def from_string(self, string):
"""
Reads the entire experiment from a string.
Arguments:
string -- The definition string.
"""
debug.msg(u"building experiment")
s = iter(string.split("\n"));
line = next(s, None)
while line != None:
get_next = True
try:
l = self.split(line)
except ValueError as e:
raise exceptions.script_error( \
u"Failed to parse script. Maybe it contains illegal characters or unclosed quotes?")
if len(l) > 0:
self.parse_variable(line)
# Parse definitions
if l[0] == u"define":
if len(l) != 3:
raise exceptions.script_error( \
u"Failed to parse definition '%s'" \
% line)
item_type = l[1]
item_name = self.sanitize(l[2])
line, def_str = self.read_definition(s)
get_next = False
self.parse_definition(item_type, item_name, def_str)
# Advance to next line
if get_next:
line = next(s, None)
def from_string(self, string):
"""
Reads an experiment from a string
"""
s = iter(string.split("\n"));
line = next(s, None)
while line != None:
get_next = True
try:
l = shlex.split(line)
except ValueError as e:
raise exceptions.script_error("Failed to parse line '%s'. Maybe it contains illegal characters or unclosed quotes?" % line)
if len(l) > 0:
self.parse_variable(line)
# Parse definitions
if l[0] == "define":
if len(l) != 3:
raise exceptions.script_error("Failed to parse definition '%s'" % line)
item_type = l[1]
item_name = self.sanitize(l[2])
line, def_str = self.read_definition(s)
get_next = False
self.parse_definition(item_type, item_name, def_str)
if get_next:
line = next(s, None)
def parse_definition(self, item_type, item_name, string):
"""
Initialize a single definition, using the string, and
add it to the dictionary of items
Arguments:
item_type -- the type of the item
item_name -- the name of the item
string -- the string containing the definition
"""
if plugins.is_plugin(item_type):
# Load a plug-in
if debug.enabled:
debug.msg(u"loading plugin '%s'" % item_type)
item = plugins.load_plugin(item_type, item_name, self, string, \
self.item_prefix())
else:
try:
item = plugins.load_plugin(item_type, item_name, self, \
string, self.item_prefix())
except:
raise exceptions.script_error(u"Failed load plugin '%s'" % \
item_type)
self.items[item_name] = item
else:
# Load the module from the regular items
debug.msg(u"loading core plugin '%s'" % item_type)
if debug.enabled:
exec("from %s import %s" % (self.module_container(), item_type))
try:
if not self.debug:
exec("from %s import %s" % (self.module_container(), \
item_type))
except:
raise exceptions.script_error( \
u"Failed to import item '%s' as '%s'. " \
% (item_type, item_name)
+ "Perhaps the experiment requires a plug-in that is not available on your system.", \
full=False)
cmd = '%(item_type)s.%(item_type)s("%(item_name)s", self, u"""%(string)s""")' \
% {"item_type" : item_type, "item_name" : item_name, "string" \
: string.replace(u'"', u'\\"')}
if debug.enabled:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
else:
try:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
except Exception as e:
raise exceptions.script_error( \
u"Failed to instantiate module '%s' as '%s': %s" % \
(item_type, item_name, e))
def parse_definition(self, item_type, item_name, string):
"""
Initialize a single definition, using the string, and
add it to the dictionary of items
Arguments:
item_type -- the type of the item
item_name -- the name of the item
string -- the string containing the definition
"""
if plugins.is_plugin(item_type):
# Load a plug-in
if debug.enabled:
debug.msg(u"loading plugin '%s'" % item_type)
item = plugins.load_plugin(item_type, item_name, self, string, \
self.item_prefix())
else:
try:
item = plugins.load_plugin(item_type, item_name, self, \
string, self.item_prefix())
except:
raise exceptions.script_error(u"Failed load plugin '%s'" % \
item_type)
self.items[item_name] = item
else:
# Load the module from the regular items
debug.msg(u"loading core plugin '%s'" % item_type)
if debug.enabled:
exec("from %s import %s" % (self.module_container(), item_type))
try:
if not self.debug:
exec("from %s import %s" % (self.module_container(), \
item_type))
except:
raise exceptions.script_error( \
u"Failed to import item '%s' as '%s'. " \
% (item_type, item_name)
+ "Perhaps the experiment requires a plug-in that is not available on your system.", \
full=False)
