feat: 实现批量 Excel 生成（文本、图片、表格区域）

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

python/generator.py

@@ -1 +1,63 @@
-# placeholder
+import re
+import os
+import shutil
+from openpyxl import load_workbook
+from openpyxl.drawing.image import Image as XLImage
+
+PLACEHOLDER_RE = re.compile(r"\{\{(.+?)\}\}")
+
+def _apply_filename(pattern: str, row: dict) -> str:
+    def replace(m):
+        return str(row.get(m.group(1), m.group(0)))
+    return PLACEHOLDER_RE.sub(replace, pattern)
+
+def generate(req: dict) -> dict:
+    template_path = req["template_path"]
+    fields = req["fields"]
+    rows = req.get("rows")
+    data_file_path = req.get("data_file_path")
+    output_dir = req["output_dir"]
+    filename_pattern = req["filename_pattern"]
+
+    if data_file_path and not rows:
+        dwb = load_workbook(data_file_path, data_only=True)
+        dws = dwb.active
+        headers = [cell.value for cell in next(dws.iter_rows(min_row=1, max_row=1))]
+        rows = []
+        for row in dws.iter_rows(min_row=2, values_only=True):
+            rows.append({headers[i]: v for i, v in enumerate(row) if i < len(headers)})
+
+    os.makedirs(output_dir, exist_ok=True)
+    results = []
+
+    for i, row in enumerate(rows):
+        filename = _apply_filename(filename_pattern, row)
+        output_path = os.path.join(output_dir, filename)
+        shutil.copy2(template_path, output_path)
+
+        try:
+            wb = load_workbook(output_path)
+            for field in fields:
+                value = row.get(field["name"])
+                if value is None:
+                    continue
+                ws = wb[field["sheet"]]
+                if field["type"] == "text":
+                    ws[field["cell"]] = value
+                elif field["type"] == "image":
+                    if os.path.exists(str(value)):
+                        img = XLImage(str(value))
+                        ws.add_image(img, field["cell"])
+                elif field["type"] == "table_range":
+                    start_cell = ws[field["cell"]]
+                    start_row = start_cell.row
+                    start_col = start_cell.column
+                    for r_idx, data_row in enumerate(value):
+                        for c_idx, cell_value in enumerate(data_row):
+                            ws.cell(row=start_row + r_idx, column=start_col + c_idx, value=cell_value)
+            wb.save(output_path)
+            results.append({"row": i, "status": "success", "file": output_path})
+        except Exception as e:
+            results.append({"row": i, "status": "error", "error": str(e), "file": output_path})
+
+    return {"results": results}