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package blorg
import (
"reflect"
"regexp"
"strings"
"github.com/alecthomas/chroma/v2"
"github.com/alecthomas/chroma/v2/formatters/html"
"github.com/alecthomas/chroma/v2/lexers"
"github.com/alecthomas/chroma/v2/styles"
"github.com/niklasfasching/go-org/org"
)
var snakeCaseRegexp = regexp.MustCompile(`(^[A-Za-z])|_([A-Za-z])`)
var whitespaceRegexp = regexp.MustCompile(`\s+`)
var nonWordCharRegexp = regexp.MustCompile(`[^\w-]`)
func toMap(bufferSettings map[string]string, x interface{}) map[string]interface{} {
m := map[string]interface{}{}
for k, v := range bufferSettings {
k = toCamelCase(k)
if strings.HasSuffix(k, "[]") {
m[k[:len(k)-2]] = strings.Fields(v)
} else {
m[k] = v
}
}
if x == nil {
return m
}
v := reflect.ValueOf(x).Elem()
for i := 0; i < v.NumField(); i++ {
m[v.Type().Field(i).Name] = v.Field(i).Interface()
}
return m
}
func toCamelCase(s string) string {
return snakeCaseRegexp.ReplaceAllStringFunc(strings.ToLower(s), func(s string) string {
return strings.ToUpper(strings.Replace(s, "_", "", -1))
})
}
func slugify(s string) string {
s = strings.ToLower(s)
s = whitespaceRegexp.ReplaceAllString(s, "-")
s = nonWordCharRegexp.ReplaceAllString(s, "")
return strings.Trim(s, "-")
}
func getWriter() org.Writer {
w := org.NewHTMLWriter()
w.HighlightCodeBlock = highlightCodeBlock
return w
}
func highlightCodeBlock(source, lang string, inline bool, params map[string]string) string {
var w strings.Builder
l := lexers.Get(lang)
if l == nil {
l = lexers.Fallback
}
l = chroma.Coalesce(l)
it, _ := l.Tokenise(nil, source)
options := []html.Option{}
if params[":hl_lines"] != "" {
ranges := org.ParseRanges(params[":hl_lines"])
if ranges != nil {
options = append(options, html.HighlightLines(ranges))
}
}
_ = html.New(options...).Format(&w, styles.Get("github"), it)
if inline {
return `<div class="highlight-inline">` + "\n" + w.String() + "\n" + `</div>`
}
return `<div class="highlight">` + "\n" + w.String() + "\n" + `</div>`
}
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