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nodegit/install.js at 83407702be9d97834e1d4c3f4e9814716bed4306 · nodegit/nodegit · GitHub
nodegit
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install.js
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var
os
=
require
(
"os"
)
;
var
fs
=
require
(
"fs"
)
;
var
path
=
require
(
"path"
)
;
var
zlib
=
require
(
"zlib"
)
;
var
exec
=
require
(
"child_process"
)
.
exec
;
var
Q
=
require
(
"q"
)
;
var
request
=
require
(
"request"
)
;
var
tar
=
require
(
"tar"
)
;
var
which
=
require
(
"which"
)
;
var
rimraf
=
require
(
"rimraf"
)
;
var
NODE_VERSION
=
Number
(
process
.
version
.
match
(
/
^
v
(
\d
+
\.
\d
+
)
/
)
[
1
]
)
;
// If the build only flag is set
var
buildOnly
=
process
.
argv
.
indexOf
(
"--build-only"
)
>
-
1
;
if
(
buildOnly
)
{
console
.
log
(
"buildOnly"
)
;
return
;
}
// This will take in an object and find any matching keys in the environment
// to use as overrides.
//
// ENV variables:
//
// PKG: Location of `package.json` sans `.json`.
// LIBGIT2: Location of libgit2 source.
// BUILD: Location of nodegit build directory.
function
envOverride
(
obj
)
{
// Look through all keys.
return
Object
.
keys
(
obj
)
.
reduce
(
function
(
obj
,
key
)
{
var
normalize
=
key
.
toUpperCase
(
)
;
// Check for process environment existence.
if
(
normalize
in
process
.
env
)
{
obj
[
key
]
=
process
.
env
[
normalize
]
;
}
return
obj
;
}
,
obj
)
;
}
// Convert to the correct system path.
function
systemPath
(
parts
)
{
return
parts
.
join
(
path
.
sep
)
;
}
// Will be used near the end to configure `node-gyp`.
var
python
;
var
local
=
path
.
join
.
bind
(
path
,
__dirname
)
;
// Common reusable paths that can be overwritten by environment variables.
var
paths
=
envOverride
(
{
pkg
:
local
(
"package"
)
,
libgit2
:
local
(
"vendor/libgit2/"
)
,
libssh2
:
local
(
"vendor/libssh2/"
)
,
http_parser
:
local
(
"vendor/http_parser/"
)
,
sys
:
{
include
:
local
(
"include/sys/"
)
,
src
:
local
(
"src/sys/"
)
,
build
:
local
(
"build/Release/obj.target/src/sys/"
)
}
,
release
:
local
(
"build/Release/"
)
}
)
;
// Load the package.json.
var
pkg
=
require
(
paths
.
pkg
)
;
if
(
NODE_VERSION
===
0.1
)
{
pkg
.
http_parser
=
pkg
.
http_parser
[
"0.10"
]
;
}
// Ensure all dependencies are available.
var
dependencies
=
Q
.
allSettled
(
[
// This will prioritize `python2` over `python`, because we always want to
// work with Python 2.* if it"s available.
Q
.
nfcall
(
which
,
"python2"
)
,
Q
.
nfcall
(
which
,
"python"
)
]
)
// Determine if all the dependency requirements are met.
.
then
(
function
(
results
)
{
console
.
info
(
"[nodegit] Determining dependencies."
)
;
// Assign to reusable variables.
python
=
results
[
0
]
.
value
||
results
[
1
]
.
value
;
// Missing Python.
if
(
!
python
)
{
throw
new
Error
(
"Python is required to build libgit2."
)
;
}
// Now lets check the Python version to ensure it"s < 3.
return
Q
.
nfcall
(
exec
,
python
+
" --version"
)
.
then
(
function
(
version
)
{
if
(
version
[
1
]
.
indexOf
(
"Python 3"
)
===
0
)
{
throw
new
Error
(
"Incorrect version of Python, gyp requires < 3."
)
;
}
}
)
;
}
)
// Successfully found all dependencies. First step is to detect the vendor
// directory.
.
then
(
function
(
)
{
console
.
info
(
"[nodegit] Detecting vendor/libgit2."
)
;
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
libgit2
)
.
then
(
function
(
)
{
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
libgit2
+
pkg
.
libgit2
.
sha
)
;
}
)
.
fail
(
function
(
)
{
console
.
info
(
"[nodegit] Removing outdated vendor/libgit2."
)
;
// This directory is outdated, remove.
throw
Q
.
ninvoke
(
rimraf
,
null
,
paths
.
libgit2
)
;
}
)
;
}
)
// If the directory already exists, no need to refetch.
.
fail
(
function
(
)
{
// Otherwise fetch the libgit2 source from GitHub.
console
.
info
(
"[nodegit] Fetching vendor/libgit2."
)
;
var
url
=
"https://github.com/libgit2/libgit2/tarball/"
+
pkg
.
libgit2
.
sha
;
var
extract
=
tar
.
Extract
(
{
path
:
paths
.
libgit2
,
strip
:
true
}
)
;
// First extract from Zlib and then extract from Tar.
var
expand
=
request
.
get
(
url
)
.
pipe
(
zlib
.
createUnzip
(
)
)
.
pipe
(
extract
)
;
return
Q
.
ninvoke
(
expand
,
"on"
,
"end"
)
.
then
(
function
(
)
{
// Write out a sha file for testing in the future.
return
Q
.
ninvoke
(
fs
,
"writeFile"
,
paths
.
libgit2
+
pkg
.
libgit2
.
sha
,
""
)
;
}
)
;
}
)
// Grab libssh2 if needed.
