homemaker/task.go
tridentlead 66eb33b724
Added support for pre and post commands
Two new fields were added to the config. Precmds runs before cmds and
links. Postcmds runs after cmds and links. Cmds is no longer necessary
but was left in for compatibility.
2017-01-04 10:21:35 -05:00

142 lines
3.3 KiB
Go

/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package main
import (
"fmt"
"log"
)
type task struct {
Deps []string
Links [][]string
Precmds [][]string
Cmds [][]string
Postcmds [][]string
Envs [][]string
Accepts [][]string
Rejects [][]string
}
func (t *task) deps(conf *config) []string {
deps := t.Deps
if conf.flags&flagNoCmds == 0 {
for _, currCmd := range t.Cmds {
deps = append(deps, findCmdDeps(currCmd, conf)...)
}
}
return deps
}
func (t *task) process(conf *config) error {
for _, currTask := range t.deps(conf) {
if err := processTask(currTask, conf); err != nil {
return err
}
}
for _, currEnv := range t.Envs {
if err := processEnv(currEnv, conf); err != nil {
return err
}
}
if conf.flags&flagNoCmds == 0 {
for _, currCmd := range t.Precmds {
if err := processCmd(currCmd, true, conf); err != nil {
return err
}
}
}
if conf.flags&flagNoCmds == 0 {
for _, currCmd := range t.Cmds {
if err := processCmd(currCmd, true, conf); err != nil {
return err
}
}
}
if conf.flags&flagNoLinks == 0 {
for _, currLink := range t.Links {
if err := processLink(currLink, conf); err != nil {
return err
}
}
}
if conf.flags&flagNoCmds == 0 {
for _, currCmd := range t.Postcmds {
if err := processCmd(currCmd, true, conf); err != nil {
return err
}
}
}
return nil
}
func (t *task) skippable(conf *config) bool {
for _, currCnd := range t.Accepts {
if err := processCmd(currCnd, false, conf); err != nil {
return true
}
}
for _, currCnd := range t.Rejects {
if err := processCmd(currCnd, false, conf); err == nil {
return true
}
}
return false
}
func processTask(taskName string, conf *config) error {
for _, tn := range makeVariantNames(taskName, conf.variant) {
t, ok := conf.Tasks[tn]
if !ok {
continue
}
if conf.handled[tn] || t.skippable(conf) {
if conf.flags&flagVerbose != 0 {
log.Printf("skipping task: %s", tn)
}
return nil
}
if conf.flags&flagVerbose != 0 {
log.Printf("processing task: %s", tn)
}
conf.handled[tn] = true
return t.process(conf)
}
return fmt.Errorf("task or variant not found: %s", taskName)
}