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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| package nut | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "sort" | ||
| "strings" | ||
| ) | ||
|
|
||
| type AddDependencyError struct { | ||
| ex, add *Dependency | ||
| } | ||
|
|
||
| // check interface | ||
| var ( | ||
| _ error = &AddDependencyError{} | ||
| ) | ||
|
|
||
| func (e *AddDependencyError) Error() string { | ||
| return fmt.Sprintf("Can't add %s to existing dependecy %s", e.add, e.ex) | ||
| } | ||
|
|
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| type Dependencies struct { | ||
| d map[string]Dependency // import path to dependency | ||
| } | ||
|
|
||
| // check interfaces | ||
| var ( | ||
| _ fmt.Stringer = &Dependencies{} | ||
| _ json.Marshaler = &Dependencies{} | ||
| _ json.Unmarshaler = &Dependencies{} | ||
| ) | ||
|
|
||
| func NewDependencies() (deps *Dependencies) { | ||
| deps = new(Dependencies) | ||
| deps.Clear() | ||
| return | ||
| } | ||
|
|
||
| func (deps *Dependencies) String() string { | ||
| paths := deps.ImportPaths() | ||
| s := make([]string, len(paths)) | ||
| for i, path := range paths { | ||
| s[i] = deps.Get(path).String() | ||
| } | ||
| return strings.Join(s, ", ") | ||
| } | ||
|
|
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| func (deps *Dependencies) Clear() { | ||
| deps.d = make(map[string]Dependency) | ||
| } | ||
|
|
||
| func (deps *Dependencies) Add(d *Dependency) (err error) { | ||
| e := deps.Get(d.ImportPath) | ||
| if e == nil { | ||
| deps.d[d.ImportPath] = *d | ||
| return | ||
| } | ||
|
|
||
| e.parse() | ||
| e.parsed.majorMin = maxSection(e.parsed.majorMin, d.MajorMin()) | ||
| e.parsed.majorMax = minSection(e.parsed.majorMax, d.MajorMax()) | ||
| e.parsed.minorMin = maxSection(e.parsed.minorMin, d.MinorMin()) | ||
| e.parsed.minorMax = minSection(e.parsed.minorMax, d.MinorMax()) | ||
| e.parsed.patchMin = maxSection(e.parsed.patchMin, d.PatchMin()) | ||
| e.parsed.patchMax = minSection(e.parsed.patchMax, d.PatchMax()) | ||
|
|
||
| if !e.parsed.valid() { | ||
| err = &AddDependencyError{ex: deps.Get(d.ImportPath), add: d} | ||
| return | ||
| } | ||
|
|
||
| e.Version = e.parsed.String() | ||
| deps.d[d.ImportPath] = *e | ||
| return | ||
| } | ||
|
|
||
| func (deps *Dependencies) Get(importPath string) (dep *Dependency) { | ||
| d, ok := deps.d[importPath] | ||
| if ok { | ||
| dep = &d | ||
| } | ||
| return | ||
| } | ||
|
|
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| func (deps *Dependencies) ImportPaths() (paths []string) { | ||
| paths = make([]string, 0, len(deps.d)) | ||
| for i := range deps.d { | ||
| paths = append(paths, i) | ||
| } | ||
| sort.Strings(paths) | ||
| return | ||
| } | ||
|
|
||
| func (deps *Dependencies) MarshalJSON() (b []byte, err error) { | ||
| b = make([]byte, 0, 50*len(deps.d)) | ||
| b = append(b, '{') | ||
| for _, p := range deps.ImportPaths() { | ||
| d := deps.Get(p) | ||
| b = append(b, '"') | ||
| b = append(b, d.ImportPath...) | ||
| b = append(b, `":"`...) | ||
| b = append(b, d.Version...) | ||
| b = append(b, `",`...) | ||
| } | ||
| b[len(b)-1] = '}' | ||
| return | ||
| } | ||
|
|
||
| func (deps *Dependencies) UnmarshalJSON(b []byte) (err error) { | ||
| m := make(map[string]string) | ||
| err = json.Unmarshal(b, &m) | ||
| if err != nil { | ||
| return | ||
| } | ||
| deps.Clear() // also make | ||
| var d *Dependency | ||
| for p, v := range m { | ||
| d, err = NewDependency(p, v) | ||
| if err != nil { | ||
| return | ||
| } | ||
| err = deps.Add(d) | ||
| if err != nil { | ||
| return | ||
| } | ||
| } | ||
| return | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,28 @@ | ||
| package nut_test | ||
|
|
||
| import ( | ||
| . "." | ||
| . "launchpad.net/gocheck" | ||
| ) | ||
|
|
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| type Ds struct{} | ||
|
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| var _ = Suite(&Ds{}) | ||
|
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| func (*Ds) TestDependenciesAdd(c *C) { | ||
| deps := NewDependencies() | ||
| for _, v := range []string{"1.>=1.*", "1.>=2.*", "1.*.*"} { | ||
| dep, err := NewDependency("gonuts.io/debug/crazy", v) | ||
| c.Check(err, IsNil) | ||
| err = deps.Add(dep) | ||
| c.Check(err, IsNil) | ||
| } | ||
| c.Check(deps.Get("gonuts.io/debug/crazy").String(), Equals, "gonuts.io/debug/crazy (1.>=2.*)") | ||
|
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| dep, err := NewDependency("gonuts.io/debug/crazy", "2.*.*") | ||
| c.Check(err, IsNil) | ||
| err = deps.Add(dep) | ||
| c.Check(err, FitsTypeOf, &AddDependencyError{}) | ||
| c.Check(err.Error(), Equals, "Can't add gonuts.io/debug/crazy (2.*.*) to existing dependecy gonuts.io/debug/crazy (1.>=2.*)") | ||
| c.Check(deps.Get("gonuts.io/debug/crazy").String(), Equals, "gonuts.io/debug/crazy (1.>=2.*)") | ||
| } |
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