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|
package cmd
import (
"os"
"path/filepath"
"runtime"
"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.
func NewProject(projectName string) *Project {
if projectName == "" {
er("can't create project with blank name")
}
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 filepathHasPrefix(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.
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.
func NewProjectFromPath(absPath string) *Project {
if absPath == "" {
er("can't create project: absPath can't be blank")
}
if !filepath.IsAbs(absPath) {
er("can't create project: absPath is not absolute")
}
// If absPath is symlink, use its destination.
fi, err := os.Lstat(absPath)
if err != nil {
er("can't read path info: " + err.Error())
}
if fi.Mode()&os.ModeSymlink != 0 {
path, err := os.Readlink(absPath)
if err != nil {
er("can't read the destination of symlink: " + err.Error())
}
absPath = path
}
p := new(Project)
p.absPath = strings.TrimSuffix(absPath, findCmdDir(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(err)
}
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.
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.
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 filepath.Base(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 []string{"cmd", "cmds", "command", "commands"} {
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 filepathHasPrefix(p.absPath, srcPath) {
p.srcPath = srcPath
break
}
}
return p.srcPath
}
func filepathHasPrefix(path string, prefix string) bool {
if len(path) <= len(prefix) {
return false
}
if runtime.GOOS == "windows" {
// Paths in windows are case-insensitive.
return strings.EqualFold(path[0:len(prefix)], prefix)
}
return path[0:len(prefix)] == prefix
}
|
