有3d gcode预览，基本能按要求切片，但是缩放后切片会失败
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163
app/conf_parse.py
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163
app/conf_parse.py
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import configparser
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import json
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import copy
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import math
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class ConfParse:
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def __init__(self, config_def_json_files_paths):
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self.config_def_json_files_paths = config_def_json_files_paths
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self.configs = {}
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for file in self.config_def_json_files_paths:
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with open(file, 'r') as f:
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jf = json.load(f)
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if "settings" in jf:
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setting_json = jf["settings"]
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for key, value in setting_json.items():
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# print(key, value)
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all_items = self._expend_children(value["children"])
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for item_key, item_value in all_items.items():
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self.configs[item_key] = item_value
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elif "overrides" in jf:
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override_json = jf["overrides"]
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for key, value in override_json.items():
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if key in self.configs:
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for item_key, item_value in value.items():
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self.configs[key][item_key] = item_value
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else:
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self.configs[key] = value
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def _expend_children(self, config):
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tmp_c = {}
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for key,val in config.items():
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if "children" in val:
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tmp_c.update(self._expend_children(val["children"]))
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val.pop("children", None)
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tmp_c[key] = val
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return tmp_c
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def add_inst_cfg(self, inst_cfg_files_paths):
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copy_settings = copy.deepcopy(self.configs)
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config = configparser.ConfigParser()
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for file in inst_cfg_files_paths:
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config.read(file)
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if config.has_section('values'):
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for key, val in config.items('values'):
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v = str(val)
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if key not in copy_settings:
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copy_settings[key] = {}
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if v.startswith("="):
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copy_settings[key]["value"] = v[1:]
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else:
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copy_settings[key]["value"] = v
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return copy_settings
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def parse_configs(self, settings):
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class ConfigStr(str):
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def __mul__(self, other): raise TypeError()
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def __rmul__(self, other): raise TypeError()
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def __add__(self, other): raise TypeError()
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def __radd__(self, other): raise TypeError()
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def __sub__(self, other): raise TypeError()
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def __rsub__(self, other): raise TypeError()
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def __truediv__(self, other): raise TypeError()
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def __rtruediv__(self, other): raise TypeError()
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def __pow__(self, other): raise TypeError()
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def __rpow__(self, other): raise TypeError()
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parsed_settings = copy.deepcopy(settings)
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last_unparsed = -1
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while True:
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unparsed = 0
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# 构建上下文环境变量上下文，用作eval的变量替换
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context = {}
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for k, v in parsed_settings.items():
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# 上下文里的变量取值：优先使用 value（如果有），否则使用 default_value
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if "value" in v:
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val = v["value"]
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elif "default_value" in v:
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val = v["default_value"]
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else:
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val = None
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if isinstance(val, str):
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if val.lower() == "true":
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val = True
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elif val.lower() == "false":
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val = False
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else:
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try:
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val = int(val)
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except ValueError:
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try:
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val = float(val)
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except ValueError:
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val = ConfigStr(val)
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context[k] = val
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# 自定义函数实现
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def resolveOrValue(key):
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return context.get(key)
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def extruderValues(key):
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# 兼容简易的多挤出机查询逻辑，目前单挤出机环境下返回一个单元素列表
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return [context.get(key)]
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def extruderValue(extruder_position, key):
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# 对于单挤出机环境或者全局配置，直接忽略 extruder_position，返回指定的 key 对应的值
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return context.get(key)
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def defaultExtruderPosition():
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return 0
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# 提供基础的运算函数支持
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builtin_funcs = {
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"max": max,
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"min": min,
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"abs": abs,
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"round": round,
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"int": int,
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"float": float,
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"bool": bool,
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"math": math,
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"resolveOrValue": resolveOrValue,
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"extruderValues": extruderValues,
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"extruderValue": extruderValue,
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"defaultExtruderPosition": defaultExtruderPosition
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}
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for key, val_dict in parsed_settings.items():
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for field, field_val in val_dict.items():
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# 仅对字符串进行尝试计算
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if "type" == field:
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continue
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if isinstance(field_val, str):
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try:
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# 如果是一个普通的纯字符串，比如分类名（如"Machine Type" ），eval可能会抛出SyntaxError或NameError
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# 如果它是一个python表达式，则会被顺利计算出结果
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evaluated = eval(field_val, {"__builtins__": builtin_funcs}, context)
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# 避免将原本只是用来作类型声明的 "int"/"float" 纯字符串，被错误求值为内置 Python type class 打断 JSON 序列化
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if evaluated != field_val and not isinstance(evaluated, type):
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if val_dict.get("type") == "str" and not isinstance(evaluated, str):
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if isinstance(evaluated, (list, dict)):
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import json
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val_dict[field] = json.dumps(evaluated).replace(" ", "")
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else:
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val_dict[field] = str(evaluated)
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else:
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val_dict[field] = evaluated
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except Exception:
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# 解析失败（例如是个普通英文字符串或者依赖还没被解开）则暂不做处理
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unparsed += 1
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# 如果在这一轮中未解析出的表达式数量不再减少，说明已经到达极限，跳出循环
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if unparsed == last_unparsed:
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break
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last_unparsed = unparsed
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return parsed_settings
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