Merge lp:~alexwolf/stellarium/scripts-output into lp:stellarium

[Alexander Wolf]

Added new feature to scripting engine: support of output data into a separate file from scripts

[gzotti (georg-zotti)]

I rarely have used the script console (not lack of interest - it's a great feature, just not for me currently...). What shall I test? Any test script included that uses the new feature and shows usage syntax?

review: Needs Information

[Alexander Wolf (alexwolf)]

A long time the only way getting tabulated data from scripts for using outside Stellarium was using debug mode: e.g. core.debug("some text"); Now I introduce second output channel from scripts - core.output("some text");. You can use within scripts core.debug() for debugging messages and core.output() for data.

Typical case for the new feature - getting table coordinates of celestial body as function of time.

[gzotti (georg-zotti)]

Sounds good. But can you maybe add a practical example, e.g. scripts/ephemeris-file-for-selected.ssc or so, that could provide as usage example: 1 month of day-to-day RA/Dec/mag/distance/... values of the currently selected object (ideally of Planet class or subclasses thereof). Else I don't know whether any potential user (me included ;-) will understand what to do/how to use it. As I said, I am not a frequent user of the scripts, although I find them a valuable feature.

In the source file I see the output goes into <USERDIR>/output.txt. Maybe a way to set filename in the script would be possible? This would allow having several similar scripts for objects of interest that can be called without further editing?

[Alexander Wolf (alexwolf)]

Just put it into script console and run :)

core.setDate("2014-01-01T12:00:00", "utc");
core.output("Day\t|\tRA\t|\tDE\t|\tMagnitude");
for(i=0;i<365;i++)
{
 data = core.getObjectInfo("Mars");
 core.output(i+"\t|"+data["ra"]+"\t|"+data["dec"]+"\t|"+data["vmag"]);
 core.setDate("+1day");
 core.wait(0.1);
}

[Alexander Wolf (alexwolf)]

Or:

core.setJDay(2456600);
core.output("JD\t|Delta T");
core.output("======================");
for(i=0;i<500;i++)
{
 core.output(core.getJDay()+"\t|"+core.getDeltaT());
 core.setJDay(core.getJDay()+100);
 core.wait(0.1);
}

[Alexander Wolf (alexwolf)]

output file name is hard coded for security reason

[gzotti (georg-zotti)]

OK, I get syntax errors in the scripts. Just the one line with "output" works, though, that was the main point.
Another suggestion if creating with filename not possible: As I see it, the file gets reset on every start. Maybe make it configurable to allow appending? This would be useful for intermittent work on long observation lists, ephemerides etc, which one would like to collect for later use. Catastrophic for those users if file gets reset just with a restart of Stellarium.

[lp:~alexwolf/stellarium/scripts-output]

6945. By Alexander Wolf on 2014-08-12

introduced new option - main/use_separate_output_file

[Alexander Wolf (alexwolf)]

I introduce new config option - main/use_separate_output_file - to enable create a new file for output for each start of Stellarium.

By default main/use_separate_output_file=false and Stellarium use one output.txt file

[gzotti (georg-zotti)]

OK, also a good solution!

review: Approve

=== modified file 'src/CMakeLists.txt'
--- src/CMakeLists.txt	2014-07-26 13:16:21 +0000
+++ src/CMakeLists.txt	2014-08-12 09:52:27 +0000
@@ -252,6 +252,8 @@
 
 IF(ENABLE_SCRIPTING)
 	SET(stellarium_lib_SRCS ${stellarium_lib_SRCS}
+		scripting/StelScriptOutput.hpp
+		scripting/StelScriptOutput.cpp
 		scripting/StelScriptMgr.cpp
 		scripting/StratoscriptPreprocessor.cpp
 		scripting/StelScriptMgr.hpp
 
