How to handle the quotes('') in the procedure?

Hi all,
I have been struggling with an issue in the procedure. Let us go to the functionality of the preocedure.
I am passing a parameter that has text like
' INDIA,BANGALORE,"INOX,BLR","THILAK NAGAR,JAYA NAGAR "4TH 'T' BLOCK,BANGALORE",560030'
Here, INDIA = country field
BANGALORE = city field
INOX,BLR = Theatre field
THILAK NAGAR,JAYA NAGAR "4TH 'T' BLOCK,BANGALORE = address field
560030 = pin field
I want to load these fields into the table thru procedure. Here the issue is if any field value come with quotes(") inside the quotes like above address field. Since , please guide me how to handle that quotes while identifying the field value for either or address field or some other one.
Table structure:
country varchar2(100 char)
city varchar2(100 char)
theatre varchar2(100 char)
address varchar2(2000 char)
pin NUMBER
Procedure Code:
create or replace
PROCEDURE prc_rollout_upload( p_text VARCHAR2 )
AS
v_quote_ind NUMBER := 0;
v_first_pos NUMBER := 0;
v_end_pos NUMBER := 0;
v_text_data varchar2(32767 CHAR) := p_text;
v_text_data1 varchar2(32767 CHAR);
v_text_arr_ind NUMBER := 0;
v_quote_pos NUMBER := 0;
v_comma_pos NUMBER := 0;
type text_rec IS RECORD(country VARCHAR2(20 CHAR),
CITY VARCHAR2(1000 CHAR),
exhibitor VARCHAR2(1000 CHAR),
address VARCHAR2(10000 CHAR),
PIN varchar2(6)
type v_text_tab is table of text_rec;
v_text_array v_text_tab := v_text_tab();
BEGIN
-- Fetch the values from the string to a PL/SQL table
v_text_data1 := v_text_data;
v_text_arr_ind := v_text_arr_ind + 1;
v_text_array.extend(v_text_arr_ind);
-- Country
IF (INSTR(v_text_data1, CHR(34)) > 0 )
THEN
v_quote_ind := INSTR(v_text_data1, CHR(34));
v_first_pos := INSTR(v_text_data1, CHR(34));
v_end_pos := INSTR(v_text_data1, CHR(34),1,2);
v_text_array(v_text_arr_ind).country := SUBSTR(v_text_data1,v_first_pos+1,v_end_pos-2);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).country);
v_text_data1 := SUBSTR(v_text_data1,v_end_pos+2);
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
END IF;
IF ( v_quote_ind = 0 ) THEN
v_text_array(v_text_arr_ind).country := SUBSTR(v_text_data1,1,INSTR(v_text_data1,CHR(44))-1);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).country);
v_text_data1 := SUBSTR(v_text_data1,INSTR(v_text_data1,CHR(44))+1);
-- DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_first_pos := 0;
v_end_pos := 0;
v_quote_ind := 0;
END IF;
-- City
v_quote_pos := INSTR(v_text_data1,CHR(34));
v_comma_pos := INSTR(v_text_data1,CHR(44));
IF ( v_quote_pos < v_comma_pos )
THEN
v_quote_ind := INSTR(v_text_data1, CHR(34));
v_first_pos := INSTR(v_text_data1, CHR(34));
v_end_pos := INSTR(v_text_data1, CHR(34),1,2);
v_text_array(v_text_arr_ind).city := SUBSTR(v_text_data1,v_first_pos+1,v_end_pos-2);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).city);
v_text_data1 := SUBSTR(v_text_data1,v_end_pos+2);
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
IF ( v_quote_pos > v_comma_pos ) THEN
v_text_array(v_text_arr_ind).city := SUBSTR(v_text_data1,1,INSTR(v_text_data1,CHR(44))-1);
-- DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).city);
v_text_data1 := SUBSTR(v_text_data1,INSTR(v_text_data1,CHR(44))+1);
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_first_pos := 0;
v_end_pos := 0;
v_quote_ind := 0;
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
-- Exhibitor
v_quote_pos := INSTR(v_text_data1,CHR(34));
v_comma_pos := INSTR(v_text_data1,CHR(44));
IF ( v_quote_pos < v_comma_pos )
THEN
v_first_pos := INSTR(v_text_data1, CHR(34));
v_end_pos := INSTR(v_text_data1, CHR(34),1,2);
v_text_array(v_text_arr_ind).exhibitor := SUBSTR(v_text_data1,v_first_pos+1,v_end_pos-2);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).exhibitor);
v_text_data1 := SUBSTR(v_text_data1,v_end_pos+2);
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
IF ( v_quote_pos > v_comma_pos ) THEN
v_text_array(v_text_arr_ind).exhibitor := SUBSTR(v_text_data1,1,INSTR(v_text_data1,CHR(44))-1);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).exhibitor);
v_text_data1 := SUBSTR(v_text_data1,INSTR(v_text_data1,CHR(44))+1);
-- DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_first_pos := 0;
v_end_pos := 0;
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
--Address
v_quote_pos := INSTR(v_text_data1,CHR(34));
v_comma_pos := INSTR(v_text_data1,CHR(44));
IF ( v_quote_pos < v_comma_pos )
THEN
v_first_pos := INSTR(v_text_data1, CHR(34));
v_end_pos := INSTR(v_text_data1, CHR(34),1,2);
v_text_array(v_text_arr_ind).address := SUBSTR(v_text_data1,v_first_pos+1,v_end_pos-2);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).address);
v_text_data1 := SUBSTR(v_text_data1,v_end_pos+2);
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
IF ( v_quote_pos > v_comma_pos ) THEN
v_text_array(v_text_arr_ind).address := SUBSTR(v_text_data1,1,INSTR(v_text_data1,CHR(44))-1);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).address);
v_text_data1 := SUBSTR(v_text_data1,INSTR(v_text_data1,CHR(44))+1);
-- DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_first_pos :=0;
v_end_pos := 0;
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
--PIN
v_quote_pos := INSTR(v_text_data1,CHR(34));
v_comma_pos := INSTR(v_text_data1,CHR(44));
IF ( v_quote_pos < v_comma_pos )
THEN
v_first_pos := INSTR(v_text_data1, CHR(34));
v_end_pos := INSTR(v_text_data1, CHR(34),1,2);
v_text_array(v_text_arr_ind).pin := SUBSTR(v_text_data1,v_first_pos+1,v_end_pos-2);
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).pin);
v_text_data1 := 0;
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
IF ( v_comma_pos IS NULL OR v_quote_pos > v_comma_pos ) THEN
v_text_array(v_text_arr_ind).pin := v_text_data1;
--DBMS_OUTPUT.PUT_LiNE(v_text_array(v_text_arr_ind).pin);
v_text_data1 := 0;
--DBMS_OUTPUT.PUT_LiNE(v_text_data1);
v_first_pos := 0;
v_end_pos := 0;
v_quote_pos := 0;
v_comma_pos := 0;
END IF;
EXCEPTION
WHEN others then
DBMS_OUTPUT.PUT_LiNE(SUBSTR(SQLERRM,1,200));
END prc_rollout_upload;
Oracle version :
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
Your help would be highly appreciated !!!
Regards,
Vissu.....

