I have hundreds of bib references in a file, and they have the following syntax:
#article{tabata1999precise,
title={Precise synthesis of monosubstituted polyacetylenes using Rh complex catalysts.
Control of solid structure and $\pi$-conjugation length},
author={Tabata, Masayoshi and Sone, Takeyuchi and Sadahiro, Yoshikazu},
journal={Macromolecular chemistry and physics},
volume={200},
number={2},
pages={265--282},
year={1999},
publisher={Wiley Online Library}
}
I would like to title case (aka Proper Case) the journal name in Notepad++ using regular expression. For example, from Macromolecular chemistry and physics to Macromolecular Chemistry and Physics.
I am able to find all instances using:
(?<=journal\=\{).*?(?=\})
but I am unable to change the case via Edit > Convert Case to. Apparently it doesn't work on find all and I have to go one by one.
Next, I tried recording and running a macro but Notepad++ just hangs indefinitely when I try to run it (option to run until the end of the file).
So my question is: does anyone know the replace regex syntax I could use to change the case? Ideally, I would also like to use "|" exclusions for particular words such as " of ", " an ", " the ", etc. I tried to play with some of the examples provided here, but I was not able to integrate it into my look-aheads.
Thank you in advance, I'd appreciate any help.
This works for any number of words:
Ctrl+H
Find what: (?:journal={|\G)\K(?:(\w{4,})|(\w+))(\h*)
Replace with: \u$1\E$2$3
CHECK Wrap around
CHECK Regular expression
Replace all
Explanation:
(?: # non capture group
journal={ # literally
| # OR
\G # restart from last match position
) # end group
\K # forget all we have seen until this position
(?: # non capture group
(\w{4,}) # group 1, a word with 4 or more characters
| # OR
(\w+) # group 2, a word of any length
) # end group
(\h*) # group 3, 0 or more horizontal spaces
Replacement:
\u # uppercased the first letter of the following
$1 # content of group 1
\E # stop the uppercased
$2 # content of group 2
$3 # content of group 3
Screenshot (before):
Screenshot (after):
if the format is always in the form:
journal={Macromolecular chemistry and physics},
i.e. journal followed by 3 words then use the following:
Find: journal={(\w+)\s*(\w+)\s*(\w+)\s*(\w+)
Replace with: journal={\u\1 \u\2 \l\3 \u\4
You can modify that if you have more words to replace by adding more \u\x, where x is the position of the word.
Hope it helps to give you an idea to move forward for a better solution.
\u translates the next letter to uppercase (used for all other words)
\l translates the next letter to lowercase (used for the word "and")
\1 replaces the 1st captured () search group
\2 replaces the 2nd captured () search group
\3 replaces the 3rd captured () search group
Related
I have three lines of tab-separated values:
SELL 2022-06-28 12:42:27 39.42 0.29 11.43180000 0.00003582
BUY 2022-06-28 12:27:22 39.30 0.10 3.93000000 0.00001233
_____2022-06-28 12:27:22 39.30 0.19 7.46700000 0.00002342
The first two have 'SELL' or 'BUY' as first value but the third one has not, hence a Tab mark where I wrote ______:
I would like to capture the following using Regex:
My expression ^(BUY|SELL).+?\r\n\t does not work as it gets me this:
I do know why outputs this - adding an lazy-maker '?' obviously won't help. I don't get lookarounds to work either, if they are the right means at all. I need something like 'Match \r\n\t only or \r\n(?:^\t) at the end of each line'.
The final goal is to make the three lines look at this at the end, so I will need to replace the match with capturing groups:
Can anyone point me to the right direction?
Ctrl+H
Find what: ^(BUY|SELL).+\R\K\t
Replace with: $1\t
CHECK Match case
CHECK Wrap around
CHECK Regular expression
UNCHECK . matches newline
Replace all
Explanation:
^ # beginning of line
(BUY|SELL) # group 1, BUY or SELL
.+ # 1 or more any character but newline
\R # any kind of linebreak
\K # forget all we have seen until this position
\t # a tabulation
Replacement:
$1 # content of group 1
\t # a tabulation
Screenshot (before):
Screenshot (after):
You can use the following regex ((BUY|SELL)[^\n]+\n)\s+ and replace with \1\2.
