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package config
import (
"bytes"
"errors"
"fmt"
"io"
"strings"
)
func (p *configParser) parseSection() error {
var name bytes.Buffer
for {
ch, err := p.nextChar()
if errors.Is(err, io.EOF) {
return p.parseError("unexpected EOF in section header")
}
if err != nil {
return err
}
if ch == ']' {
section := name.String()
if !isValidSection(section) {
return p.parseError(fmt.Sprintf("invalid section name: %q", section))
}
p.currentSection = strings.ToLower(section)
p.currentSubsec = ""
return nil
}
if isWhitespace(ch) {
return p.parseExtendedSection(&name)
}
if !isKeyChar(ch) && ch != '.' {
return p.parseError(fmt.Sprintf("invalid character in section name: %q", ch))
}
name.WriteByte(toLower(ch))
}
}
func isValidSection(s string) bool {
if len(s) == 0 {
return false
}
for i := range len(s) {
ch := s[i]
if !isLetter(ch) && !isDigit(ch) && ch != '-' && ch != '.' {
return false
}
}
return true
}
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