"""Uniform row reader with indent level of the label column, for xlsx (openpyxl) and xls (xlrd)."""
import re
def _label_col(cells):
    return next((i for i, v in enumerate(cells) if isinstance(v, str) and v and not re.fullmatch(r'[\d.]+', v)), 0)
def read_rows(path, sheet_hint='piel', label_col=None, max_col=12):
    """Return list of dicts: row (1-based), cells, indent (of label cell), bold. Stops after 200 empty rows."""
    out, empty = [], 0
    if path.lower().endswith('.xlsx'):
        import openpyxl
        wb = openpyxl.load_workbook(path, read_only=False, data_only=True)
        ws = next(w for w in wb.worksheets if sheet_hint in w.title.lower().replace('.', ''))
        for row in ws.iter_rows(min_row=1, max_col=max_col):
            cells = [("" if c.value is None else (c.value.strip() if isinstance(c.value, str) else c.value)) for c in row]
            if not any(str(v) for v in cells):
                empty += 1
                if empty > 200: break
                continue
            empty = 0
            lc = label_col if label_col is not None else _label_col(cells)
            c = row[lc] if lc < len(row) else row[0]
            out.append({'row': row[0].row, 'cells': cells, 'indent': int(c.alignment.indent or 0), 'bold': bool(c.font and c.font.b)})
    else:
        import xlrd
        bk = xlrd.open_workbook(path, formatting_info=True)
        sh = next(bk.sheet_by_name(n) for n in bk.sheet_names() if sheet_hint in n.lower().replace('.', ''))
        for r in range(sh.nrows):
            cells = [(c.strip() if isinstance(c, str) else c) for c in sh.row_values(r)][:max_col]
            if not any(str(v) for v in cells): continue
            lc = label_col if label_col is not None else _label_col(cells)
            xf = bk.xf_list[sh.cell_xf_index(r, lc)] if lc < sh.ncols else None
            out.append({'row': r + 1, 'cells': cells, 'indent': xf.alignment.indent_level if xf else 0,
                        'bold': bool(xf and bk.font_list[xf.font_index].bold)})
    return out