To start with Try this:
SQL> ed
Wrote file afiedt.buf
1    declare
2   v_var VARCHAR2(10000) := 'INDIA,BANGALORE,"INOX,BLR","THILAK NAGAR,JAYA NAGAR ';
3    v_delim VARCHAR2(1) := ',';
4    v_enclose VARCHAR2(1) := '"';
5    v_val VARCHAR2(1000) := NULL;
6    begin
7    v_var := v_var||'"4TH T BLOCK,BANGALORE",500365'||',';
8    FOR I IN 1..5 LOOP
9    v_val := CASE WHEN SUBSTR(v_Var,1,1) <> '"' THEN
10              SUBSTR(v_Var,1,INSTR(v_Var,',',1,1)-1)
11              ELSE
12              SUBSTR(v_Var,2,INSTR(v_Var,'",',1,1) - INSTR(v_Var,'"',1,1) - 1)
13              END;
14    v_Var := CASE WHEN SUBSTR(v_Var,1,1) <> '"' THEN
15              SUBSTR(v_Var,INSTR(v_Var,',',1,1) + 1)
16              ELSE
17              SUBSTR(v_Var,INSTR(v_Var,'",',1,1) + 2)
18              END;
19    dbms_output.put_line(v_Val);
20    END LOOP;
21* end;
SQL> /
INDIA
BANGALORE
INOX,BLR
THILAK NAGAR,JAYA NAGAR "4TH T BLOCK,BANGALORE
500365
PL/SQL procedure successfully completed.
SQL>

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