Merge pull request #3 from psampaz/invalid_updates

Check for invalid updates + internal packages

CHANGELOG.md

@@ -3,6 +3,13 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
+## [0.2.0] - 2019-04-22
+### Added
+- Extra column 'VALID TIMESTAMPS' which indicates if the timestamp of the new version is
+actually newer that the current one 
+### Changed
+- Packages are now internal
+
 ## [0.1.0] - 2019-04-22
 ### Added
 - Initial release

internal/mod/mod.go

@@ -0,0 +1,105 @@
+package mod
+
+import (
+	"time"
+)
+
+// Module holds information about a specifc module listed by go list
+type Module struct {
+	Path      string       `json:",omitempty"` // module path
+	Version   string       `json:",omitempty"` // module version
+	Versions  []string     `json:",omitempty"` // available module versions
+	Replace   *Module      `json:",omitempty"` // replaced by this module
+	Time      *time.Time   `json:",omitempty"` // time version was created
+	Update    *Module      `json:",omitempty"` // available update (with -u)
+	Main      bool         `json:",omitempty"` // is this the main module?
+	Indirect  bool         `json:",omitempty"` // module is only indirectly needed by main module
+	Dir       string       `json:",omitempty"` // directory holding local copy of files, if any
+	GoMod     string       `json:",omitempty"` // path to go.mod file describing module, if any
+	Error     *ModuleError `json:",omitempty"` // error loading module
+	GoVersion string       `json:",omitempty"` // go version used in module
+}
+
+type ModuleError struct {
+	Err string // error text
+}
+
+// InvalidTimestamp checks if the version reported as update by the go list command is actually newer that current version
+func (m *Module) InvalidTimestamp() bool {
+	var mod Module
+	if m.Replace != nil {
+		mod = *m.Replace
+	} else {
+		mod = *m
+	}
+
+	if mod.Time != nil && mod.Update != nil {
+		return mod.Time.After(*mod.Update.Time)
+	}
+
+	return false
+}
+
+// CurrentVersion returns the current version of the module taking into consideration the any Replace settings
+func (m *Module) CurrentVersion() string {
+	var mod Module
+	if m.Replace != nil {
+		mod = *m.Replace
+
+	} else {
+		mod = *m
+	}
+
+	return mod.Version
+}
+
+// HasUpdate checks if the module has a new version
+func (m *Module) HasUpdate() bool {
+	var mod Module
+	if m.Replace != nil {
+		mod = *m.Replace
+	} else {
+		mod = *m
+	}
+
+	return mod.Update != nil
+}
+
+// New Version returns the version of the update taking into consideration the any Replace settings
+func (m *Module) NewVersion() string {
+	var mod Module
+	if m.Replace != nil {
+		mod = *m.Replace
+	} else {
+		mod = *m
+	}
+
+	if mod.Update == nil {
+		return ""
+	}
+
+	return mod.Update.Version
+}
+
+// FilterModules filters the list of modules provided by the go list command
+func FilterModules(modules []Module, hasUpdate, isDirect bool) []Module {
+	out := make([]Module, 0)
+	for k := range modules {
+
+		if modules[k].Main {
+			continue
+		}
+
+		if hasUpdate && modules[k].Update == nil {
+			continue
+		}
+
+		if isDirect && modules[k].Indirect {
+			continue
+		}
+
+		out = append(out, modules[k])
+	}
+
+	return out
+}