(ctx *FmtCtx)
| 45 | } |
| 46 | |
| 47 | func (d *DTuple) pgwireFormat(ctx *FmtCtx) { |
| 48 | // When converting a tuple to text in "postgres mode" there is |
| 49 | // special behavior: values are printed in "postgres mode" then the |
| 50 | // result string itself is rendered in "postgres mode". |
| 51 | // Immediate NULL tuple elements are printed as the empty string. |
| 52 | // |
| 53 | // In this last conversion, for *tuples* the special double quote |
| 54 | // and backslash characters are *doubled* (not escaped). Other |
| 55 | // special characters from C like \t \n etc are not escaped and |
| 56 | // instead printed as-is. Only non-valid characters get escaped to |
| 57 | // hex. So we delegate this formatting to a tuple-specific |
| 58 | // string printer called pgwireFormatStringInTuple(). |
| 59 | ctx.WriteByte('(') |
| 60 | comma := "" |
| 61 | tc := d.ResolvedType().TupleContents() |
| 62 | for i, v := range d.D { |
| 63 | ctx.WriteString(comma) |
| 64 | var t *types.T |
| 65 | if i < len(tc) { |
| 66 | t = tc[i] |
| 67 | } else { |
| 68 | t = v.ResolvedType() |
| 69 | } |
| 70 | switch dv := UnwrapDOidWrapper(v).(type) { |
| 71 | case dNull: |
| 72 | case *DString: |
| 73 | s := ResolveBlankPaddedChar(string(*dv), t) |
| 74 | pgwireFormatStringInTuple(&ctx.Buffer, s) |
| 75 | case *DCollatedString: |
| 76 | s := ResolveBlankPaddedChar(dv.Contents, t) |
| 77 | pgwireFormatStringInTuple(&ctx.Buffer, s) |
| 78 | // Bytes cannot use the default case because they will be incorrectly |
| 79 | // double escaped. |
| 80 | case *DBytes: |
| 81 | ctx.WriteString(`"\`) |
| 82 | ctx.FormatNode(dv) |
| 83 | ctx.WriteString(`"`) |
| 84 | case *DJSON: |
| 85 | var buf bytes.Buffer |
| 86 | dv.JSON.Format(&buf) |
| 87 | pgwireFormatStringInTuple(&ctx.Buffer, buf.String()) |
| 88 | case *DFloat: |
| 89 | fl := float64(*dv) |
| 90 | b := PgwireFormatFloat(nil /*buf*/, fl, ctx.dataConversionConfig, t) |
| 91 | ctx.WriteString(string(b)) |
| 92 | default: |
| 93 | s := AsStringWithFlags(v, ctx.flags, FmtDataConversionConfig(ctx.dataConversionConfig), FmtLocation(ctx.location)) |
| 94 | pgwireFormatStringInTuple(&ctx.Buffer, s) |
| 95 | } |
| 96 | comma = "," |
| 97 | } |
| 98 | ctx.WriteByte(')') |
| 99 | } |
| 100 | |
| 101 | func pgwireFormatStringInTuple(buf *bytes.Buffer, in string) { |
| 102 | quote := pgwireQuoteStringInTuple(in) |
no test coverage detected