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Commit6d538d4

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iluwatar#2 Add zip multiple files snippet
1 parentf5b1a95 commit6d538d4

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4 files changed

+71
-2
lines changed

4 files changed

+71
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‎README.md‎

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@@ -22,6 +22,7 @@ Update the sample application with the snippet and add a test for it. After prov
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*[List files in directory recursively](#list-files-in-directory-recursively)
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*[Read lines from file to string list](#read-lines-from-file-to-string-list)
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*[Zip file](#zip-file)
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*[Zip multiple files](#zip-multiple-files)
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###Math
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*[Factorial](#factorial)
@@ -182,6 +183,30 @@ Update the sample application with the snippet and add a test for it. After prov
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}
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```
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###Zip multiple files
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```java
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publicstaticvoid zipFiles(String[] srcFilenames,String zipFilename) throwsIOException {
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try (
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FileOutputStream fileOut=newFileOutputStream(zipFilename);
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ZipOutputStream zipOut=newZipOutputStream(fileOut);
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) {
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for (int i=0; i<srcFilenames.length; i++) {
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File srcFile=newFile(srcFilenames[i]);
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try (FileInputStream fileIn=newFileInputStream(srcFile)) {
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ZipEntry zipEntry=newZipEntry(srcFile.getName());
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zipOut.putNextEntry(zipEntry);
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finalbyte[] bytes=newbyte[1024];
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int length;
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while ((length= fileIn.read(bytes))>=0) {
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zipOut.write(bytes,0, length);
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}
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}
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}
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}
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}
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```
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[⬆ back to top](#table-of-contents)
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##Math

‎src/main/java/Library.java‎

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Original file line numberDiff line numberDiff line change
@@ -243,6 +243,32 @@ public static void zipFile(String srcFilename, String zipFilename) throws IOExce
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}
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}
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/**
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* Zip multiples files
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* @param srcFilenames array of source file names
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* @param zipFilename the filename of the destination zip file
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* @throws IOException
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*/
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publicstaticvoidzipFiles(String[]srcFilenames,StringzipFilename)throwsIOException {
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try (
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FileOutputStreamfileOut =newFileOutputStream(zipFilename);
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ZipOutputStreamzipOut =newZipOutputStream(fileOut);
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) {
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for (inti=0;i<srcFilenames.length;i++) {
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FilesrcFile =newFile(srcFilenames[i]);
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try (FileInputStreamfileIn =newFileInputStream(srcFile)) {
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ZipEntryzipEntry =newZipEntry(srcFile.getName());
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zipOut.putNextEntry(zipEntry);
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finalbyte[]bytes =newbyte[1024];
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intlength;
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while ((length =fileIn.read(bytes)) >=0) {
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zipOut.write(bytes,0,length);
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}
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}
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}
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}
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}
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/**
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* Sort an array with quicksort algorithm
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* @param arr array to sort

‎src/test/java/LibraryTest.java‎

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Original file line numberDiff line numberDiff line change
@@ -195,8 +195,9 @@ public void testIsPalindrome() {
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@Test
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publicvoidtestListFilesInDirectory() {
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File[]files =Library.listFilesInDirectory(newFile("src/test/resources"));
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assertEquals(1,files.length);
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assertEquals(2,files.length);
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assertEquals("src/test/resources/somelines.txt",files[0].toString());
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assertEquals("src/test/resources/someotherlines.txt",files[1].toString());
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}
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/**
@@ -205,7 +206,7 @@ public void testListFilesInDirectory() {
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@Test
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publicvoidtestListAllFiles() {
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List<File>files =Library.listAllFiles("src/test/resources");
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assertEquals(3,files.size());
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assertEquals(4,files.size());
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}
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/**
@@ -238,6 +239,21 @@ public void testZipFile() throws IOException {
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}
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}
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/**
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* Tests for {@link Library#zipFiles(String[], String)}
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*/
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@Test
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publicvoidtestZipFiles()throwsIOException {
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finalString[]srcFilenames = {"src/test/resources/somelines.txt","src/test/resources/someotherlines.txt"};
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finalStringdst ="src/test/resources/multiple.zip";
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try {
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Library.zipFiles(srcFilenames,dst);
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assertTrue(Files.exists(Paths.get(dst)));
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}finally {
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Files.deleteIfExists(newFile(dst).toPath());
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}
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}
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/**
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* Tests for {@link Library#quickSort(int[], int, int)}
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*/
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