Re: Split on whitespace except for between quotes

[Neil_H]

Regex

(w*b)*?|(?<=").*(?=")$ 

Re: Split on whitespace except for between quotes

[squattingmonk]

Thanks! I came up with the following:


import parseutils, strutils

proc splitArgs(args: string): seq[string] =
  var
parsed, tmp: string
i, quotes: int
  
  while i < args.len:
i += args.parseUntil(parsed, Whitespace, i) + 1
tmp.add(parsed)
if parsed.startsWith('"'):
  quotes.inc
if parsed.endsWith('"'):
  quotes.dec
elif quotes > 0:
  tmp.add(" ")

if quotes == 0:
  tmp.removePrefix('"')
  tmp.removeSuffix('"')
  result.add(tmp)
  tmp = ""
  
  if tmp.len > 0:
result.add(tmp[1 .. ^2])

let text = "spam eggs \"spam and eggs\""
doAssert text.splitArgs == @["spam", "eggs", "spam and eggs"]


Run

I chose not to cover single quotes because I don't want to have to handle words 
like "don't". Advice on how I could improve on this?

Re: Split on whitespace except for between quotes

[squattingmonk]

This text wouldn't be passed into the command line (it's read from a file), but 
it will be passed to it. Your suggestion turned me on to `parseCmdLine()` from 
the os module. It does exactly what I need. Thank you!

Re: Split on whitespace except for between quotes

[kaushalmodi]

Assuming that that input is from the command line, you can use the inbuilt 
commandLineParams() instead of manually parsing it (example in my notes: 
[https://scripter.co/notes/nim/#command-line-parameters)](https://scripter.co/notes/nim/#command-line-parameters\)).

Though, I use the **cligen** package from Nimble for my CLI parsing needs in 
general for much more CLI arg and switch parsing and auto doc support. 

Re: Split on whitespace except for between quotes

[r3c]

Try this


import strutils
var str = "spam eggs \"spam and eggs\" asd zxc"

var spl = str.split("\"")


for s in 0..spl.high:
  if spl[s].startsWith(" ") or spl[s].endsWith(" "):
spl[s] = spl[s].strip

echo spl


Run

Re: Split on whitespace except for between quotes

[SolitudeSF]

i made library that does maybe a bit more than you need, but it can handle this 
case [https://github.com/SolitudeSF/shlex](https://github.com/SolitudeSF/shlex)

Re: Split on whitespace except for between quotes

[mratsim]

iterate on the string, keep a counter on your quote nesting level, only split 
if that counter is zero.

Split on whitespace except for between quotes

[squattingmonk]

I want to split a string on whitespace, but keep strings that are between 
quotes:


input: spam eggs "spam and eggs"
output: @["spam", "eggs", "spam and eggs"]

I want to support both single and double quotes, and I'm having trouble 
wrapping my brain around how to do this. I've been thinking maybe splitting 
with a regular expression is the way to go, but I wondered if there is a 
simpler way (perhaps already in the standard library that I've missed).