Mercurial Hosting > luan
annotate src/goodjava/io/IoUtils.java @ 1678:f54484aae295
fix
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 31 May 2022 14:44:29 -0600 |
parents | 08177ced7fa0 |
children | 2dbcc8360a3e |
rev | line source |
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1473 | 1 package goodjava.io; |
2 | |
3 import java.io.File; | |
1493 | 4 import java.io.InputStream; |
5 import java.io.OutputStream; | |
1509 | 6 import java.io.Reader; |
7 import java.io.InputStreamReader; | |
8 import java.io.Writer; | |
9 import java.io.StringWriter; | |
1473 | 10 import java.io.IOException; |
11 import java.nio.file.Files; | |
1548 | 12 import java.nio.file.attribute.FileTime; |
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13 import java.security.Security; |
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14 import javax.net.ssl.SSLSocketFactory; |
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15 import javax.net.ssl.SSLServerSocketFactory; |
1509 | 16 import goodjava.logging.Logger; |
17 import goodjava.logging.LoggerFactory; | |
1473 | 18 |
19 | |
20 public final class IoUtils { | |
1509 | 21 private static final Logger logger = LoggerFactory.getLogger(IoUtils.class); |
22 | |
1473 | 23 private IoUtils() {} // never |
24 | |
25 public static void move( File from, File to ) throws IOException { | |
26 Files.move( from.toPath(), to.toPath() ); | |
27 } | |
28 | |
1661 | 29 public static void copy( File from, File to ) throws IOException { |
30 Files.copy( from.toPath(), to.toPath() ); | |
31 } | |
32 | |
1473 | 33 public static void delete(File file) throws IOException { |
34 Files.deleteIfExists( file.toPath() ); | |
35 } | |
1475 | 36 |
1501 | 37 public static void mkdirs(File file) throws IOException { |
38 Files.createDirectories( file.toPath() ); | |
39 } | |
40 | |
1475 | 41 public static boolean isSymbolicLink(File file) { |
42 return Files.isSymbolicLink(file.toPath()); | |
43 } | |
44 | |
45 public static void deleteRecursively(File file) throws IOException { | |
46 if( file.isDirectory() && !isSymbolicLink(file) ) { | |
47 for( File f : file.listFiles() ) { | |
48 deleteRecursively(f); | |
49 } | |
50 } | |
51 delete(file); | |
52 } | |
53 | |
1497 | 54 public static void link(File existing,File link) throws IOException { |
55 Files.createLink( link.toPath(), existing.toPath() ); | |
56 } | |
57 | |
58 public static void symlink(File existing,File link) throws IOException { | |
59 Files.createSymbolicLink( link.toPath(), existing.toPath() ); | |
1488 | 60 } |
61 | |
1548 | 62 public static long getCreationTime(File f) throws IOException { |
63 return ((FileTime)Files.getAttribute(f.toPath(),"creationTime")).toMillis(); | |
64 } | |
65 | |
1494 | 66 public static void copyAll(InputStream in,OutputStream out) |
1493 | 67 throws IOException |
68 { | |
69 byte[] a = new byte[8192]; | |
70 int n; | |
71 while( (n=in.read(a)) != -1 ) { | |
72 out.write(a,0,n); | |
73 } | |
1499 | 74 in.close(); |
1493 | 75 } |
76 | |
1509 | 77 public static void copyAll(Reader in,Writer out) |
78 throws IOException | |
79 { | |
80 char[] a = new char[8192]; | |
81 int n; | |
82 while( (n=in.read(a)) != -1 ) { | |
83 out.write(a,0,n); | |
84 } | |
85 in.close(); | |
86 } | |
87 | |
88 public static String readAll(Reader in) | |
89 throws IOException | |
90 { | |
91 StringWriter sw = new StringWriter(); | |
92 copyAll(in,sw); | |
93 return sw.toString(); | |
94 } | |
95 | |
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96 public static long checksum(InputStream in) throws IOException { |
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97 long cs = 0; |
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98 int c; |
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99 while( (c=in.read()) != -1 ) { |
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100 cs = 31 * cs + c; |
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101 } |
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102 in.close(); |
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103 return cs; |
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104 } |
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105 |
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106 |
1509 | 107 |
108 public static class ProcException extends IOException { | |
109 private ProcException(String msg) { | |
110 super(msg); | |
111 } | |
112 } | |
113 | |
114 public static void waitFor(Process proc) | |
115 throws IOException, ProcException | |
116 { | |
117 try { | |
118 proc.waitFor(); | |
119 } catch(InterruptedException e) { | |
120 throw new RuntimeException(e); | |
121 } | |
122 int exitVal = proc.exitValue(); | |
123 if( exitVal != 0 ) { | |
124 StringWriter sw = new StringWriter(); | |
1547 | 125 try { |
126 copyAll( new InputStreamReader(proc.getInputStream()), sw ); | |
127 } catch(IOException e) {} | |
1509 | 128 copyAll( new InputStreamReader(proc.getErrorStream()), sw ); |
129 String error = sw.toString(); | |
130 throw new ProcException(error); | |
131 } | |
132 } | |
133 | |
134 | |
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135 static { |
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136 // undo restrictions of modern scum |
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137 Security.setProperty("jdk.tls.disabledAlgorithms","SSLv3, RC4, DES, MD5withRSA, DH keySize < 1024, EC keySize < 224, 3DES_EDE_CBC"); |
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138 } |
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139 |
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140 public static SSLSocketFactory getSSLSocketFactory() { |
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141 return (SSLSocketFactory)SSLSocketFactory.getDefault(); |
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142 } |
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143 |
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144 public static SSLServerSocketFactory getSSLServerSocketFactory() { |
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145 return (SSLServerSocketFactory)SSLServerSocketFactory.getDefault(); |
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146 } |
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147 |
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148 } |