Regex Match Explanation:
((BUY|SELL)[^\n]+\n): Group 1
(BUY|SELL): Group 2
BUY: sequence of characters "BUY" followed by a space
|: or
SELL: sequence of characters "SELL" followed by a space
[^\n]+: any character other than newline
\n: newline character
\s+: any space characters
Regex Replace Explanation:
\1: Reference to Group 1
\2: Reference to Group 2
Check the demo here. Tested on Notepad++ in a private environment too.
Note: Make sure to check the "Regular expression" checkbox.
Regex
I have a text file with the following text:
andal-4.1.0.jar
besc_2.1.0-beta
prov-3.0.jar
add4lib-1.0.jar
com_lab_2.0.jar
astrix
lis-2_0_1.jar
Is there any way i can split the name and the version using regex. I want to use the results to make two columns 'Name' and 'Version' in excel.
So i want the results from regex to look like
andal 4.1.0.jar
besc 2.1.0-beta
prov 3.0.jar
add4lib 1.0.jar
com_lab 2.0.jar
astrix
lis 2_0_1.jar
So far I have used ^(?:.*-(?=\d)|\D+) to get the Version and -\d.*$ to get the Name separately. The problem with this is that when i do it for a large text file, the results from the two regex are not in the same order. So is there any way to get the results in the way I have mentioned above?
Ctrl+H
Find what: ^(.+?)[-_](\d.*)$
Replace with: $1\t$2
check Wrap around
check Regular expression
UNCHECK . matches newline
Replace all
Explanation:
^ # beginning of line
(.+?) # group 1, 1 or more any character but newline, not greedy
[-_] # a dash or underscore
(\d.*) # group 2, a digit then 0 or more any character but newline
$ # end of line
Replacement:
$1 # content of group 1
\t # a tabulation, you may replace with what you want
$2 # content of group 2
Result for given example:
andal 4.1.0.jar
besc 2.1.0-beta
prov 3.0.jar
add4lib 1.0.jar
com_lab 2.0.jar
astrix
lis 2_0_1.jar
Not quite sure what you meant for the problem in large file, and I believe the two regex you showed are doing opposite as what you said: first one should get you the name and second one should give you version.
Anyway, here is the assumption I have to guess what may make sense to you:
"Name" may follow by - or _, followed by version string.
"Version" string is something preceded by - or _, with some digit, followed by a dot or underscore, followed by some digit, and then any string.
If these assumption make sense, you may use
^(.+?)(?:[-_](\d+[._]\d+.*))?$
as your regex. Group 1 is will be the name, Group 2 will be the Version.
Demo in regex101: https://regex101.com/r/RnwMaw/3
Explanation of regex
^ start of line
(.+?) "Name" part, using reluctant match of
at least 1 character
(?: )? Optional group of "Version String", which
consists of:
[-_] - or _
( ) Followed by the "Version" , which is
\d+ at least 1 digit,
[._] then 1 dot or underscore,
\d+ then at least 1 digit,
.* then any string
$ end of line
I have a list of words, for example:
Good -> Bad
Sky -> Blue
Gray -> Black
etc...
What is the best why to do find&replace in notepad++?
I tried this:
FIND: (Good)|(Sky)|(Gray)
Replace: (?1Bad)(?2Blue)(?3Black)
but it doesn't work :(
any idea? or suggestions ?
