gcode_macro: Parse variable_X parameters using ast.literal_eval()
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
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@ -1454,11 +1454,11 @@
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# the command invoking the macro.
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#variable_<name>:
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# One may specify any number of options with a "variable_" prefix.
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# The given variable name will then be available during macro
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# expansion. For example, a config with "variable_my_name = zebra"
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# might have a gcode config containing "M117 My name is {my_name}".
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# Variables can be changed at run-time using the SET_GCODE_VARIABLE
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# command.
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# The given variable name will be assigned the given value (parsed
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# as a Python literal) and will be available during macro expansion.
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# For example, a config with "variable_fan_speed = 75" might have
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# gcode commands containing "M106 S{ fan_speed * 255 }". Variables
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# can be changed at run-time using the SET_GCODE_VARIABLE command.
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# Enable the "M118" and "RESPOND" extended commands.
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@ -6,6 +6,11 @@ All dates in this document are approximate.
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# Changes
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20190607: The "variable_X" parameters of gcode_macro (along with the
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VALUE parameter of SET_GCODE_VARIABLE) are now parsed as Python
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literals. If a value needs to be assigned a string then wrap the value
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in quotes so that it is evaluated as a string.
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20190606: The "samples", "samples_result", and "sample_retract_dist"
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config options have been moved to the "probe" config section. These
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options are no longer supported in the "delta_calibrate", "bed_tilt",
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@ -182,7 +182,8 @@ The following command is available when a "gcode_macro" config section
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is enabled:
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- `SET_GCODE_VARIABLE MACRO=<macro_name> VARIABLE=<name>
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VALUE=<value>`: This command allows one to change the value of a
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gcode_macro variable at run-time.
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gcode_macro variable at run-time. The provided VALUE is parsed as a
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Python literal.
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## Custom Pin Commands
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@ -3,7 +3,7 @@
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# Copyright (C) 2018-2019 Kevin O'Connor <kevin@koconnor.net>
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#
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# This file may be distributed under the terms of the GNU GPLv3 license.
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import traceback, logging
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import traceback, logging, ast
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import jinja2
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@ -100,9 +100,16 @@ class GCodeMacro:
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prefix = 'default_parameter_'
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self.kwparams = { o[len(prefix):].upper(): config.get(o)
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for o in config.get_prefix_options(prefix) }
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self.variables = {}
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prefix = 'variable_'
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self.variables = { o[len(prefix):]: config.get(o)
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for o in config.get_prefix_options(prefix) }
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for option in config.get_prefix_options(prefix):
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try:
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self.variables[option[len(prefix):]] = ast.literal_eval(
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config.get(option))
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except ValueError as e:
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raise config.error(
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"Option '%s' in section '%s' is not a valid literal" % (
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option, config.get_name()))
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def get_status(self, eventtime):
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return dict(self.variables)
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cmd_SET_GCODE_VARIABLE_help = "Set the value of a G-Code macro variable"
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@ -115,7 +122,12 @@ class GCodeMacro:
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return
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raise self.gcode.error("Unknown gcode_macro variable '%s'" % (
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variable,))
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self.variables[variable] = value
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try:
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literal = ast.literal_eval(value)
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except ValueError as e:
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raise self.gcode.error("Unable to parse '%s' as a literal" % (
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value,))
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self.variables[variable] = literal
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cmd_desc = "G-Code macro"
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def cmd(self, params):
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if self.in_script:
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@ -80,13 +80,13 @@ gcode:
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{% endif %}
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[gcode_macro TEST_variable]
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variable_t: 12
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variable_t: 12.0
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gcode:
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{ printer.gcode.action_respond_info("TEST_variable") }
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{% if t|float - 12.0 != printer.toolhead.position.y %}
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{% if t - 12.0 != printer.toolhead.position.y %}
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M112
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{% endif %}
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{% if printer["gcode_macro TEST_variable"].t|float - 12.0 != 0.0 %}
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{% if printer["gcode_macro TEST_variable"].t - 12.0 != 0.0 %}
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M112
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{% endif %}
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SET_GCODE_VARIABLE MACRO=TEST_variable VARIABLE=t VALUE=17
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@ -95,7 +95,7 @@ gcode:
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[gcode_macro TEST_variable_part2]
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gcode:
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{ printer.gcode.action_respond_info("TEST_variable_part2") }
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{% if printer["gcode_macro TEST_variable"].t|float != 17.0 %}
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{% if printer["gcode_macro TEST_variable"].t != 17.0 %}
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M112
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{% endif %}
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