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Add function to save URL to file, parse to XML tree and insert into vector as images

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This commit is contained in:
Ylva Selling
2021-03-30 08:28:32 +02:00
parent 0b85180bb5
commit ec138b6897
4 changed files with 96 additions and 2 deletions
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modules/skybrowser/skybrowsermodule.cpp
+75 -1
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@@ -23,6 +23,9 @@
****************************************************************************************/
#include <modules/skybrowser/skybrowsermodule.h>
#include <modules/skybrowser/rapidxmlparser/rapidxml.hpp> // For parsing xml
#include <modules/skybrowser/rapidxmlparser/rapidxml_utils.hpp> // For parsing xml
#include <modules/skybrowser/rapidxmlparser/rapidxml_print.hpp> // For parsing xml
//#include <modules/webbrowser/webbrowsermodule.h>
//#include <modules/webbrowser/include/screenspacebrowser.h>
@@ -41,8 +44,11 @@
#include <ghoul/logging/logmanager.h>
#include <ghoul/opengl/texture.h>
#include <cmath> // For atan2
#include <glm/gtx/string_cast.hpp>
#include <glm/gtx/string_cast.hpp> // For printing glm data
#include <ghoul/filesystem/filesystem.h>
#include <openspace/util/httprequest.h> // For downloading files from url
#include <fstream>
namespace {
struct [[codegen::Dictionary(ScreenSpaceSkyBrowser)]] Parameters {
@@ -284,6 +290,74 @@ ScreenSpaceSkyTarget* SkyBrowserModule::to_target(ScreenSpaceRenderable* ptr) {
return dynamic_cast<ScreenSpaceSkyTarget*>(ptr);
}
void SkyBrowserModule::loadImages(std::string url, std::string fileDestination) {
// Get the webpage and save to file
HttpRequest::RequestOptions opt{0};
SyncHttpFileDownload wtml_root(url, fileDestination, HttpFileDownload::Overwrite::Yes);
wtml_root.download(opt);
// Parse XML document
using namespace rapidxml;
rapidxml::file<> xmlFile(fileDestination.c_str()); // Default template is char
rapidxml::xml_document<> doc;
doc.parse<0>(xmlFile.data());
// Get child of node until we find the "Place" node
xml_node<>* place = getChildNode(doc.first_node(), "Place");
// Iterate through all the places and load as images
while (place) {
loadImage(place);
place = place->next_sibling();
}
LINFO(images[55].thumbnailUrl);
}
int SkyBrowserModule::loadImage(rapidxml::xml_node<>* imgNode) {
ImageData image;
using namespace rapidxml;
// Get all attributes for the <Place>
for (xml_attribute<>* attr = imgNode->first_attribute(); attr; attr = attr->next_attribute())
{
if (attr->name() == "RA") {
image.celestCoords.x = std::stof(attr->value());
}
else if (attr->name() == "DEC") {
image.celestCoords.y = std::stof(attr->value());
}
else if (attr->name() == "Classification") {
image.name = attr->value();
}
}
xml_node<>* imageSet = getChildNode(imgNode, "ImageSet");
if (!imageSet) return -1;
// Get all attributes for the <ImageSet>
for (xml_attribute<>* attr = imageSet->first_attribute(); attr; attr = attr->next_attribute()) {
if (attr->name() == "Name") {
image.name = attr->value();
break;
}
}
// The thumbnail is the last node so traverse backwards for speed
xml_node<>* imageSetChild = imageSet->last_node();
while (imageSetChild) {
if (std::string(imageSetChild->name()) == "ThumbnailUrl") {
image.thumbnailUrl = imageSetChild->value();
break;
}
imageSetChild = imageSetChild->previous_sibling();
}
images.push_back(image);
// Return index of image in vector
return images.size();
}
rapidxml::xml_node<>* SkyBrowserModule::getChildNode(rapidxml::xml_node<>* node, std::string name) {
while (node && std::string(node->name()) != name) {
node = node->first_node();
}
return node;
}
/*
std::vector<documentation::Documentation> SkyBrowserModule::documentations() const {