In a LaTeX report I am making I have to write a regex. There is only one in the whole report, so I don't really want to use packages and so on.
This is the regex I am talking about:
^\"((\w|\s)+)\"$
I came up with this for LaTeX:
\grave{ }\backslash\"'((\backslash w\| \backslash s)+)\backslash \"' \backslash \$
This gives me like 10 errors, and I can't really see what is wrong. Okay, it looks pretty bad but all the commands should work.
Thanks in advance,
Harm
Use \verb/^\"((\w|\s)+)\"$/
Perhaps the problem is that some of those commands (\backslash, \grave) want to be in math mode, but \" doesn't. Have you tried using \verb to include the regexp verbatim? I'm not sure if it'll look like you want (it'll be typeset in a tt font), but you could do this with something like:
...
In my project I'm using a regexp \verb#^\"((\w|\s)+)\"# to do a thing.
...
Related
I have a very large .CSV document with text I need removing. The data looks like this
774431994&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774431994
774431996&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774431996
774431998&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774431998
774432000&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774432000
774432003&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774432003
774432006&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774432006
774432009&images=774431994,774431996,774431998,774432000,774432003,774432006,774432009&formats=0,0,0,0,0 /1/6/9/5/2/6/8/webimg/774432009
I'm using the following Regex which is working on http://regexr.com/3a6oa
/.{128}(?=webimg).{10}/g
It just doesn't seem to work with Textmate Search. Does anyone know why? I need to select all of this junk and replace it with nothing, the numbers are unique each time.
Thanks very much
Why are you using a lookahead in your pattern? Just use: /.{128}webimg.{10}/g
Why are you using Textmate search at all? I'd need to know more context of the problem to say for sure, but I bet a simple sed command could just be used instead:
sed -i "webimg/d" ./filename.csv
I'm using netbeans and I want to wrap $this->escape(stuff) around specific stuff in more files, using the replace feature, but there's plenty of conditions, like:
match:
$this->$variable, $variable
$this->$array['something'], $this->$array[0], $array['something'], $array[0]
do not match:
$this->partial, $this->escape, $this->form
What I have so far that works ok
replace this
echo\s+(\$this->[->a-zA-Z_']+[^\s;(])
with this
echo \$this->escape\($1\)
It doesn't work with arrays and doesn't exclude anything, also doesn't match $variable
Could anyone help out, improve the expression so that it would reduce the torture of going through so many strings by hand? Any help is appreciated.
edit: just adding the exclusions to my working example would be enough.
It's not entirely clear what parts you're trying to match. If I understood you correctly then this should work:
(?:\$this->)?\$[^,\s-]*(?=[,\s])
If you meant to match something else, please let me know.
Our standards have changed and I want to do a 'find and replace' in say Dreamweaver(it allows for RegEx or we just got Visual Studio 2010, if it allows for searching by RegEx) for all the underscores and camelCase them.
What would be the RegEx to do that?
RegEx baffles me. I definitely need to do some studying.
Thanks in advance!
Update: A little more info - I'm searching within my html,aspx,cfm or css documents for any string that contains an underscore and replacing it with the following letter capitalized.
I had this problem, but I need to also handle converting fields like gap_in_cover_period_d_last_5_yr into gapInCoverPeriodDLast and found 9 out of 10 other sed expressions, don't like 1 letter words or numbers.
So to answer the question, use sed. sed -s is the equivalent to using the :s command in vim. So the example below is a command (ie sed -s/.../gc
This seemed to work, although I did have to run it twice (word_a_word will become wordA_word on the first pass and wordAWord on the second. sed backward commands, are just too magical for my muggle blood):-
s/\([A-Za-z0-9]\+\)_\([0-9a-z]\)/\1\U\2/gc
I recently had to approach a similar situation you asked about. Here is a regex I've been using in VIM which does the job for me:
%s/_\([a-zA-Z]\)/\u\1/g
As an example:
this_is_a_test becomes thisIsATest
I don't think there is a good way to do this purely with regex. Searching for _ characters is easy, something like ._. should work to find an _ with something on either side, but you need a more powerful scripting system to change the case of the character following the _. I suggest perl :)
I have a solution in PHP
preg_replace("/(_)(.)/e", "strtoupper('\\2')", $str)
There may be a more elegant selector criteria but I wanted to keep it simple.
I tried to make regex syntax for that but I failed.
I have 2 variables
PlayerInfo[playerid][pLevel]
and
Character[playerid]
and I want to catch only the second variable,I mean only the world what don't contain PlayerInfo, but cointains [playerid]
"(\S+)\[playerid\]" cath both words and (\S+[^PlayerInfo])\[playerid\] jump on some variables- they contais p,l,a,y ...
I need to replace in notepad++,all variables like Text[playerid] to ExClass [playerid][Text]
Couple Pluasible solutions.
List item
Notepad has a plugin called python script. Running regex from there
gives full regex functionality, the python version anyway, and a lot
of powerful potential beyond that. And I use the online python regex tester to help out.
