Christian Schwarz
2ce07c9342
config defines a single datastructure that can act both as a Map and as a Filter (DatasetMapFilter) Cleanup wildcard syntax along the way (also changes semantics).
39 lines
716 B
Go
39 lines
716 B
Go
package zfs
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import "fmt"
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type DatasetFilter interface {
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Filter(p DatasetPath) (pass bool, err error)
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}
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func ZFSListMapping(filter DatasetFilter) (datasets []DatasetPath, err error) {
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if filter == nil {
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panic("filter must not be nil")
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}
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var lines [][]string
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lines, err = ZFSList([]string{"name"}, "-r", "-t", "filesystem,volume")
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datasets = make([]DatasetPath, 0, len(lines))
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for _, line := range lines {
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var path DatasetPath
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if path, err = NewDatasetPath(line[0]); err != nil {
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return
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}
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pass, filterErr := filter.Filter(path)
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if filterErr != nil {
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return nil, fmt.Errorf("error calling filter: %s", filterErr)
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}
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if pass {
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datasets = append(datasets, path)
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}
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}
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return
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}
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