e43b5ce5e5
This is possible now that we no longer support go1.12 and brings rclone into line with standard practices in the Go world. This also removes errors.New and errors.Errorf from lib/errors and prefers the stdlib errors package over lib/errors.
60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
package vfscommon
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import (
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"fmt"
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"github.com/rclone/rclone/fs"
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)
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// CacheMode controls the functionality of the cache
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type CacheMode byte
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// CacheMode options
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const (
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CacheModeOff CacheMode = iota // cache nothing - return errors for writes which can't be satisfied
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CacheModeMinimal // cache only the minimum, e.g. read/write opens
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CacheModeWrites // cache all files opened with write intent
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CacheModeFull // cache all files opened in any mode
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)
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var cacheModeToString = []string{
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CacheModeOff: "off",
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CacheModeMinimal: "minimal",
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CacheModeWrites: "writes",
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CacheModeFull: "full",
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}
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// String turns a CacheMode into a string
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func (l CacheMode) String() string {
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if l >= CacheMode(len(cacheModeToString)) {
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return fmt.Sprintf("CacheMode(%d)", l)
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}
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return cacheModeToString[l]
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}
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// Set a CacheMode
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func (l *CacheMode) Set(s string) error {
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for n, name := range cacheModeToString {
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if s != "" && name == s {
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*l = CacheMode(n)
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return nil
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}
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}
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return fmt.Errorf("Unknown cache mode level %q", s)
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}
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// Type of the value
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func (l *CacheMode) Type() string {
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return "CacheMode"
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}
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// UnmarshalJSON makes sure the value can be parsed as a string or integer in JSON
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func (l *CacheMode) UnmarshalJSON(in []byte) error {
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return fs.UnmarshalJSONFlag(in, l, func(i int64) error {
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if i < 0 || i >= int64(len(cacheModeToString)) {
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return fmt.Errorf("Unknown cache mode level %d", i)
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}
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*l = CacheMode(i)
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return nil
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})
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}
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