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Andrey Nering 6ed30f1add Refactor variables: Keep order of declaration
This shouldn't have any behavior changes for now. This is a code
refactor that should allow us to do further improvements on how
variables are handled, specially regarding respecting the declaration
order in Taskfiles, which should make it easier for the users.

Initial work on #218
2020-04-05 11:16:14 -03:00

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)
}