crstrings

func FilterEmpty ¶

func FilterEmpty(elems []string) []string

FilterEmpty removes empty strings from the given slice.

func If ¶

func If(flag bool, trueValue string) string

If returns the given value if the flag is true, otherwise an empty string.

func IfElse ¶

func IfElse(flag bool, trueValue, falseValue string) string

IfElse returns the value that matches the value of the flag.

func Indent ¶

func Indent(prepend, str string) string

Indent prepends a string to every line of the given string.

If the string ends in a newline, the resulting string also ends in a newline.

func JoinStringers ¶

func JoinStringers[T fmt.Stringer](delim string, args ...T) string

JoinStringers concatenates the string representations of the given fmt.Stringer implementations.

func Lines ¶

func Lines(s string) []string

Lines breaks up the given string into lines.

func LinesSeq ¶

func LinesSeq(s string) iter.Seq[string]

LinesSeq returns an iterator over the lines of the given string.

func MapAndJoin ¶

func MapAndJoin[T any](fn func(T) string, delim string, args ...T) string

MapAndJoin converts each argument to a string using the given function and joins the strings with the given delimiter.

func UnwrapText ¶

func UnwrapText(input string) string

UnwrapText reformats wrapped lines by replacing single newlines with spaces, while preserving blank-line paragraph breaks. This allows defining long strings in a readable fashion.

More specifically:

• the input string is broken up into lines;
• each line is trimmed of leading and trailing whitespace;
• leading or trailing empty lines are discarded;
• each run of non-empty lines is joined into a single line, with a space separator;
• resulting single lines are joined with a blank line in-between.

For example: UnwrapText(`

This is a paragraph that
is wrapped on multiple lines.

This is another paragraph.

`) returns "This is a paragraph that is wrapped on multiple lines.\n\nThis is another paragraph."

func WithSep ¶

func WithSep(a string, separator string, b string) string

WithSep prints the strings a and b with the given separator in-between, unless one of the strings is empty (in which case the other string is returned).