Regex Pattern help.
Me and my friend pedrofire, that�s probably around forums somewhere, are newbies. We are trying to get a log file line and process correctly but we are found some dificculties to create the right expression pattern.
My log have lines like:
User 'INEXIST' with session 'ax1zjd8yEeHh' added content '769' with uri 'http://mail.yahoo.com/'.
User 'INEXIST' with session 'ax1zjd8yEeHh' changed folder from 'E-mails' to 'Milhagem'.
User 'INEXIST' with session 'a8jXrY_N38ja' updated all content of folder 'Bancos'.
i need to get the following data
USER - [INEXIST]
SESSION - [ax1zjd8yEeHh]
ACTION - [added] or [changed] or [updated].
Getting the user and the session is easy, but i am having difficulties grabing the action, because i need to take just the action word without blank spaces igonring the words content or folder or all.
I m trying this for hours, but to a newbie is a little dificult
Any help is welcome
Thanks
Peter Redman
Hi,
How about something like:
import java.util.regex.*;
public class RegexpTest
private static final Pattern p = Pattern.compile(
"^User '([^']+)' with session '([^']+)' ([^ ]+) .*$" );
public static void main( String[] argv )
find( "User 'INEXIST' with session 'ax1zjd8yEeHh' added content '769' with uri 'http://mail.yahoo.com/'." );
find( "User 'INEXIST' with session 'ax1zjd8yEeHh' changed folder from 'E-mails' to 'Milhagem'." );
find( "User 'INEXIST' with session 'a8jXrY_N38ja' updated all content of folder 'Bancos'." );
public static void find( String text )
System.out.println( "Text: " + text );
Matcher m = p.matcher( text );
if ( ! m.matches() ) return;
String user = m.group(1);
String session = m.group(2);
String action = m.group(3);
System.out.println( "User: " + user );
System.out.println( "Session: " + session );
System.out.println( "Action: " + action );
}which results in:
Text: User 'INEXIST' with session 'ax1zjd8yEeHh' added content '769' with uri 'http://mail.yahoo.com/'.
User: INEXIST
Session: ax1zjd8yEeHh
Action: added
Text: User 'INEXIST' with session 'ax1zjd8yEeHh' changed folder from 'E-mails' to 'Milhagem'.
User: INEXIST
Session: ax1zjd8yEeHh
Action: changed
Text: User 'INEXIST' with session 'a8jXrY_N38ja' updated all content of folder 'Bancos'.
User: INEXIST
Session: a8jXrY_N38ja
Action: updatedYou should probably change the Pattern to be less explicit about what it matches. i.e. changes spaces to \\s+ or something similar.
Ol.
Similar Messages
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RegEx, need help with pattern matching
im going thru a list of Strings...and id like to match some input to it..but the tutorial for regex wont let me find a smaller string within a bigger one if it exists
for example i have a String "java.sun.com" and i want to find "sun" or "java" or "com" or "jav" or ".co"
i think the only way regex will work is if i group the entire thing into
any ideas on how i can manipulate the string into a proper regex pattern so that itll find any of those "searches"
thanksNo, that is not correct. A regex can be constructed to return a match on anything you want. A single character, a newline character, a numeric character and any combination of them. There are limitless possibilities for pattern matching.
See here:
http://java.sun.com/j2se/1.4.1/docs/api/java/util/regex/Pattern.html
Any of the patterns may be compiled into a regex for searching using the matcher.
An alternative is to use the indexOf method of the string class to find what you are looking for.
Example:
String myString = "java.sun.com";
String matchThis = "n.co";
int patternFoundAtThisIndexPosition = myString.indexof(matchThis);patternFoundAtThisIndexPosition will be 7;
or simply:
int index = myString.indexof("sun");index will be 5; -
Regex pattern, filter delimiter in sql code
Hi,
The problem I'm having is that the regex pattern below is not catching the beginning "go" and ending "go" of a string.
"(?iu)[(?<=\\s)]\\bgo\\b(?=\\s)"
The idea is catching the "whole word", in this case the word is "go" so if the word is at the beginning of the string or at the end, i still want to include it.
So, for example:
"go select * from table1 go" -> should catch 2 "go"s but catches 0
"go go# select * from table1 --go go" -> should also catch 2 "go"s but catches 0
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I have the "[(?<=\\s)]" and the "(?=\\s)" so that the word "go" when next to a special character is not included, for example "--go".
