"github.com/google/pprof/internal/report"
)

// stackView generates the flamegraph view.
func (ui *webInterface) stackView(w http.ResponseWriter, req *http.Request) {
	// Get all data in a report.
	rpt, errList := ui.makeReport(w, req, []string{"svg"}, func(cfg *config) {
		cfg.CallTree = true
		cfg.Trim = false
		cfg.Granularity = "filefunctions"
	})
	if rpt == nil {
		return // error already reported
	}

John Howard <******@****.***> 1714485406 -0700

// that a file or directory already exists. It is satisfied by [ErrExist] as
// well as some syscall errors.
//
// This function predates [errors.Is]. It only supports errors returned by
// the os package. New code should use errors.Is(err, fs.ErrExist).
func IsExist(err error) bool {
	return underlyingErrorIs(err, ErrExist)
}

// IsNotExist returns a boolean indicating whether the error is known to

		f, err := OpenFile(name, O_RDWR|O_CREATE|O_EXCL, 0600)
		if IsExist(err) {
			if try++; try < 10000 {
				continue
			}
			return nil, &PathError{Op: "createtemp", Path: prefix + "*" + suffix, Err: ErrExist}
		}
		return f, err
	}
}

var errPatternHasSeparator = errors.New("pattern contains path separator")

// prefixAndSuffix splits pattern by the last wildcard "*", if applicable,

	ErrExist      = errExist()      // "file already exists"
	ErrNotExist   = errNotExist()   // "file does not exist"
	ErrClosed     = errClosed()     // "file already closed"
)

func errInvalid() error    { return oserror.ErrInvalid }
func errPermission() error { return oserror.ErrPermission }
func errExist() error      { return oserror.ErrExist }

//
// An error type might provide an Is method so it can be treated as equivalent
// to an existing error. For example, if MyError defines
//
//	func (m MyError) Is(target error) bool { return target == fs.ErrExist }
//
// then Is(MyError{}, fs.ErrExist) returns true. See [syscall.Errno.Is] for
// an example in the standard library. An Is method should only shallowly
// compare err and the target and not call [Unwrap] on either.

			return s
		}
	}
	return "errno " + itoa.Itoa(int(e))
}

func (e Errno) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return e == EACCES || e == EPERM
	case oserror.ErrExist:
		return e == EEXIST || e == ENOTEMPTY
	case oserror.ErrNotExist:
		return e == ENOENT
	case errorspkg.ErrUnsupported:
		return e == ENOSYS || e == ENOTSUP || e == EOPNOTSUPP
	}
	return false
}

			return s
		}
	}
	return "errno " + itoa.Itoa(int(e))
}

func (e Errno) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return e == EACCES || e == EPERM
	case oserror.ErrExist:
		return e == EEXIST || e == ENOTEMPTY
	case oserror.ErrNotExist:
		return e == ENOENT
	case errors.ErrUnsupported:
		return e == ENOSYS
	}
	return false
}

func (e Errno) Temporary() bool {

func NewError(s string) error { return ErrorString(s) }

func (e ErrorString) Is(target error) bool {
	switch target {
	case oserror.ErrPermission:
		return checkErrMessageContent(e, "permission denied")
	case oserror.ErrExist:
		return checkErrMessageContent(e, "exists", "is a directory")
	case oserror.ErrNotExist:
		return checkErrMessageContent(e, "does not exist", "not found",
			"has been removed", "no parent")
	case errors.ErrUnsupported: