added script for adding tag to bib entries

Signed-off-by: Konstantin Läufer <[email protected]>

bibs/bibtex-add-tag.py

@@ -0,0 +1,61 @@
+#!/usr/bin/env python
+
+# adds tag bibtex_show = 1 to each entry
+# https://chatgpt.com/share/67262f17-f954-8002-903e-fb7601bb48fe
+
+import glob
+import re
+
+# Folder containing your .bib files
+bib_folder = "*/*.bib"
+
+# Regular expression to find the start of each BibTeX entry
+entry_start_regex = re.compile(r"(@[a-zA-Z]+{[^,]+,)")
+tag_to_add = "bibtex_show=1"
+
+# Function to process a single entry and add the tag if missing
+def process_entry(entry):
+    # Check if the tag is already present
+    if tag_to_add in entry:
+        return entry
+
+    # Insert the tag before the last closing brace, checking for trailing comma
+    brace_count = 0
+    for i in range(len(entry) - 1, -1, -1):
+        if entry[i] == '}':
+            brace_count += 1
+        elif entry[i] == '{':
+            brace_count -= 1
+        # Find the position of the last top-level closing brace
+        if brace_count == 1:
+            # Look for a comma on or before the last line before the closing brace
+            preceding_text = entry[:i].rstrip()
+            if preceding_text.endswith(","):
+                return preceding_text + f" {tag_to_add}" + entry[i:]
+            else:
+                return preceding_text + f", {tag_to_add}" + entry[i:]
+
+    # Return the original entry if no match (should not happen with valid BibTeX)
+    return entry
+
+# Loop through each .bib file in the folder
+for file_path in glob.glob(bib_folder):
+    with open(file_path, "r") as file:
+        content = file.read()
+
+    # Split content based on entry start
+    entries = entry_start_regex.split(content)
+    modified_content = entries[0]  # First part (anything before the first entry)
+
+    # Process each entry
+    for i in range(1, len(entries), 2):
+        entry_start = entries[i]
+        entry_content = entries[i + 1]
+        entry = entry_start + entry_content
+        modified_content += process_entry(entry) + "\n\n"
+
+    # Write back the modified content to the file
+    with open(file_path, "w") as file:
+        file.write(modified_content)
+
+print("Tag 'bibtex_show=1' has been added to all entries without adding extra commas.")