The problem is that this also negates the beginning and ending of the string.
Code to test example: It should split at 1st, 2nd and last "go", but only splits at the 2nd "go".
String s = "go go select * from table1 --go go";
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for (int i = 0; i < queries.length; i++) {
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I really need to fix this but I'm not having much success.
Any help will be appreciated, thanks in advance.Yes,
I prefer this one: Regex Powertoy (interactive regular expressions)
It's not 100% perfect, but you can see with my example and this online tester that the 1st "go" is not matched. And this is a problem for me.
I want to eliminate the special characters like "#go" or "-go" but i don't want to eliminate the end and start of string. -
Regex Pattern For this String ":=)"
Hello All
True, this isn't the place to ask this but here it is anyway, if you can help please do.
Can anybody tell me the regex pattern for this String:
":=)"
Thanks
JohnYep, cheers it's ":=\\)"
public class Test {
public static void main( String args[] ) {
String s = "one:=)two:=)three:=)four";
String ss[] = s.split( ":=\\)" );
for( int i=0; i<ss.length; i++ )
System.out.println( "ss["+i+"] = {" + ss[i] + "}" );
}resulting in:
ss[0] = {one}
ss[1] = {two}
ss[2] = {three}
ss[3] = {four} -
Searching Site Content Using REGEX Patterns
Intent: Detect content in SharePoint 2013 lists and libraries that matches a REGEX pattern, like social security numbers.
SharePoint 2013 only exposes KQL and FQL languages.
http://msdn.microsoft.com/en-us/library/office/jj163973.aspx
I am comfortable writing this as an App. I do not know how to pass the search index through a REGEX match. Perhaps there is a way to access the data on more of a server model instead of through the client APIs?Hi Eric,
For achieving your demand, you can write a Content Enrichment Web Service to extract regex patterns from a managed property.
Here is a blog you can refer to:
SharePoint 2013 Content Enrichment: Regular Expression Data Extraction:
http://blogs.technet.com/b/peter_dempsey/archive/2013/12/04/sharepoint-2013-content-enrichment-regular-expression-data-extraction.aspx
Reference:
http://msdn.microsoft.com/en-us/library/office/jj163982.aspx
http://blogs.msdn.com/b/richard_dizeregas_blog/archive/2013/06/19/advanced-content-enrichment-in-sharepoint-2013-search.aspx
Thanks,
Eric
Forum Support
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TechNet Community Support -
Hello,
I have parsed a text file and want to use a java regex pattern to get the status like "warning" and "ok" ("ok" should follow the "warning" then need to parser it ), does anyone have idea? How to find ok that follows the warning status? thanks in advance!
text example
121; test test; test0; ok; test test
121; test test; test0; ok; test test
123; test test; test1; warning; test test
124; test test; test1; ok; test test
125; test test; test2; warning; test test
126; test test; test3; warning; test test
127; test test; test4; warning; test test
128; test test; test2; ok; test test
129; test test; test3; ok; test testjava code:
String flag= "warning";
while ((line= bs.readLine()) != null) {
String[] tokens = line.split(";");
for(int i=1; i<tokens.length; i++){
Pattern pattern = Pattern.compile(flag);
Matcher matcher = pattern.matcher(tokens);
if(matcher.matches()){
// save into a listsorry, I try to expain it in more details. I want to parse this text file and save the status like "warning" and "ok" into a list. The question is I only need the "ok" that follow the "warning", that means if "test1 warning" then looking for "test1 ok".
121; content; test0; ok; 12444 <-- that i don't want to have
123; content; test1; warning; 126767
124; content; test1; ok; 1265 <-- that i need to have
121; content; test9; ok; 12444 <-- that i don't want to have
125; content; test2; warning; 2376
126; content; test3; warning; 78787
128; content; test2; ok; 877666 <-- that i need to have
129; content; test3; ok; 877666 <-- that i need to have
// here maybe a regex pattern could be deal with my problem
// if "warning|ok" then list all element with the status "warning and ok"
String flag= "warning";
while ((line= bs.readLine()) != null) {
String[] tokens = line.split(";");
for(int i=1; i<tokens.length; i++){
Pattern pattern = Pattern.compile(flag);
Matcher matcher = pattern.matcher(tokens);
if(matcher.matches()){
// save into a list -
Util.regex.Pattern documentation
The 1.5 documentation for util.regex.Pattern defines quantifiers that are greedy, reluctant, or possessive. The definitions of these quantifiers seem to be the same. For example, X?, X??, and X?+ are each defined as "X, once or not at all." Is this a mistake? If not, what's that difference among greedy, reluctant, and possessive?