There is however a workaround if you add this newline at the end of your text (it must be the last line, so don't press enter at the end):
#Good:Bad#Sky:Blue#Gray:Black#
and if you use this pattern:
(Good|Blue|Black)(?=(?:.*\R)++#(?>[^#]+#)*?\1:([^#]+))|\R.++(?!\R)
with this replacement:
$2
pattern details:
(Good|Blue|Black) # this part capture the word in group 1
(?= # then we reach the last line in a lookakead
(?:.*\R)++ # match all the lines until the last line
#(?>[^#]+#)*? # advance until the good value is found
\1 # the good value (backreference to the capture group 1)
: ([^#]+) # capture the replacement in group 2
) # close the lookbehind
| # OR
\R.++(?!\R) # match the last line (to remove it)
Note: to make the pattern more efficient, you can put it in a non capturing group and add a lookahead at the begining with all the first possible characters to quickly discard useless positions in the string:
(?=[GB\r\n])(?:\b(Good|Blue|Black)\b(?=(?:.*\R)++#(?>[^#]+#)*?\1:([^#]+))|\R.++(?!\R))
I'm using notepad++'s regular expression search function to find all strings in a .txt document that do not contain a specific value (HIJ in the below example), where all strings begin with the same value (ABC in the below example).
How would I go about doing this?
Example
Every String starts with ABC
ABC is never used in a string other than at the beginning,
ABCABC123 would be two strings --"ABC" and "ABC123"
HIJ may appear multiple times in a string
I need to find the strings that do not contain HIJ
Input is one long file with no line breaks, but does contain special characters (*, ^, #, ~, :) and spaces
Example Input:
ABC1234HIJ56ABC7#HIJABC89ABCHIJ0ABE:HIJABC12~34HI456J
Example Input would be viewed as the following strings
ABC1234HIJ56
ABC7#HIJ
ABC89
ABCHIJ0ABE:HIJ
ABC12%34HI456J
The Third and Fifth strings both lack "HIJ" and therefore are included in the output, all others are not included in the output.
Example desired output:
ABC89
ABC12~34HI456J
I am 99% new to RegEx and will be looking more into it in the future, as my job description suddenly changed earlier this week when someone else in the company left suddenly, and therefore I have been doing this manually by searching (ABC|HIJ) and going through the search function's results looking for "ABC" appearing twice in a row. Supposedly the former employee was able to do this in an automated way, but left no documentation.
Any help would be appreciated!
This question is a repeat of a prior question I asked, but I was very very bad at formatting a question and it seems to have sunk beyond noticeable levels.
You can find the items you want with:
ABC(?:[^HA]+|H(?!IJ)|A(?!BC))*+(?=ABC|$)
Note: in this first pattern, you can replace (?=ABC|$) with (?!HIJ)
pattern details:
ABC
(?: # non-capturing group
[^HA]+ # all that is not a H or an A
| # OR
H(?!IJ) # an H not followed by IJ
|
A(?!BC) # an A not followed by BC
)*+ # repeat the group
(?=ABC|$) # followed by "ABC" or the end of the string
Note: if you want to remove all that is not the items you want you can make this search replace:
search: (?:ABC(?:[^HA]+|H(?!IJ)|A(?!BC))*+HIJ.*?(?=ABC|$))+|(?=ABC)
replace: \r\n
you could use this pattern
(ABC(?:(?!HIJ).)*?)(?=ABC|\R)
Demo
( # Capturing Group (1)
ABC # "ABC"
(?: # Non Capturing Group
(?! # Negative Look-Ahead
HIJ # "HIJ"
) # End of Negative Look-Ahead
. # Any character except line break
) # End of Non Capturing Group
*? # (zero or more)(lazy)
) # End of Capturing Group (1)
(?= # Look-Ahead
ABC # "ABC"
| # OR
\R # <line break>
) # End of Look-Ahead
You can use the following expression to match your criterion:
(^ABC(?:(?!HIJ).)*$)
This starts with ABC and looks ahead (negative) for HIJ pattern. The pattern works for the separated strings.
For a single line pattern (as provided in your question), a slight modification of this works (as follows):
(ABC(?:(?!HIJ).)*?)(?=ABC|$)
In a text editor, I want to replace a given word with the number of the line number on which this word is found. Is this is possible with Regex?
Recursion, Self-Referencing Group (Qtax trick), Reverse Qtax or Balancing Groups
Introduction
The idea of adding a list of integers to the bottom of the input is similar to a famous database hack (nothing to do with regex) where one joins to a table of integers. My original answer used the #Qtax trick. The current answers use either Recursion, the Qtax trick (straight or in a reversed variation), or Balancing Groups.
