64 lines
1.4 KiB
Go
64 lines
1.4 KiB
Go
//go:build !kvformat
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// +build !kvformat
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package kv
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import (
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"fmt"
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"sync"
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"codeberg.org/gruf/go-byteutil"
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)
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// bufPool is a memory pool of byte buffers.
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var bufPool = sync.Pool{
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New: func() interface{} {
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return &byteutil.Buffer{B: make([]byte, 0, 512)}
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},
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}
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// AppendFormat will append formatted format of Field to 'buf'. See .String() for details.
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func (f Field) AppendFormat(buf *byteutil.Buffer, vbose bool) {
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var fmtstr string
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if vbose /* verbose */ {
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fmtstr = `%#v`
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} else /* regular */ {
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fmtstr = `%+v`
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}
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AppendQuote(buf, f.K)
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buf.WriteByte('=')
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appendValuef(buf, fmtstr, f.V)
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}
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// Value returns the formatted value string of this Field.
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func (f Field) Value(vbose bool) string {
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var fmtstr string
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if vbose /* verbose */ {
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fmtstr = `%#v`
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} else /* regular */ {
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fmtstr = `%+v`
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}
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buf := byteutil.Buffer{B: make([]byte, 0, bufsize/2)}
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appendValuef(&buf, fmtstr, f.V)
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return buf.String()
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}
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// appendValuef appends a quoted value string (formatted by fmt.Appendf) to 'buf'.
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func appendValuef(buf *byteutil.Buffer, format string, args ...interface{}) {
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// Write format string to a byte buffer
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fmtbuf := bufPool.Get().(*byteutil.Buffer)
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fmtbuf.B = fmt.Appendf(fmtbuf.B, format, args...)
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// Append quoted value to dst buffer
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AppendQuote(buf, fmtbuf.String())
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// Drop overly large capacity buffers
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if fmtbuf.Cap() > int(^uint16(0)) {
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return
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}
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// Replace buffer in pool
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fmtbuf.Reset()
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bufPool.Put(fmtbuf)
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}
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