It's not a mistake, it's just incomplete. A normal (greedy) quantifier matches as many times as it can, but will back off if necessary to achieve an overall match. A reluctant quantifier matches the minimum number of times that it has to, and only tries to match more if that's the only way to achieve an overall match. A greedy quantifier matches as many times as it can and never backs off, even if that makes an overall match impossible. Here's a demonstration:import java.util.regex.*;
public class Test
public static void main(String[] args)
String input = "XXXXX";
Pattern p1 = Pattern.compile("(X+)(X+)");
Pattern p2 = Pattern.compile("(X+?)(X+)");
Pattern p3 = Pattern.compile("(X++)(X+)");
Matcher m = p1.matcher(input);
if (m.matches())
System.out.println("p1:\t" + m.group(1) + "\t" + m.group(2));
m = p2.matcher(input);
if (m.matches())
System.out.println("p2:\t" + m.group(1) + "\t" + m.group(2));
m = p3.matcher(input);
if (m.matches())
System.out.println("p3:\t" + m.group(1) + "\t" + m.group(2));
p1: XXXX X
p2: X XXXXIn p1, the X+ in the first group initially matches all five X's, then hands off to the second group. The X+ there has to match at least one X, but there are none left. So the first group gives up one of its X's, the second group matches it, and Bob's your uncle.
In p2, the X+? has to match at least one X, so it does, then hands off to the second group, which happily gobbles up the rest of the input.
In p3, the X++ matches all the X's, but refuses to back off and give the X+ in the second group the one X it needs, so the match fails. -
Applying REGEX-pattern into XML File
I have the following problem:
I have an xml-file. let's say...
<NODE><NODE1 attr1="a1" attr2="a2">
<NAME> abc</NAME>
<VERSION> 1.0</VERSION>
</NODE1>
<NODE2 attr1="a3" attr2="a4">
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<VERSION> 3.1</VERSION>
</NODE2></NODE>I need to know "HOW can I get the values of <NAME></NAME> and <VERSION></VERSION> without using DOM.
Since my xml-file is pretty big and DOM will take much Memory, i want to avoid it.
Can anybody suggest some "Regex pattern" so that i can apply it on the xml-file (after converting into String)
Thanks in AdvanceThat worked perfectly. I assumed ( insert comment here ) that the members of the Properties objects were Strings, and therefore followed the same rules where "\" characters are concerned.
Thank you for pointing out the difference between the two objects, I am not sure how long it would have taken me to figure that out.
Regards,
John Gooch -
Regex - Pattern for positive numbers
Hi,
I wanna check for positive numbers.
My code so far:
Pattern p = Pattern.compile("\\d+");
Matcher m = p.matcher(str);
boolean b = m.matches(); But I don't know how to check for positive numbers (including 0).
Thanks
JonnyJust to make your life easier:
package samples;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
* @author notivago
public class Positive {
public static void main(String[] args) {
String input = "- 12 +10 10 -12 15 -12,000 10,000 5,000.42";
Pattern p = Pattern.compile( "\\b(?<!-\\s?|\\.|,)([0-9]+(?:,?[0-9]{3})*(?:\\.[0-9]*)?)" );
Matcher matcher = p.matcher( input );
while( matcher.find() ) {
System.out.println( "Match: " + matcher.group(1) );
} -
Help in finding a regex pattern
Dear all REGEX Gurus.
We have a comma separated string like this:
132, 143, "222, 144, abc", 227, 888, "222#55#ab"
As you might have guessed, this comes from excel when we save as CSV file, and when one of the columns in excel has the value 222,144,abc. So excel itself puts " at beginning and end.
Now we want to split it based on ',' like this:
132
143
222,144,abc
227
888
222#55#ab
So what we thought is to use a REGEX to find a pattern that has anything beginning with ", ending with ", and has a comma (,) in between. We'd replace that comma with a special character.
