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task/taskfile/merge.go
2020-08-19 10:59:58 +02:00

69 lines
1.6 KiB
Go

package taskfile
import (
"fmt"
"strings"
)
// NamespaceSeparator contains the character that separates namescapes
const NamespaceSeparator = ":"
// Merge merges the second Taskfile into the first
func Merge(t1, t2 *Taskfile, namespaces ...string) error {
if t1.Version != t2.Version {
return fmt.Errorf(`Taskfiles versions should match. First is "%s" but second is "%s"`, t1.Version, t2.Version)
}
if t2.Expansions != 0 && t2.Expansions != 2 {
t1.Expansions = t2.Expansions
}
if t2.Output != "" {
t1.Output = t2.Output
}
if t1.Includes == nil {
t1.Includes = make(IncludedTaskfiles)
}
for k, v := range t2.Includes {
t1.Includes[k] = v
}
if t1.Vars == nil {
t1.Vars = &Vars{}
}
if t1.Env == nil {
t1.Env = &Vars{}
}
t1.Vars.Merge(t2.Vars)
t1.Env.Merge(t2.Env)
if t1.Tasks == nil {
t1.Tasks = make(Tasks)
}
for k, v := range t2.Tasks {
// FIXME(@andreynering): Refactor this block, otherwise we can
// have serious side-effects in the future, since we're editing
// the original references instead of deep copying them.
t1.Tasks[taskNameWithNamespace(k, namespaces...)] = v
for _, dep := range v.Deps {
dep.Task = taskNameWithNamespace(dep.Task, namespaces...)
}
for _, cmd := range v.Cmds {
if cmd.Task != "" {
cmd.Task = taskNameWithNamespace(cmd.Task, namespaces...)
}
}
}
return nil
}
func taskNameWithNamespace(taskName string, namespaces ...string) string {
if strings.HasPrefix(taskName, ":") {
return strings.TrimPrefix(taskName, ":")
}
return strings.Join(append(namespaces, taskName), NamespaceSeparator)
}