Prepare ERP source for Gitea deployment

2026-06-20 15:01:44 +05:30
commit 5c75eb6bd9
450 changed files with 67698 additions and 0 deletions
@@ -0,0 +1,28 @@
+
+import csv
+import io
+import re
+
+PAN_RE = re.compile(r"^[A-Z]{5}[0-9]{4}[A-Z]$")
+GSTIN_RE = re.compile(r"^[0-9]{2}[A-Z]{5}[0-9]{4}[A-Z][1-9A-Z]Z[0-9A-Z]$")
+TAN_RE = re.compile(r"^[A-Z]{4}[0-9]{5}[A-Z]$")
+MOBILE_RE = re.compile(r"^[6-9][0-9]{9}$")
+PIN_RE = re.compile(r"^[0-9]{6}$")
+
+def normalize_text(value):
+    if value is None:
+        return None
+    text = str(value).strip()
+    return text or None
+
+def normalize_upper(value):
+    value = normalize_text(value)
+    return value.upper() if value else None
+
+def build_csv(rows, headers):
+    output = io.StringIO()
+    writer = csv.writer(output)
+    writer.writerow(headers)
+    for row in rows:
+        writer.writerow(row)
+    return output.getvalue()