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tools/obsidian_preprocess.py

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+#!/usr/bin/env python3
+"""
+Vorverarbeitung von Obsidian-Markdown zu sauberem Pandoc-Markdown.
+
+Behandelt:
+  - Obsidian-Wikilinks:  [[Ziel]]  [[Ziel|Anzeige]]  [[bild.jpg|BreitePx]]
+  - Emoji -> drucktaugliche Glyphen bzw. Text (dekorative Emojis werden entfernt)
+  - ==Markierung==  ->  **fett** (drucktauglicher Ersatz)
+  - %% Kommentare %%  ->  entfernt
+  - Variation-Selektoren (U+FE0F/U+FE0E) entfernen
+
+Aufruf:
+  obsidian_preprocess.py <VAULT_ROOT> < eingabe.md > ausgabe.md
+"""
+import os
+import re
+import sys
+
+IMG_EXT = {".jpg", ".jpeg", ".png", ".webp", ".gif", ".bmp", ".svg", ".avif"}
+
+# Emoji -> Ersatz (leerer String = entfernen)
+EMOJI = {
+    "\U0001F449": "\u2192",   # 👉  ->
+    "\U0001F7E1": "\u25CF",   # 🟡  ●
+    "\u26A0": "\u26A0",       # ⚠  (wird über DejaVu-Fallback gesetzt)
+    "\u2600": "\u2600",       # ☀  (DejaVu-Fallback)
+    "\U0001F338": "",         # 🌸
+    "\U0001F342": "",         # 🍂
+    "\u2744": "",             # ❄
+    "\U0001F324": "",         # 🌤
+    "\U0001F5FA": "",         # 🗺
+    "\U0001F3D4": "",         # 🏔
+    "\U0001F5E3": "",         # 🗣
+    "\U0001F48E": "",         # 💎
+    "\U0001F3B2": "",         # 🎲
+    "\u26A1": "",             # ⚡
+    "\U0001F4C8": "",         # 📈
+    "\U0001F4C9": "",         # 📉
+    "\U0001F504": "",         # 🔄
+}
+VS = {"\uFE0F", "\uFE0E"}
+
+SKIP_DIRS = {".git", ".obsidian", ".trash", "node_modules"}
+
+
+def scan_images(root: str) -> dict:
+    """basename(lower) -> absoluter Pfad (nur Nicht-.trash-Pfade)."""
+    mapping = {}
+
+    def walk():
+        for dirpath, dirnames, filenames in os.walk(root):
+            dirnames[:] = [d for d in dirnames if d not in SKIP_DIRS]
+            for fn in filenames:
+                if os.path.splitext(fn)[1].lower() in IMG_EXT:
+                    # Absoluter Pfad, damit Pandoc das Bild unabhängig vom
+                    # aktuellen Arbeitsverzeichnis findet.
+                    full = os.path.abspath(os.path.join(dirpath, fn))
+                    key = fn.lower()
+                    mapping.setdefault(key, full)
+    walk()
+    return mapping
+
+
+def px_to_cm(px: float) -> float:
+    return round(px / 96.0 * 2.54, 2)
+
+
+def resolve_wikilink(image_map: dict, inner: str) -> str:
+    if "|" in inner:
+        target, disp = inner.split("|", 1)
+    else:
+        target, disp = inner, None
+    target = target.strip()
+    ext = os.path.splitext(target.lower())[1]
+    if ext in IMG_EXT:
+        path = image_map.get(target.lower(), target)
+        alt = os.path.basename(target)
+        if disp is not None and disp.strip().isdigit():
+            width = px_to_cm(int(disp.strip()))
+            return f"![{alt}]({path}){{width={width}cm}}"
+        return f"![{alt}]({path}){{width=100%}}"
+    # Notiz-Link -> Klartext
+    return (disp.strip() if disp is not None else target)
+
+
+def process(text: str, image_map: dict) -> str:
+    # 1. Kommentare
+    text = re.sub(r"%%.*?%%", "", text, flags=re.DOTALL)
+    # 2. Wikilinks
+    text = re.sub(r"\[\[([^\]]+)\]\]", lambda m: resolve_wikilink(image_map, m.group(1)), text)
+    # 3. Variation-Selektoren
+    for vs in VS:
+        text = text.replace(vs, "")
+    # 4. Emoji
+    for k, v in EMOJI.items():
+        text = text.replace(k, v)
+    # 5. ==mark== -> **fett**
+    text = re.sub(r"==([^=\n]+)==", r"**\1**", text)
+    # 6. Leerraum glätten (nach Emoji-Entfernung), aber Tabellen/Code unberührt
+    out = []
+    for line in text.split("\n"):
+        stripped = line.lstrip()
+        if not stripped.startswith("|") and not stripped.startswith("```"):
+            line = re.sub(r"[ \t]{2,}", " ", line)
+        out.append(line)
+    return "\n".join(out)
+
+
+def main():
+    root = sys.argv[1] if len(sys.argv) > 1 else "."
+    image_map = scan_images(root)
+    sys.stdout.write(process(sys.stdin.read(), image_map))
+
+
+if __name__ == "__main__":
+    main()