cmd = '%(item_type)s.%(item_type)s("%(item_name)s", self, u"""%(string)s""")' \
% {"item_type" : item_type, "item_name" : item_name, "string" \
: string.replace(u'"', u'\\"')}
if debug.enabled:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
else:
try:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
except Exception as e:
raise exceptions.script_error( \
u"Failed to instantiate module '%s' as '%s': %s" % \
(item_type, item_name, e))
def parse_variable(self, line):
"""
Reads a single variable from a single definition line
Arguments:
line -- a single definition line
Returns:
True on succes, False on failure
"""
# It is a little ugly to call parse_comment() here, but otherwise
# all from_string() derivatives need to be modified
if self.parse_comment(line):
return True
l = self.split(line.strip())
try:
l = self.split(line.strip())
except Exception as e:
raise exceptions.script_error( \
u"Error parsing '%s' in item '%s': %s" % (line, self.name, e))
if len(l) > 0 and l[0] == u'set':
if len(l) != 3:
raise exceptions.script_error( \
u"Error parsing variable definition: '%s'" % line)
else:
self.set(l[1], l[2])
return True
return False
def parse_variable(self, line): """ Reads a single variable from a single definition line Arguments: line -- a single definition line Returns: True on succes, False on failure """ # It is a little ugly to call parse_comment() here, but otherwise # all from_string() derivatives need to be modified if self.parse_comment(line): return True l = self.split(line.strip()) try: l = self.split(line.strip()) except Exception as e: raise exceptions.script_error( \ u"Error parsing '%s' in item '%s': %s" % (line, self.name, e)) if len(l) > 0 and l[0] == u'set': if len(l) != 3: raise exceptions.script_error( \ u"Error parsing variable definition: '%s'" % line) else: self.set(l[1], l[2]) return True return False
def from_string(self, string):
"""
Reads the entire experiment from a string.
Arguments:
string -- The definition string.
"""
debug.msg(u"building experiment")
s = iter(string.split("\n"))
line = next(s, None)
while line != None:
get_next = True
try:
l = self.split(line)
except ValueError as e:
raise exceptions.script_error( \
u"Failed to parse script. Maybe it contains illegal characters or unclosed quotes?")
if len(l) > 0:
self.parse_variable(line)
# Parse definitions
if l[0] == u"define":
if len(l) != 3:
raise exceptions.script_error( \
u"Failed to parse definition '%s'" \
% line)
item_type = l[1]
item_name = self.sanitize(l[2])
line, def_str = self.read_definition(s)
get_next = False
self.parse_definition(item_type, item_name, def_str)
# Advance to next line
if get_next:
line = next(s, None)
def parse_definition(self, item_type, item_name, string): """ Initializes a single definition, using the string, and adds it to the dictionary of items. Arguments: item_type -- The item's type. item_name -- The item's name. string -- The item's definition string. """ if plugins.is_plugin(item_type): # Load a plug-in if debug.enabled: debug.msg(u"loading plugin '%s'" % item_type) item = plugins.load_plugin(item_type, item_name, self, string, \ self.item_prefix()) else: try: item = plugins.load_plugin(item_type, item_name, self, \ string, self.item_prefix()) except: raise exceptions.script_error(u"Failed load plugin '%s'" % \ item_type) self.items[item_name] = item else: # Load one of the core items debug.msg(u"loading core item '%s' from '%s'" % (item_type, \ self.module_container())) item_module = __import__(u'%s.%s' % (self.module_container(), \ item_type), fromlist=[u'dummy']) item_class = getattr(item_module, item_type) item = item_class(item_name, self, string) self.items[item_name] = item
def parse_rect_ellipse(self, line, l, item, item_type):
"""
Parse a rectangle
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
item_type -- type of the current item
Returns:
A finished sketchpad element
"""
if len(l) < 6:
raise exceptions.script_error(
"Invalid draw %s command '%s', expecting 'draw %s [x] [y] [w] [h]'" % (item_type, line, item_type)
)
item["type"] = item_type
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["w"] = self.auto_type(l[4])
item["h"] = self.auto_type(l[5])
return item
def parse_definition(self, item_type, item_name, string):
"""
Initializes a single definition, using the string, and adds it to the
dictionary of items.
