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
|
module.exports = exec
exec.spawn = spawn
exec.pipe = pipe
var log = require("../utils/log")
, child_process = require("child_process")
, sys = require("sys")
function exec (cmd, args, env, takeOver, cb) {
if (!cb) cb = takeOver, takeOver = true
if (!cb) cb = env, env = process.env
log.verbose(cmd+" "+args.map(JSON.stringify).join(" "), "exec")
var stdout = ""
, stderr = ""
, cp = spawn(cmd, args, env, takeOver)
cp.stdout && cp.stdout.on("data", function (chunk) {
if (chunk) stdout += chunk
})
cp.stderr && cp.stderr.on("data", function (chunk) {
if (chunk) stderr += chunk
})
cp.on("exit", function (code) {
if (code) cb(new Error("`"+cmd+"` failed with "+code))
else cb(null, code, stdout, stderr)
})
return cp
}
function logger (d) { if (d) process.binding("stdio").writeError(d+"") }
function pipe (cp1, cp2, cb) {
sys.pump(cp1.stdout, cp2.stdin)
var errState = null
if (log.level <= log.LEVEL.silly) {
cp1.stderr.on("data", logger)
cp2.stderr.on("data", logger)
}
cp1.on("exit", function (code) {
if (!code) return log.verbose(cp2.name || "<unknown>", "success")
cp2.kill()
cb(errState = new Error(
"Failed "+(cp1.name || "<unknown>")+"\nexited with "+code))
})
cp2.on("exit", function (code) {
if (errState) return
if (!code) return log.verbose(cp1.name || "<unknown>", "success", cb)
cb(new Error( "Failed "+(cp2.name || "<unknown>")+"\nexited with "+code))
})
}
function spawn (c, a, env, takeOver) {
var stdio = process.binding("stdio")
, fds = [ stdio.stdinFD || 0
, stdio.stdoutFD || 1
, stdio.stderrFD || 2
]
, cp = child_process.spawn( c
, a
, env
, takeOver ? fds : null
)
cp.name = c +" "+ a.map(JSON.stringify).join(" ")
return cp
}
|
