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zagginozaggino
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add executableExists method to ProcessUtils
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7 files changed

+252
-4
lines changed

7 files changed

+252
-4
lines changed

‎src/domains/processUtils-test.js

+48-3
Original file line numberDiff line numberDiff line change
@@ -1,12 +1,57 @@
11
var ProcessUtils = require("./ProcessUtils");
2-
var pid = 5064;
32

3+
/*
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var pid = 5064;
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ProcessUtils.getChildrenOfPid(pid, function (err, children) {
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console.log(children);
6-
/*
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children.push(pid);
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children.forEach(function (pid) {
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ProcessUtils.killSingleProcess(pid);
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});
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*/
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});
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*/
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[
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"git",
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"C:\\Program Files (x86)\\Git\\cmd\\git.exe",
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"C:/Program Files (x86)/Git/cmd/git.exe",
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"C:/Program Files (x86)/Git/cmd/git2.exe",
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"C:/Program Files (x86)/Git/cmd/",
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"C:/Program Files (x86)/Git/cmd"
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].forEach(function (path) {
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ProcessUtils.executableExists(path, function (err, exists, resolvedPath) {
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console.log("ProcessUtils.executableExists for: " + path);
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console.log(" - exists: " + exists);
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console.log(" - resolvedPath: " + resolvedPath);
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});
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});
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/*
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ProcessUtils.executableExists("git", function (err, result, resolvedPath) {
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console.log("git");
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console.log(result);
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});
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ProcessUtils.executableExists("C:\\Program Files (x86)\\Git\\cmd\\git.exe", function (err, result) {
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console.log("result for C:\\Program Files (x86)\\Git\\cmd\\git.exe");
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console.log(result);
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});
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ProcessUtils.executableExists("C:/Program Files (x86)/Git/cmd/git.exe", function (err, result) {
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console.log("result for C:/Program Files (x86)/Git/cmd/git.exe");
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console.log(result);
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});
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ProcessUtils.executableExists("C:/Program Files (x86)/Git/cmd/git2.exe", function (err, result) {
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console.log("result for C:/Program Files (x86)/Git/cmd/git2.exe");
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console.log(result);
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});
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ProcessUtils.executableExists("C:/Program Files (x86)/Git/cmd/", function (err, result) {
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console.log("result for C:/Program Files (x86)/Git/cmd/");
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console.log(result);
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});
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ProcessUtils.executableExists("C:/Program Files (x86)/Git/cmd", function (err, result) {
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console.log("result for C:/Program Files (x86)/Git/cmd");
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console.log(result);
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});
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*/

‎src/domains/processUtils.js

+28-1
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,8 @@
1-
var exec = require("child_process").exec;
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var exec = require("child_process").exec,
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fs = require("fs"),
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Path = require("path"),
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which = require("../../thirdparty/which");
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26
var isWin = /^win/.test(process.platform);
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var noop = function () {};
48

@@ -79,5 +83,28 @@ function getChildrenOfPid(pid, callback) {
7983
}
8084
}
8185

86+
function executableExists(filename, dir, callback) {
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if (typeof dir === "function") { callback = dir; dir = ""; }
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which(filename, function (err, path) {
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if (err) {
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return callback(err, false);
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}
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path = Path.normalize(path);
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fs.stat(path, function (err, stats) {
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if (err) {
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return callback(err, false);
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}
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var exists = stats.isFile();
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if (!exists) { path = undefined; }
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return callback(null, exists, path);
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});
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});
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}
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82108
exports.getChildrenOfPid = getChildrenOfPid;
83109
exports.killSingleProcess = killSingleProcess;
110+
exports.executableExists = executableExists;

‎thirdparty/which/LICENSE

+23
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,23 @@
1+
Copyright 2009, 2010, 2011 Isaac Z. Schlueter.
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All rights reserved.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use,
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copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following
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conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
18+
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
20+
HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21+
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23+
OTHER DEALINGS IN THE SOFTWARE.

‎thirdparty/which/README.md

+5
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@@ -0,0 +1,5 @@
1+
The "which" util from npm's guts.
2+
3+
Finds the first instance of a specified executable in the PATH
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environment variable. Does not cache the results, so `hash -r` is not
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needed when the PATH changes.