Arguments:
item_type -- The item's type.
item_name -- The item's name.
string -- The item's definition string.
"""
if plugins.is_plugin(item_type):
# Load a plug-in
if debug.enabled:
debug.msg(u"loading plugin '%s'" % item_type)
item = plugins.load_plugin(item_type, item_name, self, string, \
self.item_prefix())
else:
try:
item = plugins.load_plugin(item_type, item_name, self, \
string, self.item_prefix())
except:
raise exceptions.script_error(u"Failed load plugin '%s'" % \
item_type)
self.items[item_name] = item
else:
# Load one of the core items
debug.msg(u"loading core item '%s' from '%s'" % (item_type, \
self.module_container()))
item_module = __import__(u'%s.%s' % (self.module_container(), \
item_type), fromlist=[u'dummy'])
item_class = getattr(item_module, item_type)
item = item_class(item_name, self, string)
self.items[item_name] = item
def parse_line_arrow(self, line, l, item, item_type):
"""
Parse a line or arrow
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
item_type -- type of the current item
Returns:
A finished sketchpad element
"""
if len(l) < 6:
raise exceptions.script_error("Invalid draw %s command '%s', expecting 'draw %s [x1] [y1] [x2] [y2]'" \
% (item_type, line, item_type))
item["type"] = item_type
item["x1"] = self.auto_type(l[2])
item["y1"] = self.auto_type(l[3])
item["x2"] = self.auto_type(l[4])
item["y2"] = self.auto_type(l[5])
return item
def parse_circle(self, line, l, item):
"""
Parse a circle
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 5:
raise exceptions.script_error(
"Invalid draw circle command '%s', expecting 'draw circle [x] [y] [r]'" % line
)
item["type"] = "circle"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["r"] = self.auto_type(l[4])
return item
def color_check(self, col):
"""<DOC>
Checks whether a string is a valid color name
Example:
>>> # Ok
>>> print self.color_check('red')
>>> # Ok
>>> print self.color_check('#FFFFFF')
>>> # Raises runtime_error
>>> print self.color_check('this is not a color')
Arguments:
col -- the color to check
Exceptions:
Raises a runtime_error if col is not a valid color
</DOC>"""
try:
if type(col) == unicode:
col = str(col)
pygame.Color(col)
except Exception as e:
raise exceptions.script_error( \
u"'%s' is not a valid color. See http://www.w3schools.com/html/html_colornames.asp for an overview of valid color names" \
% self.unistr(col))
def color_check(self, col):
"""<DOC>
Checks whether a string is a valid color name.
Arguments:
col -- The color to check.
Exceptions:
Raises a runtime_error if col is not a valid color.
