forked from mattn/encore-cmd
/
main.go
356 lines (276 loc) · 6.06 KB
/
main.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
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
//License: MIT
//Author: Gani Mendoza (itjumpstart.wordpress.com)
package main
import (
"bufio"
"errors"
"fmt"
"github.com/daviddengcn/go-colortext"
anko_core "github.com/mattn/anko/builtins"
anko_encoding "github.com/mattn/anko/builtins/encoding"
anko_flag "github.com/mattn/anko/builtins/flag"
anko_io "github.com/mattn/anko/builtins/io"
anko_math "github.com/mattn/anko/builtins/math"
anko_net "github.com/mattn/anko/builtins/net"
anko_os "github.com/mattn/anko/builtins/os"
anko_path "github.com/mattn/anko/builtins/path"
anko_regexp "github.com/mattn/anko/builtins/regexp"
anko_sort "github.com/mattn/anko/builtins/sort"
anko_strings "github.com/mattn/anko/builtins/strings"
anko_term "github.com/mattn/anko/builtins/term"
"github.com/mattn/anko/parser"
"github.com/mattn/anko/vm"
"log"
"os"
"os/exec"
"runtime"
"strings"
)
func printError(err error) {
if err != nil {
ct.ChangeColor(ct.Red, false, ct.None, false)
os.Stderr.WriteString(fmt.Sprintf("==> ERROR: %s\n", err.Error()))
ct.ResetColor()
}
}
func printOutput(outs []byte) {
if len(outs) > 0 {
ct.ChangeColor(ct.Green, false, ct.None, false)
fmt.Printf("==> OUTPUT: %s\n", string(outs))
ct.ResetColor()
}
}
func runCmd(args string) error {
fmt.Println(args)
splitSpace := strings.Split(args, " ")
//based on hashicorp serf
var shell, flag string
if runtime.GOOS == "windows" {
shell = "cmd"
flag = "/C"
} else {
shell = "/bin/sh"
flag = "-c"
}
var err error
switch splitSpace[0] {
case "mkdir":
dir := splitSpace[1]
//make dir only if not existing
if _, err := os.Stat(dir); os.IsNotExist(err) {
cmd := exec.Command(shell, flag, args)
output, err := cmd.CombinedOutput()
printError(err)
printOutput(output)
}
default:
cmd := exec.Command(shell, flag, args)
output, err := cmd.CombinedOutput()
printError(err)
printOutput(output)
}
return err
}
func chdirCmd(dir string) error {
fmt.Println("chdir " + dir)
err := os.Chdir(dir)
if err != nil {
printError(err)
} else {
printOutput([]byte("chdir to " + dir))
}
return err
}
func getenvCmd(key string) error {
fmt.Println("getenv " + key)
result := os.Getenv(key)
if len(result) == 0 {
err := errors.New("No environment variable named " + key)
printError(err)
return err
} else {
printOutput([]byte("getenv " + key + "=" + result))
return nil
}
}
func setenvCmd(key, value string) error {
if key == "" || value == "" {
return errors.New("Error in ENV. Key or value is blank")
}
fmt.Println("ENV " + key + " " + value)
err := os.Setenv(key, value)
if err != nil {
printError(err)
return err
} else {
printOutput([]byte("ENV " + key + "=" + value))
return nil
}
}
func hostenvCmd(key string) error {
fmt.Println("hostenv " + key)
slc := os.Environ()
found := false
for _, v := range slc {
//fmt.Println(slc[k])
pair := strings.Split(v, "=")
if pair[0] == key {
printOutput([]byte("hostenv: " + key + "=" + v))
found = true
break
}
}
if !found {
err := errors.New("No host environment variable named " + key)
printError(err)
return err
} else {
return nil
}
}
func goCmd(argCommand string, args []string) error {
var err error
switch argCommand {
case "chdir":
if len(args) != 1 {
err = errors.New("GO chdir. Directory not specified")
printError(err)
return err
} else {
err = chdirCmd(args[0])
}
case "getenv":
if len(args) != 1 {
err = errors.New("GO getenv. Key is blank")
printError(err)
return err
} else {
err = getenvCmd(args[0])
}
case "hostenv":
if len(args) != 1 {
err = errors.New("GO setenv. Key is blank")
printError(err)
return err
} else {
err = hostenvCmd(args[0])
}
case "hostname":
var str string
str, err = os.Hostname()
if err != nil {
printError(err)
return err
} else {
printOutput([]byte("hostname: " + str))
}
}
return err
}
func ankoCmd(filename string) error {
fmt.Println("ANKO " + filename)
if len(filename) == 0 {
err := errors.New("Please specify an Anko script file")
printError(err)
return err
}
file, err := os.Open(filename)
if err != nil {
printError(err)
return err
}
env := vm.NewEnv()
anko_core.Import(env)
anko_flag.Import(env)
anko_net.Import(env)
anko_encoding.Import(env)
anko_os.Import(env)
anko_io.Import(env)
anko_math.Import(env)
anko_path.Import(env)
anko_regexp.Import(env)
anko_sort.Import(env)
anko_strings.Import(env)
anko_term.Import(env)
var ln, code string
lnScanner := bufio.NewScanner(file)
for lnScanner.Scan() {
ln = lnScanner.Text()
code = code + ln + "\n"
if err != nil {
break
printError(err)
return err
}
}
scanner := new(parser.Scanner)
scanner.Init(code)
stmts, err := parser.Parse(scanner)
if err != nil {
printError(err)
return err
}
_, err = vm.Run(stmts, env)
if err != nil {
printError(err)
return err
}
file.Close()
return err
}
func processCmd(command string) error {
var err error
s := strings.TrimSpace(command)
slcStr := strings.Split(s, " ")
args := []string{}
var argCommand string
cmd := strings.ToUpper(slcStr[0])
if !strings.Contains(cmd, "FROM") || !strings.Contains(cmd, "MAINTAINER") {
fmt.Println(cmd)
}
for i, _ := range slcStr {
if i == 1 {
argCommand = slcStr[i]
} else if i > 1 {
args = append(args, slcStr[i])
}
}
switch cmd {
case "RUN":
err = runCmd(strings.Join(slcStr[1:], " "))
case "GO":
err = goCmd(argCommand, args)
case "ENV":
err = setenvCmd(argCommand, args[0])
case "ANKO":
ankoFilename := argCommand
err = ankoCmd(ankoFilename)
}
return err
}
func main() {
if len(os.Args) != 2 {
printError(errors.New("Please specify a cmdfile"))
os.Exit(1)
}
file, err := os.Open(os.Args[1])
defer file.Close()
if err != nil {
printError(err)
log.Fatal(err)
}
var ln string
scanner := bufio.NewScanner(file)
for scanner.Scan() {
ln = scanner.Text()
if !strings.Contains(ln, "#") {
err = processCmd(ln)
}
if err != nil {
break
log.Fatal(err)
}
}
fmt.Println("If any error appears, cmdfile is not completed. Press ENTER to exit")
fmt.Scanln()
}