/
util.go
216 lines (192 loc) · 6.1 KB
/
util.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
// Modifications Copyright 2018 The klaytn Authors
// Copyright 2016 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
//
// This file is derived from internal/build/util.go (2018/06/04).
// Modified and improved for the klaytn development.
package build
import (
"bytes"
"flag"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"os/exec"
"path"
"path/filepath"
"runtime"
"strings"
"text/template"
)
var DryRunFlag = flag.Bool("n", false, "dry run, don't execute commands")
// TryRun executes the given command and returns an error if error occurs.
func TryRun(cmd *exec.Cmd) error {
fmt.Println(">>>", strings.Join(cmd.Args, " "))
if !*DryRunFlag {
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
return cmd.Run()
}
return nil
}
// TryRunCommand executes the given command and arguments in strings.
func TryRunCommand(cmd string, args ...string) {
TryRun(exec.Command(cmd, args...))
}
// MustRun executes the given command and exits the host process for
// any error.
func MustRun(cmd *exec.Cmd) {
if err := TryRun(cmd); err != nil {
log.Fatal(err)
}
}
func MustRunCommand(cmd string, args ...string) {
MustRun(exec.Command(cmd, args...))
}
// GOPATH returns the value that the GOPATH environment
// variable should be set to.
func GOPATH() string {
if os.Getenv("GOPATH") == "" {
log.Fatal("GOPATH is not set")
}
return os.Getenv("GOPATH")
}
// VERSION returns the content of the VERSION file.
func VERSION() string {
version, err := ioutil.ReadFile("VERSION")
if err != nil {
log.Fatal(err)
}
return string(bytes.TrimSpace(version))
}
var warnedAboutGit bool
// RunGit runs a git subcommand and returns its output.
// The command must complete successfully.
func RunGit(args ...string) string {
cmd := exec.Command("git", args...)
var stdout, stderr bytes.Buffer
cmd.Stdout, cmd.Stderr = &stdout, &stderr
if err := cmd.Run(); err == exec.ErrNotFound {
if !warnedAboutGit {
log.Println("Warning: can't find 'git' in PATH")
warnedAboutGit = true
}
return ""
} else if err != nil {
log.Fatal(strings.Join(cmd.Args, " "), ": ", err, "\n", stderr.String())
}
return strings.TrimSpace(stdout.String())
}
// readGitFile returns content of file in .git directory.
func readGitFile(file string) string {
content, err := ioutil.ReadFile(path.Join(".git", file))
if err != nil {
return ""
}
return strings.TrimSpace(string(content))
}
// Render renders the given template file into outputFile.
func Render(templateFile, outputFile string, outputPerm os.FileMode, x interface{}) {
tpl := template.Must(template.ParseFiles(templateFile))
render(tpl, outputFile, outputPerm, x)
}
// RenderString renders the given template string into outputFile.
func RenderString(templateContent, outputFile string, outputPerm os.FileMode, x interface{}) {
tpl := template.Must(template.New("").Parse(templateContent))
render(tpl, outputFile, outputPerm, x)
}
func render(tpl *template.Template, outputFile string, outputPerm os.FileMode, x interface{}) {
if err := os.MkdirAll(filepath.Dir(outputFile), 0755); err != nil {
log.Fatal(err)
}
out, err := os.OpenFile(outputFile, os.O_CREATE|os.O_WRONLY|os.O_EXCL, outputPerm)
if err != nil {
log.Fatal(err)
}
if err := tpl.Execute(out, x); err != nil {
log.Fatal(err)
}
if err := out.Close(); err != nil {
log.Fatal(err)
}
}
// CopyFile copies a file.
func CopyFile(dst, src string, mode os.FileMode) {
if err := os.MkdirAll(filepath.Dir(dst), 0755); err != nil {
log.Fatal(err)
}
destFile, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, mode)
if err != nil {
log.Fatal(err)
}
defer destFile.Close()
srcFile, err := os.Open(src)
if err != nil {
log.Fatal(err)
}
defer srcFile.Close()
if _, err := io.Copy(destFile, srcFile); err != nil {
log.Fatal(err)
}
}
// GoTool returns the command that runs a go tool. This uses go from GOROOT instead of PATH
// so that go commands executed by build use the same version of Go as the 'host' that runs
// build code. e.g.
//
// /usr/lib/go-1.8/bin/go run build/ci.go ...
//
// runs using go 1.8 and invokes go 1.8 tools from the same GOROOT. This is also important
// because runtime.Version checks on the host should match the tools that are run.
func GoTool(tool string, args ...string) *exec.Cmd {
args = append([]string{tool}, args...)
return exec.Command(filepath.Join(runtime.GOROOT(), "bin", "go"), args...)
}
// ExpandPackages expands a packages list if an input contains "...".
func ExpandPackages(packages []string) []string {
for _, pkg := range packages {
if strings.Contains(pkg, "...") {
var newPkgs []string
cmd := GoTool("list", packages...)
out, err := cmd.Output()
if err != nil {
log.Fatalf("package listing failed: %v\n%s", err, string(out))
}
for _, line := range strings.Split(string(out), "\n") {
newPkgs = append(newPkgs, strings.TrimSpace(line))
}
return newPkgs
}
}
return packages
}
// ExcludePackages excludes packages having patterns from the passed package slice and
// returns a slice including only the remained packages.
func ExcludePackages(packages []string, patterns []string) []string {
// TODO-Klaytn This exclusion code is a naive implementation. Improve this if it hurts build performance.
packages = ExpandPackages(packages)
for _, pattern := range patterns {
var newPkgs []string
for _, pkg := range packages {
if !strings.Contains(pkg, pattern) {
newPkgs = append(newPkgs, pkg)
}
}
packages = newPkgs
}
return packages
}