Example:
>>> # Ok
>>> print self.color_check('red')
>>> # Ok
>>> print self.color_check('#FFFFFF')
>>> # Raises runtime_error
>>> print self.color_check('this is not a color')
</DOC>"""
try:
if type(col) == unicode:
col = str(col)
pygame.Color(col)
except Exception as e:
raise exceptions.script_error( \
u"'%s' is not a valid color. See http://www.w3schools.com/html/html_colornames.asp for an overview of valid color names" \
% self.unistr(col))
def parse_line(self, line):
"""
Allows for arbitrary line parsing, for item-specific requirements
Arguments:
line -- a single definition line
"""
l = self.split(line.strip())
if len(l) < 6 or l[0] != 'widget':
return
# Verify that the position variables are integers
try:
col = int(l[1])
row = int(l[2])
colspan = int(l[3])
rowspan = int(l[4])
except:
raise exceptions.script_error( \
_('Widget column and row should be numeric'))
# Parse the widget into a dictionary and store it in the list of
# widgets
w = self.parse_keywords(line)
w['type'] = l[5]
w['col'] = col
w['row'] = row
w['colspan'] = colspan
w['rowspan'] = rowspan
self._widgets.append(w)
def parse_line_arrow(self, line, l, item, item_type):
"""
Parse a line or arrow
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
item_type -- type of the current item
Returns:
A finished sketchpad element
"""
if len(l) < 6:
raise exceptions.script_error("Invalid draw %s command '%s', expecting 'draw %s [x1] [y1] [x2] [y2]'" \
% (item_type, line, item_type))
item["type"] = item_type
item["x1"] = self.auto_type(l[2])
item["y1"] = self.auto_type(l[3])
item["x2"] = self.auto_type(l[4])
item["y2"] = self.auto_type(l[5])
return item
def parse_image(self, line, l, item):
"""
Parse image
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 3:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw image [x] [y] [file]' or 'draw textline [file]'" \
% line)
item["type"] = u"image"
try:
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["file"] = l[4]
except:
item["x"] = self.get("width") / 2
item["y"] = self.get("height") / 2
item["file"] = l[2]
return item
def parse_line(self, line):
"""
Allows for arbitrary line parsing, for item-specific requirements
Arguments:
line -- a single definition line
"""
l = self.split(line.strip())
if len(l) < 6 or l[0] != 'widget':
return
# Verify that the position variables are integers
try:
col = int(l[1])
row = int(l[2])
colspan = int(l[3])
rowspan = int(l[4])
except:
raise exceptions.script_error( \
_('Widget column and row should be numeric'))
# Parse the widget into a dictionary and store it in the list of
# widgets
w = self.parse_keywords(line)
w['type'] = l[5]
w['col'] = col
w['row'] = row
w['colspan'] = colspan
w['rowspan'] = rowspan
self._widgets.append(w)
def parse_image(self, line, l, item):
"""
Parse image
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 3:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw image [x] [y] [file]' or 'draw textline [file]'" \
% line)
item["type"] = "image"
try:
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["file"] = l[4]
except:
item["x"] = self.get("width") / 2
item["y"] = self.get("height") / 2
item["file"] = l[2]
return item
def from_string(self, string):
"""
Read a sketchpad from string
Arguments:
string -- the unicode string containing the sketchpad definition
"""
for line in string.split(u'\n'):
if not self.parse_variable(line):
l = self.split(line)
if len(l) > 0:
if l[0] == u'draw':
if len(l) == 1:
raise exceptions.script_error( \
"Incomplete draw command '%s'" % line)
item = self.parse_item(l, line)
if l[1] in ("circle",):
item = self.parse_circle(line, l, item)
elif l[1] in ("rectangle", "rect"):
item = self.parse_rect_ellipse(line, l, item, \
"rect")
elif l[1] in ("fixdot", "fixation"):
item = self.parse_fixdot(line, l, item)
elif l[1] in ("ellipse", "oval"):
item = self.parse_rect_ellipse(line, l, item, \
"ellipse")
elif l[1] in ("arrow",):
item = self.parse_line_arrow(line, l, item, "arrow")
elif l[1] in ("line",):
item = self.parse_line_arrow(line, l, item, "line")
elif l[1] in ("textline",):
item = self.parse_textline(line, l, item)
elif l[1] in ("image", "bitmap"):
item = self.parse_image(line, l, item)
