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Strings helpers

Strings​

Atof(string) float64​

Parses a string representation of a float number to an actual float number (binding on strconv.ParseFloat)

Atof(evt.Parsed.tcp_port)

Upper(string) string​

Returns the uppercase version of the string

Upper("yop")

Lower(string) string​

Returns the lowercase version of the string

Lower("YOP")

ParseUri(string) map[string][]string​

Parses an URI into a map of string list.

ParseURI("/foo?a=1&b=2") would return :

{
  "a": []string{"1"}, 
  "b": []string{"2"}
}

PathUnescape(string) string​

PathUnescape does the inverse transformation of PathEscape, converting each 3-byte encoded substring of the form "%AB" into the hex-decoded byte 0xAB. It returns an error if any % is not followed by two hexadecimal digits.

PathEscape(string) string​

PathEscape escapes the string so it can be safely placed inside a URL path segment, replacing special characters (including /) with %XX sequences as needed.

QueryUnescape(string) string​

QueryUnescape does the inverse transformation of QueryEscape, converting each 3-byte encoded substring of the form "%AB" into the hex-decoded byte 0xAB. It returns an error if any % is not followed by two hexadecimal digits.

QueryEscape(string) string​

QueryEscape escapes the string so it can be safely placed inside a URL query.

Sprintf(format string, a ...interface{}) string​

Official doc : Sprintf formats according to a format specifier and returns the resulting string.

Sprintf('%dh', 1) returns 1h

Match(pattern string, object string) bool​

Match returns true if the object string matches the pattern. Pattern only supports wildcard :

  • * multi-character wildcard (including zero-length)
  • ? single character wildcard

Match('to?o*', 'totoooooo') returns true

Fields(s string) []string​

Fields splits the string s around each instance of one or more consecutive white space characters, as defined by unicode.IsSpace, returning a slice of substrings of s or an empty slice if s contains only white space.

Index(s string, substr string) int​

Index returns the index of the first instance of substr in s, or -1 if substr is not present in s.

IndexAny(s string, chars string) int​

IndexAny returns the index of the first instance of any Unicode code point from chars in s, or -1 if no Unicode code point from chars is present in s.

Join(elems []string, sep string) string​

Join concatenates the elements of its first argument to create a single string. The separator string sep is placed between elements in the resulting string.

Split(s string, sep string) []string​

Split slices s into all substrings separated by sep and returns a slice of the substrings between those separators.

If s does not contain sep and sep is not empty, Split returns a slice of length 1 whose only element is s.

If sep is empty, Split splits after each UTF-8 sequence. If both s and sep are empty, Split returns an empty slice.

It is equivalent to SplitN with a count of -1.

To split around the first instance of a separator, see Cut.

SplitAfter(s string, sep string) []string​

SplitAfter slices s into all substrings after each instance of sep and returns a slice of those substrings.

If s does not contain sep and sep is not empty, SplitAfter returns a slice of length 1 whose only element is s.

If sep is empty, SplitAfter splits after each UTF-8 sequence. If both s and sep are empty, SplitAfter returns an empty slice.

It is equivalent to SplitAfterN with a count of -1.

SplitAfterN(s string, sep string, n int) []string ​

SplitAfterN slices s into substrings after each instance of sep and returns a slice of those substrings.

The count determines the number of substrings to return:

n > 0: at most n substrings; the last substring will be the unsplit remainder.
n == 0: the result is nil (zero substrings)
n < 0: all substrings

Edge cases for s and sep (for example, empty strings) are handled as described in the documentation for SplitAfter.

SplitN(s string, sep string, n int) []string​

SplitN slices s into substrings separated by sep and returns a slice of the substrings between those separators.

The count determines the number of substrings to return:

n > 0: at most n substrings; the last substring will be the unsplit remainder.
n == 0: the result is nil (zero substrings)
n < 0: all substrings

Edge cases for s and sep (for example, empty strings) are handled as described in the documentation for Split.

To split around the first instance of a separator, see Cut.

Replace(s string, old string, new string, n int) string​

Replace returns a copy of the string s with the first n non-overlapping instances of old replaced by new. If old is empty, it matches at the beginning of the string and after each UTF-8 sequence, yielding up to k+1 replacements for a k-rune string. If n < 0, there is no limit on the number of replacements.

ReplaceAll(s string, old string, new string) string​

ReplaceAll returns a copy of the string s with all non-overlapping instances of old replaced by new. If old is empty, it matches at the beginning of the string and after each UTF-8 sequence, yielding up to k+1 replacements for a k-rune string.

Trim(s string, cutset string) string​

Trim returns a slice of the string s with all leading and trailing Unicode code points contained in cutset removed.

TrimLeft(s string, cutset string) string​

TrimLeft returns a slice of the string s with all leading Unicode code points contained in cutset removed.

To remove a prefix, use TrimPrefix instead.

TrimRight(s string, cutset string) string​

TrimRight returns a slice of the string s, with all trailing Unicode code points contained in cutset removed.

To remove a suffix, use TrimSuffix instead.

TrimSpace(s string) string​

TrimSpace returns a slice of the string s, with all leading and trailing white space removed, as defined by Unicode.

TrimPrefix(s string, prefix string) string​

TrimPrefix returns s without the provided leading prefix string. If s doesn't start with prefix, s is returned unchanged.

TrimSuffix(s string, suffix string) string​

TrimSuffix returns s without the provided trailing suffix string. If s doesn't end with suffix, s is returned unchanged.

ToString(s) string​

Returns the string representation of s, if available (does a s.(sttring)).

LogInfo(format string, ...)​

Performs a logging call with the provided parameters, see logrus reference for formatting info.

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