[sextante] reintroduced Model->Python conversion

Author: volaya

python/plugins/sextante/modeler/ModelerAlgorithmProvider.py

@@ -16,6 +16,7 @@
 *                                                                         *
 ***************************************************************************
 """
+
 __author__ = 'Victor Olaya'
 __date__ = 'August 2012'
 __copyright__ = '(C) 2012, Victor Olaya'
@@ -26,6 +27,7 @@
 from PyQt4.QtGui import *
 import os.path
 from sextante.core.SextanteConfig import SextanteConfig, Setting
+from sextante.modeler.SaveAsPythonScriptAction import SaveAsPythonScriptAction
 from sextante.core.SextanteLog import SextanteLog
 from sextante.modeler.ModelerUtils import ModelerUtils
 from sextante.modeler.ModelerAlgorithm import ModelerAlgorithm
@@ -41,7 +43,7 @@ class ModelerAlgorithmProvider(AlgorithmProvider):
     def __init__(self):
         AlgorithmProvider.__init__(self)
         self.actions = [CreateNewModelAction()]
-        self.contextMenuActions = [EditModelAction(), DeleteModelAction()]
+        self.contextMenuActions = [EditModelAction(), DeleteModelAction(), SaveAsPythonScriptAction()]
 
     def initializeSettings(self):
         AlgorithmProvider.initializeSettings(self)

python/plugins/sextante/modeler/SaveAsPythonScriptAction.py

@@ -0,0 +1,116 @@
+# -*- coding: utf-8 -*-
+
+"""
+***************************************************************************
+    SaveAsPythonScriptAction.py
+    ---------------------
+    Date                 : April 2013
+    Copyright            : (C) 2013 by Victor Olaya
+    Email                : volayaf at gmail dot com
+***************************************************************************
+*                                                                         *
+*   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.                                   *
+*                                                                         *
+***************************************************************************
+"""
+import sys
+from sextante.parameters.ParameterMultipleInput import ParameterMultipleInput
+
+__author__ = 'Victor Olaya'
+__date__ = 'April 2013'
+__copyright__ = '(C) 2013, Victor Olaya'
+# This will get replaced with a git SHA1 when you do a git archive
+__revision__ = '$Format:%H$'
+
+from sextante.gui.ContextAction import ContextAction
+from sextante.modeler.ModelerAlgorithm import ModelerAlgorithm,\
+    AlgorithmAndParameter
+from sextante.script.ScriptUtils import ScriptUtils
+from PyQt4.QtCore import *
+from PyQt4.QtGui import *
+
+class SaveAsPythonScriptAction(ContextAction):
+
+    def __init__(self):
+        self.name="Save as Python script"
+
+    def isEnabled(self):
+        return isinstance(self.alg, ModelerAlgorithm)
+
+    def execute(self):
+        filename = str(QFileDialog.getSaveFileName(None, "Save Script", ScriptUtils.scriptsFolder(), "Python scripts (*.py)"))
+
+        if filename:
+            if not filename.endswith(".py"):
+                filename += ".py"
+            text = self.translateToPythonCode(self.alg)            
+            try:
+                fout = open(filename, "w")
+                fout.write(text)
+                fout.close()
+                if filename.replace("\\","/").startswith(ScriptUtils.scriptsFolder().replace("\\","/")):
+                    self.toolbox.updateTree()
+            except:
+                QMessageBox.warning(self,
+                                    self.tr("I/O error"),
+                                    self.tr("Unable to save edits. Reason:\n %1").arg(unicode(sys.exc_info()[1]))
+                                   )         
+                
+    def translateToPythonCode(self, model):
+        s = ["##" + model.name + "=name"]
+        for param in model.parameters:
+            s.append(str(param.getAsScriptCode().lower()))
+        i = 0
+        for outs in model.algOutputs:
+            for out in outs.keys():
+                if outs[out]:
+                    s.append("##" + out.lower() + "_alg" + str(i) +"=" + model.getOutputType(i, out))
+            i += 1
+        i = 0
+        iMultiple = 0
+        for alg in model.algs:
+            multiple= []
+            runline = "outputs_" + str(i) + "=Sextante.runalg(\"" + alg.commandLineName() + "\""
+            for param in alg.parameters:
+                aap = model.algParameters[i][param.name]
+                if aap == None:
+                    runline += ", None"
+                elif isinstance(param, ParameterMultipleInput):
+                    value = model.paramValues[aap.param]
+                    tokens = value.split(";")
+                    layerslist = []
+                    for token in tokens:
+                        iAlg, paramname = token.split("|")
+                        if float(iAlg) == float(AlgorithmAndParameter.PARENT_MODEL_ALGORITHM):
+                            if model.ismodelparam(paramname):
+                                value = paramname.lower()
+                            else:
+                                value = model.paramValues[paramname]
+                        else:
+                            value = "outputs_" + str(iAlg) + "['" + paramname +"']"
+                        layerslist.append(str(value))
+
+                    multiple.append("multiple_" + str(iMultiple) +"=[" + ",".join(layerslist) + "]")
+                    runline +=", \";\".join(multiple_" + str(iMultiple) + ") "
+                else:
+                    if float(aap.alg) == float(AlgorithmAndParameter.PARENT_MODEL_ALGORITHM):
+                        if model.ismodelparam(aap.param):
+                            runline += ", " + aap.param.lower()
+                        else:
+                            runline += ", " + str(model.paramValues[aap.param])
+                    else:
+                        runline += ", outputs_" + str(aap.alg) + "['" + aap.param +"']"
+            for out in alg.outputs:
+                value = model.algOutputs[i][out.name]
+                if value:
+                    name = out.name.lower() + "_alg" + str(i)
+                else:
+                    name = str(None)
+                runline += ", " + name
+            i += 1
+            s += multiple
+            s.append(str(runline + ")"))
+        return "\n".join(s)