45 lines
901 B
Go
45 lines
901 B
Go
package zerolog
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import "unicode/utf8"
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const hex = "0123456789abcdef"
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func appendJSONString(dst []byte, s string) []byte {
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dst = append(dst, '"')
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for i := 0; i < len(s); {
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if b := s[i]; b < utf8.RuneSelf {
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switch b {
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case '"', '\\':
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dst = append(dst, '\\', b)
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case '\b':
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dst = append(dst, '\\', 'b')
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case '\f':
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dst = append(dst, '\\', 'f')
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case '\n':
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dst = append(dst, '\\', 'n')
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case '\r':
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dst = append(dst, '\\', 'r')
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case '\t':
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dst = append(dst, '\\', 't')
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default:
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if b >= 0x20 {
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dst = append(dst, b)
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} else {
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dst = append(dst, '\\', 'u', '0', '0', hex[b>>4], hex[b&0xF])
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}
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}
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i++
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continue
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}
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r, size := utf8.DecodeRuneInString(s[i:])
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if r == utf8.RuneError && size == 1 {
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dst = append(dst, `\ufffd`...)
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i++
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continue
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}
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dst = append(dst, s[i:i+size]...)
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i += size
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}
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return append(dst, '"')
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}
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