elif l[1] in ("gabor"):
item = self.parse_gabor(line, l, item)
elif l[1] in ("noise"):
item = self.parse_noise(line, l, item)
else:
raise exceptions.script_error( \
"Unknown draw command '%s'" % line)
self.items.append(item)
else:
raise exceptions.script_error("Unknown command '%s'" \
% line)
def from_string(self, string):
"""
Read a sketchpad from string
Arguments:
string -- the unicode string containing the sketchpad definition
"""
for line in string.split(u'\n'):
if not self.parse_variable(line):
l = self.split(line)
if len(l) > 0:
if l[0] == u'draw':
if len(l) == 1:
raise exceptions.script_error( \
"Incomplete draw command '%s'" % line)
item = self.parse_item(l, line)
if l[1] in ("circle", ):
item = self.parse_circle(line, l, item)
elif l[1] in ("rectangle", "rect"):
item = self.parse_rect_ellipse(line, l, item, \
"rect")
elif l[1] in ("fixdot", "fixation"):
item = self.parse_fixdot(line, l, item)
elif l[1] in ("ellipse", "oval"):
item = self.parse_rect_ellipse(line, l, item, \
"ellipse")
elif l[1] in ("arrow", ):
item = self.parse_line_arrow(
line, l, item, "arrow")
elif l[1] in ("line", ):
item = self.parse_line_arrow(line, l, item, "line")
elif l[1] in ("textline", ):
item = self.parse_textline(line, l, item)
elif l[1] in ("image", "bitmap"):
item = self.parse_image(line, l, item)
elif l[1] in ("gabor"):
item = self.parse_gabor(line, l, item)
elif l[1] in ("noise"):
item = self.parse_noise(line, l, item)
else:
raise exceptions.script_error( \
"Unknown draw command '%s'" % line)
self.items.append(item)
else:
raise exceptions.script_error("Unknown command '%s'" \
% line)
def from_string(self, string):
"""
Read a sketchpad from string
"""
for line in string.split("\n"):
if not self.parse_variable(line):
l = shlex.split(line)
if len(l) > 0:
if l[0] == "draw":
item = self.parse_item(l)
if l[1] in ("circle", ):
item = self.parse_circle(line, l, item)
elif l[1] in ("rectangle", "rect"):
item = self.parse_rect_ellipse(
line, l, item, "rect")
elif l[1] in ("fixdot", "fixation"):
item = self.parse_fixdot(line, l, item)
elif l[1] in ("ellipse", "oval"):
item = self.parse_rect_ellipse(
line, l, item, "ellipse")
elif l[1] in ("arrow", ):
item = self.parse_line_arrow(
line, l, item, "arrow")
elif l[1] in ("line", ):
item = self.parse_line_arrow(line, l, item, "line")
elif l[1] in ("textline", ):
item = self.parse_textline(line, l, item)
elif l[1] in ("image", "bitmap"):
item = self.parse_image(line, l, item)
elif l[1] in ("gabor"):
item = self.parse_gabor(line, l, item)
elif l[1] in ("noise"):
item = self.parse_noise(line, l, item)
else:
raise exceptions.script_error(
"Unknown draw command '%s'" % line)
self.items.append(item)
else:
raise exceptions.script_error("Unknown command '%s'" %
line)
def parse_definition(self, item_type, item_name, string):
"""
Initialize a single definition, using the string, and
add it to the dictionary of items
"""
if plugins.is_plugin(item_type):
if self.debug:
print "experiment.parse_definition(): loading plugin '%s'" % item_type
try:
item = plugins.load_plugin(item_type, item_name, self, string, self.item_prefix())
except:
raise exceptions.script_error("Failed load plugin '%s'" % item_type)
self.items[item_name] = item
else:
# Load the module from the regular items
if self.debug:
print "experiment.parse_definition(): loading core plugin '%s'" % item_type
if self.debug:
exec("from %s import %s" % (self.module_container(), item_type))
try:
if not self.debug:
exec("from %s import %s" % (self.module_container(), item_type))
except:
raise exceptions.script_error("Failed to import module '%s' as '%s'" % (item_type, item_name))
cmd = "%(item_type)s.%(item_type)s(\"%(item_name)s\", self, \"\"\"%(string)s\"\"\")" % \
{"item_type" : item_type, "item_name" : item_name, "string" : string.replace("\"", "\\\"")}
if self.debug:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
else:
try:
bytecode = compile(cmd, "<string>", "eval")
self.items[item_name] = eval(bytecode)
except Exception as e:
raise exceptions.script_error("Failed to instantiate module '%s' as '%s': %s" % (item_type, item_name, e))
def from_string(self, string):
"""
