[processing] fixed text and html output in GRASS algorithms

This changes the way text outputs are handled.
Now the output of the command is piped to a file, and with that file, the raw and HTML outputs are generated.

More formatting for the HTML file should be added in the future, since it is now rather basic

fixes #6379

Author: volaya

python/plugins/processing/algs/grass/CMakeLists.txt

@@ -2,7 +2,5 @@ FILE(GLOB PY_FILES *.py)
 FILE(GLOB OTHER_FILES grass.txt)
 FILE(GLOB DESCR_FILES description/*.txt)
 
-ADD_SUBDIRECTORY(ext)
-
 PLUGIN_INSTALL(processing algs/grass ${PY_FILES} ${OTHER_FILES})
 PLUGIN_INSTALL(processing algs/grass/description ${DESCR_FILES})

python/plugins/processing/algs/grass/GrassAlgorithm.py

@@ -69,10 +69,6 @@ def __init__(self, descriptionfile):
         self.defineCharacteristicsFromFile()
         self.numExportedLayers = 0
 
-        # GRASS console output, needed to do postprocessing in case GRASS
-        # dumps results to the console
-        self.consoleOutput = []
-
     def getCopy(self):
         newone = GrassAlgorithm(self.descriptionFile)
         newone.provider = self.provider
@@ -125,7 +121,7 @@ def defineCharacteristicsFromFile(self):
                     if isinstance(parameter, ParameterVector):
                         hasVectorInput = True
                     if isinstance(parameter, ParameterMultipleInput) \
-                       and parameter.datatype < 3:
+                                   and parameter.datatype < 3:
                         hasVectorInput = True
                 elif line.startswith('*Parameter'):
                     param = getParameterFromString(line[1:])
@@ -138,6 +134,9 @@ def defineCharacteristicsFromFile(self):
                         hasRasterOutput = True
                     elif isinstance(output, OutputVector):
                         vectorOutputs += 1
+                    if isinstance(output, OutputHTML):
+                        self.addOutput(OutputFile("rawoutput", output.description +
+                                                  " (raw output)", "txt"))
                 line = lines.readline().strip('\n').strip()
             except Exception, e:
                 ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
@@ -320,17 +319,10 @@ def processAlgorithm(self, progress):
         uniqueSufix = str(uuid.uuid4()).replace('-', '')
         for out in self.outputs:
             if isinstance(out, OutputFile):
-                if out.name == 'outputtext':
-                    # The 'outputtext' file is generated by piping output
-                    # from GRASS, is not an actual grass command
-                    command += ' > ' + out.value
-                else:
-                    command += ' ' + out.name + '="' + out.value + '"'
+                command += ' > ' + out.value
             elif not isinstance(out, OutputHTML):
-                # Html files are not generated by GRASS, only by us to
-                # decorate GRASS output, so we skip them. An output name
-                # to make sure it is unique if the session uses this
-                # algorithm several times.
+                # We add an output name to make sure it is unique if the session
+                # uses this algorithm several times.
                 uniqueOutputName = out.name + uniqueSufix
                 command += ' ' + out.name + '=' + uniqueOutputName
 
@@ -394,9 +386,14 @@ def processAlgorithm(self, progress):
             loglines.append(line)
         if ProcessingConfig.getSetting(GrassUtils.GRASS_LOG_COMMANDS):
             ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
-        self.consoleOutput = GrassUtils.executeGrass(commands, progress,
-                outputCommands)
-        self.postProcessResults()
+        GrassUtils.executeGrass(commands, progress, outputCommands)
+
+        for out in self.outputs:
+            if isinstance(out, OutputHTML):
+                with open(self.getOutputFromName("rawoutput").value) as f:
+                    rawOutput = "".join(f.readlines())
+                with open(out.value, "w") as f:
+                    f.write("<pre>%s</pre>" % rawOutput)
 
         # If the session has been created outside of this algorithm, add
         # the new GRASS layers to it otherwise finish the session
@@ -405,15 +402,6 @@ def processAlgorithm(self, progress):
         else:
             GrassUtils.endGrassSession()
 
-    def postProcessResults(self):
-        name = self.commandLineName().replace('.', '_')[len('grass:'):]
-        try:
-            module = importlib.import_module('processing.algs.grass.ext.' + name)
-        except ImportError:
-            return
-        if hasattr(module, 'postProcessResults'):
-            func = getattr(module, 'postProcessResults')
-            func(self)
 
     def exportVectorLayer(self, orgFilename):
 

python/plugins/processing/algs/grass/GrassUtils.py

@@ -319,7 +319,8 @@ def executeGrass(commands, progress, outputCommands=None):
 
         if ProcessingConfig.getSetting(GrassUtils.GRASS_LOG_CONSOLE):
             ProcessingLog.addToLog(ProcessingLog.LOG_INFO, loglines)
-        return loglines
+
+
 
     # GRASS session is used to hold the layers already exported or
     # produced in GRASS between multiple calls to GRASS algorithms.

python/plugins/processing/algs/grass/description/r.horizon.height.txt

@@ -9,4 +9,3 @@ ParameterNumber|maxdistance|The maximum distance to consider when finding the ho
 ParameterString|dist|Sampling distance step coefficient (0.5-1.5)|1.0
 ParameterBoolean|-d|Write output in degrees (default is radians)|False
 OutputHTML|html|Horizon
-OutputFile|outputtext|Horizon (text)

python/plugins/processing/algs/grass/description/r.quantile.txt

@@ -4,5 +4,4 @@ Raster (r.*)
 ParameterRaster|input|Input raster layer|False
 ParameterNumber|quantiles|Number of quantiles|2|None|4
 *ParameterBoolean|-r|Generate recode rules based on quantile-defined intervals|False
-OutputHTML|html|Quantiles
-OutputFile|outputtext|Quantiles (text)
+OutputHTML|html|Quantiles