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[Processing] Add optional capabilities to R scripts

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rldhont committed May 31, 2016
1 parent d5befee commit f844d6bed07f3c211e2787ba595e9b05b9c3bb16
Showing with 98 additions and 59 deletions.
  1. +98 −59 python/plugins/processing/algs/r/RAlgorithm.py
@@ -153,84 +153,123 @@ def processParameterLine(self, line):
if tokens[1].lower().strip() == 'group':
self.group = tokens[0]
return
if tokens[1].lower().strip().startswith('raster'):
param = ParameterRaster(tokens[0], desc, False)
elif tokens[1].lower().strip() == 'vector':
param = ParameterVector(tokens[0], desc,

if tokens[1].lower().strip().startswith('output'):
outToken = tokens[1].strip()[len('output') + 1:]
out = self.processOutputParameterToken(outToken)

elif tokens[1].lower().strip().startswith('optional'):
optToken = tokens[1].strip()[len('optional') + 1:]
param = self.processInputParameterToken(optToken, tokens[0])
if param:
param.optional = True

else:
param = self.processInputParameterToken(tokens[1], tokens[0])

if param is not None:
self.addParameter(param)
elif out is not None:
out.name = tokens[0]
out.description = tokens[0]
self.addOutput(out)
else:
raise WrongScriptException(
self.tr('Could not load R script: %s.\n Problem with line %s' % (self.descriptionFile, line)))

def processInputParameterToken(self, token, name):
param = None

desc = self.createDescriptiveName(name)

if token.lower().strip().startswith('raster'):
param = ParameterRaster(name, desc, False)
elif token.lower().strip() == 'vector':
param = ParameterVector(name, desc,
[ParameterVector.VECTOR_TYPE_ANY])
elif tokens[1].lower().strip() == 'vector point':
param = ParameterVector(tokens[0], desc,
elif token.lower().strip() == 'vector point':
param = ParameterVector(name, desc,
[ParameterVector.VECTOR_TYPE_POINT])
elif tokens[1].lower().strip() == 'vector line':
param = ParameterVector(tokens[0], desc,
elif token.lower().strip() == 'vector line':
param = ParameterVector(name, desc,
[ParameterVector.VECTOR_TYPE_LINE])
elif tokens[1].lower().strip() == 'vector polygon':
param = ParameterVector(tokens[0], desc,
elif token.lower().strip() == 'vector polygon':
param = ParameterVector(name, desc,
[ParameterVector.VECTOR_TYPE_POLYGON])
elif tokens[1].lower().strip() == 'table':
param = ParameterTable(tokens[0], desc, False)
elif tokens[1].lower().strip().startswith('multiple raster'):
param = ParameterMultipleInput(tokens[0], desc,
elif token.lower().strip() == 'table':
param = ParameterTable(name, desc, False)
elif token.lower().strip().startswith('multiple raster'):
param = ParameterMultipleInput(name, desc,
ParameterMultipleInput.TYPE_RASTER)
param.optional = False
elif tokens[1].lower().strip() == 'multiple vector':
param = ParameterMultipleInput(tokens[0], desc,
elif token.lower().strip() == 'multiple vector':
param = ParameterMultipleInput(name, 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().startswith('number'):
try:
default = float(tokens[1].strip()[len('number') + 1:])
param = ParameterNumber(tokens[0], desc, default=default)
except:
raise WrongScriptException(
self.tr('Could not load R script: %s.\n Problem with line %s' % (self.descriptionFile, line)))
elif tokens[1].lower().strip().startswith('field'):
field = tokens[1].strip()[len('field') + 1:]
elif token.lower().strip().startswith('selection'):
options = token.strip()[len('selection'):].split(';')
param = ParameterSelection(name, desc, options)
elif token.lower().strip().startswith('boolean'):
default = token.strip()[len('boolean') + 1:]
if default:
param = ParameterBoolean(name, desc, default)
else:
param = ParameterBoolean(name, desc)
elif token.lower().strip().startswith('number'):
default = token.strip()[len('number') + 1:]
if default:
param = ParameterNumber(name, desc, default=default)
else:
param = ParameterNumber(name, desc)
elif token.lower().strip().startswith('field'):
field = token.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() == 'extent':
param = ParameterExtent(tokens[0], desc)
elif tokens[1].lower().strip() == 'crs':
param = ParameterCrs(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('string'):
default = tokens[1].strip()[len('string') + 1:]
param = ParameterString(tokens[0], desc, default)
elif tokens[1].lower().strip().startswith('longstring'):
default = tokens[1].strip()[len('longstring') + 1:]
param = ParameterString(tokens[0], desc, default, multiline=True)
elif tokens[1].lower().strip().startswith('output raster'):
param = ParameterTableField(name, desc, field)
elif token.lower().strip() == 'extent':
param = ParameterExtent(name, desc)
elif token.lower().strip() == 'file':
param = ParameterFile(name, desc, False)
elif token.lower().strip() == 'folder':
param = ParameterFile(name, desc, True)
elif token.lower().strip().startswith('string'):
default = token.strip()[len('string') + 1:]
if default:
param = ParameterString(name, desc, default)
else:
param = ParameterString(name, desc)
elif token.lower().strip().startswith('longstring'):
default = token.strip()[len('longstring') + 1:]
if default:
param = ParameterString(name, desc, default, multiline=True)
else:
param = ParameterString(name, desc, multiline=True)
elif token.lower().strip() == 'crs':
default = token.strip()[len('crs') + 1:]
if default:
param = ParameterCrs(name, desc, default)
else:
param = ParameterCrs(name, desc)

return param

def processOutputParameterToken(self, token):
out = None

if token.lower().strip().startswith('raster'):
out = OutputRaster()
elif tokens[1].lower().strip().startswith('output vector'):
elif token.lower().strip().startswith('vector'):
out = OutputVector()
elif tokens[1].lower().strip().startswith('output table'):
elif token.lower().strip().startswith('table'):
out = OutputTable()
elif tokens[1].lower().strip().startswith('output file'):
elif token.lower().strip().startswith('file'):
out = OutputFile()

if param is not None:
self.addParameter(param)
elif out is not None:
out.name = tokens[0]
out.description = tokens[0]
self.addOutput(out)
else:
raise WrongScriptException(
self.tr('Could not load R script: %s.\n Problem with line %s' % (self.descriptionFile, line)))
return out

def processAlgorithm(self, progress):
if isWindows():

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