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fq/pkg/interp/decorator.go
2022-03-03 17:55:24 +01:00

109 lines
2.4 KiB
Go

package interp
import (
"math/big"
"github.com/wader/fq/internal/ansi"
"github.com/wader/fq/pkg/bitio"
)
var PlainDecorator = Decorator{
Column: "|",
ValueColor: func(v interface{}) ansi.Code { return ansi.None },
ByteColor: func(b byte) ansi.Code { return ansi.None },
}
func decoratorFromOptions(opts Options) Decorator {
d := PlainDecorator
if opts.Unicode {
// U+2502 Box Drawings Light Vertical
d.Column = "│"
}
if opts.Color {
colors := opts.Colors
d.Null = ansi.FromString(colors["null"])
d.False = ansi.FromString(colors["false"])
d.True = ansi.FromString(colors["true"])
d.Number = ansi.FromString(colors["number"])
d.String = ansi.FromString(colors["string"])
d.ObjectKey = ansi.FromString(colors["objectkey"])
d.Array = ansi.FromString(colors["array"])
d.Object = ansi.FromString(colors["object"])
d.Index = ansi.FromString(colors["index"])
d.Value = ansi.FromString(colors["value"])
d.DumpHeader = ansi.FromString(colors["dumpheader"])
d.DumpAddr = ansi.FromString(colors["dumpaddr"])
d.Error = ansi.FromString(colors["error"])
d.ValueColor = func(v interface{}) ansi.Code {
switch vv := v.(type) {
case bool:
if vv {
return d.True
}
return d.False
case string, bitio.Reader:
return d.String
case nil:
return d.Null
case int, float64, int64, uint64:
// TODO: clean up number types
return d.Number
case *big.Int:
return d.Number
default:
panic("unreachable")
}
}
byteDefaultColor := ansi.FromString("")
byteColors := map[byte]ansi.Code{}
for i := 0; i < 256; i++ {
byteColors[byte(i)] = byteDefaultColor
}
for _, sr := range opts.ByteColors {
c := ansi.FromString(sr.Value)
for _, r := range sr.Ranges {
for i := r[0]; i <= r[1]; i++ {
byteColors[byte(i)] = c
}
}
}
d.ByteColor = func(b byte) ansi.Code { return byteColors[b] }
} else {
d.ValueColor = func(v interface{}) ansi.Code { return ansi.None }
d.ByteColor = func(b byte) ansi.Code { return ansi.None }
}
return d
}
type Decorator struct {
Null ansi.Code
False ansi.Code
True ansi.Code
Number ansi.Code
String ansi.Code
ObjectKey ansi.Code
Array ansi.Code
Object ansi.Code
Index ansi.Code
Value ansi.Code
DumpHeader ansi.Code
DumpAddr ansi.Code
Error ansi.Code
ValueColor func(v interface{}) ansi.Code
ByteColor func(b byte) ansi.Code
Column string
}