hotfix: fix issue with parser when transaction description is split into multiple lines

Author: codereverser

casparser/process/cas_detailed.py

@@ -8,7 +8,7 @@
 from ..exceptions import HeaderParseError, CASParseError
 from .regex import DETAILED_DATE_RE, FOLIO_RE, SCHEME_RE, REGISTRAR_RE
 from .regex import CLOSE_UNITS_RE, NAV_RE, OPEN_UNITS_RE, VALUATION_RE
-from .regex import DIVIDEND_RE, TRANSACTION_RE1, TRANSACTION_RE2
+from .regex import DIVIDEND_RE, TRANSACTION_RE1, TRANSACTION_RE2, DESCRIPTION_TAIL_RE
 from ..types import FolioType, SchemeType
 from .utils import isin_search
 
@@ -165,9 +165,15 @@ def process_detailed_text(text):
                 nav=Decimal(m.group(2).replace(",", "_")),
             )
             continue
+        description_tail = ""
+        if m := re.search(DESCRIPTION_TAIL_RE, line):
+            description_tail = m.group(1).strip()
+            line = line.replace(m.group(1), "")
         if m := parse_transaction(line):
             date = date_parser.parse(m.group(1)).date()
             desc = m.group(2).strip()
+            if description_tail != "":
+                desc = " ".join([desc, description_tail])
             amt = Decimal(m.group(3).replace(",", "_").replace("(", "-"))
             if m.group(4) is None:
                 units = None

casparser/process/regex.py

@@ -26,4 +26,5 @@
 
 TRANSACTION_RE1 = rf"{date_re}\t\t([^0-9].*)\t\t{amt_re}\t\t{amt_re}\t\t{amt_re}\t\t{amt_re}"
 TRANSACTION_RE2 = rf"{date_re}\t\t([^0-9].*)\t\t{amt_re}(?:\t\t{amt_re}\t\t{amt_re}\t\t{amt_re})*"
+DESCRIPTION_TAIL_RE = r"(\n.+?)(\t\t|$)"
 DIVIDEND_RE = r"(?:dividend|idcw).+?(reinvest)*.*?@\s+Rs\.\s*([\d\.]+)\s+per\s+unit"