Read a sketchpad from string
"""
for line in string.split("\n"):
if not self.parse_variable(line):
l = shlex.split(line)
if len(l) > 0:
if l[0] == "draw":
item = self.parse_item(l)
if l[1] in ("circle",):
item = self.parse_circle(line, l, item)
elif l[1] in ("rectangle", "rect"):
item = self.parse_rect_ellipse(line, l, item, "rect")
elif l[1] in ("fixdot", "fixation"):
item = self.parse_fixdot(line, l, item)
elif l[1] in ("ellipse", "oval"):
item = self.parse_rect_ellipse(line, l, item, "ellipse")
elif l[1] in ("arrow",):
item = self.parse_line_arrow(line, l, item, "arrow")
elif l[1] in ("line",):
item = self.parse_line_arrow(line, l, item, "line")
elif l[1] in ("textline",):
item = self.parse_textline(line, l, item)
elif l[1] in ("image", "bitmap"):
item = self.parse_image(line, l, item)
elif l[1] in ("gabor"):
item = self.parse_gabor(line, l, item)
elif l[1] in ("noise"):
item = self.parse_noise(line, l, item)
else:
raise exceptions.script_error("Unknown draw command '%s'" % line)
self.items.append(item)
else:
raise exceptions.script_error("Unknown command '%s'" % line)
def parse_noise(self, line, l, item):
"""
Parse Gabor patch
"""
if len(l) < 4:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw noise [x] [y]'" % line)
item["type"] = "noise"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
return item
def parse_noise(self, line, l, item):
"""
Parse Gabor patch
"""
if len(l) < 4:
raise exceptions.script_error(
"Invalid draw image command '%s', expecting 'draw noise [x] [y]'"
% line)
item["type"] = "noise"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
return item
def parse_circle(self, line, l, item):
"""
Parse a circle
"""
if len(l) < 5:
raise exceptions.script_error("Invalid draw circle command '%s', expecting 'draw circle [x] [y] [r]'" % line)
item["type"] = "circle"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["r"] = self.auto_type(l[4])
return item
def color_check(self, s):
"""<DOC>
Checks whether a string is a valid color name
Arguments:
s -- the string to check
Returns:
True i the string is a color, False otherwise
</DOC>"""
try:
pygame.Color(s)
except:
raise exceptions.script_error("'%s' is not a valid color. See http://www.w3schools.com/html/html_colornames.asp for an overview of valid color names" % s)
def parse_circle(self, line, l, item):
"""
Parse a circle
"""
if len(l) < 5:
raise exceptions.script_error(
"Invalid draw circle command '%s', expecting 'draw circle [x] [y] [r]'"
% line)
item["type"] = "circle"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["r"] = self.auto_type(l[4])
return item
def color_check(self, s):
"""<DOC>
Checks whether a string is a valid color name
Arguments:
s -- the string to check
Returns:
True i the string is a color, False otherwise
</DOC>"""
try:
pygame.Color(s)
except:
raise exceptions.script_error( \
"'%s' is not a valid color. See http://www.w3schools.com/html/html_colornames.asp for an overview of valid color names" \
% s)
def parse_line_arrow(self, line, l, item, item_type):
"""
Parse a line or arrow
"""
if len(l) < 6:
raise exceptions.script_error("Invalid draw %s command '%s', expecting 'draw %s [x1] [y1] [x2] [y2]'" % (item_type, line, item_type))
item["type"] = item_type
item["x1"] = self.auto_type(l[2])
item["y1"] = self.auto_type(l[3])
item["x2"] = self.auto_type(l[4])
item["y2"] = self.auto_type(l[5])
return item
def parse_rect_ellipse(self, line, l, item, item_type):
"""
Parse a rectangle
"""
if len(l) < 6:
raise exceptions.script_error("Invalid draw %s command '%s', expecting 'draw %s [x] [y] [w] [h]'" % (item_type, line, item_type))
item["type"] = item_type
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["w"] = self.auto_type(l[4])
item["h"] = self.auto_type(l[5])
return item
def parse_line_arrow(self, line, l, item, item_type):
"""
Parse a line or arrow
"""
if len(l) < 6:
raise exceptions.script_error(
"Invalid draw %s command '%s', expecting 'draw %s [x1] [y1] [x2] [y2]'"
% (item_type, line, item_type))
item["type"] = item_type
item["x1"] = self.auto_type(l[2])
item["y1"] = self.auto_type(l[3])
item["x2"] = self.auto_type(l[4])
item["y2"] = self.auto_type(l[5])
return item
