I'm not sure how to solve this but I need to split a string into 2 parts. Take the string below for example:
North Street 57A 1floor
I need to split this into 2 parts.
Part 1 "North Street 57" and part 2 "A 1floor"
But if the address is just "North Street 57" then I don't need to split the string at all, so the key here is to identify if the first occurrence of street number is only digits or a combination of digits and characters (57A)
I have a lot of different address names so the text can vary. Can this be achieved?
If you always want to split after the first occurrence of a number, you may use Regular Expression for that.
Here's a full example:
string input = "North Street 57A 1floor";
var regex = new Regex(#"(?<=\d)(?=\D)");
var parts = regex.Split(input, 2);
foreach (var part in parts)
Console.WriteLine(part);
Output:
North Street 57
A 1floor
The pattern (?<=\d)(?=\D) gets the position after a string of digits. Then, we use Regex.Split(string input, int count) where count=2 to ensure that it returns two parts at maximum.
Try it online.
Related
I'm currently fighting (my first time) with regex.
My goal is to split multiple street names separated by "/". There are some special things to note. There could be a whitespace before and after the "/" and after the slash there needs to be a letter and not a number (because sometimes the house numbers are also separated by a slash.
I nearly archieved my goal. It currently splits as I wish when there are only two street names in a string, but with three street names I have problem (it only splits one time.)
My current two regex tries looks like this:
/.([A-Za-z]+).*? (Works great but only with two streets, ignoring additionals)
/.([A-Za-z]+).* (Works with multiple streets but stops after a whitespace in street names
To make it more clear I attached some screenshots:
In this screenshot I split like I want it to be (but only splits one time and ignoring the third street).
In this second screenshot I added a "?" at the end of the regex. Now it's considering the third street but cut's the second street after a whitespace.
Hope you can help me.
int z = 0;
string[] arr = new[]
{
"Street name 1 / Street name 2 / Street name 3",
"Street name 1 /Street name 2",
"Street name 1 / 2"
};
string pattern = #"(?i)\s*/\s*(?=[a-z])";
foreach (var x in arr)
{
WriteLine($"Record {++z}");
var streets = Regex.Split(x, pattern);
foreach (var street in streets)
{
WriteLine("\t" + street);
}
}
/*
Output:
Record 1
Street name 1
Street name 2
Street name 3
Record 2
Street name 1
Street name 2
Record 3
Street name 1 / 2
*/
I need to parse a German address that I get in one string like "Example Street 5b". I want to split it in groups: Street, Number and Additional Information.
For example: address = Test Str. 5b
-> Street: "Test Str." Number: "5", Add.: "b"
My code looks like that:
string street = "";
string number = "";
string addition = "";
//this works:
string address = "Test Str. 5b";
//this doesn't match, but I want it in the street group:
//string address = "Test Str.";
Match adressMatch = Regex.Match(address, #"(?<street>.*?\.*)\s*(?<number>[1-9][0-9]*)\s*(?<addition>.*)");
street = adressMatch.Groups["street"].Value;
number = adressMatch.Groups["number"].Value;
addition = adressMatch.Groups["addition"].Value;
That code works well for the example and most other cases.
My problem:
If the adress does not contain a number, the function fails. I tried to add *? after the number group and several other things, but then the whole string got parsed into the "addition" and "street" and "number" remain empty. But if the number is missing, I want the string to parse into "street" and "number" and "addition" shall remain empty.
Thanks in advance :)
I would do it like this: I'd match the street into the street group, then match the number - if any - into the number group, and then the rest into the addition group.
Then, if the number group does not succeed, the addition value should be moved to the number group, which can be done easily within C# code.
So, use
(?<street>.*\.)(?:\s*(?<number>[1-9][0-9]*))?\s*(?<addition>.*)
^^ ^^ ^^
See the regex demo here (note the changes: the first .*? is turned greedy, the * quantifier after \. is removed, the number group is made optional together with the \s* in front).
