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Diffstat (limited to 'dependencies/pkg/mod/golang.org/x/xerrors@v0.0.0-20220907171357-04be3eba64a2/adaptor.go')
-rw-r--r--dependencies/pkg/mod/golang.org/x/xerrors@v0.0.0-20220907171357-04be3eba64a2/adaptor.go193
1 files changed, 193 insertions, 0 deletions
diff --git a/dependencies/pkg/mod/golang.org/x/xerrors@v0.0.0-20220907171357-04be3eba64a2/adaptor.go b/dependencies/pkg/mod/golang.org/x/xerrors@v0.0.0-20220907171357-04be3eba64a2/adaptor.go
new file mode 100644
index 0000000..4317f24
--- /dev/null
+++ b/dependencies/pkg/mod/golang.org/x/xerrors@v0.0.0-20220907171357-04be3eba64a2/adaptor.go
@@ -0,0 +1,193 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xerrors
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "reflect"
+ "strconv"
+)
+
+// FormatError calls the FormatError method of f with an errors.Printer
+// configured according to s and verb, and writes the result to s.
+func FormatError(f Formatter, s fmt.State, verb rune) {
+ // Assuming this function is only called from the Format method, and given
+ // that FormatError takes precedence over Format, it cannot be called from
+ // any package that supports errors.Formatter. It is therefore safe to
+ // disregard that State may be a specific printer implementation and use one
+ // of our choice instead.
+
+ // limitations: does not support printing error as Go struct.
+
+ var (
+ sep = " " // separator before next error
+ p = &state{State: s}
+ direct = true
+ )
+
+ var err error = f
+
+ switch verb {
+ // Note that this switch must match the preference order
+ // for ordinary string printing (%#v before %+v, and so on).
+
+ case 'v':
+ if s.Flag('#') {
+ if stringer, ok := err.(fmt.GoStringer); ok {
+ io.WriteString(&p.buf, stringer.GoString())
+ goto exit
+ }
+ // proceed as if it were %v
+ } else if s.Flag('+') {
+ p.printDetail = true
+ sep = "\n - "
+ }
+ case 's':
+ case 'q', 'x', 'X':
+ // Use an intermediate buffer in the rare cases that precision,
+ // truncation, or one of the alternative verbs (q, x, and X) are
+ // specified.
+ direct = false
+
+ default:
+ p.buf.WriteString("%!")
+ p.buf.WriteRune(verb)
+ p.buf.WriteByte('(')
+ switch {
+ case err != nil:
+ p.buf.WriteString(reflect.TypeOf(f).String())
+ default:
+ p.buf.WriteString("<nil>")
+ }
+ p.buf.WriteByte(')')
+ io.Copy(s, &p.buf)
+ return
+ }
+
+loop:
+ for {
+ switch v := err.(type) {
+ case Formatter:
+ err = v.FormatError((*printer)(p))
+ case fmt.Formatter:
+ v.Format(p, 'v')
+ break loop
+ default:
+ io.WriteString(&p.buf, v.Error())
+ break loop
+ }
+ if err == nil {
+ break
+ }
+ if p.needColon || !p.printDetail {
+ p.buf.WriteByte(':')
+ p.needColon = false
+ }
+ p.buf.WriteString(sep)
+ p.inDetail = false
+ p.needNewline = false
+ }
+
+exit:
+ width, okW := s.Width()
+ prec, okP := s.Precision()
+
+ if !direct || (okW && width > 0) || okP {
+ // Construct format string from State s.
+ format := []byte{'%'}
+ if s.Flag('-') {
+ format = append(format, '-')
+ }
+ if s.Flag('+') {
+ format = append(format, '+')
+ }
+ if s.Flag(' ') {
+ format = append(format, ' ')
+ }
+ if okW {
+ format = strconv.AppendInt(format, int64(width), 10)
+ }
+ if okP {
+ format = append(format, '.')
+ format = strconv.AppendInt(format, int64(prec), 10)
+ }
+ format = append(format, string(verb)...)
+ fmt.Fprintf(s, string(format), p.buf.String())
+ } else {
+ io.Copy(s, &p.buf)
+ }
+}
+
+var detailSep = []byte("\n ")
+
+// state tracks error printing state. It implements fmt.State.
+type state struct {
+ fmt.State
+ buf bytes.Buffer
+
+ printDetail bool
+ inDetail bool
+ needColon bool
+ needNewline bool
+}
+
+func (s *state) Write(b []byte) (n int, err error) {
+ if s.printDetail {
+ if len(b) == 0 {
+ return 0, nil
+ }
+ if s.inDetail && s.needColon {
+ s.needNewline = true
+ if b[0] == '\n' {
+ b = b[1:]
+ }
+ }
+ k := 0
+ for i, c := range b {
+ if s.needNewline {
+ if s.inDetail && s.needColon {
+ s.buf.WriteByte(':')
+ s.needColon = false
+ }
+ s.buf.Write(detailSep)
+ s.needNewline = false
+ }
+ if c == '\n' {
+ s.buf.Write(b[k:i])
+ k = i + 1
+ s.needNewline = true
+ }
+ }
+ s.buf.Write(b[k:])
+ if !s.inDetail {
+ s.needColon = true
+ }
+ } else if !s.inDetail {
+ s.buf.Write(b)
+ }
+ return len(b), nil
+}
+
+// printer wraps a state to implement an xerrors.Printer.
+type printer state
+
+func (s *printer) Print(args ...interface{}) {
+ if !s.inDetail || s.printDetail {
+ fmt.Fprint((*state)(s), args...)
+ }
+}
+
+func (s *printer) Printf(format string, args ...interface{}) {
+ if !s.inDetail || s.printDetail {
+ fmt.Fprintf((*state)(s), format, args...)
+ }
+}
+
+func (s *printer) Detail() bool {
+ s.inDetail = true
+ return s.printDetail
+}