""" @package workspace @brief Open/save workspace definition file Classes: - ProcessWorkspaceFile - WriteWorkspaceFile - ProcessGrcFile (C) 2007-2008 by the GRASS Development Team This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details. @author Martin Landa @date 2007-2008 """ import os import wx ### for gxw (workspace file) parsering # xmlproc not available on Mac OS # from xml.parsers.xmlproc import xmlproc # from xml.parsers.xmlproc import xmlval # from xml.parsers.xmlproc import xmldtd import xml.sax import xml.sax.handler HandlerBase=xml.sax.handler.ContentHandler from xml.sax import make_parser class ProcessWorkspaceFile(HandlerBase): """ A SAX handler for the GXW XML file, as defined in grass-gxw.dtd. """ def __init__(self): self.inGxw = False self.inLayer = False self.inTask = False self.inParameter = False self.inFlag = False self.inValue = False self.inGroup = False self.inDisplay = False self.inLayerManager = False # # Nviz section # self.inNviz = False self.inAttribute = False self.refAttribute = None # # layer manager properties # self.layerManager = {} self.layerManager['pos'] = None # window position self.layerManager['size'] = None # window size # list of mapdisplays self.displays = [] # list of map layers self.layers = [] self.cmd = [] self.displayIndex = -1 # first display has index '0' def startElement(self, name, attrs): if name == 'gxw': self.inGxw = True elif name == 'display': self.inDisplay = True self.displayIndex += 1 # window position and size posAttr = attrs.get('dim', '') if posAttr: posVal = map(int, posAttr.split(',')) try: pos = (posVal[0], posVal[1]) size = (posVal[2], posVal[3]) except: pos = None size = None else: pos = None size = None extentAttr = attrs.get('extent', '') if extentAttr: # w, s, e, n extent = map(float, extentAttr.split(',')) else: extent = None self.displays.append({ "render" : bool(int(attrs.get('render', "0"))), "mode" : int(attrs.get('mode', 0)), "showCompExtent" : bool(int(attrs.get('showCompExtent', "0"))), "pos" : pos, "size" : size, "extent" : extent}) elif name == 'group': self.groupName = attrs.get('name', None) self.groupChecked = attrs.get('checked', None) self.layers.append({ "type" : 'group', "name" : self.groupName, "checked" : int(self.groupChecked), "opacity" : None, "cmd" : None, "group" : self.inGroup, "display" : self.displayIndex}) self.inGroup = True elif name == 'layer': self.inLayer = True self.layerType = attrs.get('type', None) self.layerName = attrs.get('name', None) self.layerChecked = attrs.get('checked', None) self.layerOpacity = attrs.get('opacity', None) self.layerSelected = False self.layerNviz = None self.cmd = [] elif name == 'task': self.inTask = True; name = attrs.get('name', None) self.cmd.append(name) elif name == 'parameter': self.inParameter = True; self.parameterName = attrs.get('name', None) elif name == 'value': self.inValue = True self.value = '' elif name == 'flag': self.inFlag = True; name = attrs.get('name', None) self.cmd.append('-' + name) elif name == 'selected': if self.inLayer: self.layerSelected = True; elif name == 'layer_manager': self.inLayerManager = True posAttr = attrs.get('dim', '') if posAttr: posVal = map(int, posAttr.split(',')) try: self.layerManager['pos'] = (posVal[0], posVal[1]) self.layerManager['size'] = (posVal[2], posVal[3]) except: pass else: pass # # Nviz section # elif name == 'nviz': self.inNviz = True # init nviz layer properties self.layerNviz = {} self.layerNviz['view'] = None self.layerNviz['surface'] = {} for sec in ('attribute', 'draw', 'mask', 'position'): self.layerNviz['surface'][sec] = {} self.layerNviz['vector'] = {} for sec in ('lines', ): self.layerNviz['vector'][sec] = {} elif name == 'attribute': self.inAttribute = True tagName = str(name) attrbName = str(attrs.get('name', '')) self.layerNviz['surface'][tagName][attrbName] = {} if attrs.get('map', '0'): self.layerNviz['surface'][tagName][attrbName]['map'] = False else: self.layerNviz['surface'][tagName][attrbName]['map'] = True self.refAttribute = self.layerNviz['surface'][tagName][attrbName] def endElement(self, name): if name == 'gxw': self.inGxw = False elif name == 'display': self.inDisplay = False elif name == 'group': self.inGroup = False self.groupName = self.groupChecked = None elif name == 'layer': self.inLayer = False self.layers.append({ "type" : self.layerType, "name" : self.layerName, "checked" : int(self.layerChecked), "opacity" : None, "cmd" : None, "group" : self.inGroup, "display" : self.displayIndex, "selected" : self.layerSelected, "nviz" : self.layerNviz}) if self.layerOpacity: self.layers[-1]["opacity"] = float(self.layerOpacity) if self.cmd: self.layers[-1]["cmd"] = self.cmd self.layerType = self.layerName = self.Checked = \ self.Opacity = self.cmd = None elif name == 'task': self.inTask = False elif name == 'parameter': self.inParameter = False self.cmd.append('%s=%s' % (self.parameterName, self.value)) self.parameterName = self.value = None elif name == 'value': self.inValue = False elif name == 'flag': self.inFlag = False elif name == 'layer_manager': self.inLayerManager = False # # Nviz section # elif name == 'nviz': self.inNviz = False elif name == 'attribute': self.inAttribute = False self.refAttribute['value'] = str(self.value) def characters(self, ch): self.my_characters(ch) def my_characters(self, ch): if self.inValue: self.value += ch class WriteWorkspaceFile(object): """Generic class for writing workspace file""" def __init__(self, lmgr, file): self.file = file self.lmgr = lmgr self.indent = 0 # write header self.file.write('\n') self.file.write('\n') self.file.write('%s\n' % (' ' * self.indent)) self.indent =+ 4 # layer manager windowPos = self.lmgr.GetPosition() windowSize = self.lmgr.GetSize() file.write('%s\n' % (' ' * self.indent, windowPos[0], windowPos[1], windowSize[0], windowSize[1] )) file.write('%s\n' % (' ' * self.indent)) # list of displays for page in range(0, self.lmgr.gm_cb.GetPageCount()): mapTree = self.lmgr.gm_cb.GetPage(page).maptree region = mapTree.Map.region displayPos = mapTree.mapdisplay.GetPosition() displaySize = mapTree.mapdisplay.GetSize() file.write('%s\n' % (' ' * self.indent, int(mapTree.mapdisplay.autoRender.IsChecked()), mapTree.mapdisplay.toggleStatus.GetSelection(), int(mapTree.mapdisplay.showRegion.IsChecked()), displayPos[0], displayPos[1], displaySize[0], displaySize[1], region['w'], region['s'], region['e'], region['n'] )) # list of layers item = mapTree.GetFirstChild(mapTree.root)[0] self.__writeLayer(mapTree, item) file.write('%s\n' % (' ' * self.indent)) self.indent =- 4 file.write('%s\n' % (' ' * self.indent)) def __writeLayer(self, mapTree, item): """Write bunch of layers to GRASS Workspace XML file""" self.indent += 4 while item and item.IsOk(): type = mapTree.GetPyData(item)[0]['type'] if type != 'group': maplayer = mapTree.GetPyData(item)[0]['maplayer'] else: maplayer = None checked = int(item.IsChecked()) cmd = mapTree.GetPyData(item)[0]['cmd'] if type == 'command': self.file.write('%s\n' % \ (' ' * self.indent, type, ' '.join(cmd), checked)); self.file.write('%s\n' % (' ' * self.indent)); elif type == 'group': name = mapTree.GetItemText(item) self.file.write('%s\n' % \ (' ' * self.indent, name, checked)); self.indent += 4 subItem = mapTree.GetFirstChild(item)[0] self.WriteLayer(subItem) self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent)); else: name = mapTree.GetItemText(item) opacity = maplayer.GetOpacity(float=True) self.file.write('%s\n' % \ (' ' * self.indent, type, name, checked, opacity)); self.indent += 4 # selected ? if item == mapTree.layer_selected: self.file.write('%s\n' % (' ' * self.indent)) # layer properties self.file.write('%s\n' % (' ' * self.indent, cmd[0])) self.indent += 4 for option in cmd[1:]: if option[0] == '-': # flag self.file.write('%s\n' % (' ' * self.indent, option[1])) else: # parameter key, value = option.split('=', 1) self.file.write('%s\n' % (' ' * self.indent, key)) self.indent += 4 self.file.write('%s%s\n' % (' ' * self.indent, value)) self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent)); self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent)); nviz = mapTree.GetPyData(item)[0]['nviz'] if nviz: self.file.write('%s\n' % (' ' * self.indent)); if maplayer.type == 'raster': self.