1 package org.apache.maven.shared.utils;
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22 import java.util.Collections;
23 import java.util.HashSet;
24 import java.util.Locale;
25 import java.util.Set;
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45 public class Os
46 {
47 public static final String OS_NAME = System.getProperty( "os.name" ).toLowerCase( Locale.ENGLISH );
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49 public static final String OS_ARCH = System.getProperty( "os.arch" ).toLowerCase( Locale.ENGLISH );
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51 public static final String OS_VERSION = System.getProperty( "os.version" ).toLowerCase( Locale.ENGLISH );
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53 public static final String PATH_SEP = System.getProperty( "path.separator" );
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58 public static final String LINE_SEP = System.getProperty( "line.separator" );
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60 public static final String OS_FAMILY = getOsFamily();
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63 private static final Set<String> VALID_FAMILIES = getValidFamilies();
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69 private String family;
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74 public static final String FAMILY_WINDOWS = "windows";
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79 public static final String FAMILY_WIN9X = "win9x";
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84 public static final String FAMILY_NT = "winnt";
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89 public static final String FAMILY_OS2 = "os/2";
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94 public static final String FAMILY_NETWARE = "netware";
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99 public static final String FAMILY_DOS = "dos";
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104 public static final String FAMILY_MAC = "mac";
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109 public static final String FAMILY_TANDEM = "tandem";
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114 public static final String FAMILY_UNIX = "unix";
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119 public static final String FAMILY_OPENVMS = "openvms";
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124 public static final String FAMILY_ZOS = "z/os";
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129 public static final String FAMILY_OS400 = "os/400";
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137 private static final String DARWIN = "darwin";
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144 public static Set<String> getValidFamilies()
145 {
146 if ( VALID_FAMILIES != null )
147 {
148 return VALID_FAMILIES;
149 }
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151 Set<String> valid = new HashSet<String>();
152 valid.add( FAMILY_DOS );
153 valid.add( FAMILY_MAC );
154 valid.add( FAMILY_NETWARE );
155 valid.add( FAMILY_NT );
156 valid.add( FAMILY_OPENVMS );
157 valid.add( FAMILY_OS2 );
158 valid.add( FAMILY_OS400 );
159 valid.add( FAMILY_TANDEM );
160 valid.add( FAMILY_UNIX );
161 valid.add( FAMILY_WIN9X );
162 valid.add( FAMILY_WINDOWS );
163 valid.add( FAMILY_ZOS );
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165 return Collections.unmodifiableSet( valid );
166 }
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171 public Os()
172 {
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174 }
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181 public Os( String family )
182 {
183 setFamily( family );
184 }
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204 private void setFamily( String f )
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206 family = f.toLowerCase( Locale.ENGLISH );
207 }
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216 boolean eval()
217 {
218 return isOs( family, null, null, null );
219 }
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229 public static boolean isFamily( String family )
230 {
231 return isOs( family, null, null, null );
232 }
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242 public static boolean isName( String name )
243 {
244 return isOs( null, name, null, null );
245 }
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255 public static boolean isArch( String arch )
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257 return isOs( null, null, arch, null );
258 }
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268 public static boolean isVersion( String version )
269 {
270 return isOs( null, null, null, version );
271 }
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284 private static boolean isOs( String family, String name, String arch, String version )
285 {
286 boolean retValue = false;
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288 if ( family != null || name != null || arch != null || version != null )
289 {
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291 boolean isFamily = true;
292 boolean isName = true;
293 boolean isArch = true;
294 boolean isVersion = true;
295
296 if ( family != null )
297 {
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301 boolean isWindows = OS_NAME.contains( FAMILY_WINDOWS );
302 boolean is9x = false;
303 boolean isNT = false;
304 if ( isWindows )
305 {
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307 is9x =
308 ( OS_NAME.contains( "95" ) || OS_NAME.contains( "98" ) || OS_NAME.contains( "me" )
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311 || OS_NAME.contains( "ce" ) );
312 isNT = !is9x;
313 }
314 if ( family.equals( FAMILY_WINDOWS ) )
315 {
316 isFamily = isWindows;
317 }
318 else if ( family.equals( FAMILY_WIN9X ) )
319 {
320 isFamily = isWindows && is9x;
321 }
322 else if ( family.equals( FAMILY_NT ) )
323 {
324 isFamily = isWindows && isNT;
325 }
326 else if ( family.equals( FAMILY_OS2 ) )
327 {
328 isFamily = OS_NAME.contains( FAMILY_OS2 );
329 }
330 else if ( family.equals( FAMILY_NETWARE ) )
331 {
332 isFamily = OS_NAME.contains( FAMILY_NETWARE );
333 }
334 else if ( family.equals( FAMILY_DOS ) )
335 {
336 isFamily = PATH_SEP.equals( ";" ) && !isFamily( FAMILY_NETWARE );
337 }
338 else if ( family.equals( FAMILY_MAC ) )
339 {
340 isFamily = OS_NAME.contains( FAMILY_MAC ) || OS_NAME.contains( DARWIN );
341 }
342 else if ( family.equals( FAMILY_TANDEM ) )
343 {
344 isFamily = OS_NAME.contains( "nonstop_kernel" );
345 }
346 else if ( family.equals( FAMILY_UNIX ) )
347 {
348 isFamily = PATH_SEP.equals( ":" ) && !isFamily( FAMILY_OPENVMS ) && ( !isFamily( FAMILY_MAC )
349 || OS_NAME.endsWith( "x" ) || OS_NAME.contains( DARWIN ) );
350 }
351 else if ( family.equals( FAMILY_ZOS ) )
352 {
353 isFamily = OS_NAME.contains( FAMILY_ZOS ) || OS_NAME.contains( "os/390" );
354 }
355 else if ( family.equals( FAMILY_OS400 ) )
356 {
357 isFamily = OS_NAME.contains( FAMILY_OS400 );
358 }
359 else if ( family.equals( FAMILY_OPENVMS ) )
360 {
361 isFamily = OS_NAME.contains( FAMILY_OPENVMS );
362 }
363 else
364 {
365 isFamily = OS_NAME.contains( family.toLowerCase( Locale.US ) );
366 }
367 }
368 if ( name != null )
369 {
370 isName = name.equals( OS_NAME );
371 }
372 if ( arch != null )
373 {
374 isArch = arch.equals( OS_ARCH );
375 }
376 if ( version != null )
377 {
378 isVersion = version.equals( OS_VERSION );
379 }
380 retValue = isFamily && isName && isArch && isVersion;
381 }
382 return retValue;
383 }
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390 private static String getOsFamily()
391 {
392 Set<String> families = getValidFamilies();
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394 for ( String fam : families )
395 {
396 if ( Os.isFamily( fam ) )
397 {
398 return fam;
399 }
400 }
401 return null;
402 }
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410 public static boolean isValidFamily( String family )
411 {
412 return VALID_FAMILIES.contains( family );
413 }
414
415 }