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client_java/.mvn/wrapper/MavenWrapperDownloader.java at main · sampleitgithub1/client_java · GitHub
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.mvn
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wrapper
/
MavenWrapperDownloader.java
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.mvn
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wrapper
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MavenWrapperDownloader.java
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/*
* Copyright 2007-present the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import
java
.
net
.*;
import
java
.
io
.*;
import
java
.
nio
.
channels
.*;
import
java
.
util
.
Properties
;
public
class
MavenWrapperDownloader
{
private
static
final
String
WRAPPER_VERSION
=
"0.5.6"
;
/**
* Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
*/
private
static
final
String
DEFAULT_DOWNLOAD_URL
=
"https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+
WRAPPER_VERSION
+
"/maven-wrapper-"
+
WRAPPER_VERSION
+
".jar"
;
/**
* Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
* use instead of the default one.
*/
private
static
final
String
MAVEN_WRAPPER_PROPERTIES_PATH
=
".mvn/wrapper/maven-wrapper.properties"
;
/**
* Path where the maven-wrapper.jar will be saved to.
*/
private
static
final
String
MAVEN_WRAPPER_JAR_PATH
=
".mvn/wrapper/maven-wrapper.jar"
;
/**
* Name of the property which should be used to override the default download url for the wrapper.
*/
private
static
final
String
PROPERTY_NAME_WRAPPER_URL
=
"wrapperUrl"
;
public
static
void
main
(
String
args
[]) {
System
.
out
.
println
(
"- Downloader started"
);
File
baseDirectory
=
new
File
(
args
[
0
]);
System
.
out
.
println
(
"- Using base directory: "
+
baseDirectory
.
getAbsolutePath
());
// If the maven-wrapper.properties exists, read it and check if it contains a custom
// wrapperUrl parameter.
File
mavenWrapperPropertyFile
=
new
File
(
baseDirectory
,
MAVEN_WRAPPER_PROPERTIES_PATH
);
String
url
=
DEFAULT_DOWNLOAD_URL
;
if
(
mavenWrapperPropertyFile
.
exists
()) {
FileInputStream
mavenWrapperPropertyFileInputStream
=
null
;
try
{
mavenWrapperPropertyFileInputStream
=
new
FileInputStream
(
mavenWrapperPropertyFile
);
Properties
mavenWrapperProperties
=
new
Properties
();
mavenWrapperProperties
.
load
(
mavenWrapperPropertyFileInputStream
);
url
=
mavenWrapperProperties
.
getProperty
(
PROPERTY_NAME_WRAPPER_URL
,
url
);
}
catch
(
IOException
e
) {
System
.
out
.
println
(
"- ERROR loading '"
+
MAVEN_WRAPPER_PROPERTIES_PATH
+
"'"
);
}
finally
{
try
{
if
(
mavenWrapperPropertyFileInputStream
!=
null
) {
mavenWrapperPropertyFileInputStream
.
close
();
}
}
catch
(
IOException
e
) {
// Ignore ...
}
}
}
System
.
out
.
println
(
"- Downloading from: "
+
url
);
File
outputFile
=
new
File
(
baseDirectory
.
getAbsolutePath
(),
MAVEN_WRAPPER_JAR_PATH
);
if
(!
outputFile
.
getParentFile
().
exists
()) {
if
(!
outputFile
.
getParentFile
().
mkdirs
()) {
System
.
out
.
println
(
"- ERROR creating output directory '"
+
outputFile
.
getParentFile
().
getAbsolutePath
() +
"'"
);
}
}
System
.
out
.
println
(
"- Downloading to: "
+
outputFile
.
getAbsolutePath
());
try
{
downloadFileFromURL
(
url
,
outputFile
);
System
.
out
.
println
(
"Done"
);
System
.
exit
(
0
);
}
catch
(
Throwable
e
) {
System
.
out
.
println
(
"- Error downloading"
);
e
.
printStackTrace
();
System
.
exit
(
1
);
}
}
private
static
void
downloadFileFromURL
(
String
urlString
,
File
destination
)
throws
Exception
{
if
(
System
.
getenv
(
"MVNW_USERNAME"
) !=
null
&&
System
.
getenv
(
"MVNW_PASSWORD"
) !=
null
) {
String
username
=
System
.
getenv
(
"MVNW_USERNAME"
);
char
[]
password
=
System
.
getenv
(
"MVNW_PASSWORD"
).
toCharArray
();
Authenticator
.
setDefault
(
new
Authenticator
() {
@
Override
protected
PasswordAuthentication
getPasswordAuthentication
() {
return
new
PasswordAuthentication
(
username
,
password
);
}
});
}
URL
website
=
new
URL
(
urlString
);
ReadableByteChannel
rbc
;
rbc
=
Channels
.
newChannel
(
website
.
openStream
());
FileOutputStream
fos
=
new
FileOutputStream
(
destination
);
fos
.
getChannel
().
transferFrom
(
rbc
,
0
,
Long
.
MAX_VALUE
);
fos
.
close
();
rbc
.
close
();
}
}
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