Provisions-Manager 95: Import, Händler-DB, Auszahlungsregeln, Excel-Export, Win95-Oberfläche, Wine-Build

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

provtool/money.py

@@ -0,0 +1,71 @@
+"""Geldbeträge werden intern immer als ganze Cent (int) geführt – keine Float-Rundungsfehler."""
+from __future__ import annotations
+
+from decimal import ROUND_HALF_UP, Decimal, InvalidOperation
+
+
+def parse_cent(value) -> int:
+    """Wandelt '1.234,56', '-8', '30', 12.5, '12.50 €' usw. in Cent um."""
+    if value is None:
+        return 0
+    if isinstance(value, bool):
+        raise ValueError("Ungültiger Betrag")
+    if isinstance(value, int):
+        return value * 100
+    if isinstance(value, float):
+        return int(Decimal(str(value)).scaleb(2).quantize(Decimal(1), ROUND_HALF_UP))
+    s = str(value).strip().replace("€", "").replace("EUR", "").replace(" ", "").replace("\xa0", "")
+    if not s:
+        return 0
+    neg = False
+    if s.endswith("-"):  # SAP-Stil: '30,00-'
+        neg, s = True, s[:-1]
+    if "," in s and "." in s:
+        if s.rfind(",") > s.rfind("."):
+            s = s.replace(".", "").replace(",", ".")   # 1.234,56
+        else:
+            s = s.replace(",", "")                     # 1,234.56
+    elif "," in s:
+        s = s.replace(",", ".")
+    try:
+        d = Decimal(s)
+    except InvalidOperation as exc:
+        raise ValueError(f"Ungültiger Betrag: {value!r}") from exc
+    cent = int(d.scaleb(2).quantize(Decimal(1), ROUND_HALF_UP))
+    return -cent if neg else cent
+
+
+def apply_percent(cent: int, prozent: float) -> int:
+    d = Decimal(cent) * Decimal(str(prozent)) / Decimal(100)
+    return int(d.quantize(Decimal(1), ROUND_HALF_UP))
+
+
+def fmt(cent: int | None, symbol: bool = True) -> str:
+    if cent is None:
+        return ""
+    neg = cent < 0
+    cent = abs(cent)
+    euro, rest = divmod(cent, 100)
+    s = f"{euro:,}".replace(",", ".") + f",{rest:02d}"
+    if neg:
+        s = "-" + s
+    return s + (" €" if symbol else "")
+
+
+def to_euro(cent: int) -> float:
+    return float(Decimal(cent) / Decimal(100))
+
+
+def fmt_percent(p: float | None) -> str:
+    if p is None:
+        return ""
+    s = f"{p:.2f}".rstrip("0").rstrip(".")
+    return s.replace(".", ",") + " %"
+
+
+def parse_percent(text: str) -> float:
+    s = str(text).strip().replace("%", "").replace(" ", "").replace(",", ".")
+    p = float(s)
+    if p < 0 or p > 1000:
+        raise ValueError("Prozentwert außerhalb des gültigen Bereichs")
+    return p