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package dockerfile2llb
import (
"github.com/containerd/platforms"
"github.com/moby/buildkit/client/llb"
ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
)
type platformOpt struct {
targetPlatform ocispecs.Platform
buildPlatforms []ocispecs.Platform
implicitTarget bool
}
func buildPlatformOpt(opt *ConvertOpt) *platformOpt {
buildPlatforms := opt.BuildPlatforms
targetPlatform := opt.TargetPlatform
implicitTargetPlatform := false
if opt.TargetPlatform != nil && opt.BuildPlatforms == nil {
buildPlatforms = []ocispecs.Platform{*opt.TargetPlatform}
}
if len(buildPlatforms) == 0 {
buildPlatforms = []ocispecs.Platform{platforms.DefaultSpec()}
}
if opt.TargetPlatform == nil {
implicitTargetPlatform = true
targetPlatform = &buildPlatforms[0]
}
return &platformOpt{
targetPlatform: *targetPlatform,
buildPlatforms: buildPlatforms,
implicitTarget: implicitTargetPlatform,
}
}
func defaultArgs(po *platformOpt, overrides map[string]string, target string) *llb.EnvList {
bp := po.buildPlatforms[0]
tp := po.targetPlatform
if target == "" {
target = "default"
}
s := [...][2]string{
{"BUILDPLATFORM", platforms.Format(bp)},
{"BUILDOS", bp.OS},
{"BUILDARCH", bp.Architecture},
{"BUILDVARIANT", bp.Variant},
{"TARGETPLATFORM", platforms.Format(tp)},
{"TARGETOS", tp.OS},
{"TARGETARCH", tp.Architecture},
{"TARGETVARIANT", tp.Variant},
{"TARGETSTAGE", target},
}
env := &llb.EnvList{}
for _, kv := range s {
v := kv[1]
if ov, ok := overrides[kv[0]]; ok {
v = ov
}
env = env.AddOrReplace(kv[0], v)
}
return env
}
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