Initial commit: What To Cook (WTC) v4.4 - Digitales Kochbuch, Wochenmenueplan & Buchdruck

2026-10-14 20:24:37 +02:00
commit c01d2d7639
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+import re
+from typing import List, Dict, Any, Optional
+
+COMMON_UNITS = [
+    "kg", "g", "mg", "l", "liter", "ml", "cl", "el", "tl", "esslöffel", "teelöffel",
+    "pck.", "pck", "päckchen", "pkt.", "pkt", "dose", "dosen", "glas", "gläser",
+    "prise", "prisen", "msp.", "msp", "messerspitze", "bund", "stk.", "stk",
+    "stück", "stücke", "zehe", "zehen", "zweig", "zweige", "blatt", "blätter",
+    "scheibe", "scheiben", "stange", "stangen", "kopf", "nest", "nester", "tropfen", "tr."
+]
+
+def parse_fraction(val_str: str) -> Optional[float]:
+    val_str = val_str.strip()
+    if "/" in val_str:
+        parts = val_str.split("/")
+        if len(parts) == 2:
+            try:
+                return float(parts[0]) / float(parts[1])
+            except ValueError:
+                pass
+    try:
+        return float(val_str.replace(",", "."))
+    except ValueError:
+        return None
+
+def parse_ingredient_line(line: str) -> Dict[str, Any]:
+    raw = line.strip()
+    if not raw:
+        return {"type": "empty", "raw": ""}
+    
+    if raw.endswith(":") or raw.lower().startswith("für ") or raw.lower() in [
+        "teig", "sauce", "soße", "füllung", "belag", "creme", "glasur", "marinade", "deko",
+        "schichten & deko", "keksschicht", "heidelbeersoße", "zitronen-zimt-sirup"
+    ]:
+        return {
+            "type": "header",
+            "text": raw.rstrip(":"),
+            "raw": raw
+        }
+    
+    match = re.match(r"^(\d+\s+\d+/\d+|\d+/\d+|\d+(?:[.,]\d+)?)(?:\s*-\s*(\d+(?:[.,]\d+)?))?\s*(.*)$", raw)
+    if match:
+        amt_str = match.group(1).strip()
+        range_end = match.group(2)
+        rest = match.group(3).strip()
+        
+        if " " in amt_str and "/" in amt_str:
+            whole, frac = amt_str.split()
+            val = float(whole) + (parse_fraction(frac) or 0.0)
+        elif "/" in amt_str:
+            val = parse_fraction(amt_str) or 0.0
+        else:
+            val = parse_fraction(amt_str) or 0.0
+            
+        display_amt = f"{amt_str}-{range_end}" if range_end else amt_str
+            
+        rest_parts = rest.split(None, 1)
+        if rest_parts:
+            first_word_clean = rest_parts[0].lower().rstrip(".,")
+            if first_word_clean in COMMON_UNITS or rest_parts[0].lower() in COMMON_UNITS:
+                unit = rest_parts[0]
+                ing_name = rest_parts[1] if len(rest_parts) > 1 else ""
+                return {
+                    "type": "ingredient",
+                    "amount_val": val,
+                    "amount_str": display_amt,
+                    "unit": unit,
+                    "name": ing_name,
+                    "raw": raw
+                }
+        
+        return {
+            "type": "ingredient",
+            "amount_val": val,
+            "amount_str": display_amt,
+            "unit": "",
+            "name": rest,
+            "raw": raw
+        }
+        
+    return {
+        "type": "ingredient",
+        "amount_val": None,
+        "amount_str": "",
+        "unit": "",
+        "name": raw,
+        "raw": raw
+    }
+
+def parse_ingredients_block(text: str) -> List[Dict[str, Any]]:
+    lines = [l.strip() for l in (text or "").split("\n") if l.strip()]
+    return [parse_ingredient_line(l) for l in lines]
+
+# Test cases
+tests = [
+    "150 g Mehl",
+    "1 EL Zucker",
+    "1/2 TL Muskat",
+    "1,5 TL Salz",
+    "2 frische Eier",
+    "2-3 Karotten",
+    "Für den Teig:",
+    "Salz und Pfeffer nach Belieben",
+    "300 ml Milch",
+    "1 Pck. Vanillezucker"
+]
+
+for t in tests:
+    res = parse_ingredient_line(t)
+    print(f"'{t}' => {res['type']}: amt={res.get('amount_val')}, unit='{res.get('unit')}', name='{res.get('name') or res.get('text')}'")