RegRexReplace plugin helps create regex plugins in Notepad++, so when you do hit a limitation, you find out a lot quicker.
Or of course default to your alternate editor (I'm assuming you have
one?) or this online regex tool is absolutely amazing. You
can perform the action on the text online as well.
(I'd try to build a regex for you, but I'm a bit lost as to what you're looking for. Unless the Ivo Abeloos got it. If you're still coming up short, maybe a code example along with values displayed?)
Good luck!
It seems that Notepad++ support negative lookbehind since v6.
In notepad++ you could try to replace (.+)\[(.+)\] with ExClass\[\2\]\[\1\]
Try to use negative lookbehind.
(?<!PlayerInfo)\[playerid\]
EDIT: unfortunately notepad++ does not support negative lookbehind.
I tried to make a workaround based on the following naive idea:
(.[^o]|[^f]o)[playerid]
But this expression does not work either. Notepad++ seems to fail in alternative operator. Thus the answer is: it is impossible to do exactly what you want. Try to solve the problem in other way or use alternative tool.
I'm kind of new to programming, so forgive me if this is terribly obvious (which would be welcome news).
I do a fair amount of PHP development in my free time using pregmatch and writing most of my expressions using the free (open source?) Regex Tester.
However frequently I find myself wanting to simply quickly extract something and the only way I know to do it is to write my expression and then script it, which is probably laughable, but welcome to my reality. :-)
What I'd like is something like a simple text editor that I can feed my expression to (given a file or a buffer full of pasted text) and have it parse the expression and return a document with only the results.
What I find is usually regex search/replace functions, as in Notepad++ I can easily find (and replace) all instances using an expression, but I simply don't know how to only extract it...
And it's probably terribly obvious, can expression match only the inverse? Then I could use something like (just the expression I'm currently working on):
([^<]*)
And replace everything that doesn't match with nothing. But I'm sure this is something common and simple, I'd really appreciate any poniters.
FWIW I know grep and I could do it using that, but I'm hoping their are better gui'ified solution I'm simply ignorant of.
Thanks.
Zach
What I was hoping for would be something that worked in a more standard set of gui tools (ie, the tools I might already be using). I appreciate all the responses, but using perl or vi or grep is what I was hoping to avoid, otherwise I would have just scripted it myself (of course I did) since their all relatively powerful, low-level tools.
Maybe I wasn't clear enough. As a senior systems administrator the cli tools are familiar to me, I'm quite fond of them. Working at home however I find most of my time is spent in a gui, like Netbeans or Notepad++. I just figure there would be a simple way to achieve the regex based data extraction using those tools (since in these cases I'd already be using them).
Something vaguely like what I was referring to would be this which will take aa expression on the first line and a url on the second line and then extract (return) the data.
It's ugly (I'll take it down after tonight since it's probably riddled with problems).
Anyway, thanks for your responses. I appreciate it.
If you want a text editor with good regex support, I highly recommend Vim. Vim's regex engine is quite powerful and is well-integrated into the editor. e.g.
:g!/regex/d
This says to delete every line in your buffer which doesn't match pattern regex.
:g/regex/s/another_regex/replacement/g
This says on every line that matches regex, do another search/replace to replace text matching another_regex with replacement.
If you want to use commandline grep or a Perl/Ruby/Python/PHP one-liner any other tool, you can filter the current buffer's text through that tool and update the buffer to reflect the results:
:%!grep regex
:%!perl -nle 'print if /regex/'
Have you tried nregex.com ?
http://www.nregex.com/nregex/default.aspx
There's a plugin for Netbeans here, but development looks stalled:
http://wiki.netbeans.org/Regex
http://wiki.netbeans.org/RegularExpressionsModuleProposal
You might also try The Regulator:
http://sourceforge.net/projects/regulator/
Most regex engines will allow you to match the opposite of the regex.
Usually with the ! operator.
I know grep has been mentioned, and you don't want a cli tool, but I think ack deserves to be mentioned.
ack is a tool like grep, aimed at
programmers with large trees of
heterogeneous source code.
ack is written purely in Perl, and
takes advantage of the power of Perl's
regular expressions.
A good text editor can be used to perform the actions you are describing. I use EditPadPro for search and replace functionality and it has some other nice feaures including code coloring for most major formats. The search panel functionality includes a regular expression mode that allows you to input a regex then search for the first instance which identifies if your expression matches the appropriate information then gives you the option to replace either iteratively or all instances.
http://www.editpadpro.com
My suggestion is grep, and cygwin if you're stuck on a Windows box.
echo "text" | grep ([^<]*)
OR
cat filename | grep ([^<]*)
What I'd like is something like a
simple text editor that I can feed my
expression to (given a file or a
buffer full of pasted text) and have
it parse the expression and return a
document with only the results.
You have just described grep. This is exactly what grep does. What's wrong with it?