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package sql3util
import "strings"
// NamedArg splits an named arg into a key and value,
// around an equals sign.
// Spaces are trimmed around both key and value.
func NamedArg(arg string) (key, val string) {
key, val, _ = strings.Cut(arg, "=")
key = strings.TrimSpace(key)
val = strings.TrimSpace(val)
return
}
// Unquote unquotes a string.
//
// https://sqlite.org/lang_keywords.html
func Unquote(val string) string {
if len(val) < 2 {
return val
}
fst := val[0]
lst := val[len(val)-1]
rst := val[1 : len(val)-1]
if fst == '[' && lst == ']' {
return rst
}
if fst != lst {
return val
}
var old, new string
switch fst {
default:
return val
case '`':
old, new = "``", "`"
case '"':
old, new = `""`, `"`
case '\'':
old, new = `''`, `'`
}
return strings.ReplaceAll(rst, old, new)
}
// ParseBool parses a boolean.
//
// https://sqlite.org/pragma.html#syntax
func ParseBool(s string) (b, ok bool) {
if len(s) == 0 {
return false, false
}
if s[0] == '0' {
return false, true
}
if '1' <= s[0] && s[0] <= '9' {
return true, true
}
switch strings.ToLower(s) {
case "true", "yes", "on":
return true, true
case "false", "no", "off":
return false, true
}
return false, false
}
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