=== modified file 'src/gui/ScriptConsole.cpp'
--- src/gui/ScriptConsole.cpp	2014-04-19 12:01:08 +0000
+++ src/gui/ScriptConsole.cpp	2014-08-12 09:52:27 +0000
@@ -89,6 +89,7 @@
 	connect(ui->quickrunCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(quickRun(int)));
 	connect(&StelApp::getInstance().getScriptMgr(), SIGNAL(scriptStopped()), this, SLOT(scriptEnded()));
 	connect(&StelApp::getInstance().getScriptMgr(), SIGNAL(scriptDebug(const QString&)), this, SLOT(appendLogLine(const QString&)));
+	connect(&StelApp::getInstance().getScriptMgr(), SIGNAL(scriptOutput(const QString&)), this, SLOT(appendOutputLine(const QString&)));
 #ifndef ENABLE_STRATOSCRIPT_COMPAT
 	ui->preprocessSTSButton->setHidden(true);
 #else
@@ -140,6 +141,8 @@
 	if (ui->tabs->currentIndex() == 0)
 		ui->scriptEdit->clear();
 	else if (ui->tabs->currentIndex() == 1)
+		ui->logBrowser->clear();
+	else if (ui->tabs->currentIndex() == 2)
 		ui->outputBrowser->clear();
 }
 
@@ -179,7 +182,7 @@
 void ScriptConsole::runScript()
 {
 	ui->tabs->setCurrentIndex(1);
-	ui->outputBrowser->setHtml("");
+	ui->logBrowser->setHtml("");
 	QTemporaryFile file(QDir::tempPath() + "/stelscriptXXXXXX.ssc");
 	QString fileName;
 	if (file.open()) {
@@ -221,7 +224,7 @@
 void ScriptConsole::scriptEnded()
 {
 	qDebug() << "ScriptConsole::scriptEnded";
-	QString html = ui->outputBrowser->toHtml();
+	QString html = ui->logBrowser->toHtml();
 	appendLogLine(QString("Script finished at %1").arg(QDateTime::currentDateTime().toString()));
 	ui->runButton->setEnabled(true);
 	ui->stopButton->setEnabled(false);
@@ -229,6 +232,17 @@
 
 void ScriptConsole::appendLogLine(const QString& s)
 {
+	QString html = ui->logBrowser->toHtml();
+	html.replace(QRegExp("^\\s+"), "");
+	// if (html!="")
+	// 	html += "<br />";
+
+	html += s;
+	ui->logBrowser->setHtml(html);
+}
+
+void ScriptConsole::appendOutputLine(const QString& s)
+{
 	QString html = ui->outputBrowser->toHtml();
 	html.replace(QRegExp("^\\s+"), "");
 	// if (html!="")
@@ -238,6 +252,7 @@
 	ui->outputBrowser->setHtml(html);
 }
 
+
 void ScriptConsole::includeBrowse()
 {
 	ui->includeEdit->setText(QFileDialog::getExistingDirectory(&StelMainView::getInstance(), 
 
=== modified file 'src/gui/ScriptConsole.hpp'
--- src/gui/ScriptConsole.hpp	2012-02-13 18:59:16 +0000
+++ src/gui/ScriptConsole.hpp	2014-08-12 09:52:27 +0000
@@ -44,6 +44,7 @@
 	void preprocessScript();
 	void scriptEnded();
 	void appendLogLine(const QString& s);
+	void appendOutputLine(const QString& s);
 	void includeBrowse();
 	void quickRun(int idx);
 	void rowColumnChanged();
 