__writeNvizSurface(nviz) elif maplayer.type == 'vector': self.__writeNvizVector(nviz) self.file.write('%s\n' % (' ' * self.indent)); self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent)); item = mapTree.GetNextSibling(item) self.indent -= 4 def __writeNvizSurface(self, data): """Save Nviz raster layer properties to workspace @param data Nviz layer properties """ self.indent += 4 for attrb in data.iterkeys(): if len(data[attrb]) < 1: # skip empty attributes continue for name in data[attrb].iterkeys(): # surface attribute if attrb == 'attribute': self.file.write('%s<%s name="%s" map="%d">\n' % \ (' ' * self.indent, attrb, name, data[attrb][name]['map'])) self.indent += 4 self.file.write('%s%s\n' % (' ' * self.indent, data[attrb][name]['value'])) self.indent -= 4 # draw mode if attrb == 'draw': self.file.write('%s<%s' %(' ' * self.indent, attrb)) resTag = None for name in data[attrb]: if name == 'resolution': self.indent += 4 resTag = '' for type, value in (('coarse', data[attrb][name][0]), ('fine', data[attrb][name][1])): resTag += '%s\n' % (' ' * self.indent, type) self.indent += 4 resTag += '%s%s\n' % (' ' * self.indent, value) self.indent -= 4 resTag += '%s\n' % (' ' * self.indent) self.indent -= 4 else: # note: second argument is 'all' -> skip self.file.write(' %s="%s"' % (name, data[attrb][name][0])) self.file.write('>\n') # if resTag: self.file.write(resTag) # position elif attrb == 'position': self.file.write('%s<%s>\n' %(' ' * self.indent, attrb)) i = 0 for tag in ('x', 'y', 'z'): self.indent += 4 self.file.write('%s<%s>%s<%s>\n' % (' ' * self.indent, tag, data[attrb][name][i], tag)) i += 1 self.indent -= 4 # end tag self.file.write('%s\n' % (' ' * self.indent, attrb)) self.indent -= 4 def __writeNvizVector(self, data): """Save Nviz vector layer properties to workspace @param data Nviz layer properties """ self.indent += 4 for attrb in data.iterkeys(): if len(data[attrb]) < 1: # skip empty attributes continue self.file.write('%s<%s>\n' % (' ' * self.indent, attrb)) self.indent += 4 for name in data[attrb].iterkeys(): self.file.write('%s<%s>' % (' ' * self.indent, name)) if type(data[attrb][name]) == type({}): self.file.write('\n') self.indent += 4 for subname in data[attrb][name].iterkeys(): if subname == 'flat': self.file.write('%s\n' % (' ' * self.indent, data[attrb][name][subname][0], data[attrb][name][subname][1])) else: self.file.write('%s<%s>%s\n' % (' ' * self.indent, subname, data[attrb][name][subname], subname)) self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent, name)) else: self.file.write('%s\n' % (data[attrb][name], name)) self.indent -= 4 self.file.write('%s\n' % (' ' * self.indent, attrb)) self.indent -= 4 class ProcessGrcFile(object): def __init__(self, filename): """Process GRC file""" self.filename = filename # elements self.inGroup = False self.inRaster = False self.inVector = False # list of layers self.layers = [] # error message self.error = '' self.num_error = 0 def read(self, parent): """Read GRC file @param parent parent window @return list of map layers """ try: file = open(self.filename, "r") except IOError: wx.MessageBox(parent=parent, message=_("Unable to open file <%s> for reading.") % self.filename, caption=_("Error"), style=wx.OK | wx.ICON_ERROR) return [] line_id = 1 for line in file.readlines(): self.process_line(line.rstrip('\n'), line_id) line_id +=1 file.close() if self.num_error > 0: wx.MessageBox(parent=parent, message=_("Some lines were skipped when reading settings " "from file <%s>.\nSee 'Command output' window for details.