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jargo
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Access to Java JAR file information from Go
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Download README
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jargo
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jargo ====== jargo is a simple library allowing access to information contained in a Java JAR file. It is a simple wrapper to the zip libraries. [godocs](http://godoc.org/github.com/gnewton/jargo) It has two functions: func GetManifest(filename string) (error, *Manifest) It returns a pointer to a Manifest (map[string]string) which is the key:values pairs from the META-INF/MANIFEST.MF file func GetJarInfo(filename string) (error, *JarInfo) GetJarInfo extracts various info from a Java JAR file: * It extracts the Manifest (like GetManifest) * It extracts an array of the filenames in the JAR file * It returns a pointer to a JarInfo struct: ``` type JarInfo struct { *Manifest Files []string } ``` ###Example Usage### Using Lucene analyzer jar file from: http://central.maven.org/maven2/org/apache/lucene/lucene-analyzers-stempel/5.0.0/lucene-analyzers-stempel-5.0.0.jar ``` package main import ( "fmt" "github.com/gnewton/jargo" "log" ) func main() { err, manifest := jargo.GetManifest("lucene-analyzers-stempel-5.0.0.jar") if err != nil { log.Fatal(err) } fmt.Println(manifest) fmt.Println() err, jar := jargo.GetJarInfo("lucene-analyzers-stempel-5.0.0.jar") if err != nil { log.Fatal(err) } fmt.Printf("%+v\n", jar) } ``` Output: ``` &map[Ant-Version:Apache Ant 1.8.3 Specification-Version:5.0.0 Specification-Vendor:The Apache Software Foundation Implementation-Title:org.apache.lucene X-Compile-Source-JDK:1.7 X-Compile-Target-JDK:1.7 Manifest-Version:1.0 Created-By:1.7.0_55-b13 (Oracle Corporation) Extension-Name:org.apache.lucene Specification-Title:Lucene Search Engine: analyzers-stempel Implementation-Version:5.0.0 1659987 - anshumgupta - 2015-02-15 12:20 :34 Implementation-Vendor:The Apache Software Foundation] &{Manifest:0xc20804c018 Files:[META-INF/ META-INF/MANIFEST.MF META-INF/services/ org/ org/apache/ org/apache/lucene/ org/apache/lucene/analysis/ org/apache/lucene/analysis/pl/ org/apache/lucene/analysis/stempel/ org/egothor/ org/egothor/stemmer/ META-INF/services/org.apache.lucene.analysis.util.TokenFilterFactory org/apache/lucene/analysis/pl/PolishAnalyzer$DefaultsHolder.class org/apache/lucene/analysis/pl/PolishAnalyzer.class org/apache/lucene/analysis/pl/stemmer_20000.tbl org/apache/lucene/analysis/pl/stopwords.txt org/apache/lucene/analysis/stempel/StempelFilter.class org/apache/lucene/analysis/stempel/StempelPolishStemFilterFactory.class org/apache/lucene/analysis/stempel/StempelStemmer.class org/egothor/stemmer/Cell.class org/egothor/stemmer/Compile.class org/egothor/stemmer/Diff.class org/egothor/stemmer/DiffIt.class org/egothor/stemmer/Gener.class org/egothor/stemmer/Lift.class org/egothor/stemmer/MultiTrie.class org/egothor/stemmer/MultiTrie2.class org/egothor/stemmer/Optimizer.class org/egothor/stemmer/Optimizer2.class org/egothor/stemmer/Reduce$Remap.class org/egothor/stemmer/Reduce.class org/egothor/stemmer/Row.class org/egothor/stemmer/Trie$StrEnum.class org/egothor/stemmer/Trie.class META-INF/LICENSE.txt META-INF/NOTICE.txt]} ``` ###License### ``` The MIT License (MIT) Copyright (c) 2015 Glen Newton gnewton ``` See LICENSE file.
