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| 1 | +package jsonlog |
| 2 | + |
| 3 | +import ( |
| 4 | + "bytes" |
| 5 | + "unicode/utf8" |
| 6 | +) |
| 7 | + |
| 8 | +// JSONLogBytes is based on JSONLog. |
| 9 | +// It allows marshalling JSONLog from Log as []byte |
| 10 | +// and an already marshalled Created timestamp. |
| 11 | +type JSONLogBytes struct { |
| 12 | + Log []byte `json:"log,omitempty"` |
| 13 | + Stream string `json:"stream,omitempty"` |
| 14 | + Created string `json:"time"` |
| 15 | +} |
| 16 | + |
| 17 | +// MarshalJSONBuf is based on the same method from JSONLog |
| 18 | +// It has been modified to take into account the necessary changes. |
| 19 | +func (mj *JSONLogBytes) MarshalJSONBuf(buf *bytes.Buffer) error { |
| 20 | + var first = true |
| 21 | + |
| 22 | + buf.WriteString(`{`) |
| 23 | + if len(mj.Log) != 0 { |
| 24 | + if first == true { |
| 25 | + first = false |
| 26 | + } else { |
| 27 | + buf.WriteString(`,`) |
| 28 | + } |
| 29 | + buf.WriteString(`"log":`) |
| 30 | + ffjson_WriteJsonBytesAsString(buf, mj.Log) |
| 31 | + } |
| 32 | + if len(mj.Stream) != 0 { |
| 33 | + if first == true { |
| 34 | + first = false |
| 35 | + } else { |
| 36 | + buf.WriteString(`,`) |
| 37 | + } |
| 38 | + buf.WriteString(`"stream":`) |
| 39 | + ffjson_WriteJsonString(buf, mj.Stream) |
| 40 | + } |
| 41 | + if first == true { |
| 42 | + first = false |
| 43 | + } else { |
| 44 | + buf.WriteString(`,`) |
| 45 | + } |
| 46 | + buf.WriteString(`"time":`) |
| 47 | + buf.WriteString(mj.Created) |
| 48 | + buf.WriteString(`}`) |
| 49 | + return nil |
| 50 | +} |
| 51 | + |
| 52 | +// This is based on ffjson_WriteJsonString. It has been changed |
| 53 | +// to accept a string passed as a slice of bytes. |
| 54 | +func ffjson_WriteJsonBytesAsString(buf *bytes.Buffer, s []byte) { |
| 55 | + const hex = "0123456789abcdef" |
| 56 | + |
| 57 | + buf.WriteByte('"') |
| 58 | + start := 0 |
| 59 | + for i := 0; i < len(s); { |
| 60 | + if b := s[i]; b < utf8.RuneSelf { |
| 61 | + if 0x20 <= b && b != '\\' && b != '"' && b != '<' && b != '>' && b != '&' { |
| 62 | + i++ |
| 63 | + continue |
| 64 | + } |
| 65 | + if start < i { |
| 66 | + buf.Write(s[start:i]) |
| 67 | + } |
| 68 | + switch b { |
| 69 | + case '\\', '"': |
| 70 | + buf.WriteByte('\\') |
| 71 | + buf.WriteByte(b) |
| 72 | + case '\n': |
| 73 | + buf.WriteByte('\\') |
| 74 | + buf.WriteByte('n') |
| 75 | + case '\r': |
| 76 | + buf.WriteByte('\\') |
| 77 | + buf.WriteByte('r') |
| 78 | + default: |
| 79 | + |
| 80 | + buf.WriteString(`\u00`) |
| 81 | + buf.WriteByte(hex[b>>4]) |
| 82 | + buf.WriteByte(hex[b&0xF]) |
| 83 | + } |
| 84 | + i++ |
| 85 | + start = i |
| 86 | + continue |
| 87 | + } |
| 88 | + c, size := utf8.DecodeRune(s[i:]) |
| 89 | + if c == utf8.RuneError && size == 1 { |
| 90 | + if start < i { |
| 91 | + buf.Write(s[start:i]) |
| 92 | + } |
| 93 | + buf.WriteString(`\ufffd`) |
| 94 | + i += size |
| 95 | + start = i |
| 96 | + continue |
| 97 | + } |
| 98 | + |
| 99 | + if c == '\u2028' || c == '\u2029' { |
| 100 | + if start < i { |
| 101 | + buf.Write(s[start:i]) |
| 102 | + } |
| 103 | + buf.WriteString(`\u202`) |
| 104 | + buf.WriteByte(hex[c&0xF]) |
| 105 | + i += size |
| 106 | + start = i |
| 107 | + continue |
| 108 | + } |
| 109 | + i += size |
| 110 | + } |
| 111 | + if start < len(s) { |
| 112 | + buf.Write(s[start:]) |
| 113 | + } |
| 114 | + buf.WriteByte('"') |
| 115 | +} |
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