I want to extract only those words within double quotes. So, if the content is:
Would "you" like to have responses to your "questions" sent to you via email?
The answer must be
you
questions
Try this regex:
\"[^\"]*\"
or
\".*?\"
explain :
[^ character_group ]
Negation: Matches any single character that is not in character_group.
*?
Matches the previous element zero or more times, but as few times as possible.
and a sample code:
foreach(Match match in Regex.Matches(inputString, "\"([^\"]*)\""))
Console.WriteLine(match.ToString());
//or in LINQ
var result = from Match match in Regex.Matches(line, "\"([^\"]*)\"")
select match.ToString();
Based on #Ria 's answer:
static void Main(string[] args)
{
string str = "Would \"you\" like to have responses to your \"questions\" sent to you via email?";
var reg = new Regex("\".*?\"");
var matches = reg.Matches(str);
foreach (var item in matches)
{
Console.WriteLine(item.ToString());
}
}
The output is:
"you"
"questions"
You can use string.TrimStart() and string.TrimEnd() to remove double quotes if you don't want it.
I like the regex solutions. You could also think of something like this
string str = "Would \"you\" like to have responses to your \"questions\" sent to you via email?";
var stringArray = str.Split('"');
Then take the odd elements from the array. If you use linq, you can do it like this:
var stringArray = str.Split('"').Where((item, index) => index % 2 != 0);
This also steals the Regex from #Ria, but allows you to get them into an array where you then remove the quotes:
strText = "Would \"you\" like to have responses to your \"questions\" sent to you via email?";
MatchCollection mc = Regex.Matches(strText, "\"([^\"]*)\"");
for (int z=0; z < mc.Count; z++)
{
Response.Write(mc[z].ToString().Replace("\"", ""));
}
I combine Regex and Trim:
const string searchString = "This is a \"search text\" and \"another text\" and not \"this text";
var collection = Regex.Matches(searchString, "\\\"(.*?)\\\"");
foreach (var item in collection)
{
Console.WriteLine(item.ToString().Trim('"'));
}
Result:
search text
another text
Try this (\"\w+\")+
I suggest you to download Expresso
http://www.ultrapico.com/Expresso.htm
I needed to do this in C# for parsing CSV and none of these worked for me so I came up with this:
\s*(?:(?:(['"])(?<value>(?:\\\1|[^\1])*?)\1)|(?<value>[^'",]+?))\s*(?:,|$)
This will parse out a field with or without quotes and will exclude the quotes from the value while keeping embedded quotes and commas. <value> contains the parsed field value. Without using named groups, either group 2 or 3 contains the value.
There are better and more efficient ways to do CSV parsing and this one will not be effective at identifying bad input. But if you can be sure of your input format and performance is not an issue, this might work for you.
Slight improvement on answer by #ria,
\"[^\" ][^\"]*\"
Will recognize a starting double quote only when not followed by a space to allow trailing inch specifiers.
Side effect: It will not recognize "" as a quoted value.
Related
I have a little problem that I don't know how to call it like, so I will do my best to explain you that.
String text = "Random text over here boyz, I dunno what to do";
I want to take by split only over here boyz for example, I want to let split the word text and the word , and it will show me the whole text that in thoose 2 strings. Any ideas?
Thank you,
Sagi.
From your comments I get that from this string:
foo bar id="baz" qux
You want to obtain the value baz, because it is in the id="{text}" pattern.
For that you can use a regular expression:
string result = Regex.Match(text, "id=\"(.*?)\"").Groups[1].Value;
Note that this will match any character. Also note that this will yield false positives, like fooid="bar", and that this won't match unquoted values.
So all in all, for parsing HTML, you should not use regular expressions. Try HtmlAgilityPack and an XPath expression.
There is a Split overload that can receive multiple string seperators:
var rrr = text.Split(new string[] { ",", "text" }, StringSplitOptions.None);
If you would like to extract only the text between these two strings using regex you can do something like this:
var pattern = #"text(.*),";
var a = new Regex(pattern).Match(text);
var result = a.Groups[1];
You can use Regex class:
https://msdn.microsoft.com/pl-pl/library/ze12yx1d%28v=vs.110%29.aspx
But first of all (as it was said) you need to clarify for yourself how you will identify string that you want.
in first case you can use
string stringResult;
if (text.Contains("over here boyz"))
stringResult = string.Empty;
else
stringResult = "over here boyz";
but the second case can solve by this code
String text = "Random text over here boyz, I dunno what to do";
//Second dream without whitespace
var result = Regex.Split(text, " *text *| *, *");
foreach (var x in result)
{
Console.WriteLine(x);
}
//Second dream with whitespace
result = Regex.Split(text, "text|,");
foreach (var x in result)
{
Console.WriteLine(x);
}
You can train to write Regex with this tool http://www.regexbuddy.com/ or http://www.regexr.com/
Truth is, I'm having a hard time writing a regex string to parse something in the form of
[[[tab name=dog content=cat|tab name=dog2 content=cat2]]]
This regex would be parsed so that I can dynamically build tabs as demonstrated here. Initially I tried a regex pattern like \[\[\[tab name=(?'name'.*?) content=(?'content'.*?)\]\]\]
But I realized I couldn't get the tab as a whole and build upon a query without doing a regex.replace. Is it possible to take the entire tab leading up to the pipe symbol as a group and then parse that group down from the sub key/value pairs?
