python - Regex for CSV split including multiple double quotes -


i have csv column data containing text. each row separated double quotes "

sample text in row similar (notice: new lines , spaces before each line are intended)

"lorem ipsum dolor sit amet,   consectetur adipisicing elit, sed eiusmod  tempor incididunt ut labore et dolore magna   aliqua. ut ""enim ad"" minim veniam,  quis nostrud exercitation ullamco laboris nisi   ut aliquip ex ea commodo  consequat. duis aute irure dolor in reprehenderit in voluptate velit esse  cillum dolore eu fugiat ""nulla pariatu""" "ex ea commodo  consequat. duis aute irure ""dolor in"" reprehenderit   in voluptate velit esse  cillum dolore eu fugiat nulla pariatur.   excepteur sint occaecat cupidatat non  proident, sunt in culpa qui officia deserunt   mollit anim id est laborum."

the above represent 2 subsequent rows.

i want select separated groups text contained between every first double quote " (starting line) , every last double quote "

as can see tho, there line break in text, along subsequent escaped double quotes "" wich part of text need select.

i came this

(?s)(?!")[^\s](.+?)(?=")

but multiple double quotes breaking desired match

i'm real novice regex, think maybe i'm missing basic. dunno if relevant i'm using sublime text 3 should python think.

what can achieve need?

you can use following regex:

"[^"]*(?:""[^"]*)*"

see demo

this regex match either non-quote, or 2 consequent double quotes inside double quotation marks.

how work? let me share graphics debuggex.com:

enter image description here

with regex, match:

  • " - (1) - literal quote
  • [^"]* - (2, 3) - 0 or more characters other quote (yes, including newline, negated character class), if there none, regex searches final literal quote (6)
  • (?:""[^"]*)* - (4,5) - 0 or more sequences of:
    • "" - (4) - double double quotation marks
    • [^"]* - (5) - 0 or more characters other quote
  • " - (6) - final literal quote.

this works faster "(?:[^"]|"")*" (although yielding same results), because processing former linear, involving less backtracking.


-

Comments

Post a Comment

Popular posts from this blog

c# - Binding a comma separated list to a List<int> in asp.net web api -

the default binder in web api expecst http://url.com/webapi/report/?pageids=3243&pageids=2365 to bind public ihttpactionresult report(list<int> pageids){ // exciting webapi code} i wish bind http://url.com/webapi/report/?pageids=3243,2365 as running out of space in url get . i have created class public class commaseparatedmodelbinder : system.web.http.modelbinding.imodelbinder { public bool bindmodel(httpactioncontext actioncontext, modelbindingcontext bindingcontext) { //binding in here } } and registered in webapiconfig.cs var provider = new simplemodelbinderprovider( typeof(list<int>), new commaseparatedmodelbinder()); config.services.insert(typeof(modelbinderprovider), 0, provider); i have altered method signature use model binder so public ihttpactionresult report( [modelbinder] list<int> pageids){ // exciting webapi code} however break point in binder not being
Read more

Delphi 7 and decode UTF-8 base64 -

in delphi 7, have widestring encoded base64(that received web service widestring result) : pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg== when decoded it, result not utf-8: <?xml version="1.0"?> <string>طھط³طھ</string> but when decoded base64decode.org, result true : <?xml version="1.0"?> <string>تست</string> i have use encddecd unit decodestring function. the problem have using decodestring . function, in delphi 7, treats decoded binary data being ansi encoded. , problem text utf-8 encoded. to continue encddecd unit have couple of options. can switch decodestream . instance, code produce utf-8 encoded text file data: {$apptype console} uses classes, encddecd; const data = 'pd94bwwgdmvyc2lvbj0ims4wij8+dqo8c3ryaw5nptiq2lpyqjwvc3ryaw5npg=='; var input: tstringstream; output: tfilestream; begin input := tstringstream.create(data); try output := tfilestream.
Read more

html - Is there any way to exclude a single element from the style? (Bootstrap) -

so, have img logo, overlaid on div styled background-image: url("...") , , both elements inside 2 div classes .to-color , .to-overlay respectively, black transparent overlay. is there way exclude logo style given these 2 classes? here's jsfiddle example: link html , css example: - html - <div class="to-color"> <div class="to-overlay"> <div class="respo"> <div class="row"> <div class="col-xs-4 col-xs-offset-4 text-center"> <img src="http://ansonalex.com/wp-content/uploads/2011/06/google-logo-768x260.png" alt="..." class="img-responsive"> </div> </div> </div> </div> </div> - css - .to-color { background-color: #000; } .to-overlay { opacity : 0.5; } .respo { background-image: url("https://source.unsplash.com/category/objects/1600x900"); background-position: center center;
Read more