System seems to perform greedy search if i search like this ",".
I tried this:
"([^"]+)" -> this works that it gives me all values within quotes. But I want only those which have a comma in them.
So in above, i do not want 222#55#ab to come.
Tried various combinations, but not able to get it work.
Can someone advise please how to achieve it?
Thanks in adv.Hi,
I am in 4.6 version and dont have the facility to regex it for you.
Just wrote a sample code, if useful then use it.
DATA:lv_string(100) TYPE c.
DATA:lv_len TYPE i.
TYPES:BEGIN OF ty,
field(100) TYPE c,
END OF ty.
DATA:it TYPE TABLE OF ty.
FIELD-SYMBOLS:<fs> TYPE ty.
lv_string = '132, 143, "222, 144, abc", 227, 888, "222#55#ab"'.
CONDENSE lv_string NO-GAPS.
SPLIT lv_string AT '"' INTO TABLE it.
CLEAR lv_string.
LOOP AT it ASSIGNING <fs>.
IF <fs> IS INITIAL.
delete it index sy-tabix.
CONTINUE.
ENDIF.
lv_len = strlen( <fs> ) - 1.
IF ( <fs>+lv_len(1) CA '"' ) OR ( <fs>+lv_len(1) CA ',' ).
<fs>+lv_len(1) = ' '.
ENDIF.
IF ( <fs>+0(1) CA '"' ) OR ( <fs>+0(1) CA ',' ).
<fs>+0(1) = ' '.
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CONDENSE <fs>.
WRITE:/ <fs>.
ENDLOOP. -
Help with regex pattern matching.
Hi everyone
I am trying to write a regex that will extract each of the links from a piece of HTML code. The sample piece of HTML is as follows:
<td class="content" valign="top">
<!-- BODY CONTENT -->
<script language="JavaScript"
src="http://chat.livechatinc.net/licence/1023687/script.cgi?lang=en&groups=0"></script>
<a href="makeReservation.html">Making a reservation</a><br/>
<a href="changeAccount.html">Changing my account</a><br/>
<a href="viewBooking.html">Viewing my bookings</a><br/>I am interested in extracting each link and the corrresponding text for that link into groups.
So far I have the following regex <td class="content" valign="top">.*?<a href="(.*?)">(.*?)</a><br>However this regex only matches the first line in the block of links, but I need to match each line in the block of links.
Any ideas? Any suggestions are appeciated as always.
Thanks.Hi sabre,
thanks for the reply.
I am already using a while loop with matcher.find(), but it still only returns the first link based on my regex.
the code is as follows.
private static final Pattern MENU_ITEM_PATTERN = compilePattern("<td class=\"content\" valign=\"top\">.*?<a href=\"(.*?)\">(.*?)</a><br>");
private LinkedHashMap<String,String> findHelpLinks(String body) {
LinkedHashMap<String, String> helpLinks = new LinkedHashMap<String,String>();
String link;
String linkText;
Matcher matcher = MENU_ITEM_PATTERN.matcher(body);
while(matcher.find()){
link = matcher.group(1);
linkText = matcher.group(2);
if(link != null && linkText != null){
helpLinks.put(link,linkText);
return helpLinks;
private static Pattern compilePattern(String pattern) {
return Pattern.compile(pattern, Pattern.DOTALL + Pattern.MULTILINE
+ Pattern.CASE_INSENSITIVE);
}Any ideas? -
Hi,
I'm trying to get my feet wet wtih java and regular expressions, done a lof of it in perl, but need some help with java.
I have an xml file (also working through the sax tutorial, but this question is related to regex)that has multiple elements, each element has a title tag:
<element lev1>10<title>element title</title>
<element lev2>20<title>another element title</title>
</element lev2>
</element lev1>If I have the following pattern:
Pattern Title = Pattern.compile("(?i)<title>([^<]*)</title>");that picks up the titles, but I can't distinguish which title belongs to which element. Basically what I want to have is:
Pattern coreTitle = Pattern.compile("(?i)<element lev1>(**any thing that isn't an </title> tag**)</title>");looked through the tutorials, will keep looking, I'm sure it's in there somewhere, but if someone could point me in the right direction, that would be great.
thanks,
bpJust guessing, but maybe...