Then, use this logic (C# sample snippet):
string street = "";
string number = "";
string addition = "";
//string address = "Test Str. 5b"; // => Test Str. | 5 | b
string address = "Test Str. b"; // => Test Str. | b |
Match adressMatch = Regex.Match(address, #"(?<street>.*\.)(?:\s*(?<number>[1-9][0-9]*))?\s*(?<addition>.*)");
if (adressMatch.Success) {
street = adressMatch.Groups["street"].Value;
addition = adressMatch.Groups["addition"].Value;
if (adressMatch.Groups["number"].Success)
number = adressMatch.Groups["number"].Value;
else
{
number = adressMatch.Groups["addition"].Value;
addition = string.Empty;
}
}
Console.WriteLine("Street: {0}\nNumber: {1}\nAddition: {2}", street, number, addition);
Input 1
string str=" 1 KAUSHAL DUTTA 46 Female WL 19 WL 2";
Input 2
string str1= "1 AYAN PAL 38 Male CNF S5 49 (LB) CNF S5 49 (LB)";
i have two different types of string if user enter string str then the output should be (WL 2) & if user enter string str1 then the output should be(CNF S5 49 (LB))
all the values are dynamic except(WL (number)) (CNF (1 alphabet 1
or 2 number) number (LB))
If you frame your input string with some delimiter, then you can easily split the string and you can store it in some array and proceed.
For example, Frame your string as
string str="1#KAUSHAL DUTTA#46#Female#WL 19#WL 2";
After this split the string like
string[] str1 = str.Split('#');
From str1 array, you can take last value str1[5]
You can use Regex:
https://msdn.microsoft.com/en-us/library/az24scfc(v=vs.110).aspx
//This is the pattern for the first case WL followed by a one or more (+) digits (\d)
//followed by any number of characters (.*)
//the parenthesis is to us to be able to group what is inside, for further processing
string pattern1 = #"WL \d+ (.*)";
//Pattern for the second match: CNF followed by a letter (\w) followed by one or two ({1,2})
//digits (\d) followed by one or more (+) digits (\d), followed by (LB) "\(LB\)"
//the backslach is to get the litteral parenthesis
//followed by any number of characters (.*)
//the parenthesis is to us to be able to group what is inside, for further processing
string pattern2 = #"CNF \w\d{1,2} \d+ \(LB\) (.*)";
string result="";
if (Regex.IsMatch(inputString, pattern1))
{
//Groups[0] is the entire match, Groups[1] is the content of the first parenthesis
result = Regex.Match(inputString, pattern1).Groups[1].Value;
}
else if (Regex.IsMatch(inputString, pattern2))
{
//Groups[0] is the entire match, Groups[1] is the content of the first parenthesis
result = Regex.Match(inputString, pattern2).Groups[1].Value;
}
I have a Xamarin Forms application that uses Xamarin. Mobile on the platforms to get the current location and then ascertain the current address. The address is returned in string format with line breaks.
The address can look like this:
111 Mandurah Tce
Mandurah WA 6210
Australia
or
The Glades
222 Mandurah Tce
Mandurah WA 6210
Australia
I have this code to break it down into the street address (including number), suburb, state and postcode (not very elegant, but it works)
string[] lines = address.Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
List<string> addyList = new List<string>(lines);
int count = addyList.Count;
string lineToSplit = addyList.ElementAt(count - 2);
string[] splitLine = lineToSplit.Split(null);
List<string> splitList = new List<string>(splitLine);
string streetAddress = addyList.ElementAt (count - 3).ToString ();
string postCode = splitList.ElementAt(2);
string state = splitList.ElementAt(1);
string suburb = splitList.ElementAt(0);
I would like to extract the street number, and in the previous examples this would be easy, but what is the best way to do it, taking into account the number might be Lot 111 (only need to capture the 111, not the word LOT), or 123A or 8/123 - and sometimes something like 111-113 is also returned
I know that I can use regex and look for every possible combo, but is there an elegant built-in type solution, before I go writing any more messy code (and I know that the above code isn't particularly robust)?
These simple regular expressions will account for many types of address formats, but have you considered all the possible variations, such as:
PO Box 123 suburb state post_code
Unit, Apt, Flat, Villa, Shop X Y street name
7C/94 ALISON ROAD RANDWICK NSW 2031
and that is just to get the number. You will also have to deal with all the possible types of streets such as Lane, Road, Place, Av, Parkway.
Then there are street types such as:
12 Grand Ridge Road suburb_name
This could be interpreted as street = "Grand Ridge" and suburb = "Road suburb_name", as Ridge is also a valid street type.
I have done a lot of work in this area and found the huge number of valid address patterns meant simple regexs didn't solve the problem on large amounts of data.
I ended up develpping this parser http://search.cpan.org/~kimryan/Lingua-EN-AddressParse-1.20/lib/Lingua/EN/AddressParse.pm to solve the problem. It was originally written for Australian addresses so should work well for you.
Regex can capture the parts of a match into groups. Each parentheses () defines a group.
