replace zxq.co/ripple/hanayo

vendor/github.com/ansel1/merry/print.go

@@ -0,0 +1,68 @@
+package merry
+
+import (
+	"bytes"
+	"fmt"
+
+	"runtime"
+)
+
+// Location returns zero values if e has no stacktrace
+func Location(e error) (file string, line int) {
+	s := Stack(e)
+	if len(s) > 0 {
+		fnc := runtime.FuncForPC(s[0])
+		if fnc != nil {
+			return fnc.FileLine(s[0])
+		}
+	}
+	return "", 0
+}
+
+// SourceLine returns the string representation of
+// Location's result or an empty string if there's
+// no stracktrace.
+func SourceLine(e error) string {
+	file, line := Location(e)
+	if line != 0 {
+		return fmt.Sprintf("%s:%d", file, line)
+	}
+	return ""
+}
+
+// Stacktrace returns the error's stacktrace as a string formatted
+// the same way as golangs runtime package.
+// If e has no stacktrace, returns an empty string.
+func Stacktrace(e error) string {
+	s := Stack(e)
+	if len(s) > 0 {
+		buf := bytes.Buffer{}
+		for _, fp := range s {
+			fnc := runtime.FuncForPC(fp)
+			if fnc != nil {
+				f, l := fnc.FileLine(fp)
+				buf.WriteString(fnc.Name())
+				buf.WriteString(fmt.Sprintf("\n\t%s:%d\n", f, l))
+			}
+		}
+		return buf.String()
+	}
+	return ""
+}
+
+// Details returns e.Error() and e's stacktrace and user message, if set.
+func Details(e error) string {
+	if e == nil {
+		return ""
+	}
+	msg := Message(e)
+	userMsg := UserMessage(e)
+	if userMsg != "" {
+		msg = fmt.Sprintf("%s\n\nUser Message: %s", msg, userMsg)
+	}
+	s := Stacktrace(e)
+	if s != "" {
+		msg += "\n\n" + s
+	}
+	return msg
+}