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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Run "make install" to build package.
package main
import (
"bytes"
"errors"
"go/build"
"path" // use for import paths
"strings"
"template"
)
// domake builds the package in dir.
// domake generates a standard Makefile and passes it
// to make on standard input.
func domake(dir, pkg string, tree *build.Tree, isCmd bool) (err error) {
makefile, err := makeMakefile(dir, pkg, tree, isCmd)
if err != nil {
return err
}
cmd := []string{"bash", "gomake", "-f-"}
if *nuke {
cmd = append(cmd, "nuke")
} else if *clean {
cmd = append(cmd, "clean")
}
cmd = append(cmd, "install")
return run(dir, makefile, cmd...)
}
// makeMakefile computes the standard Makefile for the directory dir
// installing as package pkg. It includes all *.go files in the directory
// except those in package main and those ending in _test.go.
func makeMakefile(dir, pkg string, tree *build.Tree, isCmd bool) ([]byte, error) {
if !safeName(pkg) {
return nil, errors.New("unsafe name: " + pkg)
}
targ := pkg
targDir := tree.PkgDir()
if isCmd {
// use the last part of the package name for targ
_, targ = path.Split(pkg)
targDir = tree.BinDir()
}
dirInfo, err := build.ScanDir(dir)
if err != nil {
return nil, err
}
cgoFiles := dirInfo.CgoFiles
isCgo := make(map[string]bool, len(cgoFiles))
for _, file := range cgoFiles {
if !safeName(file) {
return nil, errors.New("bad name: " + file)
}
isCgo[file] = true
}
goFiles := make([]string, 0, len(dirInfo.GoFiles))
for _, file := range dirInfo.GoFiles {
if !safeName(file) {
return nil, errors.New("unsafe name: " + file)
}
if !isCgo[file] {
goFiles = append(goFiles, file)
}
}
oFiles := make([]string, 0, len(dirInfo.CFiles)+len(dirInfo.SFiles))
cgoOFiles := make([]string, 0, len(dirInfo.CFiles))
for _, file := range dirInfo.CFiles {
if !safeName(file) {
return nil, errors.New("unsafe name: " + file)
}
// When cgo is in use, C files are compiled with gcc,
// otherwise they're compiled with gc.
if len(cgoFiles) > 0 {
cgoOFiles = append(cgoOFiles, file[:len(file)-2]+".o")
} else {
oFiles = append(oFiles, file[:len(file)-2]+".$O")
}
}
for _, file := range dirInfo.SFiles {
if !safeName(file) {
return nil, errors.New("unsafe name: " + file)
}
oFiles = append(oFiles, file[:len(file)-2]+".$O")
}
var imports []string
for _, t := range build.Path {
imports = append(imports, t.PkgDir())
}
var buf bytes.Buffer
md := makedata{targ, targDir, "pkg", goFiles, oFiles, cgoFiles, cgoOFiles, imports}
if isCmd {
md.Type = "cmd"
}
if err := makefileTemplate.Execute(&buf, &md); err != nil {
return nil, err
}
return buf.Bytes(), nil
}
var safeBytes = []byte("+-~./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz")
func safeName(s string) bool {
if s == "" {
return false
}
if strings.Contains(s, "..") {
return false
}
if s[0] == '~' {
return false
}
for i := 0; i < len(s); i++ {
if c := s[i]; c < 0x80 && bytes.IndexByte(safeBytes, c) < 0 {
return false
}
}
return true
}
// makedata is the data type for the makefileTemplate.
type makedata struct {
Targ string // build target
TargDir string // build target directory
Type string // build type: "pkg" or "cmd"
GoFiles []string // list of non-cgo .go files
OFiles []string // list of .$O files
CgoFiles []string // list of cgo .go files
CgoOFiles []string // list of cgo .o files, without extension
Imports []string // gc/ld import paths
}
var makefileTemplate = template.Must(template.New("Makefile").Parse(`
include $(GOROOT)/src/Make.inc
TARG={{.Targ}}
TARGDIR={{.TargDir}}
{{with .GoFiles}}
GOFILES=\
{{range .}} {{.}}\
{{end}}
{{end}}
{{with .OFiles}}
OFILES=\
{{range .}} {{.}}\
{{end}}
{{end}}
{{with .CgoFiles}}
CGOFILES=\
{{range .}} {{.}}\
{{end}}
{{end}}
{{with .CgoOFiles}}
CGO_OFILES=\
{{range .}} {{.}}\
{{end}}
{{end}}
GCIMPORTS={{range .Imports}}-I "{{.}}" {{end}}
LDIMPORTS={{range .Imports}}-L "{{.}}" {{end}}
include $(GOROOT)/src/Make.{{.Type}}
`))
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