add vendoring

vendor/github.com/jhillyerd/enmime/error.go

@@ -0,0 +1,77 @@
+package enmime
+
+import (
+	"fmt"
+)
+
+const (
+	// ErrorMalformedBase64 name.
+	ErrorMalformedBase64 = "Malformed Base64"
+	// ErrorMalformedHeader name.
+	ErrorMalformedHeader = "Malformed Header"
+	// ErrorMissingBoundary name.
+	ErrorMissingBoundary = "Missing Boundary"
+	// ErrorMissingContentType name.
+	ErrorMissingContentType = "Missing Content-Type"
+	// ErrorCharsetConversion name.
+	ErrorCharsetConversion = "Character Set Conversion"
+	// ErrorContentEncoding name.
+	ErrorContentEncoding = "Content Encoding"
+	// ErrorPlainTextFromHTML name.
+	ErrorPlainTextFromHTML = "Plain Text from HTML"
+	// ErrorCharsetDeclaration name.
+	ErrorCharsetDeclaration = "Character Set Declaration Mismatch"
+	// ErrorMissingRecipient name.
+	ErrorMissingRecipient = "no recipients (to, cc, bcc) set"
+	// ErrorMalformedChildPart name.
+	ErrorMalformedChildPart = "Malformed child part"
+)
+
+// MaxPartErrors limits number of part parsing errors, errors after the limit are ignored. 0 means unlimited.
+var MaxPartErrors = 0
+
+// Error describes an error encountered while parsing.
+type Error struct {
+	Name   string // The name or type of error encountered, from Error consts.
+	Detail string // Additional detail about the cause of the error, if available.
+	Severe bool   // Indicates that a portion of the message was lost during parsing.
+}
+
+// Error formats the enmime.Error as a string.
+func (e *Error) Error() string {
+	sev := "W"
+	if e.Severe {
+		sev = "E"
+	}
+	return fmt.Sprintf("[%s] %s: %s", sev, e.Name, e.Detail)
+}
+
+// String formats the enmime.Error as a string. DEPRECATED; use Error() instead.
+func (e *Error) String() string {
+	return e.Error()
+}
+
+// addWarning builds a severe Error and appends to the Part error slice.
+func (p *Part) addError(name string, detailFmt string, args ...interface{}) {
+	p.addProblem(&Error{
+		name,
+		fmt.Sprintf(detailFmt, args...),
+		true,
+	})
+}
+
+// addWarning builds a non-severe Error and appends to the Part error slice.
+func (p *Part) addWarning(name string, detailFmt string, args ...interface{}) {
+	p.addProblem(&Error{
+		name,
+		fmt.Sprintf(detailFmt, args...),
+		false,
+	})
+}
+
+// addProblem adds general *Error to the Part error slice.
+func (p *Part) addProblem(err *Error) {
+	if (MaxPartErrors == 0) || (len(p.Errors) < MaxPartErrors) {
+		p.Errors = append(p.Errors, err)
+	}
+}