.
then
(
function
(
)
{
console
.
info
(
"[nodegit] Detecting vendor/libssh2."
)
;
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
libssh2
)
.
then
(
function
(
)
{
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
libssh2
+
pkg
.
libssh2
.
version
)
;
}
)
.
fail
(
function
(
)
{
console
.
info
(
"[nodegit] Removing outdated vendor/libssh2."
)
;
// This directory is outdated, remove.
throw
Q
.
ninvoke
(
rimraf
,
null
,
paths
.
libssh2
)
;
}
)
;
}
)
// If the directory already exists, no need to refetch.
.
fail
(
function
(
)
{
// Otherwise fetch the libssh2 source.
console
.
info
(
"[nodegit] Fetching vendor/libssh2."
)
;
var
url
=
pkg
.
libssh2
.
url
;
var
extract
=
tar
.
Extract
(
{
path
:
paths
.
libssh2
,
strip
:
true
}
)
;
// First extract from Zlib and then extract from Tar.
var
expand
=
request
.
get
(
url
)
.
pipe
(
zlib
.
createUnzip
(
)
)
.
pipe
(
extract
)
;
return
Q
.
ninvoke
(
expand
,
"on"
,
"end"
)
.
then
(
function
(
)
{
// Write out a sha file for testing in the future.
return
Q
.
ninvoke
(
fs
,
"writeFile"
,
paths
.
libssh2
+
pkg
.
libssh2
.
version
,
""
)
;
}
)
.
then
(
function
(
)
{
// Only run the configuration script in a BSD-like environment.
if
(
process
.
platform
!==
"win32"
)
{
return
Q
.
nfcall
(
exec
,
"cd "
+
paths
.
libssh2
+
" ; "
+
paths
.
libssh2
+
"configure"
)
;
}
}
)
;
}
)
// Grab http-parser if needed.
.
then
(
function
(
)
{
console
.
info
(
"[nodegit] Detecting vendor/http_parser."
)
;
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
http_parser
)
.
then
(
function
(
)
{
return
Q
.
ninvoke
(
fs
,
"stat"
,
paths
.
http_parser
+
pkg
.
http_parser
.
version
)
;
}
)
.
fail
(
function
(
)
{
console
.
info
(
"[nodegit] Removing outdated vendor/http_parser."
)
;
// This directory is outdated, remove.
throw
Q
.
ninvoke
(
rimraf
,
null
,
paths
.
http_parser
)
;
}
)
;
}
)
// If the directory already exists, no need to refetch.
.
fail
(
function
(
)
{
// Otherwise fetch the http_parser source.
console
.
info
(
"[nodegit] Fetching vendor/http_parser."
)
;
var
url
=
pkg
.
http_parser
.
url
;
var
extract
=
tar
.
Extract
(
{
path
:
paths
.
http_parser
,
strip
:
true
}
)
;
// First extract from Zlib and then extract from Tar.
var
expand
=
request
.
get
(
url
)
.
pipe
(
zlib
.
createUnzip
(
)
)
.
pipe
(
extract
)
;
return
Q
.
ninvoke
(
expand
,
"on"
,
"end"
)
.
then
(
function
(
)
{
// Write out a sha file for testing in the future.
return
Q
.
ninvoke
(
fs
,
"writeFile"
,
paths
.
http_parser
+
pkg
.
http_parser
.
version
,
""
)
;
}
)
;
}
)
// Build the native module using node-gyp.
.
then
(
function
(
)
{
console
.
info
(
"[nodegit] Building native node module."
)
;
var
pythonFlag
=
" --python \""
+
python
+
"\""
;
return
Q
.
nfcall
(
exec
,
systemPath
(
[
"."
,
"node_modules"
,
".bin"
,
"node-gyp clean configure build"
+
pythonFlag
]
)
,
{
cwd
:
"."
,
maxBuffer
:
Number
.
MAX_VALUE
}
)
;
}
)
// Attempt to fallback on a prebuilt binary.
.
fail
(
function
(
message
)
{
console
.
info
(
"[nodegit] Failed to build nodegit."
)
;
console
.
info
(
"[nodegit] Attempting to fallback on a prebuilt binary."
)
;
console
.
log
(
message
.
stack
)
;
function
fetchPrebuilt
(
)
{
console
.
info
(
"[nodegit] Fetching binary from S3."
)
;
// Using the node-pre-gyp module, attempt to fetch a compatible build.
return
Q
.
nfcall
(
exec
,
"node-pre-gyp install"
)
;
}
// Attempt to fetch prebuilt binary.
return
Q
.
ninvoke
(
fs
,
"mkdir"
,
paths
.
release
)
.
then
(
fetchPrebuilt
,
fetchPrebuilt
)
;
}
)
// Display a warning message about failing to build native node module.
.
fail
(
function
(
message
)
{
console
.
info
(
"[nodegit] Failed to build and install nodegit."
)
;
console
.
info
(
message
.
message
)
;
console
.
info
(
message
.
stack
)
;
}
)
// Display a success message.
.
then
(
function
(
)
{
console
.
info
(
"[nodegit] Completed installation successfully."
)
;
}
)
// Display a warning message about failing to build native node module.
.
fail
(
function
(
message
)
{
console
.
info
(
"[nodegit] Failed to build nodegit."
)
;
console
.
info
(
message
.
message
)
;
console
.
info
(
message
.
stack
)
;
}
)
;
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