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package ca.uhn.hl7v2.hoh.util; |
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import java.io.ByteArrayOutputStream; |
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import java.io.File; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.io.OutputStream; |
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import java.util.List; |
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public class IOUtils { |
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public static final int DEFAULT_BUFFER_SIZE = 1024 * 4; |
16 | 5 | public static final String FILE_PATH_SEP = System.getProperty("file.separator"); |
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18 | 5 | private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(IOUtils.class); |
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private IOUtils() { |
24 | 0 | super(); |
25 | 0 | } |
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public static long copy(InputStream input, OutputStream output) throws IOException { |
47 | 10 | byte[] buffer = new byte[DEFAULT_BUFFER_SIZE]; |
48 | 10 | long count = 0; |
49 | 10 | int n = 0; |
50 | 20 | while (-1 != (n = input.read(buffer))) { |
51 | 10 | output.write(buffer, 0, n); |
52 | 10 | count += n; |
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} |
54 | 10 | return count; |
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} |
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public static long copyWhileDataAvailable(InputStream input, OutputStream output) throws IOException { |
58 | 0 | byte[] buffer = new byte[DEFAULT_BUFFER_SIZE]; |
59 | 0 | long count = 0; |
60 | 0 | int n = 0; |
61 | 0 | while (input.available() > 0 && -1 != (n = input.read(buffer))) { |
62 | 0 | output.write(buffer, 0, n); |
63 | 0 | count += n; |
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} |
65 | 0 | return count; |
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} |
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public static void deleteAllFromDirectory(File theWorkfilesDir) { |
69 | 0 | File[] listFiles = theWorkfilesDir.listFiles(); |
70 | 0 | if (listFiles.length == 0) { |
71 | 0 | return; |
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} |
73 | 0 | ourLog.info("Deleting {} files from {}", listFiles.length, theWorkfilesDir.getAbsoluteFile()); |
74 | 0 | for (File next : listFiles) { |
75 | 0 | ourLog.info("Deleting existing file: " + next); |
76 | 0 | next.delete(); |
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} |
78 | 0 | } |
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public static void deleteAllFromDirectoryExcept(File theDirectory, List<File> theExcept) throws IOException { |
81 | 0 | File[] listFiles = theDirectory.listFiles(); |
82 | 0 | if (listFiles.length == 0) { |
83 | 0 | return; |
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} |
85 | 0 | ourLog.info("Deleting unneeded files from {}", theDirectory.getAbsoluteFile()); |
86 | 0 | for (File nextFile : listFiles) { |
87 | 0 | boolean keep = false; |
88 | 0 | for (File nextExcept : theExcept) { |
89 | 0 | if (nextFile.getCanonicalPath().equals(nextExcept.getCanonicalPath())) { |
90 | 0 | keep = true; |
91 | 0 | break; |
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} |
93 | 0 | } |
94 | 0 | if (!keep) { |
95 | 0 | ourLog.info("Deleting existing file: " + nextFile); |
96 | 0 | nextFile.delete(); |
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} |
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} |
99 | 0 | } |
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public static byte[] readClasspathIntoByteArray(String theString) throws IOException { |
105 | 0 | InputStream res = IOUtils.class.getResourceAsStream(theString); |
106 | 0 | return readInputStreamIntoByteArray(res); |
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} |
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public static byte[] readInputStreamIntoByteArraWhileDataAvailable(InputStream res) throws IOException { |
110 | 0 | java.io.ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
111 | 0 | copyWhileDataAvailable(res, bos); |
112 | 0 | return bos.toByteArray(); |
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} |
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public static byte[] readInputStreamIntoByteArray(InputStream res) throws IOException { |
119 | 0 | java.io.ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
120 | 0 | copy(res, bos); |
121 | 0 | return bos.toByteArray(); |
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} |
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} |