‎thirdparty/which/bin/which

+14
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,14 @@
1+
#!/usr/bin/env node
2+
var which = require("../")
3+
if (process.argv.length < 3) {
4+
console.error("Usage: which <thing>")
5+
process.exit(1)
6+
}
7+
8+
which(process.argv[2], function (er, thing) {
9+
if (er) {
10+
console.error(er.message)
11+
process.exit(er.errno || 127)
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}
13+
console.log(thing)
14+
})

‎thirdparty/which/package.json

+30
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,30 @@
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{
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"author": {
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"name": "Isaac Z. Schlueter",
4+
"email": "[email protected]",
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"url": "http://blog.izs.me"
6+
},
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"name": "which",
8+
"description": "Like which(1) unix command. Find the first instance of an executable in the PATH.",
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"version": "1.0.5",
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"repository": {
11+
"type": "git",
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"url": "git://github.com/isaacs/node-which.git"
13+
},
14+
"main": "which.js",
15+
"bin": {
16+
"which": "./bin/which"
17+
},
18+
"engines": {
19+
"node": "*"
20+
},
21+
"dependencies": {},
22+
"devDependencies": {},
23+
"bugs": {
24+
"url": "https://github.com/isaacs/node-which/issues"
25+
},
26+
"readme": "ERROR: No README data found!",
27+
"homepage": "https://github.com/isaacs/node-which",
28+
"_id": "[email protected]",
29+
"_from": "which@"
30+
}

‎thirdparty/which/which.js

+104
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,104 @@
1+
module.exports = which
2+
which.sync = whichSync
3+
4+
var path = require("path")
5+
, fs
6+
, COLON = process.platform === "win32" ? ";" : ":"
7+
, isExe
8+
9+
try {
10+
fs = require("graceful-fs")
11+
} catch (ex) {
12+
fs = require("fs")
13+
}
14+
15+
if (process.platform == "win32") {
16+
// On windows, there is no good way to check that a file is executable
17+
isExe = function isExe () { return true }
18+
} else {
19+
isExe = function isExe (mod, uid, gid) {
20+
//console.error(mod, uid, gid);
21+
//console.error("isExe?", (mod & 0111).toString(8))
22+
var ret = (mod & 0001)
23+
|| (mod & 0010) && process.getgid && gid === process.getgid()
24+
|| (mod & 0100) && process.getuid && uid === process.getuid()
25+
//console.error("isExe?", ret)
26+
return ret
27+
}
28+
}
29+
30+
31+
32+
function which (cmd, cb) {
33+
if (isAbsolute(cmd)) return cb(null, cmd)
34+
var pathEnv = (process.env.PATH || "").split(COLON)
35+
, pathExt = [""]
36+
if (process.platform === "win32") {
37+
pathEnv.push(process.cwd())
38+
pathExt = (process.env.PATHEXT || ".EXE").split(COLON)
39+
if (cmd.indexOf(".") !== -1) pathExt.unshift("")
40+
}
41+
//console.error("pathEnv", pathEnv)
42+
;(function F (i, l) {
43+
if (i === l) return cb(new Error("not found: "+cmd))
44+
var p = path.resolve(pathEnv[i], cmd)
45+
;(function E (ii, ll) {
46+
if (ii === ll) return F(i + 1, l)
47+
var ext = pathExt[ii]
48+
//console.error(p + ext)
49+
fs.stat(p + ext, function (er, stat) {
50+
if (!er &&
51+
stat &&
52+
stat.isFile() &&
53+
isExe(stat.mode, stat.uid, stat.gid)) {
54+
//console.error("yes, exe!", p + ext)
55+
return cb(null, p + ext)
56+
}
57+
return E(ii + 1, ll)
58+
})
59+
})(0, pathExt.length)
60+
})(0, pathEnv.length)
61+
}
62+
63+
function whichSync (cmd) {
64+
if (isAbsolute(cmd)) return cmd
65+
var pathEnv = (process.env.PATH || "").split(COLON)
66+
, pathExt = [""]
67+
if (process.platform === "win32") {
68+
pathEnv.push(process.cwd())
69+
pathExt = (process.env.PATHEXT || ".EXE").split(COLON)
70+
if (cmd.indexOf(".") !== -1) pathExt.unshift("")
71+
}
72+
for (var i = 0, l = pathEnv.length; i < l; i ++) {
73+
var p = path.join(pathEnv[i], cmd)
74+
for (var j = 0, ll = pathExt.length; j < ll; j ++) {
75+
var cur = p + pathExt[j]
76+
var stat
77+
try { stat = fs.statSync(cur) } catch (ex) {}
78+
if (stat &&
79+
stat.isFile() &&
80+
isExe(stat.mode, stat.uid, stat.gid)) return cur
81+
}
82+
}
83+
throw new Error("not found: "+cmd)
84+
}
85+
86+
var isAbsolute = process.platform === "win32" ? absWin : absUnix
87+
88+
function absWin (p) {
89+
if (absUnix(p)) return true
90+
// pull off the device/UNC bit from a windows path.
91+
// from node's lib/path.js
92+
var splitDeviceRe =
93+
/^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/][^\\\/]+)?([\\\/])?/
94+
, result = splitDeviceRe.exec(p)
95+
, device = result[1] || ''
96+
, isUnc = device && device.charAt(1) !== ':'
97+
, isAbsolute = !!result[2] || isUnc // UNC paths are always absolute
98+
99+
return isAbsolute
100+
}
101+
102+
function absUnix (p) {
103+
return p.charAt(0) === "/" || p === ""
104+
}

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