swearjar.go

package swearjar

import (
	"encoding/json"
	"io/ioutil"
	"path/filepath"
	"regexp"
)

// Swears type alias to map[string][]string
type Swears map[string][]string

var defaultSwearsJson = `{"anus":["sexual"],"arse":["insult"],"arsehole":["insult"],"ass":["sexual","insult"],"ass-hat":["insult"],"ass-pirate":["discriminatory"],"assbag":["insult"],"assbandit":["discriminatory"],"assbanger":["discriminatory"],"assbite":["insult"],"assclown":["sexual"],"asscock":["insult"],"asscracker":["sexual"],"assface":["sexual"],"assfuck":["sexual"],"assfucker":["discriminatory"],"assgoblin":["discriminatory"],"asshat":["sexual"],"asshead":["insult"],"asshole":["insult"],"asshopper":["discriminatory"],"assjacker":["discriminatory"],"asslick":["insult"],"asslicker":["insult"],"assmonkey":["insult"],"assmunch":["insult"],"assmuncher":["sexual"],"assnigger":["discriminatory"],"asspirate":["discriminatory"],"assshit":["insult"],"assshole":["sexual"],"asssucker":["insult"],"asswad":["sexual"],"asswipe":["sexual"],"bampot":["insult"],"bastard":["insult"],"beaner":["discriminatory"],"beastial":["sexual"],"beastiality":["sexual"],"beastility":["sexual"],"bestial":["sexual"],"bestiality":["sexual"],"bitch":["insult"],"bitchass":["insult"],"bitcher":["insult"],"bitchin":["inappropriate"],"bitching":["inappropriate"],"bitchtit":["discriminatory"],"bitchy":["insult"],"blow 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// Load a default set of swears and returns a Swears instance
// or can load a JSON file which will unmarshal to Swears (map[string[]string)
func Load(config ...string) (swears Swears, err error) {
	// Make a local copy
	defaultSwearsJson := defaultSwearsJson

	if config != nil && config[0] != "" {
		absPath, err := filepath.Abs(config[0])
		if err != nil {
			return nil, err
		}

		swearsJson, err := ioutil.ReadFile(absPath)
		if err != nil {
			return nil, err
		}

		defaultSwearsJson = string(swearsJson)
	}

	err = json.Unmarshal([]byte(defaultSwearsJson), &swears)
	if err != nil {
		return nil, err
	}

	return
}

// Profane takes an input word against the swears list and returns bool at an occurrence.
// This calls Scorecard but discards the reason
func (swears Swears) Profane(input string) (bool, error) {
	profane, _, err := swears.Scorecard(input)
	return profane, err
}

// Scorecard checks input against swear list and returns bool, slice of reasons + error.
// This will return at first occurrence
func (swears Swears) Scorecard(input string) (profane bool, reasons []string, err error) {
	for word, reason := range swears {
		wordPattern := `\b` + word + `\b`
		match, err := regexp.MatchString(wordPattern, input)

		if err != nil {
			return false, nil, err
		}

		if match {
			return true, reason, nil
		}
	}

	return false, nil, nil
}