90 lines
1.7 KiB
Go
90 lines
1.7 KiB
Go
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package conf
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// FieldValue is a field=value pair in the configuration.
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type FieldValue struct {
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Field string
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Value string
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}
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const (
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currentName = iota
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currentValue
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currentComment
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)
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// Parse converts some bytes into various FieldValue pairs.
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func Parse(data []byte) []FieldValue {
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fvs := []FieldValue{}
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var (
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fieldName string
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fieldValue string
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nextNormal bool
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current byte
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)
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for _, c := range data {
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if current == currentComment && c != '\n' {
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continue
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}
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if nextNormal {
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switch current {
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case currentName:
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fieldName += string(c)
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case currentValue:
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fieldValue += string(c)
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}
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nextNormal = false
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continue
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}
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switch c {
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case '=':
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switch current {
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// if we are still at the name, let's switch to a value.
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case currentName:
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current = currentValue
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// if we are already at the value, treat the = character like any other sign
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case currentValue:
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fieldValue += string(c)
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}
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case ';':
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current = currentComment
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case '\n':
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if fieldName != "" && fieldValue != "" {
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fvs = append(fvs, FieldValue{
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Field: fieldName,
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Value: removeTrailingCR(fieldValue),
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})
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}
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fieldName = ""
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fieldValue = ""
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current = currentName
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case '\\':
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nextNormal = true
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default:
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switch current {
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case currentName:
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fieldName += string(c)
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case currentValue:
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fieldValue += string(c)
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}
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nextNormal = false
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}
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}
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if fieldName != "" && fieldValue != "" {
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fvs = append(fvs, FieldValue{
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Field: fieldName,
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Value: removeTrailingCR(fieldValue),
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})
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}
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return fvs
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}
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func removeTrailingCR(s string) string {
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if len(s) == 0 {
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return s
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}
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if s[len(s)-1] == '\r' {
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return s[:len(s)-1]
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}
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return s
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}
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