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dependencies.go
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dependencies.go
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package watch
import (
"go/build"
"regexp"
)
var ginkgoAndGomegaFilter = regexp.MustCompile(`github\.com/onsi/ginkgo|github\.com/onsi/gomega`)
var ginkgoIntegrationTestFilter = regexp.MustCompile(`github\.com/ptcar2009/ginkgo/integration`) //allow us to integration test this thing
type Dependencies struct {
deps map[string]int
}
func NewDependencies(path string, maxDepth int) (Dependencies, error) {
d := Dependencies{
deps: map[string]int{},
}
if maxDepth == 0 {
return d, nil
}
err := d.seedWithDepsForPackageAtPath(path)
if err != nil {
return d, err
}
for depth := 1; depth < maxDepth; depth++ {
n := len(d.deps)
d.addDepsForDepth(depth)
if n == len(d.deps) {
break
}
}
return d, nil
}
func (d Dependencies) Dependencies() map[string]int {
return d.deps
}
func (d Dependencies) seedWithDepsForPackageAtPath(path string) error {
pkg, err := build.ImportDir(path, 0)
if err != nil {
return err
}
d.resolveAndAdd(pkg.Imports, 1)
d.resolveAndAdd(pkg.TestImports, 1)
d.resolveAndAdd(pkg.XTestImports, 1)
delete(d.deps, pkg.Dir)
return nil
}
func (d Dependencies) addDepsForDepth(depth int) {
for dep, depDepth := range d.deps {
if depDepth == depth {
d.addDepsForDep(dep, depth+1)
}
}
}
func (d Dependencies) addDepsForDep(dep string, depth int) {
pkg, err := build.ImportDir(dep, 0)
if err != nil {
println(err.Error())
return
}
d.resolveAndAdd(pkg.Imports, depth)
}
func (d Dependencies) resolveAndAdd(deps []string, depth int) {
for _, dep := range deps {
pkg, err := build.Import(dep, ".", 0)
if err != nil {
continue
}
if !pkg.Goroot && (!ginkgoAndGomegaFilter.Match([]byte(pkg.Dir)) || ginkgoIntegrationTestFilter.Match([]byte(pkg.Dir))) {
d.addDepIfNotPresent(pkg.Dir, depth)
}
}
}
func (d Dependencies) addDepIfNotPresent(dep string, depth int) {
_, ok := d.deps[dep]
if !ok {
d.deps[dep] = depth
}
}