mirror of
https://github.com/podman-container-tools/podman.git
synced 2026-08-13 04:09:36 +00:00
7c8c945496
Pull in updates made to the filters code for images. Filters now perform an AND operation except for th reference filter which does an OR operation for positive case but an AND operation for negative cases. Signed-off-by: Urvashi Mohnani <umohnani@redhat.com>
46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
// Package strictyaml provides a strict YAML unmarshaller based on `go-yaml/yaml`
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package strictyaml
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"gopkg.in/yaml.v3"
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)
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// Unmarshal takes a byte array and an interface passed by reference. The
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// d.Decode will read the next YAML-encoded value from its input and store it in
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// the value pointed to by yamlObj. Any config keys from the incoming YAML
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// document which do not correspond to expected keys in the config struct will
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// result in errors.
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//
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// TODO(https://github.com/go-yaml/yaml/issues/639): Replace this function with
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// yaml.Unmarshal once a more ergonomic way to set unmarshal options is added
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// upstream.
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func Unmarshal(b []byte, yamlObj interface{}) error {
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r := bytes.NewReader(b)
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d := yaml.NewDecoder(r)
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d.KnownFields(true)
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// d.Decode will mutate yamlObj
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err := d.Decode(yamlObj)
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if err != nil {
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// io.EOF is returned when the YAML document is empty.
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if errors.Is(err, io.EOF) {
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return fmt.Errorf("unmarshalling YAML, bytes cannot be nil: %w", err)
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}
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return fmt.Errorf("unmarshalling YAML: %w", err)
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}
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// As bytes are read by the decoder, the length of the byte buffer should
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// decrease. If it doesn't, there's a problem.
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if r.Len() != 0 {
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return fmt.Errorf("yaml object of size %d bytes had %d bytes of unexpected unconsumed trailers", r.Size(), r.Len())
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}
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return nil
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}
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