This is the current regex string I'm working with \[\[\[(?'tab'tab name=(?'name'.*?) content=(?'content'.*?))\]\]\]
And here is my code for performing the regex. Any guidance would be appreciated.
public override string BeforeParse(string markupText)
{
if (CompiledRegex.IsMatch(markupText))
{
// Replaces the [[[code lang=sql|xxx]]]
// with the HTML tags (surrounded with {{{roadkillinternal}}.
// As the code is HTML encoded, it doesn't get butchered by the HTML cleaner.
MatchCollection matches = CompiledRegex.Matches(markupText);
foreach (Match match in matches)
{
string tabname = match.Groups["name"].Value;
string tabcontent = HttpUtility.HtmlEncode(match.Groups["content"].Value);
markupText = markupText.Replace(match.Groups["content"].Value, tabcontent);
markupText = Regex.Replace(markupText, RegexString, ReplacementPattern, CompiledRegex.Options);
}
}
return markupText;
}
Is this what you want?
string input = "[[[tab name=dog content=cat|tab name=dog2 content=cat2]]]";
Regex r = new Regex(#"tab name=([a-z0-9]+) content=([a-z0-9]+)(\||])");
foreach (Match m in r.Matches(input))
{
Console.WriteLine("{0} : {1}", m.Groups[1].Value, m.Groups[2].Value);
}
http://regexr.com/3boot
Maybe string.split will be better in that case? For example something like that :
strgin str = "[[[tab name=dog content=cat|tab name=dog2 content=cat2]]]";
foreach(var entry in str.Split('|')){
var eqBlocks = entry.Split('=');
var tabName = eqBlocks[1].TrimEnd(" content");
var content = eqBlocks[2];
}
Ugly code, but should work.
Try this:
Starts with a word boundary and followed only by allowed characters.
/\b[\w =]*/g
https://regex101.com/r/cI7jS7/1
Just distill the regex pattern down to the individual tab patterns such as name=??? content=??? and match that only. That pattern which will make each Match (two in you example) where the data can be extracted.
string text = #"[[[tab name=dog content=cat|tab name=dog2 content=cat2]]]";
string pattern = #"name=(?<Name>[^\s]+)\scontent=(?<Content>[^\s|\]]+)";
var result = Regex.Matches(text, pattern)
.OfType<Match>()
.Select(mt => new
{
Name = mt.Groups["Name"].Value,
Content = mt.Groups["Content"].Value,
});
The result is an enumerable list with the created dynamic entities with the tabs needed which can be directly bound to the control:
Note in the set notation [^\s|\]] the pipe | is treated as a literal in the set and not used as an or. The bracket ] does have to be escaped though to be treated as a literal. Finally the logic the parse will look for: "To not (^) be a space or a pipe or a brace for that set".
In C#, I have a string comes from a file in this format:
Type="Data"><Path.Style><Style
or maybe
Type="Program"><Rectangle.Style><Style
,etc. Now I want to only extract the Data or Program part of the Type element. For that, I used the following code:
string output;
var pair = inputKeyValue.Split('=');
if (pair[0] == "Type")
{
output = pair[1].Trim('"');
}
But it gives me this result:
output=Data><Path.Style><Style
What I want is:
output=Data
How to do that?
This code example takes an input string, splits by double quotes, and takes only the first 2 items, then joins them together to create your final string.
string input = "Type=\"Data\"><Path.Style><Style";
var parts = input
.Split('"')
.Take(2);
string output = string.Join("", parts); //note: .net 4 or higher
This will make output have the value:
Type=Data
If you only want output to be "Data", then do
var parts = input
.Split('"')
.Skip(1)
.Take(1);
or
var output = input
.Split('"')[1];
What you can do is use a very simple regular express to parse out the bits that you want, in your case you want something that looks like this and then grab the two groups that interest you:
(Type)="(\w+)"
Which would return in groups 1 and 2 the values Type and the non-space characters contained between the double-quotes.
Instead of doing many split, why don't you just use Regex :
output = Regex.Match(pair[1].Trim('"'), "\"(\w*)\"").Value;
Maybe I missed something, but what about this:
var str = "Type=\"Program\"><Rectangle.Style><Style";
var splitted = str.Split('"');
var type = splitted[1]; // IE Data or Progam
But you will need some error handling as well.
