173def format(config, name=None, writeSourceLine=True, prefix="", verbose=False):
174 """Format the history record for a configuration, or a specific
175 configuration field.
176
177 Parameters
178 ----------
179 config : `lsst.pex.config.Config`
180 A configuration instance.
181 name : `str`, optional
182 The name of a configuration field to specifically format the history
183 for. Otherwise the history of all configuration fields is printed.
184 writeSourceLine : `bool`, optional
185 If `True`, prefix each printout line with the code filename and line
186 number where the configuration event occurred. Default is `True`.
187 prefix : `str`, optional
188 A prefix for to add to each printout line. This prefix occurs first,
189 even before any source line. The default is an empty string.
190 verbose : `bool`, optional
191 Default is `False`.
192 """
193 if name is None:
194 for i, name in enumerate(config.history.keys()):
195 if i > 0:
196 print()
197 print(format(config, name))
198
199 outputs = []
200 for value, stack, label in config.history.get(name, []):
201 output = []
202 for frame in stack:
203 if frame.function in (
204 "__new__",
205 "__set__",
206 "__setattr__",
207 "execfile",
208 "wrapper",
209 ) or os.path.split(frame.filename)[1] in ("argparse.py", "argumentParser.py"):
210 if not verbose:
211 continue
212
213 line = []
214 if writeSourceLine:
215 line.append(
216 [
217 "%s" % ("%s:%d" % (frame.filename, frame.lineno)),
218 "FILE",
219 ]
220 )
221
222 line.append(
223 [
224 frame.content,
225 "TEXT",
226 ]
227 )
228 if False:
229 line.append(
230 [
231 frame.function,
232 "FUNCTION_NAME",
233 ]
234 )
235
236 output.append(line)
237
238 outputs.append([value, output])
239
240 if outputs:
241
242 if writeSourceLine:
243 sourceLengths = []
244 for value, output in outputs:
245 sourceLengths.append(
max([len(x[0][0])
for x
in output]))
246 sourceLength =
max(sourceLengths)
247
248 valueLength = len(prefix) +
max([len(str(value))
for value, output
in outputs])
249
250
251 msg = []
252 fullname = f"{config._name}.{name}" if config._name is not None else name
253 msg.append(_colorize(re.sub(r"^root\.", "", fullname), "NAME"))
254 for value, output in outputs:
255 line = prefix + _colorize("%-*s" % (valueLength, value), "VALUE") + " "
256 for i, vt in enumerate(output):
257 if writeSourceLine:
258 vt[0][0] = "%-*s" % (sourceLength, vt[0][0])
259
260 output[i] = " ".join([_colorize(v, t) for v, t in vt])
261
262 line += ("\n%*s" % (valueLength + 1, "")).join(output)
263 msg.append(line)
264
265 return "\n".join(msg)