=== modified file 'src/gui/scriptConsole.ui'
--- src/gui/scriptConsole.ui	2012-02-20 10:28:26 +0000
+++ src/gui/scriptConsole.ui	2014-08-12 09:52:27 +0000
@@ -17,7 +17,16 @@
    <property name="spacing">
     <number>0</number>
    </property>
-   <property name="margin">
+   <property name="leftMargin">
+    <number>0</number>
+   </property>
+   <property name="topMargin">
+    <number>0</number>
+   </property>
+   <property name="rightMargin">
+    <number>0</number>
+   </property>
+   <property name="bottomMargin">
     <number>0</number>
    </property>
    <item>
@@ -139,7 +148,16 @@
       <property name="spacing">
        <number>0</number>
       </property>
-      <property name="margin">
+      <property name="leftMargin">
+       <number>0</number>
+      </property>
+      <property name="topMargin">
+       <number>0</number>
+      </property>
+      <property name="rightMargin">
+       <number>0</number>
+      </property>
+      <property name="bottomMargin">
        <number>0</number>
       </property>
       <item>
@@ -220,7 +238,7 @@
            </size>
           </property>
           <property name="toolTip">
-           <string>clear script</string>
+           <string>clear</string>
           </property>
           <property name="text">
            <string/>
@@ -372,7 +390,16 @@
           <string>Script</string>
          </attribute>
          <layout class="QVBoxLayout" name="verticalLayout_3">
-          <property name="margin">
+          <property name="leftMargin">
+           <number>0</number>
+          </property>
+          <property name="topMargin">
+           <number>0</number>
+          </property>
+          <property name="rightMargin">
+           <number>0</number>
+          </property>
+          <property name="bottomMargin">
            <number>0</number>
           </property>
           <item>
@@ -396,12 +423,50 @@
           </item>
          </layout>
         </widget>
+        <widget class="QWidget" name="logTab">
+         <attribute name="title">
+          <string>Log</string>
+         </attribute>
+         <layout class="QVBoxLayout" name="verticalLayout_5">
+          <property name="leftMargin">
+           <number>0</number>
+          </property>
+          <property name="topMargin">
+           <number>0</number>
+          </property>
+          <property name="rightMargin">
+           <number>0</number>
+          </property>
+          <property name="bottomMargin">
+           <number>0</number>
+          </property>
+          <item>
+           <widget class="QTextBrowser" name="logBrowser">
+            <property name="font">
+             <font>
+              <family>DejaVu Sans Mono</family>
+              <pointsize>8</pointsize>
+             </font>
+            </property>
+           </widget>
+          </item>
+         </layout>
+        </widget>
         <widget class="QWidget" name="outputTab">
          <attribute name="title">
           <string>Output</string>
          </attribute>
          <layout class="QVBoxLayout" name="verticalLayout_4">
-          <property name="margin">
+          <property name="leftMargin">
+           <number>0</number>
+          </property>
+          <property name="topMargin">
+           <number>0</number>
+          </property>
+          <property name="rightMargin">
+           <number>0</number>
+          </property>
+          <property name="bottomMargin">
            <number>0</number>
           </property>
           <item>
 
=== modified file 'src/main.cpp'
--- src/main.cpp	2014-08-01 18:48:38 +0000
+++ src/main.cpp	2014-08-12 09:52:27 +0000
@@ -25,6 +25,9 @@
 #include "CLIProcessor.hpp"
 #include "StelIniParser.hpp"
 #include "StelUtils.hpp"
+#ifndef DISABLE_SCRIPTING
+#include "StelScriptOutput.hpp"
+#endif
 
 #include <QDebug>
 
@@ -289,6 +292,14 @@
 	Q_ASSERT(confSettings);
 	qDebug() << "Config file is: " << QDir::toNativeSeparators(configFileFullPath);
 
+	#ifndef DISABLE_SCRIPTING
+	QString outputFile = StelFileMgr::getUserDir()+"/output.txt";
+	if (confSettings->value("main/use_separate_output_file", false).toBool())
+		outputFile = StelFileMgr::getUserDir()+"/output-"+QDateTime::currentDateTime().toString("yyyyMMdd-HHmmss")+".txt";
+	StelScriptOutput::init(outputFile);
+	#endif
+
+
 	// Override config file values from CLI.
 	CLIProcessor::parseCLIArgsPostConfig(argList, confSettings);
 