How about a regex?
var regex = new Regex("(?<=^Type=\").*?(?=\")");
var output = regex.Match(input).Value;
Explaination of regex
(?<=^Type=\") This a prefix match. Its not included in the result but will only match
if the string starts with Type="
.*? Non greedy match. Match as many characters as you can until
(?=\") This is a suffix match. It's not included in the result but will only match if the next character is "
Given your specified format:
Type="Program"><Rectangle.Style><Style
It seems logical to me to include the quote mark (") when splitting the strings... then you just have to detect the end quote mark and subtract the contents. You can use LinQ to do this:
string code = "Type=\"Program\"><Rectangle.Style><Style";
string[] parts = code.Split(new string[] { "=\"" }, StringSplitOptions.None);
string[] wantedParts = parts.Where(p => p.Contains("\"")).
Select(p => p.Substring(0, p.IndexOf("\""))).ToArray();
Lets say I have a text file with the line below within it. I want to take both values within the quotations by matching between (" and "), so that would be I retreive ABC and DEF and put them in a string list or something, what's the best way of doing this? It's so annoying
If EXAMPLEA("ABC") AND EXAMPLEB("DEF")
Assuming a case where the value between the double quotes can not contain escaped double quotes might work like this:
var text = "If EXAMPLEA(\"ABC\") AND EXAMPLEB(\"DEF\")";
Regex pattern = new Regex("\"[^\"]*\"");
foreach (Match match in pattern.Matches(text))
{
Console.WriteLine(match.Value.Trim('"'));
}
But this is only one of the many ways you could do it and maybe not the smartest way out there. Try something yourself!
Best way...
List<string> matches=Regex.Matches(File.ReadAllText(yourPath),"(?<="")[^""]*(?="")")
.Cast<Match>()
.Select(x=>x.Value)
.ToList();
This pattern should do the trick:
\"([^"]*)\"
string str = "If EXAMPLEA(\"ABC\") AND EXAMPLEB(\"DEF\")";
MatchCollection matched = Regex.Matches(str, #"\""([^\""]*)\""");
foreach (Match match in matched)
{
Console.WriteLine(match.Groups[1].Value);
}
Note that the quotation marks are doubled in the actual code in order to escape them. And the code refers to group [1] to get just the part inside the parentheses.
IEnumerable<string> matches =
from Match match
in Regex.Matches(File.ReadAllText(filepath), #"\""([^\""]*)\""")
select match.Groups[1].Value;
Others already posted some answers, but my takes into account that you just want ABC and DEF in your example, without quotation marks and save it in a IEnumerable<string>.
How to match all first digits before # in this line
26909578#Sbrntrl_7x06-lilla.avi#356028416#2012-10-24 09:06#0#http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html#[URL=http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html]http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html[/URL]#http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html#http://bitshare.com/?f=dvk9o1oz#http://bitshare.com/delete/dvk9o1oz/4511e6f3612961f961a761adcb7e40a0/Sbrntrl_7x06-lilla.avi.html
Im trying to get this number 26909578
My try
string text = #"26909578#Sbrntrl_7x06-lilla.avi#356028416#2012-10-24 09:06#0#http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html#[URL=http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html]http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html[/URL]#http://bitshare.com/files/dvk9o1oz/Sbrntrl_7x06-lilla.avi.html#http://bitshare.com/?f=dvk9o1oz#http://bitshare.com/delete/dvk9o1oz/4511e6f3612961f961a761adcb7e40a0/Sbrntrl_7x06-lilla.avi.html";
MatchCollection m1 = Regex.Matches(text, #"(.+?)#", RegexOptions.Singleline);
but then its outputs all text
Make it explicit that it has to start at the beginning of the string:
#"^(.+?)#"
Alternatively, if you know that this will always be a number, restrict the possible characters to digits:
#"^\d+"
Alternatively use the function Match instead of Matches. Matches explicitly says, "give me all the matches", while Match will only return the first one.
Or, in a trivial case like this, you might also consider a non-RegEx approach. The IndexOf() method will locate the '#' and you could easily strip off what came before.
I even wrote a sscanf() replacement for C#, which you can see in my article A sscanf() Replacement for .NET.
If you dont want to/dont like to use regex, use a string builder and just loop until you hit the #.
so like this
StringBuilder sb = new StringBuilder();
string yourdata = "yourdata";
int i = 0;
while(yourdata[i]!='#')
{
sb.Append(yourdata[i]);
i++;
}
//when you get to that # your stringbuilder will have the number you want in it so return it with .toString();
string answer = sb.toString();
The entire string (except the final url) is composed of segments that can be matched by (.+?)#, so you will get several matches. Retrieve only the first match from the collection returned by matching .+?(?=#)