IBM AS/400E manual Sample programs in Java, C, and RPG

private Hashtable parseArguments (String query_string)

{

Hashtable cgi_vars = new Hashtable();

// get the first token scan for the '&' char

StringTokenizer stringToken = new StringTokenizer(query_string,"&");

while (stringToken.hasMoreTokens())

{

index++;

// Split the first token into Variable and Value

StringTokenizer subToken = new StringTokenizer(stringToken.nextToken(),"=");

// Remove the '+' char from the Variable

String variable = plussesToSpaces(subToken.nextToken());

// Remove the '+' char from the Value

String value = plussesToSpaces(subToken.nextToken());

//Create the Keys to store the Variables and the Values in the Hash Table

//the keys will be variable1, value1, variable2, value2, and so forth String temp1= new String("variable"+index);

String temp2= new String("value"+index);

//Store the variables and the values in the Hash table

cgi_vars.put(temp1,translateEscapes(variable)); cgi_vars.put(temp2,translateEscapes(value));

}

return cgi_vars;

}

private String plussesToSpaces(String query_string)

{

//Substitute the '+' char to a blank char return query_string.replace('+', ' ');

}

private String translateEscapes(String query_string)

{

int percent_sign = query_string.indexOf('%'); int ascii_val;

String next_escape=null; String first_part=null; String second_part=null;

while (percent_sign != -1)

{

next_escape = query_string.substring(percent_sign + 1, percent_sign + 3);

ascii_val = (16 * hexValue(next_escape.charAt(0)) + hexValue(next_escape.charAt(1))); first_part = query_string.substring(0, percent_sign);

second_part = query_string.substring(percent_sign + 3, query_string.length()); query_string = first_part + (char)ascii_val + second_part;

percent_sign = query_string.indexOf('%', percent_sign + 1);

}

return query_string;

Chapter 6. Sample programs (in Java, C, and RPG) 91