Regexp
The Regexp registry includes functions for pattern matching and string manipulation using regular expressions, providing powerful text processing capabilities.
regexFind / mustRegexFind
The function returns the first match found in the string that corresponds to the specified regular expression pattern.
Signature
RegexFind(regex string, s string) string
MustRegexFind(regex string, s string) (string, error)
Must version
✅
{{ regexFind "a(b+)" "aaabbb" }} // Output: "abbb"
regexFindAll / mustRegexFindAll
The function returns all matches of the regex pattern in the string, up to a specified maximum number of matches (n
).
Signature
RegexFindAll(regex string, s string, n int) []string
MustRegexFindAll(regex string, s string, n int) ([]string, error)
Must version
✅
{{ regexFindAll "a(b+)" "ababab" 2 }} // Output: ["ab", "ab"]
regexMatch / mustRegexMatch
The function checks if the entire string matches the given regular expression pattern.
Signature
RegexMatch(regex string, s string) bool
MustRegexMatch(regex string, s string) (bool, error)
Must version
✅
{{ regexMatch "^[a-zA-Z]+$" "Hello" }} // Output: true
regexSplit / mustRegexSplit
The function splits the string into substrings based on matches of the regex pattern, performing the split up to n
times.
Signature
RegexSplit(regex string, s string, n int) []string
MustRegexSplit(regex string, s string, n int) ([]string, error)
Must version
✅
{{regexSplit "\\s+" "hello world" -1 }} // Output: ["hello", "world"]
regexReplaceAll / mustRegexReplaceAll
The function replaces all occurrences of the regex pattern in the string with the specified replacement string.
Signature
RegexReplaceAll(regex string, s string, repl string) string
MustRegexReplaceAll(regex string, s string, repl string) (string, error)
Must version
✅
{{ regexReplaceAll "[aeiou]" "hello" "i" }} // Output: "hillo"
regexReplaceAllLiteral / mustRegexReplaceAllLiteral
The function replaces all occurrences of the regex pattern in the string with the specified literal replacement string, without interpreting any special characters in the replacement.
Signature
RegexReplaceAllLiteral(regex string, s string, repl string) string
MustRegexReplaceAllLiteral(regex string, s string, repl string) (string, error)
Must version
✅
{{ regexReplaceAllLiteral "[aeiou]" "hello" "$&" }} // Output: "h$&ll$&"
regexQuoteMeta
The function returns a version of the provided string that can be used as a literal pattern in a regular expression, escaping any special characters.
Signature
RegexQuoteMeta(str string) string
Must version
❌
{{ regexQuoteMeta ".+*?^$()[]{}|" }} // Output: "\.\+\*\?\^\$\(\)\[\]\{\}\|"
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