first implementation of read_metadata_from_logfile

mpsd-software-environment.py

@@ -11,6 +11,7 @@ import sys
 import time
 from pathlib import Path
 from typing import List, Tuple, Union
+import re
 
 # If 'rich' is available ("pip install rich" or "apt-get install python3-rich"),
 # then use coloured output, otherwise proceed as before
@@ -62,12 +63,13 @@ def log_metadata(key: str, value: str) -> None:
         f"{config_vars['metadata_tag_open']}{key}:{value}{config_vars['metadata_tag_close']}"
     )
 
+
 def read_metadata_from_logfile(logfile: Union[str, Path]) -> dict:
     """Read metadata from the log file.
-    
+
     This function reads metadata from the log file. The metadata is
     enclosed in a tag, so that it can be easily found in the log file.
-    
+
     Parameters
     ----------
     logfile : str or Path
@@ -75,6 +77,18 @@ def read_metadata_from_logfile(logfile: Union[str, Path]) -> dict:
     returns : dict
         dictionary containing the metadata
     """
+    with open(logfile, "r") as f:
+        log_text = f.read()
+    # check for all data that matches the regex
+    # metadata_tag_open {key}:{value} metadata_tag_close
+    # and return a dictionary with all the matches
+    return {
+        match.group(1): match.group(2)
+        for match in re.finditer(
+            f"{config_vars['metadata_tag_open']}(\w+):(\w+){config_vars['metadata_tag_close']}",
+            log_text,
+        )
+    }
 
 
 def set_up_logging(loglevel="warning", filename=None):