Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Character class intersection
    [\w&&[^\d]]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
Processing...

Test String

Code Generator

Generated Code

import Foundation let pattern = #"--\[\[\s([^]*?)\s--\]\]\s(.+)\s"# let regex = try! NSRegularExpression(pattern: pattern) let testString = ##""" --[[ * Handles talking to a NPC. Takes care of all waiting times and checks if NPCs * channel is open. By default, it uses a waiting method that waits until it * sees the the message was actually sent. Optionally, you can opt for the * original waitping() solution, passing `normalWait` as true. * * @since 0.1.0 * @updated 1.4.0 * * @param {string...} messages - Messages to be said * @param {boolean} [normalWait] - If waitping should be used as * waiting method; defaults to false * * @returns {boolean} - A value indicating whether all * messages were correctly said --]] function npctalk(...) local args = {...} -- Checks for NPCs around -- Blatantly (almost) copied from @Colandus' lib local npcFound = false foreach creature c 'nfs' do if c.dist <= 3 then npcFound = true break end end if not npcFound then return false end -- Checks for aditional parameters local normalWait = false if type(table.last(args)) == 'boolean' then normalWait = table.remove(args) end -- Use specified waiting method local waitFunction = waitmessage if normalWait then waitFunction = function() waitping() return true end end -- We gotta convert all args to strings because there may be some numbers -- in between and those wouldn't be correctly said by the bot. table.map(args, tostring) local msgSuccess = false -- Open NPCs channel if needed if not ischannel('NPCs') then while not msgSuccess do say(args[1]) msgSuccess = waitFunction($name, args[1], 3000, true, MSG_DEFAULT) end table.remove(args, 1) wait(400, 600) end for k, v in ipairs(args) do msgSuccess = false while not msgSuccess do -- When we have fast hotkeys enabled, the bot sends the messages way -- too fast and this ends up causing a huge problem because the -- server can't properly read them. So we simulate the time it would -- take to actually type the text. if $fasthotkeys then local minWait, maxWait = get('Settings/TypeWaitTime'):match(REGEX_RANGE) minWait, maxWait = tonumber(minWait), tonumber(maxWait) -- Even though values can go as low as 10 x 10 ms, there's a -- physical cap at about 30 x 30 ms. minWait, maxWait = math.max(minWait, 30), math.max(maxWait, 30) local waitTime = 0 for i = 1, #v do waitTime = waitTime + math.random(minWait, maxWait) end -- My measurements indicate at least 15% extra time to actually -- press the keys then it should take, even with relatively -- high settings. However, the measurements go relatively high -- when using extremely short strings. So I made up this weird -- formula with the help of Wolfram Alpha. waitTime = waitTime * (1 + (3 * (1.15 / #v)^1.15)) wait(waitTime) end say('NPCs', v) msgSuccess = waitFunction($name, v, 3000, true, MSG_SENT) if not msgSuccess then if not ischannel('NPCs') then return npctalk(select(k, ...)) end end end end return true end --[[ * Handles pressing specific keys in the given sentence. It reads the `keys` * argument and presses the keys as if a human was writing it. For special * keys, make use of brackets. For instance, to press delete, use [DELETE]. * * @since 0.1.0 * * @param {string} keys - Keys to be pressed --]] function press(keys) keys = keys:upper() for i, j, k in string.gmatch(keys .. '[]', '([^%[]-)%[(.-)%]([^%[]-)') do for n = 1, #i do keyevent(KEYS[i:at(n)]) end if #j then keyevent(KEYS[j]) end for n = 1, #k do keyevent(KEYS[k:at(n)]) end end end --[[ * Closes the battle list. * * NOTE: This is pretty much an alias to openbattlelist(true), because I found * that boolean parameter to be pretty stupid. * * @since 1.5.0 --]] function closebattlelist() openbattlelist(true) end --[[ * Sends a private message to a given player. * * @since 1.6.0 * * @param {string} name - Name of the player to send the * message to * @param {string} message - Message content --]] function pm(name, message) say(('*%s* %s'):format(name, message)) end --[[ * Yells message on a given channel. * * @since 1.6.0 * * @param {string} [channel] - Channel to yell the message on message to * @param {string} message - Message content --]] function yell(channel, message) if not message then message, channel = channel, 'Default' end say(channel, ('#y %s'):format(message)) end --[[ * Whispers message on a given channel. * * @since 1.6.0 * * @param {string} [channel] - Channel to whisper the message on message to * @param {string} message - Message content --]] function whisper(channel, message) if not message then message, channel = channel, 'Default' end say(channel, ('#w %s'):format(message)) end """## let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression