28 lines
1.2 KiB
Go
28 lines
1.2 KiB
Go
// Package common provides the PackerConfig structure that gets passed to every
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// plugin and contains information populated by the Packer core. This config
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// contains data about command line flags that were used, as well as template
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// information and information about the Packer core's version. It also
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// proivdes string constants to use to access that config.
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package common
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import (
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"os/exec"
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)
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// CommandWrapper is a type that given a command, will modify that
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// command in-flight. This might return an error.
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// For example, your command could be `foo` and your CommandWrapper could be
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// func(s string) (string, error) {
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// return fmt.Sprintf("/bin/sh/ %s", s)
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// }
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// Using the CommandWrapper, you can set environment variables or perform
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// string interpolation once rather than many times, to save some lines of code
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// if similar wrapping needs to be performed many times during a plugin run.
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type CommandWrapper func(string) (string, error)
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// ShellCommand takes a command string and returns an *exec.Cmd to execute
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// it within the context of a shell (/bin/sh).
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func ShellCommand(command string) *exec.Cmd {
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return exec.Command("/bin/sh", "-c", command)
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}
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