mirror of
https://github.com/anchore/syft
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256e85bc12
add syft attest command to produce an attestation as application/vnd.in-toto+json to standard out using on disk PKI Signed-off-by: Christopher Phillips <christopher.phillips@anchore.com>
26 lines
975 B
Go
26 lines
975 B
Go
package internal
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import (
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"fmt"
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"os"
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)
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// IsPipedInput returns true if there is no input device, which means the user **may** be providing input via a pipe.
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func IsPipedInput() (bool, error) {
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fi, err := os.Stdin.Stat()
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if err != nil {
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return false, fmt.Errorf("unable to determine if there is piped input: %w", err)
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}
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// note: we should NOT use the absence of a character device here as the hint that there may be input expected
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// on stdin, as running syft as a subprocess you would expect no character device to be present but input can
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// be from either stdin or indicated by the CLI. Checking if stdin is a pipe is the most direct way to determine
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// if there *may* be bytes that will show up on stdin that should be used for the analysis source.
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return fi.Mode()&os.ModeNamedPipe != 0, nil
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}
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// IsTerminal returns true if there is a terminal present.
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func IsTerminal() bool {
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stat, _ := os.Stdin.Stat()
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return (stat.Mode() & os.ModeCharDevice) != 0
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}
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