Yes, it is possible... With some caveats and regex trickery.
The solutions in this answer are meant as a vehicle to demonstrate some regex syntax more than practical answers to be implemented.
At the end of your file, we will paste a list of numbers preceded with a unique delimiter. For this experiment, the appended string is :1:2:3:4:5:6:7 This is a similar technique to a famous database hack that uses a table of integers.
For the first two solutions, we need an editor that uses a regex flavor that allows recursion (solution 1) or self-referencing capture groups (solutions 2 and 3). Two come to mind: Notepad++ and EditPad Pro. For the third solution, we need an editor that supports balancing groups. That probably limits us to EditPad Pro or Visual Studio 2013+.
Input file:
Let's say we are searching for pig and want to replace it with the line number.
We'll use this as input:
my cat
dog
my pig
my cow
my mouse
:1:2:3:4:5:6:7
First Solution: Recursion
Supported languages: Apart from the text editors mentioned above (Notepad++ and EditPad Pro), this solution should work in languages that use PCRE (PHP, R, Delphi), in Perl, and in Python using Matthew Barnett's regex module (untested).
The recursive structure lives in a lookahead, and is optional. Its job is to balance lines that don't contain pig, on the left, with numbers, on the right: think of it as balancing a nested construct like {{{ }}}... Except that on the left we have the no-match lines, and on the right we have the numbers. The point is that when we exit the lookahead, we know how many lines were skipped.
Search:
(?sm)(?=.*?pig)(?=((?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?:(?1)|[^:]+)(:\d+))?).*?\Kpig(?=.*?(?(2)\2):(\d+))
Free-Spacing Version with Comments:
(?xsm) # free-spacing mode, multi-line
(?=.*?pig) # fail right away if pig isn't there
(?= # The Recursive Structure Lives In This Lookahead
( # Group 1
(?: # skip one line
^
(?:(?!pig)[^\r\n])* # zero or more chars not followed by pig
(?:\r?\n) # newline chars
)
(?:(?1)|[^:]+) # recurse Group 1 OR match all chars that are not a :
(:\d+) # match digits
)? # End Group
) # End lookahead.
.*?\Kpig # get to pig
(?=.*?(?(2)\2):(\d+)) # Lookahead: capture the next digits
Replace: \3
In the demo, see the substitutions at the bottom. You can play with the letters on the first two lines (delete a space to make pig) to move the first occurrence of pig to a different line, and see how that affects the results.
Second Solution: Group that Refers to Itself ("Qtax Trick")
Supported languages: Apart from the text editors mentioned above (Notepad++ and EditPad Pro), this solution should work in languages that use PCRE (PHP, R, Delphi), in Perl, and in Python using Matthew Barnett's regex module (untested). The solution is easy to adapt to .NET by converting the \K to a lookahead and the possessive quantifier to an atomic group (see the .NET Version a few lines below.)
Search:
(?sm)(?=.*?pig)(?:(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*+.*?\Kpig(?=[^:]+(?(1)\1):(\d+))
.NET version: Back to the Future
.NET does not have \K. It its place, we use a "back to the future" lookbehind (a lookbehind that contains a lookahead that skips ahead of the match). Also, we need to use an atomic group instead of a possessive quantifier.
(?sm)(?<=(?=.*?pig)(?=(?>(?:^(?:(?!pig)[^\r\n])*(?:\r?\n))(?=[^:]+((?(1)\1):\d+)))*).*)pig(?=[^:]+(?(1)\1):(\d+))
Free-Spacing Version with Comments (Perl / PCRE Version):
(?xsm) # free-spacing mode, multi-line
(?=.*?pig) # lookahead: if pig is not there, fail right away to save the effort
(?: # start counter-line-skipper (lines that don't include pig)
(?: # skip one line
^ #
(?:(?!pig)[^\r\n])* # zero or more chars not followed by pig
(?:\r?\n) # newline chars
)
# for each line skipped, let Group 1 match an ever increasing portion of the numbers string at the bottom
(?= # lookahead
[^:]+ # skip all chars that are not colons
( # start Group 1
(?(1)\1) # match Group 1 if set
:\d+ # match a colon and some digits
) # end Group 1
) # end lookahead
)*+ # end counter-line-skipper: zero or more times
.*? # match
\K # drop everything we've matched so far
pig # match pig (this is the match!)