def parse_rect_ellipse(self, line, l, item, item_type):
"""
Parse a rectangle
"""
if len(l) < 6:
raise exceptions.script_error(
"Invalid draw %s command '%s', expecting 'draw %s [x] [y] [w] [h]'"
% (item_type, line, item_type))
item["type"] = item_type
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["w"] = self.auto_type(l[4])
item["h"] = self.auto_type(l[5])
return item
def parse_image(self, line, l, item):
"""
Parse image
"""
if len(l) < 3:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw image [x] [y] [file]' or 'draw textline [file]'" % line)
item["type"] = "image"
try:
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["file"] = l[4]
except:
item["x"] = self.get("width") / 2
item["y"] = self.get("height") / 2
item["file"] = l[2]
return item
def parse_noise(self, line, l, item):
"""
Parse noise patch
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 4:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw noise [x] [y]'" % line)
item["type"] = "noise"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
return item
def parse_noise(self, line, l, item):
"""
Parse noise patch
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 4:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw noise [x] [y]'" \
% line)
item["type"] = "noise"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
return item
def parse_gabor(self, line, l, item):
"""
Parse Gabor patch
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 4:
raise exceptions.script_error("Invalid draw image command '%s', expecting 'draw gabor [x] [y] [orient] [freq]'" \
% line)
item["type"] = u"gabor"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
return item
def parse_image(self, line, l, item):
"""
Parse image
"""
if len(l) < 3:
raise exceptions.script_error(
"Invalid draw image command '%s', expecting 'draw image [x] [y] [file]' or 'draw textline [file]'"
% line)
item["type"] = "image"
try:
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["file"] = l[4]
except:
item["x"] = self.get("width") / 2
item["y"] = self.get("height") / 2
item["file"] = l[2]
return item
def split(self, u):
"""
Splits a unicode string in the same way as shlex.split(). Unfortunately,
shlex doesn't handle unicode properly, so this wrapper function is
required.
Arguments:
u -- a unicode string
Returns:
A list of unicode strings, split as described here:
http://docs.python.org/library/shlex.html#shlex.split
"""
import shlex
try:
return [chunk.decode(self.encoding) for chunk in shlex.split( \
u.encode(self.encoding))]
except:
raise exceptions.script_error( \
u'Failed to parse line "%s". Is there a closing quotation missing?' \
% u)
def parse_rect_ellipse(self, line, l, item, item_type):
"""
Parse a rectangle
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
item_type -- type of the current item
Returns:
A finished sketchpad element
"""
if len(l) < 6:
raise exceptions.script_error("Invalid draw %s command '%s', expecting 'draw %s [x] [y] [w] [h]'" \
% (item_type, line, item_type))
item["type"] = item_type
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["w"] = self.auto_type(l[4])
item["h"] = self.auto_type(l[5])
return item
def parse_circle(self, line, l, item):
"""
Parse a circle
Arguments:
line -- a definition line
l -- a definition list
item -- sketchpad element to finish
Returns:
A finished sketchpad element
"""
if len(l) < 5:
raise exceptions.script_error("Invalid draw circle command '%s', expecting 'draw circle [x] [y] [r]'" \
% line)
item["type"] = "circle"
item["x"] = self.auto_type(l[2])
item["y"] = self.auto_type(l[3])
item["r"] = self.auto_type(l[4])
return item
def split(self, u): """ Splits a unicode string in the same way as shlex.split(). Unfortunately, shlex doesn't handle unicode properly, so this wrapper function is required. Arguments: u -- a unicode string Returns: A list of unicode strings, split as described here: http://docs.python.org/library/shlex.html#shlex.split """ import shlex try: return [chunk.decode(self.encoding) for chunk in shlex.split( \ u.encode(self.encoding))] except: raise exceptions.script_error( \ u'Failed to parse line "%s". Is there a closing quotation missing?' \ % u)