# -*- coding: utf-8 -*- """ *************************************************************************** ScriptAlgorithm.py --------------------- Date : August 2012 Copyright : (C) 2012 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. * * * *************************************************************************** """ __author__ = 'Victor Olaya' __date__ = 'August 2012' __copyright__ = '(C) 2012, Victor Olaya' # This will get replaced with a git SHA1 when you do a git archive __revision__ = '$Format:%H$' import os from PyQt4 import QtGui from sextante.core.GeoAlgorithm import GeoAlgorithm from sextante.parameters.ParameterRaster import ParameterRaster from sextante.parameters.ParameterTable import ParameterTable from sextante.parameters.ParameterVector import ParameterVector from sextante.parameters.ParameterMultipleInput import ParameterMultipleInput from sextante.script.WrongScriptException import WrongScriptException from sextante.outputs.OutputTable import OutputTable from sextante.outputs.OutputVector import OutputVector from sextante.outputs.OutputRaster import OutputRaster from sextante.parameters.ParameterString import ParameterString from sextante.parameters.ParameterNumber import ParameterNumber from sextante.parameters.ParameterBoolean import ParameterBoolean from sextante.parameters.ParameterSelection import ParameterSelection from sextante.parameters.ParameterTableField import ParameterTableField from sextante.outputs.OutputHTML import OutputHTML from sextante.parameters.ParameterExtent import ParameterExtent from sextante.parameters.ParameterFile import ParameterFile from sextante.outputs.OutputFile import OutputFile import sys from sextante.gui.Help2Html import Help2Html class ScriptAlgorithm(GeoAlgorithm): def __init__(self, descriptionFile, script=None): '''The script parameter can be used to directly pass the code of the script without a file. This is to be used from the script edition dialog, but should not be used in other cases''' GeoAlgorithm.__init__(self) self.script = script self.descriptionFile = descriptionFile if script is not None: self.defineCharacteristicsFromScript() if descriptionFile is not None: self.defineCharacteristicsFromFile() def getCopy(self): newone = ScriptAlgorithm(self.descriptionFile) newone.provider = self.provider return newone def getIcon(self): return QtGui.QIcon(os.path.dirname(__file__) + "/../images/script.png") def defineCharacteristicsFromFile(self): self.script="" self.silentOutputs = [] filename = os.path.basename(self.descriptionFile) self.name = filename[:filename.rfind(".")].replace("_", " ") self.group = "User scripts" lines = open(self.descriptionFile) line = lines.readline() while line != "": if line.startswith("##"): try: self.processParameterLine(line.strip("\n")) except: raise WrongScriptException("Could not load script: " + self.descriptionFile +"\n" + "Problem with line: " + line) self.script += line line = lines.readline() lines.close() def defineCharacteristicsFromScript(self): lines = self.script.split("\n") self.silentOutputs = [] self.name = "[Unnamed algorithm]" self.group = "User scripts" for line in lines: if line.startswith("##"): try: self.processParameterLine(line.strip("\n")) except: pass def createDescriptiveName(self, s): return s.replace("_", " ") def processParameterLine(self,line): param = None out = None line = line.replace("#", ""); tokens = line.split("="); desc = self.createDescriptiveName(tokens[0]) if tokens[1].lower().strip() == "group": self.group = tokens[0] return if tokens[1].lower().strip() == "raster": param = ParameterRaster(tokens[0], desc, False) elif tokens[1].lower().strip() == "vector": param = ParameterVector(tokens[0], desc,ParameterVector.VECTOR_TYPE_ANY) elif tokens[1].lower().strip() == "table": param = ParameterTable(tokens[0], desc, False) elif tokens[1].lower().strip() == "multiple raster": param = ParameterMultipleInput(tokens[0], desc, ParameterMultipleInput.TYPE_RASTER) param.optional = False elif tokens[1].lower().strip() == "multiple vector": param = ParameterMultipleInput(tokens[0], desc, ParameterMultipleInput.TYPE_VECTOR_ANY) param.optional = False elif tokens[1].lower().strip().startswith("selection"): options = tokens[1].strip()[len("selection"):].split(";") param = ParameterSelection(tokens[0], desc, options); elif tokens[1].lower().strip().startswith("boolean"): default = tokens[1].strip()[len("boolean")+1:] param = ParameterBoolean(tokens[0], desc, default) elif tokens[1].lower().strip() == "extent": param = ParameterExtent(tokens[0], desc) elif tokens[1].lower().strip() == "file": param = ParameterFile(tokens[0], desc, False) elif tokens[1].lower().strip() == "folder": param = ParameterFile(tokens[0], desc, True) elif tokens[ 1].lower().strip().startswith("number"): default = tokens[1].strip()[len("number")+1:] param = ParameterNumber(tokens[0], desc, default=default) elif tokens[1].lower().strip().startswith("field"): field = tokens[1].strip()[len("field")+1:] found = False for p in self.parameters: if p.name == field: found = True break if found: param = ParameterTableField(tokens[0], tokens[0], field) elif tokens[1].lower().strip().startswith("string"): default = tokens[1].strip()[len("string")+1:] param = ParameterString(tokens[0], desc, default) elif tokens[1].lower().strip().startswith("output raster"): out = OutputRaster() elif tokens[1].lower().strip().startswith("output vector"): out = OutputVector() elif tokens[1].lower().strip().startswith("output table"): out = OutputTable() elif tokens[1].lower().strip().startswith("output html"): out = OutputHTML() elif tokens[1].lower().strip().startswith("output file"): out = OutputFile() if param != None: self.addParameter(param) elif out != None: out.name = tokens[0] out.description = tokens[0] self.addOutput(out) else: raise WrongScriptException("Could not load script:" + self.descriptionFile + ".\n Problem with line \"" + line + "\"") def processAlgorithm(self, progress): script = "from sextante.core.Sextante import Sextante\n" for param in self.parameters: script += param.name + "=" + param.getValueAsCommandLineParameter() + "\n" for out in self.outputs: script += out.name + "=" + out.getValueAsCommandLineParameter() + "\n" script+=self.script redirection = Redirection(progress) sys.stdout = redirection exec(script) sys.stdout = sys.__stdout__ def helpFile(self): helpfile = self.descriptionFile + ".help" if os.path.exists(helpfile): h2h = Help2Html() return h2h.getHtmlFile(self, helpfile) else: return None class Redirection(): def __init__(self, progress): self.progress = progress def write(self, string): try: n = int(string) self.progress.setPercentage(n) except: self.progress.setText(string) pass