Package descriptor provides command descriptor utilities.



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    func AbsCmdPath

    func AbsCmdPath(setup *pb.CmdDescriptor_Setup) (string, error)

      AbsCmdPath returns absolute command path of the setup.

      func ClangClTarget

      func ClangClTarget(out []byte) (string, error)

        ClangClTarget returns clang target from output of `clang-cl.exe -###` See ClangClVersion about the expected input.

        func ClangClVersion

        func ClangClVersion(out []byte) (string, error)

          ClangClVersion returns clang version from output of `clang-cl.exe -###`.

          `clang-cl -###` output is like the following:

          clang version 3.5.0 (trunk 225621)
          Target: i686-pc-windows-msvc
          clang version 6.0.0 (trunk 308728)
          Target: x86_64-pc-windows-msvc
          clang version 9.0.0 ( 67510fac36d27b2e22c7cd955fc167136b737b93)
          Target: x86_64-pc-windows-msvc
          Thread model: posix
          InstalledDir: /var/tmp/clang/third_party/llvm-build/Release+Asserts/bin

          Note that endline might be CRLF.

          func ClexeTarget

          func ClexeTarget(out []byte) (string, error)

            ClexeTarget returns target string of CL.exe.

            func ClexeVersion

            func ClexeVersion(out []byte) (string, error)

              ClexeVersion returns version string of CL.exe.

              func DartAnalyzerVersion

              func DartAnalyzerVersion(out []byte) (string, error)

                DartAnalyzerVersion returns the dartanalyzer's version from output of `dartanalyzer --version`

                func IsRelocatable

                func IsRelocatable(setup *pb.CmdDescriptor_Setup) (bool, error)

                  IsRelocatable returns true if this setup can be relocated to where client put a compiler or a subprogram. setup must have valid path type.

                  func JavaVersion

                  func JavaVersion(out []byte) (string, error)

                    JavaVersion returns version string of javac.

                    func Load

                    func Load(dir string) ([]*pb.CmdDescriptor, error)

                    func Relocate

                    func Relocate(setup *pb.CmdDescriptor_Setup, cmdpath string) (*pb.CmdDescriptor_Setup, error)

                      Relocate relocates cmdpath and setup files.

                      func RelocateCmd

                      func RelocateCmd(cmdPath string, setup *pb.CmdDescriptor_Setup, subprogSetups map[string]*pb.CmdDescriptor_Setup) ([]*pb.FileSpec, error)

                        RelocateCmd relocates main program and subprograms if necessary. subprogSetups is a map from subprogram client path to subprogram setup. It returns commands' FileSpec to be used. Actual command path will be first FileSpec's Path.

                        func Save

                        func Save(dir string, desc *pb.CmdDescriptor) error

                          Save saves given cmd descriptor to a file in dir.

                          func Target

                          func Target(out []byte) string

                            Target returns target field of command spec/selector from -dumpmachine output.

                            func Version

                            func Version(dout, vout []byte) string

                              Version returns version field for command spec/selector from -dumpversion output and --version output.


                              type Config

                              type Config struct {
                              	Key                    string // Key used for selection.
                              	Filename               string // relative to pwd (prefix) in server path
                              	AbsoluteBinaryHashFrom string // use Filename for binary hash if emtpy
                              	Target                 string // cross target if specified
                              	Runner       Runner
                              	ToClientPath func(string) (string, error)
                              	PathType     pb.CmdDescriptor_PathType
                              	// compiler specific
                              	ClangNeedTarget bool // true if -target is needed.

                                Config used for setting up cmd descriptor.

                                type Descriptor

                                type Descriptor struct {
                                	Runner       Runner
                                	ToClientPath func(string) (string, error)
                                	PathType     pb.CmdDescriptor_PathType
                                	// contains filtered or unexported fields

                                  Descriptor represents a command descriptor.

                                  func New

                                  func New(c Config) (*Descriptor, error)

                                    New creates cmd descriptor for c.

                                    func (*Descriptor) Add

                                    func (d *Descriptor) Add(fname string) error

                                      Add adds fname for command. fname should be absolute path, or relative to cwd. It will emit relative path to command if cmd is relocatable. It just adds fname as is. i.e. not resolve symlink, resolve shared obj etc.

                                      func (*Descriptor) CmdSetup

                                      func (d *Descriptor) CmdSetup() error

                                        CmdSetup sets up command descriptor.

                                        type FilePath

                                        type FilePath interface {
                                        	// IsAbs reports whether the path is absolute.
                                        	IsAbs(path string) bool
                                        	// Base returns the last element of path, typically
                                        	// the filename.
                                        	Base(string) string
                                        	// Dir returns all but the last element of path, typically
                                        	// the path's directory.
                                        	// Different filepath.Dir, it won't clean "..".
                                        	Dir(string) string
                                        	// Join joins any number of path elements into a single path.
                                        	// Different filepath.Dir, it won't clean "..".
                                        	Join(...string) string
                                        	// Rel returns a relative path that is lexically equivalent
                                        	// to targpath when joined to basepath with an intervening separator.
                                        	Rel(basepath, targpath string) (string, error)
                                        	// Clean returns the shortest path name equivalent to path by purely lexical processing.
                                        	Clean(path string) string
                                        	// SplitElem splits path by path separator.
                                        	SplitElem(path string) []string
                                        	// PathSep returns the path separator.
                                        	PathSep() string

                                          FilePath provides client's filepath.

                                          func FilePathOf

                                          func FilePathOf(pt pb.CmdDescriptor_PathType) (FilePath, error)

                                            FilePathOf returns FilePath of path type.

                                            type Runner

                                            type Runner func(cmds ...string) ([]byte, error)

                                              Runner runs command and get combined output.


                                              Path Synopsis
                                              Package posixpath handles posix-path (Unix style; slash separeted path).
                                              Package posixpath handles posix-path (Unix style; slash separeted path).
                                              Package winpath handles windows-path (backslash separated path).
                                              Package winpath handles windows-path (backslash separated path).