\n\n" "Number of skipped lines: %d" % \ (self.filename, self.num_error)), caption=_("Warning"), style=wx.OK | wx.ICON_EXCLAMATION) parent.goutput.WriteLog('Map layers loaded from GRC file <%s>' % self.filename) parent.goutput.WriteLog('Skipped lines:\n%s' % self.error) return self.layers def process_line(self, line, line_id): """Process line definition""" element = self._get_element(line) if element == 'Group': self.groupName = self._get_value(line) self.layers.append({ "type" : 'group', "name" : self.groupName, "checked" : None, "opacity" : None, "cmd" : None, "group" : self.inGroup, "display" : 0 }) self.inGroup = True elif element == '_check': if int(self._get_value(line)) == 1: self.layers[-1]['checked'] = True else: self.layers[-1]['checked'] = False elif element == 'End': if self.inRaster: self.inRaster = False elif self.inVector: self.inVector = False elif self.inGroup: self.inGroup = False elif element == 'opacity': self.layers[-1]['opacity'] = float(self._get_value(line)) # raster elif element == 'Raster': self.inRaster = True self.layers.append({ "type" : 'raster', "name" : self._get_value(line), "checked" : None, "opacity" : None, "cmd" : ['d.rast'], "group" : self.inGroup, "display" : 0}) elif element == 'map' and self.inRaster: self.layers[-1]['cmd'].append('map=%s' % self._get_value(line)) elif element == 'overlay' and self.inRaster: if int(self._get_value(line)) == 1: self.layers[-1]['cmd'].append('-o') elif element == 'rastquery' and self.inRaster: value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('catlist=%s' % value) elif element == 'bkcolor' and self.inRaster: value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('bg=%s' % value) # vector elif element == 'Vector': self.inVector = True self.layers.append({ "type" : 'vector', "name" : self._get_value(line), "checked" : None, "opacity" : None, "cmd" : ['d.vect'], "group" : self.inGroup, "display" : 0}) elif element == 'vect' and self.inVector: self.layers[-1]['cmd'].append('map=%s' % self._get_value(line)) elif element in ('display_shape', 'display_cat', 'display_topo', 'display_dir', 'display_attr', 'type_point', 'type_line', 'type_boundary', 'type_centroid', 'type_area', 'type_face') and self.inVector: if int(self._get_value(line)) == 1: name = element.split('_')[0] type = element.split('_')[1] paramId = self._get_cmd_param_index(self.layers[-1]['cmd'], name) if paramId == -1: self.layers[-1]['cmd'].append('%s=%s' % (name, type)) else: self.layers[-1]['cmd'][paramId] += ',%s' % type elif element in ('color', 'fcolor', 'lcolor') and self.inVector: value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('%s=%s' % (element, self._color_name_to_rgb(value))) elif element == 'rdmcolor' and self.inVector: if int(self._get_value(line)) == 1: self.layers[-1]['cmd'].append('-c') elif element == 'sqlcolor' and self.inVector: if int(self._get_value(line)) == 1: self.layers[-1]['cmd'].append('-a') elif element in ('icon', 'size', 'layer', 'xref', 'yref', 'lsize', 'where', 'minreg', 'maxreg') and self.inVector: value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('%s=%s' % (element, value)) elif element == 'lwidth': value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('width=%s' % value) elif element == 'lfield': value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('llayer=%s' % value) elif element == 'attribute': value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('attrcol=%s' % value) elif element == 'cat': value = self._get_value(line) if value != '': self.layers[-1]['cmd'].append('cats=%s' % value) else: self.error += _(' row %d:') % line_id + line + os.linesep self.num_error += 1 def _get_value(self, line): """Get value of element""" try: return line.strip(' ').split(' ')[1].strip(' ') except: return '' def _get_element(self, line): """Get element tag""" return line.strip(' ').split(' ')[0].strip(' ') def _get_cmd_param_index(self, cmd, name): """Get index of parameter in cmd list @param cmd cmd list @param name parameter name @return index @return -1 if not found """ i = 0 for param in cmd: if '=' not in param: i += 1 continue if param.split('=')[0] == name: return i i += 1 return -1 def _color_name_to_rgb(self, value): """Convert color name (#) to rgb values""" col = wx.NamedColour(value) return str(col.Red()) + ':' + \ str(col.Green()) + ':' + \ str(col.Blue())