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]
  • 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
No Match

r"
"
gm

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

re = /(?P<macroName>\[\w+\s)(?#匹配宏名称)|(?P<paramName>\w+(?=\=))(?#匹配参数名称)|(?P<intValue>(?<=\=)\d+)(?#匹配int参数)|(?P<intArrayValue2>(?<=\=)\[\d+,\d+\])(?#匹配长度为2的int数组)|(?P<intArrayValue4>(?<=\=)\[\d+,\d+,\d+,\d+])(?#匹配长度为4的int数组)|(?P<stringValue1>\"[a-zA-Z\._0-9\s]+\")(?#匹配使用双引号的string参数)|(?P<stringValue2>\'[a-zA-Z\._0-9\s]+\')(?#匹配使用单引号的string参数)|(?P<var>(?<=\=)\w+)(?#匹配变量型参数)/m str = '//完整代码匹配测试 [sprite file="1.png" index=2 rect=[20,20,800,600] pos=[800,600]][sprite file=\'2.png\' index=2 rect=[0,0,0,0]] //这是注释 abcd [sprite file=\'2.png\' index=2 target=basic_layer] //遇到这种情况，利用python取出组的名称，判断字符串格式 endwith [sprite pos=[x,y]] [sprite pos=[3,4]]' subst = '' result = str.gsub(re, subst) # Print the result of the substitution puts 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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html