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ae3963e4b4
Before this change options were read and set in native format. This means for example nanoseconds for durations or an integer for enumerated types, which isn't very convenient for humans. This change enables these types to be set with a string with the syntax as used in the command line instead, so `"10s"` rather than `10000000000` or `"DEBUG"` rather than `8` for log level.
62 lines
1.5 KiB
Go
62 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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"github.com/rclone/rclone/lib/errors"
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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 errors.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 errors.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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