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package goorgeous
import (
"bufio"
"bytes"
"regexp"
"strings"
)
// ExtractOrgHeaders finds and returns all of the headers
// from a bufio.Reader and returns them as their own byte slice
func ExtractOrgHeaders(r *bufio.Reader) (fm []byte, err error) {
var out bytes.Buffer
endOfHeaders := true
for endOfHeaders {
p, err := r.Peek(2)
if err != nil {
return nil, err
}
if !charMatches(p[0], '#') && !charMatches(p[1], '+') {
endOfHeaders = false
break
}
line, _, err := r.ReadLine()
if err != nil {
return nil, err
}
out.Write(line)
out.WriteByte('\n')
}
return out.Bytes(), nil
}
var reHeader = regexp.MustCompile(`^#\+(\w+?): (.*)`)
// OrgHeaders find all of the headers from a byte slice and returns
// them as a map of string interface
func OrgHeaders(input []byte) (map[string]interface{}, error) {
out := make(map[string]interface{})
scanner := bufio.NewScanner(bytes.NewReader(input))
for scanner.Scan() {
data := scanner.Bytes()
if !charMatches(data[0], '#') && !charMatches(data[1], '+') {
return out, nil
}
matches := reHeader.FindSubmatch(data)
if len(matches) < 3 {
continue
}
key := string(matches[1])
val := matches[2]
switch {
case strings.ToLower(key) == "tags" || strings.ToLower(key) == "categories" || strings.ToLower(key) == "aliases":
bTags := bytes.Split(val, []byte(" "))
tags := make([]string, len(bTags))
for idx, tag := range bTags {
tags[idx] = string(tag)
}
out[key] = tags
default:
out[key] = string(val)
}
}
return out, nil
}
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