Restore --format table header support

Signed-off-by: Jhon Honce <jhonce@redhat.com>

1 files changed, 22 insertions, 0 deletions

diff --git a/cmd/podman/parse/template.go b/cmd/podman/parse/template.go
new file mode 100644
index 000000000..0b80f1b3a
--- /dev/null
+++ b/cmd/podman/parse/template.go
@@ -0,0 +1,22 @@
+package parse
+
+import (
+	"regexp"
+	"strings"
+)
+
+var rangeRegex = regexp.MustCompile(`{{\s*range\s*\.\s*}}.*{{\s*end\s*}}`)
+
+// TODO move to github.com/containers/common/pkg/report
+// EnforceRange ensures that the format string contains a range
+func EnforceRange(format string) string {
+	if !rangeRegex.MatchString(format) {
+		return "{{range .}}" + format + "{{end}}"
+	}
+	return format
+}
+
+// EnforceRange ensures that the format string contains a range
+func HasTable(format string) bool {
+	return strings.HasPrefix(format, "table ")
+}