Summarizes text

summarize.go

import (
        "strings"

        "github.com/JesusIslam/tldr"
)

func Summarize(text string) (string, float64, error) {
        sum := tldr.New()
        tmp, err := sum.Summarize(text, 6)
        if err != nil {
                return "", 0, err
        }

        var out string
        for _, l := range strings.Split(tmp, "\n") {
                l = strings.TrimSpace(l)
                if l == "" {
                        // Ignore empty lines
                        continue
                }

                c := strings.Count(l, " ")
                if c < 2 {
                        // Ignore lines with too few words (or in this case,
                        // spaces between words)
                        continue
                }

                out += l + "\n\n"
        }

        tLen, oLen := float64(len(text)), float64(len(out))
        diff := oLen / tLen

        return strings.TrimSpace(out) + "\n", diff, nil
}