homemaker/task.go

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/*
* 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
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import "fmt"
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type link []string
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type task struct {
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Deps []string
Links []link
}
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func (this *task) walk(conf *config, depFunc func(depTask *task) error, linkFunc func(currLink *link) error) error {
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for _, depName := range this.Deps {
depTask, ok := conf.Tasks[depName]
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if !ok {
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return fmt.Errorf("Task dependency not found: '%s'", depName)
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}
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if err := depFunc(&depTask); err != nil {
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return err
}
}
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for _, currLink := range this.Links {
if err := linkFunc(&currLink); err != nil {
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return err
}
}
return nil
}
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func (this *task) install(srcDir, dstDir string, conf *config, flags int) error {
depWalker := func(depTask *task) error {
return depTask.install(srcDir, dstDir, conf, flags)
}
linkWalker := func(currLink *link) error {
return currLink.install(srcDir, dstDir, flags)
}
return this.walk(conf, depWalker, linkWalker)
}
func (this *task) uninstall(dstDir string, conf *config, flags int) error {
depWalker := func(depTask *task) error {
return depTask.uninstall(dstDir, conf, flags)
}
linkWalker := func(currLink *link) error {
return currLink.uninstall(dstDir, flags)
}
return this.walk(conf, depWalker, linkWalker)
}