Pattern.compile("(?i)<element lev1>*<title>([^<]*)</title>");
But it seems that things like parsing with SAX (or loading to a DOM) or XPath would be much better suited to parsing out XML then regexp. -
Regex Pattern Match in an extremely long string
I need to search a file containing 1 extremely long line (approximately 1 million characters), The pattern I want to search is "ABC" as long as it appears at least n times whatever user input as n. I need the position of where this pattern is found. How to best do this? I tried to break the input into blocks of 100000 characters at a time as too many characters read cause the 'java out of memory' error to occur.
Then I converted this to a string in order to use REGEX to search. My problem is how to ensure that the last few characters of the current block is also being searched too? How to write the regex expression to do this? Will breaking the input file into multiple lines help?
eg:
Searching for ABC as long as it appears at least 3 times continuously ie (ABCABCABC)
Original Line = XXXXXXXABCABCABCXXXXXXABCX
The first block of 10 characters read is XXXXXXXABCABC
The second block of 10 characters read is ABCXXXXXXABCX
The search result should be position 7 and position 22If the sequence of characters is longer than a few hundred KB, then turning it into a String requires you to have enough heap space available in the JVM to store the entire String.
If that is a problem, an alternative solution is to have a while loop over an InputStream that reads from the source of characters (a file, a network connection, stdin etc.) and looks for the string. Keep a ring buffer the size of the query string, and read the data from the InputStream into it. Then for each character read, compare the content of the ring buffer to the query string.
This way you will not use more heap space than the size of the query-string, and the size of whatever buffer you use in your InputStream (8KB for the empty constructor of BufferedInputStream at the moment) plus the odds'n ends from the implementation. -
I am using (?!^)\\b which produces all tokens and delimiters from a string.split();
I would like it to also separate a ');' pair into ')' and ';'
Any way to modify my expression to do so?Always Learning wrote:
I need help with regular expression pattern matching please.
I would like to separate words, punctuation, parenthesis, and other characters using split()
So far I have come up with string.split("(?!^)\\b|;") which separates things nicely and lops off the end of line.You can't have tested it very thoroughly since it can't possibly get even close to "separate things nicely" .
>
I would like it to ignore spaces and return just the things desired above.I really don't understand this.
>
Can you help? Seems hard to find folks with regex experience.There are plenty of us here who can help with regex but most like me expect a better requirement specification. Please spend some time providing a better specification. -
Warning on Unsaved Changes Functional Pattern --Help!
Is there anyone out there who knows how to make this work??!!
[http://www.oracle.com/technology/products/adf/patterns/11.1.1.1.0/UnsavedDataWarning.html]
Help!Frank Nimphius wrote:
Hi,
I am not familiar with the document, but options I see are
option 1: set uncommitted data warning property on the af:document to "on" (I am not sure, but think this is already available in JDeveloper 11g R1)
option 2: use the controller context (ControllerContext) of the ADFc task flow handler to detect if the transaction is dirty
option 3: use a managed bean that accesses the AM in the DataControl to check if the transaction is dirty
FrankThank you for the reply Frank. Below are my response to your options
response to option1:
I have already set the uncommitted data warning property on the af:document to "on" (yes, the option is already available in JDeveloper 11g R1) and even set the bounded task-flow inside the region of my page as "critical", but when I navigate to other pages thru the navigation items in my template header, the prompt for uncommited changes did not show.
response to option2:
Which class of my project will use the controller context to detect if the transaction is dirty? I have tried to google the uncommittedDataWarning property which lead me to the DirtyPageHandler class. I have read on DirtyPageHandler class API that in case I do not set an implementation the default implementation will be used- and if I me quote from the API -"that default implementation will always return false from isDataDirty and will do nothing in response to a trackNavigation call." I wonder if aren't there any concrete samples to make this work? As I understand, the uncommitted data warnings is one of the publicized new features of JDeveloper 11gR1. Nevertheless, I have tried to follow allong and did create my own implementation:
1.) I did override the isdataDirty method to always return true,
2.) override the trackNavigation method to "System.out.println("prompt");",
3.) and created a file named oracle.adf.view.rich.context.DirtyPageHandler in the META-INF/system folder of my project, and
4) created a one line text which represents my implementing class in the created file in #3.
but still nothing especial happened.
response to option3:
What exactly is "AM" in the DataControl?
Your feedback on this is very much appreciated.
Thanks,
pino
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