(?=[^:]+(?(1)\1):(\d+)) # capture the next number to Group 2
Replace:
\2
Output:
my cat
dog
my 3
my cow
my mouse
:1:2:3:4:5:6:7
In the demo, see the substitutions at the bottom. You can play with the letters on the first two lines (delete a space to make pig) to move the first occurrence of pig to a different line, and see how that affects the results.
Choice of Delimiter for Digits
In our example, the delimiter : for the string of digits is rather common, and could happen elsewhere. We can invent a UNIQUE_DELIMITER and tweak the expression slightly. But the following optimization is even more efficient and lets us keep the :
Optimization on Second Solution: Reverse String of Digits
Instead of pasting our digits in order, it may be to our benefit to use them in the reverse order: :7:6:5:4:3:2:1
In our lookaheads, this allows us to get down to the bottom of the input with a simple .*, and to start backtracking from there. Since we know we're at the end of the string, we don't have to worry about the :digits being part of another section of the string. Here's how to do it.
Input:
my cat pi g
dog p ig
my pig
my cow
my mouse
:7:6:5:4:3:2:1
Search:
(?xsm) # free-spacing mode, multi-line
(?=.*?pig) # lookahead: if pig is not there, fail right away to save the effort
(?: # start counter-line-skipper (lines that don't include pig)
(?: # skip one line that doesn't have pig
^ #
(?:(?!pig)[^\r\n])* # zero or more chars not followed by pig
(?:\r?\n) # newline chars
)
# Group 1 matches increasing portion of the numbers string at the bottom
(?= # lookahead
.* # get to the end of the input
( # start Group 1
:\d+ # match a colon and some digits
(?(1)\1) # match Group 1 if set
) # end Group 1
) # end lookahead
)*+ # end counter-line-skipper: zero or more times
.*? # match
\K # drop match so far
pig # match pig (this is the match!)
(?=.*(\d+)(?(1)\1)) # capture the next number to Group 2
Replace: \2
See the substitutions in the demo.
Third Solution: Balancing Groups
This solution is specific to .NET.
Search:
(?m)(?<=\A(?<c>^(?:(?!pig)[^\r\n])*(?:\r?\n))*.*?)pig(?=[^:]+(?(c)(?<-c>:\d+)*):(\d+))
Free-Spacing Version with Comments:
(?xm) # free-spacing, multi-line
(?<= # lookbehind
\A #
(?<c> # skip one line that doesn't have pig
# The length of Group c Captures will serve as a counter
^ # beginning of line
(?:(?!pig)[^\r\n])* # zero or more chars not followed by pig
(?:\r?\n) # newline chars
) # end skipper
* # repeat skipper
.*? # we're on the pig line: lazily match chars before pig
) # end lookbehind
pig # match pig: this is the match
(?= # lookahead
[^:]+ # get to the digits
(?(c) # if Group c has been set
(?<-c>:\d+) # decrement c while we match a group of digits
* # repeat: this will only repeat as long as the length of Group c captures > 0
) # end if Group c has been set
:(\d+) # Match the next digit group, capture the digits
) # end lokahead
Replace: $1
Reference
Qtax trick
On Which Line Number Was the Regex Match Found?
Because you didn't specify which text editor, in vim it would be:
:%s/searched_word/\=printf('%-4d', line('.'))/g (read more)
But as somebody mentioned it's not a question for SO but rather Super User ;)
I don't know of an editor that does that short of extending an editor that allows arbitrary extensions.
You could easily use perl to do the task, though.
perl -i.bak -e"s/word/$./eg" file
Or if you want to use wildcards,
perl -MFile::DosGlob=glob -i.bak -e"BEGIN { #ARGV = map glob($_), #ARGV } s/word/$./eg" *.txt