Regular Expression for string formation

sampath meka

Hello All,

This is sampath, i have one query for string formation from the strings provided.I was thinking whether this can be achieved through regular expression. Kindly help me in this regard.

string str1 = "Declare Local variable "" of type "" and initialize with """ ;

string str2 = "Declare Local variable b_test of type bool and initialize with 10";

Need to extract the values <> to same word in str2.

When i pass two aruguments for a function and function should return the output has below mentioned:

bool b_test =10;

kindly help me in this regard...

Thanks

Sampath

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vulpes12y ago
Incidentally, although you asked for this to be done using regular expressions, you can do it more easily using String.Split:

using System;

class Test
{
static void Main()
{
string str1 = "Declare Local variable \"\" of type \"\" and initialize with \"\"" ;
string str2 = "Declare Local variable b_test of type bool and initialize with 10";
string decl = CreateDeclaration(str1, str2);
Console.WriteLine(decl);
Console.ReadKey();
}

static string CreateDeclaration(string str1, string str2)
{
string[] words1 = str1.Split(' ');
string[] words2 = str2.Split(' ');

string var = "", datatype = "", value = "";

for(int i = 0; i < words1.Length; i++)
{
if (words1[i] == "\"\"") var = words2[i];
else if (words1[i] == "\"\"") datatype = words2[i];
else if (words1[i] == "\"\"") value = words2[i];
}

return String.Format("{0} {1} = {2};", datatype, var, value);
}
}
Vulpes12y ago
Try this:

using System;
using System.Text.RegularExpressions;

class Test
{
static void Main()
{
string str1 = "Declare Local variable \"\" of type \"\" and initialize with \"\"" ;
string str2 = "Declare Local variable b_test of type bool and initialize with 10";
string decl = CreateDeclaration(str1, str2);
Console.WriteLine(decl);
Console.ReadKey();
}

static string CreateDeclaration(string str1, string str2)
{
string regExp1 = @"(""<)?\b\w+\b(>"")?";
MatchCollection mc1 = Regex.Matches(str1, regExp1);
string regExp2 = @"\b\w+\b";
MatchCollection mc2 = Regex.Matches(str2, regExp2);

string var = "", datatype = "", value = "";

for(int i = 0; i < mc1.Count; i++)
{
if (mc1[i].Value == "\"\"") var = mc2[i].Value;
else if (mc1[i].Value == "\"\"") datatype = mc2[i].Value;
else if (mc1[i].Value == "\"\"") value = mc2[i].Value;
}

return String.Format("{0} {1} = {2};", datatype, var, value);
}
}