antanst
5f4da4f806
- Replace custom error handling with xerrors package - Enhance error descriptions for better debugging - Add text utilities for string processing - Update error tests to use standard errors package - Add String() method to GeminiError
65 lines
1.6 KiB
Go
65 lines
1.6 KiB
Go
package gemini
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import (
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"errors"
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"fmt"
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)
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// GeminiError is used to represent
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// Gemini network protocol errors only.
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// Should be recorded to the snapshot.
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// See https://geminiprotocol.net/docs/protocol-specification.gmi
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type GeminiError struct {
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Msg string
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Code int
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Header string
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}
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func (e *GeminiError) Error() string {
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return fmt.Sprintf("gemini error: code %d %s", e.Code, e.Msg)
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}
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func (e *GeminiError) String() string {
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return e.Error()
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}
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// NewGeminiError creates a new GeminiError based on the status code and header.
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// Status codes are based on the Gemini protocol specification:
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// - 1x: Input required
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// - 2x: Success (not handled as errors)
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// - 3x: Redirect
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// - 4x: Temporary failure
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// - 5x: Permanent failure
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// - 6x: Client certificate required/rejected
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func NewGeminiError(code int, header string) error {
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var msg string
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switch {
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case code >= 10 && code < 20:
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msg = fmt.Sprintf("input required: %s", header)
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case code >= 30 && code < 40:
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msg = fmt.Sprintf("redirect: %s", header)
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case code >= 40 && code < 50:
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msg = fmt.Sprintf("request failed: %s", header)
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case code >= 50 && code < 60:
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msg = fmt.Sprintf("server error: %s", header)
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case code >= 60 && code < 70:
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msg = fmt.Sprintf("TLS error: %s", header)
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default:
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msg = fmt.Sprintf("unexpected status code %d: %s", code, header)
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}
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return &GeminiError{
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Msg: msg,
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Code: code,
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Header: header,
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}
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}
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// IsGeminiError checks if the given error is a GeminiError.
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func IsGeminiError(err error) bool {
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if err == nil {
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return false
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}
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var asError *GeminiError
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return errors.As(err, &asError)
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}
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