Adicionar app/services/io_excel.py

app/services/io_excel.py

@@ -0,0 +1,57 @@
+# All comments are in English.
+
+import openpyxl
+import xlrd
+from odf.opendocument import load
+from odf.table import Table, TableRow, TableCell
+from odf.text import P
+
+def normalize_newlines(value):
+    if value is None:
+        return ""
+    return (
+        str(value)
+        .replace("\r\n", "\\n")
+        .replace("\n\r", "\\n")
+        .replace("\r", "\\n")
+        .replace("\n", "\\n")
+    )
+
+def convert_xlsx(path):
+    wb = openpyxl.load_workbook(path, data_only=True)
+    ws = wb.active
+    rows = []
+    for row in ws.iter_rows(values_only=True):
+        cleaned = [normalize_newlines(cell) for cell in row]
+        rows.append("\x09".join(cleaned))
+    return "\n".join(rows)
+
+def convert_xls(path):
+    wb = xlrd.open_workbook(path)
+    sheet = wb.sheet_by_index(0)
+    rows = []
+    for r in range(sheet.nrows):
+        cleaned = [normalize_newlines(sheet.cell_value(r, c)) for c in range(sheet.ncols)]
+        rows.append("\x09".join(cleaned))
+    return "\n".join(rows)
+
+def convert_ods(path):
+    doc = load(path)
+    rows = []
+    for table in doc.getElementsByType(Table):
+        for row in table.getElementsByType(TableRow):
+            cells = []
+            for cell in row.getElementsByType(TableCell):
+                text = "".join(t.data for t in cell.getElementsByType(P))
+                cells.append(normalize_newlines(text))
+            rows.append("\x09".join(cells))
+    return "\n".join(rows)
+
+def convert_excel(path):
+    if path.endswith(".xlsx"):
+        return convert_xlsx(path)
+    if path.endswith(".xls"):
+        return convert_xls(path)
+    if path.endswith(".ods"):
+        return convert_ods(path)
+    raise ValueError("Unsupported Excel format")