Moved code around to make possible to compile the C part alone.

The C code should be compilable without the need to compile the Gui part,
too. This is expecially good for unit testing as we can test all the
algorithms without a window appearing out of nowhere.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@intel.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qthelper.cpp

@@ -1,12 +1,19 @@
 #include "qthelper.h"
-#include "qt-ui/mainwindow.h"
 #include "qt-gui.h"
 #include <QRegExp>
 #include <QDir>
-#include <QFileDialog>
-#include <QDebug>
 
-#define tr(_arg) MainWindow::instance()->information()->tr(_arg)
+#include <QDebug>
+#include <QSettings>
+#include <libxslt/documents.h>
+
+#define tr(_arg) QObject::tr(_arg)
+
+const char *default_dive_computer_vendor;
+const char *default_dive_computer_product;
+const char *default_dive_computer_device;
+DiveComputerList dcList;
+
 DiveComputerList::DiveComputerList()
 {
 }
@@ -265,3 +272,136 @@ int getUniqID(struct dive *d)
 	ids.insert(id);
 	return id;
 }
+
+extern "C" void create_device_node(const char *model, uint32_t deviceid, const char *serial, const char *firmware, const char *nickname)
+{
+	dcList.addDC(model, deviceid, nickname, serial, firmware);
+}
+
+extern "C" bool compareDC(const DiveComputerNode &a, const DiveComputerNode &b)
+{
+	return a.deviceId < b.deviceId;
+}
+
+extern "C" void call_for_each_dc(void *f, void (*callback)(void *, const char *, uint32_t,
+						const char *, const char *, const char *))
+{
+	QList<DiveComputerNode> values = dcList.dcMap.values();
+	qSort(values.begin(), values.end(), compareDC);
+	for (int i = 0; i < values.size(); i++) {
+		const DiveComputerNode *node = &values.at(i);
+		callback(f, node->model.toUtf8().data(), node->deviceId, node->nickName.toUtf8().data(),
+			 node->serialNumber.toUtf8().data(), node->firmware.toUtf8().data());
+	}
+}
+
+
+static xmlDocPtr get_stylesheet_doc(const xmlChar *uri, xmlDictPtr, int, void *, xsltLoadType)
+{
+	QFile f(QLatin1String(":/xslt/") + (const char *)uri);
+	if (!f.open(QIODevice::ReadOnly))
+		return NULL;
+
+	/* Load and parse the data */
+	QByteArray source = f.readAll();
+
+	xmlDocPtr doc = xmlParseMemory(source, source.size());
+	return doc;
+}
+
+extern "C" xsltStylesheetPtr get_stylesheet(const char *name)
+{
+	// this needs to be done only once, but doesn't hurt to run every time
+	xsltSetLoaderFunc(get_stylesheet_doc);
+
+	// get main document:
+	xmlDocPtr doc = get_stylesheet_doc((const xmlChar *)name, NULL, 0, NULL, XSLT_LOAD_START);
+	if (!doc)
+		return NULL;
+
+	//	xsltSetGenericErrorFunc(stderr, NULL);
+	xsltStylesheetPtr xslt = xsltParseStylesheetDoc(doc);
+	if (!xslt) {
+		xmlFreeDoc(doc);
+		return NULL;
+	}
+
+	return xslt;
+}
+
+extern "C" int is_default_dive_computer(const char *vendor, const char *product)
+{
+	return default_dive_computer_vendor && !strcmp(vendor, default_dive_computer_vendor) &&
+	       default_dive_computer_product && !strcmp(product, default_dive_computer_product);
+}
+
+extern "C" int is_default_dive_computer_device(const char *name)
+{
+	return default_dive_computer_device && !strcmp(name, default_dive_computer_device);
+}
+
+void set_default_dive_computer(const char *vendor, const char *product)
+{
+	QSettings s;
+
+	if (!vendor || !*vendor)
+		return;
+	if (!product || !*product)
+		return;
+	if (is_default_dive_computer(vendor, product))
+		return;
+	if (default_dive_computer_vendor)
+		free((void *)default_dive_computer_vendor);
+	if (default_dive_computer_product)
+		free((void *)default_dive_computer_product);
+	default_dive_computer_vendor = strdup(vendor);
+	default_dive_computer_product = strdup(product);
+	s.beginGroup("DiveComputer");
+	s.setValue("dive_computer_vendor", vendor);
+	s.setValue("dive_computer_product", product);
+	s.endGroup();
+}
+
+void set_default_dive_computer_device(const char *name)
+{
+	QSettings s;
+
+	if (!name || !*name)
+		return;
+	if (is_default_dive_computer_device(name))
+		return;
+	if (default_dive_computer_device)
+		free((void *)default_dive_computer_device);
+	default_dive_computer_device = strdup(name);
+	s.beginGroup("DiveComputer");
+	s.setValue("dive_computer_device", name);
+	s.endGroup();
+}
+
+extern "C" void set_dc_nickname(struct dive *dive)
+{
+	if (!dive)
+		return;
+
+	struct divecomputer *dc = &dive->dc;
+
+	while (dc) {
+		if (dc->model && *dc->model && dc->deviceid &&
+		    !dcList.getExact(dc->model, dc->deviceid)) {
+			// we don't have this one, yet
+			const DiveComputerNode *existNode = dcList.get(dc->model);
+			if (existNode) {
+				// we already have this model but a different deviceid
+				QString simpleNick(dc->model);
+				if (dc->deviceid == 0)
+					simpleNick.append(" (unknown deviceid)");
+				else
+					simpleNick.append(" (").append(QString::number(dc->deviceid, 16)).append(")");
+				dcList.addDC(dc->model, dc->deviceid, simpleNick);
+			} else {
+				dcList.addDC(dc->model, dc->deviceid);
+			}
+		}
+		dc = dc->next;
+	}
+}