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authorMichael Muré <batolettre@gmail.com>2018-12-23 17:11:37 +0100
committerMichael Muré <batolettre@gmail.com>2018-12-23 17:11:37 +0100
commit1410a1af75b1ab9ea3f980a7e372728f9a123abf (patch)
treee24db8f84c48b20158b1f1fd6d281d700421279c /vendor/github.com/urfave/cli/errors.go
parent8fc15a032f021c855abf66ed303c003d57c340ea (diff)
downloadgit-bug-1410a1af75b1ab9ea3f980a7e372728f9a123abf.tar.gz
upgrade gqlgen to v0.7.1
Diffstat (limited to 'vendor/github.com/urfave/cli/errors.go')
-rw-r--r--vendor/github.com/urfave/cli/errors.go115
1 files changed, 115 insertions, 0 deletions
diff --git a/vendor/github.com/urfave/cli/errors.go b/vendor/github.com/urfave/cli/errors.go
new file mode 100644
index 00000000..562b2953
--- /dev/null
+++ b/vendor/github.com/urfave/cli/errors.go
@@ -0,0 +1,115 @@
+package cli
+
+import (
+ "fmt"
+ "io"
+ "os"
+ "strings"
+)
+
+// OsExiter is the function used when the app exits. If not set defaults to os.Exit.
+var OsExiter = os.Exit
+
+// ErrWriter is used to write errors to the user. This can be anything
+// implementing the io.Writer interface and defaults to os.Stderr.
+var ErrWriter io.Writer = os.Stderr
+
+// MultiError is an error that wraps multiple errors.
+type MultiError struct {
+ Errors []error
+}
+
+// NewMultiError creates a new MultiError. Pass in one or more errors.
+func NewMultiError(err ...error) MultiError {
+ return MultiError{Errors: err}
+}
+
+// Error implements the error interface.
+func (m MultiError) Error() string {
+ errs := make([]string, len(m.Errors))
+ for i, err := range m.Errors {
+ errs[i] = err.Error()
+ }
+
+ return strings.Join(errs, "\n")
+}
+
+type ErrorFormatter interface {
+ Format(s fmt.State, verb rune)
+}
+
+// ExitCoder is the interface checked by `App` and `Command` for a custom exit
+// code
+type ExitCoder interface {
+ error
+ ExitCode() int
+}
+
+// ExitError fulfills both the builtin `error` interface and `ExitCoder`
+type ExitError struct {
+ exitCode int
+ message interface{}
+}
+
+// NewExitError makes a new *ExitError
+func NewExitError(message interface{}, exitCode int) *ExitError {
+ return &ExitError{
+ exitCode: exitCode,
+ message: message,
+ }
+}
+
+// Error returns the string message, fulfilling the interface required by
+// `error`
+func (ee *ExitError) Error() string {
+ return fmt.Sprintf("%v", ee.message)
+}
+
+// ExitCode returns the exit code, fulfilling the interface required by
+// `ExitCoder`
+func (ee *ExitError) ExitCode() int {
+ return ee.exitCode
+}
+
+// HandleExitCoder checks if the error fulfills the ExitCoder interface, and if
+// so prints the error to stderr (if it is non-empty) and calls OsExiter with the
+// given exit code. If the given error is a MultiError, then this func is
+// called on all members of the Errors slice and calls OsExiter with the last exit code.
+func HandleExitCoder(err error) {
+ if err == nil {
+ return
+ }
+
+ if exitErr, ok := err.(ExitCoder); ok {
+ if err.Error() != "" {
+ if _, ok := exitErr.(ErrorFormatter); ok {
+ fmt.Fprintf(ErrWriter, "%+v\n", err)
+ } else {
+ fmt.Fprintln(ErrWriter, err)
+ }
+ }
+ OsExiter(exitErr.ExitCode())
+ return
+ }
+
+ if multiErr, ok := err.(MultiError); ok {
+ code := handleMultiError(multiErr)
+ OsExiter(code)
+ return
+ }
+}
+
+func handleMultiError(multiErr MultiError) int {
+ code := 1
+ for _, merr := range multiErr.Errors {
+ if multiErr2, ok := merr.(MultiError); ok {
+ code = handleMultiError(multiErr2)
+ } else {
+ fmt.Fprintln(ErrWriter, merr)
+ if exitErr, ok := merr.(ExitCoder); ok {
+ code = exitErr.ExitCode()
+ }
+ }
+ }
+ return code
+}