go-evalostic

go-evalostic can be used to evaluate logical string conditions with Golang.

Usage

The usage of go-evalotic is very simple. Just define a list of conditions and pass it to the constructor. You will then have access to a matcher that can apply all conditions to a specific string and returns the indices of all matching conditions.

Condition Syntax

All strings in a condition have to be quoted (they will be unquoted with strconv.Unquote()). Multiple strings can be concatenated with the keywords AND, OR and parentheses ( ). Strings or subconditions can be negated with NOT. Per default, strings are case sensitive. To make a string case insensitive, add a i after quotes.

Example (Case Sensitive): "foo" AND NOT ("bar" OR "baz")

Example (Case Insensitive): "foo"i AND NOT ("bar"i OR "baz"i)

Code Example

e, err := evalostic.New([]string{
    `"foo" OR "bar"`,
    `NOT "foo" AND ("bar" OR "baz")`,
    // add more conditions here
})
if err != nil {
    panic(err)
}
e.Match("foo") // returns [0]
e.Match("bar") // returns [0, 1]
e.Match("foobar") // returns [0]
e.Match("baz") // returns [1]
e.Match("qux") // returns nil