 
=== modified file 'src/scripting/StelMainScriptAPI.cpp'
--- src/scripting/StelMainScriptAPI.cpp	2014-01-15 07:13:40 +0000
+++ src/scripting/StelMainScriptAPI.cpp	2014-08-12 09:52:27 +0000
@@ -361,34 +361,34 @@
 }
 
 void StelMainScriptAPI::loadSkyImage(const QString& id, const QString& filename,
-						 double ra0, double dec0,
-						 double ra1, double dec1,
-						 double ra2, double dec2,
-						 double ra3, double dec3,
-								 double minRes, double maxBright, bool visible)
+				     double ra0, double dec0,
+				     double ra1, double dec1,
+				     double ra2, double dec2,
+				     double ra3, double dec3,
+				     double minRes, double maxBright, bool visible)
 {
 	QString path = "scripts/" + filename;
 	emit(requestLoadSkyImage(id, path, ra0, dec0, ra1, dec1, ra2, dec2, ra3, dec3, minRes, maxBright, visible));
 }
 
 void StelMainScriptAPI::loadSkyImage(const QString& id, const QString& filename,
-									 const QString& ra0, const QString& dec0,
-									 const QString& ra1, const QString& dec1,
-									 const QString& ra2, const QString& dec2,
-									 const QString& ra3, const QString& dec3,
-									 double minRes, double maxBright, bool visible)
+				     const QString& ra0, const QString& dec0,
+				     const QString& ra1, const QString& dec1,
+				     const QString& ra2, const QString& dec2,
+				     const QString& ra3, const QString& dec3,
+				     double minRes, double maxBright, bool visible)
 {
 	loadSkyImage(id, filename,
-				 StelUtils::getDecAngle(ra0) *180./M_PI, StelUtils::getDecAngle(dec0)*180./M_PI,
-				 StelUtils::getDecAngle(ra1) *180./M_PI, StelUtils::getDecAngle(dec1)*180./M_PI,
-				 StelUtils::getDecAngle(ra2) *180./M_PI, StelUtils::getDecAngle(dec2)*180./M_PI,
-				 StelUtils::getDecAngle(ra3) *180./M_PI, StelUtils::getDecAngle(dec3)*180./M_PI,
-				 minRes, maxBright, visible);
+		     StelUtils::getDecAngle(ra0) *180./M_PI, StelUtils::getDecAngle(dec0)*180./M_PI,
+		     StelUtils::getDecAngle(ra1) *180./M_PI, StelUtils::getDecAngle(dec1)*180./M_PI,
+		     StelUtils::getDecAngle(ra2) *180./M_PI, StelUtils::getDecAngle(dec2)*180./M_PI,
+		     StelUtils::getDecAngle(ra3) *180./M_PI, StelUtils::getDecAngle(dec3)*180./M_PI,
+		     minRes, maxBright, visible);
 }
 
 void StelMainScriptAPI::loadSkyImage(const QString& id, const QString& filename,
-									 double ra, double dec, double angSize, double rotation,
-									 double minRes, double maxBright, bool visible)
+				     double ra, double dec, double angSize, double rotation,
+				     double minRes, double maxBright, bool visible)
 {
 	Vec3f XYZ;
 	static const float RADIUS_NEB = 1.;
@@ -396,15 +396,15 @@
 	XYZ*=RADIUS_NEB;
 	float texSize = RADIUS_NEB * sin(angSize/2/60*M_PI/180);
 	Mat4f matPrecomp = Mat4f::translation(XYZ) *
-					   Mat4f::zrotation(ra*M_PI/180.) *
-					   Mat4f::yrotation(-dec*M_PI/180.) *
-					   Mat4f::xrotation(rotation*M_PI/180.);
+			   Mat4f::zrotation(ra*M_PI/180.) *
+			   Mat4f::yrotation(-dec*M_PI/180.) *
+			   Mat4f::xrotation(rotation*M_PI/180.);
 
 	Vec3f corners[4];
-		corners[0] = matPrecomp * Vec3f(0.f,-texSize,-texSize);
-		corners[1] = matPrecomp * Vec3f(0.f,-texSize, texSize);
-		corners[2] = matPrecomp * Vec3f(0.f, texSize,-texSize);
-		corners[3] = matPrecomp * Vec3f(0.f, texSize, texSize);
+	corners[0] = matPrecomp * Vec3f(0.f,-texSize,-texSize);
+	corners[1] = matPrecomp * Vec3f(0.f,-texSize, texSize);
+	corners[2] = matPrecomp * Vec3f(0.f, texSize,-texSize);
+	corners[3] = matPrecomp * Vec3f(0.f, texSize, texSize);
 
