48 lines
901 B
Go
48 lines
901 B
Go
package instruction
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import (
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"fmt"
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"os"
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"strings"
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)
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type copy struct {
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raw string
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Src string
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Dst string
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}
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func (d *copy) Raw() string { return strings.Join([]string{"copy", d.raw}, " ") }
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func (d *copy) Build(_args string) error {
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// 1. extract action (sub command)
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split := strings.Split(_args, " ")
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// 2. check syntax
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if len(split) != 2 {
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return ErrInvalidSyntax
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}
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d.Src = strings.Trim(split[0], " \t")
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d.Dst = strings.Trim(split[1], " \t")
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d.raw = _args
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return nil
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}
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func (d copy) Exec(ctx ExecutionContext) ([]byte, error) {
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// 1. fail if source file not found
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if _, err := os.Stat(d.Src); os.IsNotExist(err) {
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return nil, fmt.Errorf("cannot find script '%s'", d.Src)
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}
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// 2. execute script
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if err := ctx.Executor.Command("cp", d.Src, d.Dst).Run(); err != nil {
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return nil, fmt.Errorf("cannot copy '%s' to '%s' | %s", d.Src, d.Dst, err)
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}
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return nil, nil
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}
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