func doCheckHugoFrontmatter(reader *linereader.LineReader, file string) (err error) {
foundComment := false
for err == nil {
byteBuff, _, err := reader.ReadLine()
if err != nil {
return err
}
buff := string(byteBuff)
if buff == "+++" {
data.VerboseLog("Found TOML start")
break
}
if strings.HasPrefix(buff, "<!--") {
if !strings.HasSuffix(buff, "-->") {
data.VerboseLog("found comment start")
foundComment = true
continue
}
}
//data.VerboseLog("ReadLine: %s, %v, %s\n", string(byteBuff), isPrefix, err)
for i := 0; i < len(buff); {
runeValue, width := utf8.DecodeRuneInString(buff[i:])
if unicode.IsSpace(runeValue) {
i += width
} else {
data.VerboseLog("Unexpected non-whitespace char: %s", buff)
return fmt.Errorf("Unexpected non-whitespace char: %s", buff)
}
}
}
data.AllFiles[file].Meta = make(map[string]string)
// read lines until `+++` ending
for err == nil {
byteBuff, _, err := reader.ReadLine()
if err != nil {
return err
}
buff := string(byteBuff)
if buff == "+++" {
data.VerboseLog("Found TOML end")
break
}
data.VerboseLog("\t%s\n", buff)
meta := strings.SplitN(buff, "=", 2)
data.VerboseLog("\t%d\t%v\n", len(meta), meta)
if len(meta) == 2 {
data.VerboseLog("\t\t%s: %s\n", meta[0], meta[1])
data.AllFiles[file].Meta[strings.Trim(meta[0], " ")] = strings.Trim(meta[1], " ")
}
}
// remove trailing close comment
if foundComment {
byteBuff, _, err := reader.ReadLine()
if err != nil {
return err
}
buff := string(byteBuff)
data.VerboseLog("is this a comment? (%s)\n", buff)
if strings.HasSuffix(buff, "-->") {
if !strings.HasPrefix(buff, "<!--") {
data.VerboseLog("found comment end\n")
foundComment = false
}
}
if foundComment {
reader.UnreadLine(buff)
return fmt.Errorf("Did not find expected close metadata comment")
}
}
// ensure that the minimum metadata keys are set
// ignore draft files
if draft, ok := data.AllFiles[file].Meta["draft"]; !ok || draft != "true" {
if _, ok := data.AllFiles[file].Meta["title"]; !ok {
return fmt.Errorf("Did not find `title` metadata element")
}
if _, ok := data.AllFiles[file].Meta["description"]; !ok {
return fmt.Errorf("Did not find `description` metadata element")
}
if _, ok := data.AllFiles[file].Meta["keywords"]; !ok {
return fmt.Errorf("Did not find `keywords` metadata element")
}
}
return nil
}
