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The latest major version is .

Published: Aug 30, 2020 | License: BSD-3-Clause | Module:



var ErrNoGo = fmt.Errorf("no Go source files")
var KnownArch = make(map[string]bool)
var KnownOS = make(map[string]bool)

func MatchFile

func MatchFile(name string, tags map[string]bool) bool

MatchFile returns false if the name contains a $GOOS or $GOARCH suffix which does not match the current system. The recognized name formats are:


An exception: if GOOS=android, then files with GOOS=linux are also matched.

If tags["*"] is true, then MatchFile will consider all possible GOOS and GOARCH to be available and will consequently always return true.

func ReadComments

func ReadComments(f io.Reader) ([]byte, error)

ReadComments is like ioutil.ReadAll, except that it only reads the leading block of comments in the file.

func ReadImports

func ReadImports(f io.Reader, reportSyntaxError bool, imports *[]string) ([]byte, error)

ReadImports is like ioutil.ReadAll, except that it expects a Go file as input and stops reading the input once the imports have completed.

func ScanDir

func ScanDir(dir string, tags map[string]bool) ([]string, []string, error)

func ScanFiles

func ScanFiles(files []string, tags map[string]bool) ([]string, []string, error)

func ShouldBuild

func ShouldBuild(content []byte, tags map[string]bool) bool

ShouldBuild reports whether it is okay to use this file, The rule is that in the file's leading run of // comments and blank lines, which must be followed by a blank line (to avoid including a Go package clause doc comment), lines beginning with '// +build' are taken as build directives.

The file is accepted only if each such line lists something matching the file. For example:

// +build windows linux

marks the file as applicable only on Windows and Linux.

If tags["*"] is true, then ShouldBuild will consider every build tag except "ignore" to be both true and false for the purpose of satisfying build tags, in order to estimate (conservatively) whether a file could ever possibly be used in any build.

Documentation was rendered with GOOS=linux and GOARCH=amd64.

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