 	// convert back to ra/dec (radians)
 	Vec3f cornersRaDec[4];
@@ -412,38 +412,40 @@
 		StelUtils::rectToSphe(&cornersRaDec[i][0], &cornersRaDec[i][1], corners[i]);
 
 	loadSkyImage(id, filename,
-				 cornersRaDec[0][0]*180./M_PI, cornersRaDec[0][1]*180./M_PI,
-				 cornersRaDec[1][0]*180./M_PI, cornersRaDec[1][1]*180./M_PI,
-				 cornersRaDec[3][0]*180./M_PI, cornersRaDec[3][1]*180./M_PI,
-				 cornersRaDec[2][0]*180./M_PI, cornersRaDec[2][1]*180./M_PI,
-				 minRes, maxBright, visible);
+		     cornersRaDec[0][0]*180./M_PI, cornersRaDec[0][1]*180./M_PI,
+		     cornersRaDec[1][0]*180./M_PI, cornersRaDec[1][1]*180./M_PI,
+		     cornersRaDec[3][0]*180./M_PI, cornersRaDec[3][1]*180./M_PI,
+		     cornersRaDec[2][0]*180./M_PI, cornersRaDec[2][1]*180./M_PI,
+		     minRes, maxBright, visible);
 }
 
 
 
 void StelMainScriptAPI::loadSkyImage(const QString& id, const QString& filename,
-									 const QString& ra, const QString& dec, double angSize, double rotation,
-									 double minRes, double maxBright, bool visible)
+				     const QString& ra, const QString& dec,
+				     double angSize, double rotation,
+				     double minRes, double maxBright, bool visible)
 {
 	loadSkyImage(id, filename, StelUtils::getDecAngle(ra)*180./M_PI,
-				 StelUtils::getDecAngle(dec)*180./M_PI, angSize,
-				 rotation, minRes, maxBright, visible);
+		     StelUtils::getDecAngle(dec)*180./M_PI, angSize,
+		     rotation, minRes, maxBright, visible);
 }
 
 void StelMainScriptAPI::loadSkyImageAltAz(const QString& id, const QString& filename,
-						 double alt0, double azi0,
-						 double alt1, double azi1,
-						 double alt2, double azi2,
-						 double alt3, double azi3,
-								 double minRes, double maxBright, bool visible)
+					  double alt0, double azi0,
+					  double alt1, double azi1,
+					  double alt2, double azi2,
+					  double alt3, double azi3,
+					  double minRes, double maxBright, bool visible)
 {
 	QString path = "scripts/" + filename;
 	emit(requestLoadSkyImageAltAz(id, path, alt0, azi0, alt1, azi1, alt2, azi2, alt3, azi3, minRes, maxBright, visible));
 }
 
 void StelMainScriptAPI::loadSkyImageAltAz(const QString& id, const QString& filename,
-									 double alt, double azi, double angSize, double rotation,
-									 double minRes, double maxBright, bool visible)
+					  double alt, double azi,
+					  double angSize, double rotation,
+					  double minRes, double maxBright, bool visible)
 {
 	Vec3f XYZ;
 	static const float RADIUS_NEB = 1.;
@@ -452,15 +454,15 @@
 	XYZ*=RADIUS_NEB;
 	float texSize = RADIUS_NEB * sin(angSize/2/60*M_PI/180);
 	Mat4f matPrecomp = Mat4f::translation(XYZ) *
-					   Mat4f::zrotation((180-azi)*M_PI/180.) *
-					   Mat4f::yrotation(-alt*M_PI/180.) *
-					   Mat4f::xrotation((rotation+90)*M_PI/180.);
+			   Mat4f::zrotation((180-azi)*M_PI/180.) *
+			   Mat4f::yrotation(-alt*M_PI/180.) *
+			   Mat4f::xrotation((rotation+90)*M_PI/180.);
 
