package cmd import ( "os" "path/filepath" "strings" ) // Project contains name, license and paths to projects. type Project struct { absPath string cmdPath string srcPath string license License name string } // NewProject returns Project with specified project name. // If projectName is blank string, it returns nil. func NewProject(projectName string) *Project { if projectName == "" { return nil } p := new(Project) p.name = projectName // 1. Find already created protect. p.absPath = findPackage(projectName) // 2. If there are no created project with this path, and user is in GOPATH, // then use GOPATH/src/projectName. if p.absPath == "" { wd, err := os.Getwd() if err != nil { er(err) } for _, srcPath := range srcPaths { goPath := filepath.Dir(srcPath) if filepath.HasPrefix(wd, goPath) { p.absPath = filepath.Join(srcPath, projectName) break } } } // 3. If user is not in GOPATH, then use (first GOPATH)/src/projectName. if p.absPath == "" { p.absPath = filepath.Join(srcPaths[0], projectName) } return p } // findPackage returns full path to existing go package in GOPATHs. // findPackage returns "", if it can't find path. // If packageName is "", findPackage returns "". func findPackage(packageName string) string { if packageName == "" { return "" } for _, srcPath := range srcPaths { packagePath := filepath.Join(srcPath, packageName) if exists(packagePath) { return packagePath } } return "" } // NewProjectFromPath returns Project with specified absolute path to // package. // If absPath is blank string or if absPath is not actually absolute, // it returns nil. func NewProjectFromPath(absPath string) *Project { if absPath == "" || !filepath.IsAbs(absPath) { return nil } p := new(Project) p.absPath = absPath p.absPath = strings.TrimSuffix(p.absPath, findCmdDir(p.absPath)) p.name = filepath.ToSlash(trimSrcPath(p.absPath, p.SrcPath())) return p } // trimSrcPath trims at the beginning of absPath the srcPath. func trimSrcPath(absPath, srcPath string) string { relPath, err := filepath.Rel(srcPath, absPath) if err != nil { er("Cobra supports project only within $GOPATH") } return relPath } // License returns the License object of project. func (p *Project) License() License { if p.license.Text == "" && p.license.Name != "None" { p.license = getLicense() } return p.license } // Name returns the name of project, e.g. "github.com/spf13/cobra" func (p Project) Name() string { return p.name } // CmdPath returns absolute path to directory, where all commands are located. // // CmdPath returns blank string, only if p.AbsPath() is a blank string. func (p *Project) CmdPath() string { if p.absPath == "" { return "" } if p.cmdPath == "" { p.cmdPath = filepath.Join(p.absPath, findCmdDir(p.absPath)) } return p.cmdPath } // findCmdDir checks if base of absPath is cmd dir and returns it or // looks for existing cmd dir in absPath. // If the cmd dir doesn't exist, empty, or cannot be found, // it returns "cmd". func findCmdDir(absPath string) string { if !exists(absPath) || isEmpty(absPath) { return "cmd" } if isCmdDir(absPath) { return filepath.Base(absPath) } files, _ := filepath.Glob(filepath.Join(absPath, "c*")) for _, file := range files { if isCmdDir(file) { return file } } return "cmd" } // isCmdDir checks if base of name is one of cmdDir. func isCmdDir(name string) bool { name = filepath.Base(name) for _, cmdDir := range cmdDirs { if name == cmdDir { return true } } return false } // AbsPath returns absolute path of project. func (p Project) AbsPath() string { return p.absPath } // SrcPath returns absolute path to $GOPATH/src where project is located. func (p *Project) SrcPath() string { if p.srcPath != "" { return p.srcPath } if p.absPath == "" { p.srcPath = srcPaths[0] return p.srcPath } for _, srcPath := range srcPaths { if strings.HasPrefix(p.absPath, srcPath) { p.srcPath = srcPath break } } return p.srcPath }