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package protocol
import (
"strings"
)
const (
escapes = "\t\n\f\r ,="
nameEscapes = "\t\n\f\r ,"
stringFieldEscapes = "\t\n\f\r\\\""
)
var (
escaper = strings.NewReplacer(
"\t", `\t`,
"\n", `\n`,
"\f", `\f`,
"\r", `\r`,
`,`, `\,`,
` `, `\ `,
`=`, `\=`,
)
nameEscaper = strings.NewReplacer(
"\t", `\t`,
"\n", `\n`,
"\f", `\f`,
"\r", `\r`,
`,`, `\,`,
` `, `\ `,
)
stringFieldEscaper = strings.NewReplacer(
"\t", `\t`,
"\n", `\n`,
"\f", `\f`,
"\r", `\r`,
`"`, `\"`,
`\`, `\\`,
)
)
// The various escape functions allocate, I'd like to fix that.
// TODO: make escape not allocate
// Escape a tagkey, tagvalue, or fieldkey
func escape(s string) string {
if strings.ContainsAny(s, escapes) {
return escaper.Replace(s)
}
return s
}
// Escape a measurement name
func nameEscape(s string) string {
if strings.ContainsAny(s, nameEscapes) {
return nameEscaper.Replace(s)
}
return s
}
// Escape a string field
func stringFieldEscape(s string) string {
if strings.ContainsAny(s, stringFieldEscapes) {
return stringFieldEscaper.Replace(s)
}
return s
}
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