 	Vec3f corners[4];
-		corners[0] = matPrecomp * Vec3f(0.f,-texSize,-texSize);
-		corners[1] = matPrecomp * Vec3f(0.f,-texSize, texSize);
-		corners[2] = matPrecomp * Vec3f(0.f, texSize,-texSize);
-		corners[3] = matPrecomp * Vec3f(0.f, texSize, texSize);
+	corners[0] = matPrecomp * Vec3f(0.f,-texSize,-texSize);
+	corners[1] = matPrecomp * Vec3f(0.f,-texSize, texSize);
+	corners[2] = matPrecomp * Vec3f(0.f, texSize,-texSize);
+	corners[3] = matPrecomp * Vec3f(0.f, texSize, texSize);
 
 	// convert back to alt/azi (radians)
 	Vec3f cornersAltAz[4];
@@ -468,11 +470,11 @@
 		StelUtils::rectToSphe(&cornersAltAz[i][0], &cornersAltAz[i][1], corners[i]);
 
 	loadSkyImageAltAz(id, filename,
-				 cornersAltAz[0][0]*180./M_PI, cornersAltAz[0][1]*180./M_PI,
-				 cornersAltAz[1][0]*180./M_PI, cornersAltAz[1][1]*180./M_PI,
-				 cornersAltAz[3][0]*180./M_PI, cornersAltAz[3][1]*180./M_PI,
-				 cornersAltAz[2][0]*180./M_PI, cornersAltAz[2][1]*180./M_PI,
-				 minRes, maxBright, visible);
+			  cornersAltAz[0][0]*180./M_PI, cornersAltAz[0][1]*180./M_PI,
+			  cornersAltAz[1][0]*180./M_PI, cornersAltAz[1][1]*180./M_PI,
+			  cornersAltAz[3][0]*180./M_PI, cornersAltAz[3][1]*180./M_PI,
+			  cornersAltAz[2][0]*180./M_PI, cornersAltAz[2][1]*180./M_PI,
+			  minRes, maxBright, visible);
 }
 
 void StelMainScriptAPI::removeSkyImage(const QString& id)
@@ -622,6 +624,11 @@
 	StelApp::getInstance().getScriptMgr().debug(s);
 }
 
+void StelMainScriptAPI::output(const QString &s)
+{
+	StelApp::getInstance().getScriptMgr().output(s);
+}
+
 double StelMainScriptAPI::jdFromDateString(const QString& dt, const QString& spec)
 {
 	StelCore *core = StelApp::getInstance().getCore();
 
=== modified file 'src/scripting/StelMainScriptAPI.hpp'
--- src/scripting/StelMainScriptAPI.hpp	2013-08-04 06:13:29 +0000
+++ src/scripting/StelMainScriptAPI.hpp	2014-08-12 09:52:27 +0000
@@ -614,6 +614,10 @@
 	//! @param s the message to be displayed on the console.
 	void debug(const QString& s);
 
+	//! print an output message from script
+	//! @param s the message to be displayed on the output file.
+	void output(const QString& s);
+
 	//! Get the current application language.
 	//! @return two letter language code, e.g. "en", or "de" and so on.
 	QString getAppLanguage();
 
=== modified file 'src/scripting/StelScriptMgr.cpp'
--- src/scripting/StelScriptMgr.cpp	2014-07-13 05:52:52 +0000
+++ src/scripting/StelScriptMgr.cpp	2014-08-12 09:52:27 +0000
@@ -19,6 +19,7 @@
  */
 
 
+#include "StelScriptOutput.hpp"
 #include "StelScriptMgr.hpp"
 #include "StelMainScriptAPI.hpp"
 #include "StelModuleMgr.hpp"
@@ -423,6 +424,12 @@
 	emit(scriptDebug(msg));
 }
 
