1 files changed, 121 insertions, 0 deletions
diff --git a/compat/json/compat.go b/compat/json/compat.go
new file mode 100644
index 0000000..78a9d5f
--- /dev/null
+++ b/compat/json/compat.go
@@ -0,0 +1,121 @@
+// Copyright (C) 2022  Luke Shumaker <lukeshu@lukeshu.com>
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+package json
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/json"
+	"io"
+
+	"git.lukeshu.com/go/lowmemjson"
+)
+
+type (
+	Number     = json.Number
+	Marshaler  = json.Marshaler
+	RawMessage = json.RawMessage
+
+	// low-level decode errors
+	SyntaxError         = lowmemjson.SyntaxError
+	UnmarshalFieldError = json.UnmarshalFieldError
+	UnmarshalTypeError  = json.UnmarshalTypeError // lowmemjson.DecodeTypeError
+
+	// high-level decode errors
+	InvalidUnmarshalError = json.InvalidUnmarshalError // lowmemjson.DecodeArgumentError
+
+	// marshal errors
+	InvalidUTF8Error      = json.InvalidUTF8Error
+	MarshalerError        = json.MarshalerError
+	UnsupportedTypeError  = json.UnsupportedTypeError
+	UnsupportedValueError = json.UnsupportedValueError
+)
+
+/////////////////////////////////////////////////////////////////////
+
+func MarshalIndent(v any, prefix, indent string) ([]byte, error) {
+	var buf bytes.Buffer
+	formatter := &lowmemjson.ReEncoder{
+		Out:    &buf,
+		Indent: indent,
+		Prefix: prefix,
+	}
+	err := lowmemjson.Encode(formatter, v)
+	return buf.Bytes(), err
+}
+
+func Marshal(v any) ([]byte, error) {
+	var buf bytes.Buffer
+	formatter := &lowmemjson.ReEncoder{
+		Out:     &buf,
+		Compact: true,
+	}
+	err := lowmemjson.Encode(formatter, v)
+	return buf.Bytes(), err
+}
+
+func HTMLEscape(dst *bytes.Buffer, src []byte) {
+	formatter := &lowmemjson.ReEncoder{
+		Out: dst,
+	}
+	_, _ = formatter.Write(src)
+}
+
+func Compact(dst *bytes.Buffer, src []byte) error {
+	formatter := &lowmemjson.ReEncoder{
+		Out:     dst,
+		Compact: true,
+	}
+	_, err := formatter.Write(src)
+	return err
+}
+
+func Indent(dst *bytes.Buffer, src []byte, prefix, indent string) error {
+	formatter := &lowmemjson.ReEncoder{
+		Out:    dst,
+		Indent: indent,
+		Prefix: prefix,
+	}
+	_, err := formatter.Write(src)
+	return err
+}
+
+func Valid(data []byte) bool {
+	formatter := &lowmemjson.ReEncoder{
+		Out:     io.Discard,
+		Compact: true,
+	}
+	_, err := formatter.Write(data)
+	return err == nil
+}
+
+func Unmarshal(data []byte, ptr any) error {
+	return lowmemjson.Decode(bytes.NewReader(data), ptr)
+}
+
+/////////////////////////////////////////////////////////////////////
+
+type Decoder struct {
+	*lowmemjson.Decoder
+	buf *bufio.Reader
+}
+
+func NewDecoder(r io.Reader) *Decoder {
+	br, ok := r.(*bufio.Reader)
+	if !ok {
+		br = bufio.NewReader(r)
+	}
+	return &Decoder{
+		Decoder: lowmemjson.NewDecoder(br),
+		buf:     br,
+	}
+}
+
+func (dec *Decoder) Buffered() io.Reader {
+	dat, _ := dec.buf.Peek(dec.buf.Buffered())
+	return bytes.NewReader(dat)
+}
+
+//func (dec *Decoder) Token() (Token, error)