([^\d]*)(\d*)(.*)
For "Lot 222 Mandurah Tce" this returns the following groups
Group 0: "Lot 222 Mandurah Tce" (the input string)
Group 1: "Lot "
Group 2: "222"
Group 3: " Mandurah Tce"
Explanation:
[^\d]* Any number (including 0) of any character except digits.
\d* Any number (including 0) of digits.
.* Any number (including 0) of any character.
string input = "Lot 222 Mandurah Tce";
Match match = Regex.Match(input, #"([^\d]*)(\d*)(.*)");
string beforeNumber = match.Groups[1].Value; // --> "Lot "
string number = match.Groups[2].Value; // --> "222"
string afterNumber = match.Groups[3].Value; // --> " Mandurah Tce"
If a group finds no match, match.Groups[i] will return an empty string ("") for that group.
You could check if the content starts with a number for each entry in the splitLine.
string[] splitLine = lineToSplit.Split(addresseLine);
var streetNumber = string.empty;
foreach(var s in splitLine)
{
//Get the first digit value
if (Regex.IsMatch(s, #"^\d"))
{
streetNumber = s;
break;
}
}
//Deal with empty value another way
Console.WriteLine("My streetnumber is " + s)
Yea I think you have to identify what will work.
If:
it is always in the address line and it must always start with a Digit
nothing else in that line can start with a digit (or if something else does you know which always comes in what order, ie the code below will always work if the street number is always first)
you want every contiguous character to the digit that isn't whitespace (the - and \ examples suggest that to me)
Then it could be as simple as:
var regx = new Regex(#"(?:\s|^)\d[^\s]*");
var mtch = reg.Match(addressline);
You would sort of have to sift and see if any of those assumptions are broken.
Trying to find the last instance of numbers after last dash in a string so
test-123-2-456 would return 456
123-test would return ""
123-test-456 would return 456
123-test-456sdfsdf would return 456
123-test-asd456 would return 456
The expression, #"[^-]*$", does not match the numbers though, and I have tried using [\d] but to no avail.
Sure, the simplest solution would be something like this:
(\d+)[^-]*$
This will match one or more digits, captured in group 1, followed by zero or more of any character other than a hyphen, followed by the end of the string. In other words, it will match any sequence of digits as long as there are no hyphens between that sequence and the end of the string. You then just have to extract group 1 from the match. For example:
var inputs = new[] {
"test-123-2-456",
"123-test",
"123-test-456",
"123-test-456sdfsdf",
"123-test-asd456"
};
foreach(var str in inputs)
{
var m = Regex.Match(str, #"(\d+)[^-]*$");
Console.WriteLine("{0} --> {1}", str, m.Groups[1].Value);
}
Produces:
test-123-2-456 --> 456
123-test -->
123-test-456 --> 456
123-test-456sdfsdf --> 456
123-test-asd456 --> 456
Alternatively, if you could use a negative lookahead like this:
\d+(?!.*-)
This will match one or more digit characters so long as they are not followed by a hyphen. Only the digits will be included in the match.
Note that these two options behave differently if there are two or more sets of numbers after the last -, e.g. foo-123bar456. In this case it's not entirely clear what you want to happen, but the first pattern will simply match everything starting from the first sequence of digits to the end (123bar456) with group 1 only containing the first sequence of digits (123). If you'd like to change this so that it only captures the last sequence of digits, place a \d inside the character class (i.e. (\d+)[^\d-]*$). The second second pattern would produce a separate match for each sequence digits (in this example, 123 and 456) but the Regex.Match method will only give you the first match.
I suggest to apply two regex-functions. Take the result of the first one as the input for the second one.
The first regex is:
-[0-9]+[^-]+$ // Take the last peace of your string lead by a minus (-)
// followed by digits ([0-9]+)
// and some ugly rest that doesn't contain another minus ([^-]+$)
The second regex is:
-[0-9]+ // Seperate the relevant digits from the ugly rest
// You know that there can only be one minus + digits part in it
Tested here: http://derekslager.com/blog/posts/2007/09/a-better-dotnet-regular-expression-tester.ashx
The latest group from this RegEx can get the last number for you:
[^-A-z][0-9]+[^A-z]
If you are looking at groups, you can write this code by matching groups to get the latest number:
var inputs = new[] {
"test-123-2-456",
"123-test",
"123-test-456",
"123-test-456sdfsdf",
"123-test-asd456"
};
var m = Regex.Match(str, #"([0-9]*)");
if(m.Groups.Length>1) //This will avoid the values starting with numbers only.
Console.WriteLine("{0} --> {1}", str, m.Groups[m.Groups.Length-1].Value);