+void StelScriptMgr::output(const QString &msg)
+{
+	StelScriptOutput::writeLog(msg);
+	emit(scriptOutput(msg));
+}
+
 void StelScriptMgr::scriptEnded()
 {
 	if (engine.hasUncaughtException())
 
=== modified file 'src/scripting/StelScriptMgr.hpp'
--- src/scripting/StelScriptMgr.hpp	2014-04-10 02:47:02 +0000
+++ src/scripting/StelScriptMgr.hpp	2014-08-12 09:52:27 +0000
@@ -136,10 +136,14 @@
 	//! execution rate.
 	double getScriptRate();
 
-	//! cause the emission of the scriptDebug signal.  This is so that functions in
+	//! cause the emission of the scriptDebug signal. This is so that functions in
 	//! StelMainScriptAPI can explicitly send information to the ScriptConsole
 	void debug(const QString& msg);
 
+	//! cause the emission of the scriptOutput signal. This is so that functions in
+	//! StelMainScriptAPI can explicitly send information to the ScriptConsole
+	void output(const QString& msg);
+
 	//! Pause a running script.
 	void pauseScript();
 
@@ -155,7 +159,9 @@
 	//! Notification when a script has stopped running 
 	void scriptStopped();
 	//! Notification of a script event - warnings, current execution line etc.
-	void scriptDebug(const QString&);
+	void scriptDebug(const QString&);	
+	//! Notification of a script event - output line.
+	void scriptOutput(const QString&);
 
 private:
 	// Utility functions for preprocessor
 
=== added file 'src/scripting/StelScriptOutput.cpp'
--- src/scripting/StelScriptOutput.cpp	1970-01-01 00:00:00 +0000
+++ src/scripting/StelScriptOutput.cpp	2014-08-12 09:52:27 +0000
@@ -0,0 +1,44 @@
+/*
+ * Stellarium
+ * Copyright (C) 2014 Alexander Wolf
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
+ */
+
+#include "StelScriptOutput.hpp"
+#include <QDebug>
+
+// Init statics variables.
+QFile StelScriptOutput::outputFile;
+QString StelScriptOutput::outputText;
+
+void StelScriptOutput::init(const QString& outputFilePath)
+{
+	outputFile.setFileName(outputFilePath);
+	if (!outputFile.open(QIODevice::WriteOnly | QIODevice::Truncate | QIODevice::Text | QIODevice::Unbuffered))
+		qDebug() << "ERROR: Cannot open output.txt file";
+}
+
+void StelScriptOutput::deinit()
+{
+	outputFile.close();
+}
+
+void StelScriptOutput::writeLog(QString msg)
+{
+	msg += "\n";
+	outputFile.write(qPrintable(msg), msg.size());
+	outputText += msg;
+}
 
=== added file 'src/scripting/StelScriptOutput.hpp'
--- src/scripting/StelScriptOutput.hpp	1970-01-01 00:00:00 +0000
+++ src/scripting/StelScriptOutput.hpp	2014-08-12 09:52:27 +0000
@@ -0,0 +1,50 @@
+/*
+ * Stellarium
+ * Copyright (C) 2014 Alexander Wolf
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335, USA.
+ */
+
+#ifndef STELSCRIPTOUTPUT_HPP
+#define STELSCRIPTOUTPUT_HPP
+
+#include "config.h"
+
+#include <QString>
+#include <QFile>
+
+//! @class StelScriptOutput
+//! Class wit only static members used to manage output for Stellarium scripts.
+class StelScriptOutput
+{
+public:
+	//! Create and initialize the log file.
+	//! Prepend system information before any output.
+	static void init(const QString& outputFilePath);
+
+	//! Deinitialize the output file.
+	//! Must be called after init() was called.
+	static void deinit();
+
+	//! Write the message plus a newline to the output file at $USERDIR/output.txt.
+	//! @param msg message to write.
+	static void writeLog(QString msg);
+
+private:
+	static QFile outputFile;
+	static QString outputText;
+};
+
+#endif // STELSCRIPTOUTPUT_HPP