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Result separation with regex
2019 Community Moderator ElectionList of all special characters that need to be escaped in a regexA comprehensive regex for phone number validationHow to negate specific word in regex?RegEx match open tags except XHTML self-contained tagsJava RegEx with lookahead failingWhy is subtracting these two times (in 1927) giving a strange result?Getting regex dataJava - Parsing strings - String.split() versus Pattern & MatcherRegex pattern to convert comma separated StringC# .NET Regex matching too muchWhen use java regular-expression pattern.matcher(), source does not match regex.But, my hope result is ,source matches regex
0
I wrote a parser that reads a file line by line and parses it with a regex statement. (Regex below)
case "countries":
pattern = "\"(.+?)\"(\s+)?(\((.+?)\))?(\s+)?(\(.+?)\(\#(.+?)\)\)?(\s+)?(.+)";
substitution = "$1, $4, $7, $8, $10";
break;
This outputs a list with all the groups I want and each group separated by a comma. (through the result.split(",");)
Now lets say I don't want to use a comma but instead an | or an *. Changing the comma to any other string doesn't seem to change anything. What am I missing?
try (CSVWriter csvWriter = new CSVWriter(new FileWriter(myLocalPath + "CSV/" + choice.toLowerCase() + ".csv")))
Pattern r = Pattern.compile(pattern);
while (br.readLine() != null)
String nextLine = br.readLine();
Matcher matcher = r.matcher(nextLine);
String result = matcher.replaceAll(substitution);
String[] line = result.split("lorem");
csvWriter.writeNext(line, false);
catch(Exception e)
System.out.println(e);
System.out.println("Parsing done!");
java regex parsing
edited Mar 7 at 14:03
Cœur
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
|
show 3 more comments
0
I wrote a parser that reads a file line by line and parses it with a regex statement. (Regex below)
case "countries":
pattern = "\"(.+?)\"(\s+)?(\((.+?)\))?(\s+)?(\(.+?)\(\#(.+?)\)\)?(\s+)?(.+)";
substitution = "$1, $4, $7, $8, $10";
break;
This outputs a list with all the groups I want and each group separated by a comma. (through the result.split(",");)
Now lets say I don't want to use a comma but instead an | or an *. Changing the comma to any other string doesn't seem to change anything. What am I missing?
try (CSVWriter csvWriter = new CSVWriter(new FileWriter(myLocalPath + "CSV/" + choice.toLowerCase() + ".csv")))
Pattern r = Pattern.compile(pattern);
while (br.readLine() != null)
String nextLine = br.readLine();
Matcher matcher = r.matcher(nextLine);
String result = matcher.replaceAll(substitution);
String[] line = result.split("lorem");
csvWriter.writeNext(line, false);
catch(Exception e)
System.out.println(e);
System.out.println("Parsing done!");
java regex parsing
edited Mar 7 at 14:03
Cœur
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
1
Try escaping\|and\*because both are meta-characters in regex.
– Rahul
Jan 19 '18 at 13:01
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Does your input consistently have that pattern ? Your provided input aslorem. What exactly is your input ? Also check this answer.
– Rahul
Jan 19 '18 at 13:10
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22
|
show 3 more comments
0
0
0
I wrote a parser that reads a file line by line and parses it with a regex statement. (Regex below)
case "countries":
pattern = "\"(.+?)\"(\s+)?(\((.+?)\))?(\s+)?(\(.+?)\(\#(.+?)\)\)?(\s+)?(.+)";
substitution = "$1, $4, $7, $8, $10";
break;
This outputs a list with all the groups I want and each group separated by a comma. (through the result.split(",");)
Now lets say I don't want to use a comma but instead an | or an *. Changing the comma to any other string doesn't seem to change anything. What am I missing?
try (CSVWriter csvWriter = new CSVWriter(new FileWriter(myLocalPath + "CSV/" + choice.toLowerCase() + ".csv")))
Pattern r = Pattern.compile(pattern);
while (br.readLine() != null)
String nextLine = br.readLine();
Matcher matcher = r.matcher(nextLine);
String result = matcher.replaceAll(substitution);
String[] line = result.split("lorem");
csvWriter.writeNext(line, false);
catch(Exception e)
System.out.println(e);
System.out.println("Parsing done!");
java regex parsing
edited Mar 7 at 14:03
Cœur
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
I wrote a parser that reads a file line by line and parses it with a regex statement. (Regex below)
case "countries":
pattern = "\"(.+?)\"(\s+)?(\((.+?)\))?(\s+)?(\(.+?)\(\#(.+?)\)\)?(\s+)?(.+)";
substitution = "$1, $4, $7, $8, $10";
break;
This outputs a list with all the groups I want and each group separated by a comma. (through the result.split(",");)
Now lets say I don't want to use a comma but instead an | or an *. Changing the comma to any other string doesn't seem to change anything. What am I missing?
try (CSVWriter csvWriter = new CSVWriter(new FileWriter(myLocalPath + "CSV/" + choice.toLowerCase() + ".csv")))
Pattern r = Pattern.compile(pattern);
while (br.readLine() != null)
String nextLine = br.readLine();
Matcher matcher = r.matcher(nextLine);
String result = matcher.replaceAll(substitution);
String[] line = result.split("lorem");
csvWriter.writeNext(line, false);
catch(Exception e)
System.out.println(e);
System.out.println("Parsing done!");
java regex parsing
java regex parsing
edited Mar 7 at 14:03
Cœur
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
edited Mar 7 at 14:03
Cœur
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
edited Mar 7 at 14:03
Cœur
18.9k9110153
edited Mar 7 at 14:03
Cœur
18.9k9110153
edited Mar 7 at 14:03
Cœur
18.9k9110153
18.9k9110153
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
asked Jan 19 '18 at 13:00
Marco GeertsmaMarco Geertsma
4561523
4561523
1
Try escaping\|and\*because both are meta-characters in regex.
– Rahul
Jan 19 '18 at 13:01
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Does your input consistently have that pattern ? Your provided input aslorem. What exactly is your input ? Also check this answer.
– Rahul
Jan 19 '18 at 13:10
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22
|
show 3 more comments
1
Try escaping\|and\*because both are meta-characters in regex.
– Rahul
Jan 19 '18 at 13:01
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Does your input consistently have that pattern ? Your provided input aslorem. What exactly is your input ? Also check this answer.
– Rahul
Jan 19 '18 at 13:10
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22
1
1
Try escaping
\| and \* because both are meta-characters in regex.– Rahul
Jan 19 '18 at 13:01
Try escaping
\| and \* because both are meta-characters in regex.– Rahul
Jan 19 '18 at 13:01
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Does your input consistently have that pattern ? Your provided input as
lorem. What exactly is your input ? Also check this answer.– Rahul
Jan 19 '18 at 13:10
Does your input consistently have that pattern ? Your provided input as
lorem. What exactly is your input ? Also check this answer.– Rahul
Jan 19 '18 at 13:10
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22
|
show 3 more comments
1 Answer
1
active
oldest
votes
0
seems what you're missing is Pattern.quote, if argument must be read literally, indeed split argument is a regex.
String[] line = result.split(Pattern.quote("..."));
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally,or;however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings
– Nahuel Fouilleul
Jan 19 '18 at 13:44
add a comment |
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1 Answer
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0
seems what you're missing is Pattern.quote, if argument must be read literally, indeed split argument is a regex.
String[] line = result.split(Pattern.quote("..."));
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally,or;however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings
– Nahuel Fouilleul
Jan 19 '18 at 13:44
add a comment |
0
seems what you're missing is Pattern.quote, if argument must be read literally, indeed split argument is a regex.
String[] line = result.split(Pattern.quote("..."));
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally,or;however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings
– Nahuel Fouilleul
Jan 19 '18 at 13:44
add a comment |
0
0
0
seems what you're missing is Pattern.quote, if argument must be read literally, indeed split argument is a regex.
String[] line = result.split(Pattern.quote("..."));
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
seems what you're missing is Pattern.quote, if argument must be read literally, indeed split argument is a regex.
String[] line = result.split(Pattern.quote("..."));
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
edited Jan 19 '18 at 13:32
Valentin Michalak
1,222723
1,222723
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
answered Jan 19 '18 at 13:29
Nahuel FouilleulNahuel Fouilleul
14.5k11626
14.5k11626
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally,or;however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings
– Nahuel Fouilleul
Jan 19 '18 at 13:44
add a comment |
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally,or;however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings
– Nahuel Fouilleul
Jan 19 '18 at 13:44
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
Cool, i didnt know about the Pattern.quote part. Really neat to know however i dont think this is usefull for my application since my regex statement already performed as it should. Im already getting the results i want and in the groups i want. I just want to change the comma that gets added between each seperator to any other character. Still gonna look more at Pattern.quote though!
– Marco Geertsma
Jan 19 '18 at 13:40
about the choice of separator, in a csv it is generally
, or ; however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings– Nahuel Fouilleul
Jan 19 '18 at 13:44
about the choice of separator, in a csv it is generally
, or ; however if this caracter can appear in a field it must be escaped, commonly within enclosing quotes, it may be changed in CSVWriter settings– Nahuel Fouilleul
Jan 19 '18 at 13:44
add a comment |
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1
Try escaping
\|and\*because both are meta-characters in regex.– Rahul
Jan 19 '18 at 13:01
Escaping the character didnt work (java should escape characters immediately regardless if it detects its regex right?)
– Marco Geertsma
Jan 19 '18 at 13:09
Does your input consistently have that pattern ? Your provided input as
lorem. What exactly is your input ? Also check this answer.– Rahul
Jan 19 '18 at 13:10
do you have an example?
– Maurice Perry
Jan 19 '18 at 13:13
regex101.com/r/Cv4tPE/1
– Marco Geertsma
Jan 19 '18 at 13:22