpty())
+    {
+        OUString aCellStr = aStr.makeStringAndClear();
+        mrDocument.SetString(nCol, nRow, 0, aCellStr);
+    }
+}
+
+void HTMLFetchThread::handleRow(xmlNodePtr pRowNode, SCROW nRow)
+{
+    sal_Int32 nCol = 0;
+    for (xmlNodePtr cur_node = pRowNode->children; cur_node; cur_node = cur_node->next)
+    {
+        if (cur_node->type == XML_ELEMENT_NODE)
+        {
+            OString aNodeName = toString(cur_node->name);
+            if (aNodeName == "td" || aNodeName == "th")
+            {
+                handleCell(cur_node, nRow, nCol);
+                ++nCol;
+            }
+        }
+    }
+}
+
+void HTMLFetchThread::skipHeadBody(xmlNodePtr pSkipElement, SCROW& rRow)
+{
+    for (xmlNodePtr cur_node = pSkipElement->children; cur_node; cur_node = cur_node->next)
+    {
+        if (cur_node->type == XML_ELEMENT_NODE)
+        {
+            OString aNodeName = toString(cur_node->name);
+            if (aNodeName == "tr")
+            {
+                handleRow(cur_node, rRow);
+                ++rRow;
+            }
+
+        }
+    }
+}
+
+void HTMLFetchThread::handleTable(xmlNodePtr pTable)
+{
+    sal_Int32 nRow = 0;
+    for (xmlNodePtr cur_node = pTable->children; cur_node; cur_node = cur_node->next)
+    {
+        if (cur_node->type == XML_ELEMENT_NODE)
+        {
+            OString aNodeName = toString(cur_node->name);
+            if (aNodeName == "tr")
+            {
+                handleRow(cur_node, nRow);
+                ++nRow;
+            }
+            else if (aNodeName == "thead" || aNodeName == "tbody")
+            {
+                skipHeadBody(cur_node, nRow);
+            }
+        }
+    }
+}
+
+void HTMLFetchThread::execute()
+{
+    OStringBuffer aBuffer(64000);
+    DataProvider::FetchStreamFromURL(maURL, aBuffer);
+
+    if (aBuffer.isEmpty())
+        return;
+
+    htmlDocPtr pHtmlPtr = htmlParseDoc(reinterpret_cast<xmlChar*>(const_cast<char*>(aBuffer.getStr())), nullptr);
+
+    OString aID = OUStringToOString(maID, RTL_TEXTENCODING_UTF8);
+    xmlXPathContextPtr pXmlXpathCtx = xmlXPathNewContext(pHtmlPtr);
+    xmlXPathObjectPtr pXmlXpathObj = xmlXPathEvalExpression(BAD_CAST(aID.getStr()), pXmlXpathCtx);
+
+    if (!pXmlXpathObj)
+    {
+        xmlXPathFreeContext(pXmlXpathCtx);
+        return;
+    }
+    xmlNodeSetPtr pXmlNodes = pXmlXpathObj->nodesetval;
+
+    if (!pXmlNodes)
+    {
+        xmlXPathFreeNodeSetList(pXmlXpathObj);
+        xmlXPathFreeContext(pXmlXpathCtx);
+        return;
+    }
+
+    if (pXmlNodes->nodeNr == 0)
+    {
+        xmlXPathFreeNodeSet(pXmlNodes);
+        xmlXPathFreeNodeSetList(pXmlXpathObj);
+        xmlXPathFreeContext(pXmlXpathCtx);
+        return;
+    }
+
+    xmlNodePtr pNode = pXmlNodes->nodeTab[0];
+    handleTable(pNode);
+
+    xmlXPathFreeNodeSet(pXmlNodes);
+    xmlXPathFreeNodeSetList(pXmlXpathObj);
+    xmlXPathFreeContext(pXmlXpathCtx);
+
+    for (auto& itr : maDataTransformations)
+    {
+        itr->Transform(mrDocument);
+    }
+
+    SolarMutexGuard aGuard;
+    maImportFinishedHdl();
+}
+
+HTMLDataProvider::HTMLDataProvider(ScDocument* pDoc, sc::ExternalDataSource& rDataSource):
+    DataProvider(rDataSource),
+    mpDocument(pDoc)
+{
+}
+
+HTMLDataProvider::~HTMLDataProvider()
+{
+    if (mxHTMLFetchThread.is())
+    {
+        SolarMutexReleaser aReleaser;
+        mxHTMLFetchThread->join();
+    }
+}
+
+void HTMLDataProvider::Import()
+{
+    // already importing data
+    if (mpDoc)
+        return;
+
+    mpDoc.reset(new ScDocument(SCDOCMODE_CLIP));
+    mpDoc->ResetClip(mpDocument, SCTAB(0));
+    mxHTMLFetchThread = new HTMLFetchThread(*mpDoc, mrDataSource.getURL(), mrDataSource.getID(),
+            std::bind(&HTMLDataProvider::ImportFinished, this), mrDataSource.getDataTransformation());
+    mxHTMLFetchThread->launch();
+
+    if (mbDeterministic)
+    {
+        SolarMutexReleaser aReleaser;
+        mxHTMLFetchThread->join();
+    }
+}
+
+void HTMLDataProvider::ImportFinished()
+{
+    mrDataSource.getDBManager()->WriteToDoc(*mpDoc);
+    mxHTMLFetchThread.clear();
+    mpDoc.reset();
+}
+
+const OUString& HTMLDataProvider::GetURL() const
+{
+    return mrDataSource.getURL();
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */