feat(meta): add legacy parser

src/logfile_parser/legacy.py

+#!/usr/bin/env jupyter
+from importlib_resources import files
+from logfile_parser import Parser
+
+grammars_dir = files("logfile_parser") / "grammars"
+
+
+def get_examples_dir():
+    return files("aliby").parent.parent / "examples" / "logfile_parser"
+
+
+def get_logfile_grammars_dir():
+    return files("logfile_parser") / "grammars"
+
+
+def get_legacy_log_example_interface() -> dict:
+    parsed = {}
+    examples_dir = get_examples_dir()
+    grammars_dir = get_logfile_grammars_dir()
+
+    for gram in ("acq", "log"):
+        for gram_file in grammars_dir.glob(f"multiDGUI_{gram}_format.json"):
+            parser = Parser(gram_file)
+            for file_to_parse in examples_dir.glob(f"*{gram}.txt"):
+                with open(file_to_parse, "r") as f:
+                    parsed = {**parsed, **parser.parse(f)}
+    return parsed
+
+
+def to_legacy(parsed_logfile: dict) -> dict:
+    """
+    Convert the output of the new logfile parsing to legacy to a minimal working set of metadata.
+    This converts the new more complex metadata structure to the previous one that did not have configuration profiles, but instead one configuration per channel.
+    This is a temporal solution as we transition into a more general metadata structure that accounts for heterogeneous groups.
+
+    We convert image configs to channels, and add general metadata to the root.
+    """
+    name_translation = {
+        "Microscope name": "microscope",
+    }
+    channel_name_translation = {
+        "Image config": "channel",
+        "Channel": "channel_hardware",
+        "Exposure (ms)": "exposure",
+        "Z spacing (um)": "zsect",
+    }
+
+    # Translate general data
+    general = {v: d["general"][k] for k, v in name_translation.items()}
+    # Translate and cast image configs
+    channels = {
+        v: list(map(_cast_type, parsed_logfile["image_config"][k]))
+        for k, v in channel_name_translation.items()
+    }
+    legacy_format = {"channels": channels, **general}
+    return legacy_format