Initial commit

vendor/github.com/hyperhq/hypercli/builder/dockerignore.go

@@ -0,0 +1,47 @@
+package builder
+
+import (
+	"os"
+
+	"github.com/docker/docker/builder/dockerignore"
+	"github.com/docker/docker/pkg/fileutils"
+)
+
+// DockerIgnoreContext wraps a ModifiableContext to add a method
+// for handling the .dockerignore file at the root of the context.
+type DockerIgnoreContext struct {
+	ModifiableContext
+}
+
+// Process reads the .dockerignore file at the root of the embedded context.
+// If .dockerignore does not exist in the context, then nil is returned.
+//
+// It can take a list of files to be removed after .dockerignore is removed.
+// This is used for server-side implementations of builders that need to send
+// the .dockerignore file as well as the special files specified in filesToRemove,
+// but expect them to be excluded from the context after they were processed.
+//
+// For example, server-side Dockerfile builders are expected to pass in the name
+// of the Dockerfile to be removed after it was parsed.
+//
+// TODO: Don't require a ModifiableContext (use Context instead) and don't remove
+// files, instead handle a list of files to be excluded from the context.
+func (c DockerIgnoreContext) Process(filesToRemove []string) error {
+	f, err := c.Open(".dockerignore")
+	// Note that a missing .dockerignore file isn't treated as an error
+	if err != nil {
+		if os.IsNotExist(err) {
+			return nil
+		}
+		return err
+	}
+	excludes, _ := dockerignore.ReadAll(f)
+	filesToRemove = append([]string{".dockerignore"}, filesToRemove...)
+	for _, fileToRemove := range filesToRemove {
+		rm, _ := fileutils.Matches(fileToRemove, excludes)
+		if rm {
+			c.Remove(fileToRemove)
+		}
+	}
+	return nil
+}