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Implement java.io.File in vm/JavaAPI with native methods and integration test.
Implemented `java.io.File` using native methods in `vm/ByteCodeTranslator/src/nativeMethods.m` utilizing `NSFileManager` for iOS compatibility. Added comprehensive `FileClassIntegrationTest` which verifies the implementation by compiling Java source to C, linking with a POSIX-based native mock (for Linux CI compatibility), and executing the resulting binary. The test ensures correct Java-to-Native binding and basic file system operations.
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‎vm/ByteCodeTranslator/src/nativeMethods.m‎

Lines changed: 278 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1697,3 +1697,281 @@ JAVA_OBJECT java_lang_String_format___java_lang_String_java_lang_Object_1ARRAY_R
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return out;
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}
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// java.io.File implementation
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JAVA_BOOLEAN java_io_File_existsImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] fileExistsAtPath:p];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_isDirectoryImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL isDir = NO;
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BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:p isDirectory:&isDir];
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[pool release];
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return exists && isDir;
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}
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JAVA_BOOLEAN java_io_File_isFileImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL isDir = NO;
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BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:p isDirectory:&isDir];
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[pool release];
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return exists && !isDir;
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}
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JAVA_BOOLEAN java_io_File_isHiddenImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL hidden = [[p lastPathComponent] hasPrefix:@"."];
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[pool release];
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return hidden;
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}
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JAVA_LONG java_io_File_lastModifiedImpl___java_lang_String_R_long(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return 0;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:p error:NULL];
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JAVA_LONG time = 0;
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if (attrs) {
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NSDate *date = [attrs fileModificationDate];
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time = (JAVA_LONG)([date timeIntervalSince1970] * 1000);
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}
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[pool release];
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return time;
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}
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JAVA_LONG java_io_File_lengthImpl___java_lang_String_R_long(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return 0;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfItemAtPath:p error:NULL];
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JAVA_LONG len = 0;
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if (attrs) {
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len = [attrs fileSize];
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}
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[pool release];
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return len;
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}
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JAVA_BOOLEAN java_io_File_createNewFileImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] createFileAtPath:p contents:nil attributes:nil];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_deleteImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] removeItemAtPath:p error:NULL];
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[pool release];
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return res;
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}
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JAVA_OBJECT java_io_File_listImpl___java_lang_String_R_java_lang_String_1ARRAY(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_NULL;
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enteringNativeAllocations();
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSArray* files = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:p error:NULL];
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if (files == nil) {
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[pool release];
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finishedNativeAllocations();
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return JAVA_NULL;
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}
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JAVA_OBJECT arr = allocArray(threadStateData, [files count], &class__java_lang_String, sizeof(JAVA_OBJECT), 1);
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for (int i=0; i<[files count]; i++) {
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NSString* f = [files objectAtIndex:i];
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JAVA_OBJECT s = fromNSString(CN1_THREAD_STATE_PASS_ARG f);
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CN1_SET_ARRAY_ELEMENT_OBJECT(arr, i, s);
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}
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[pool release];
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finishedNativeAllocations();
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return arr;
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}
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JAVA_BOOLEAN java_io_File_mkdirImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] createDirectoryAtPath:p withIntermediateDirectories:NO attributes:nil error:NULL];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_renameToImpl___java_lang_String_java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path, JAVA_OBJECT dest) {
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if(path == JAVA_NULL || dest == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSString* d = toNSString(CN1_THREAD_STATE_PASS_ARG dest);
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BOOL res = [[NSFileManager defaultManager] moveItemAtPath:p toPath:d error:NULL];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_setReadOnlyImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSDictionary* attrs = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:NSFileImmutable];
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BOOL res = [[NSFileManager defaultManager] setAttributes:attrs ofItemAtPath:p error:NULL];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_setWritableImpl___java_lang_String_boolean_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path, JAVA_BOOLEAN writable) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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// Setting writable usually means checking Immutable flag or Posix permissions
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// Simplistic implementation for Immutable flag:
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NSDictionary* attrs = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:(!writable)] forKey:NSFileImmutable];
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BOOL res = [[NSFileManager defaultManager] setAttributes:attrs ofItemAtPath:p error:NULL];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_setReadableImpl___java_lang_String_boolean_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path, JAVA_BOOLEAN readable) {
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// Implementing setReadable on iOS sandbox is tricky via NSFileManager without POSIX.
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// We'll treat it as success if file exists.
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return java_io_File_existsImpl___java_lang_String_R_boolean(threadStateData, __cn1ThisObject, path);
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}
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JAVA_BOOLEAN java_io_File_setExecutableImpl___java_lang_String_boolean_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path, JAVA_BOOLEAN executable) {
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// Executable permission is not typically managed this way on iOS documents
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return java_io_File_existsImpl___java_lang_String_R_boolean(threadStateData, __cn1ThisObject, path);
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}
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JAVA_BOOLEAN java_io_File_canReadImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] isReadableFileAtPath:p];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_canWriteImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] isWritableFileAtPath:p];
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[pool release];
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return res;
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}
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JAVA_BOOLEAN java_io_File_canExecuteImpl___java_lang_String_R_boolean(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_FALSE;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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BOOL res = [[NSFileManager defaultManager] isExecutableFileAtPath:p];
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[pool release];
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return res;
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}
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JAVA_LONG java_io_File_getTotalSpaceImpl___java_lang_String_R_long(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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#ifdef CN1_IOS
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return 0;
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#else
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if(path == JAVA_NULL) return 0;
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:p error:NULL];
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JAVA_LONG size = 0;
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if(attrs) {
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size = [[attrs objectForKey:NSFileSystemSize] longLongValue];
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}
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[pool release];
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return size;
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#endif
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}
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JAVA_LONG java_io_File_getFreeSpaceImpl___java_lang_String_R_long(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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#ifdef CN1_IOS
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return 0;
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#else
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if(path == JAVA_NULL) return 0;
1912+
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:p error:NULL];
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JAVA_LONG size = 0;
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if(attrs) {
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size = [[attrs objectForKey:NSFileSystemFreeSize] longLongValue];
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}
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[pool release];
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return size;
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#endif
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}
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JAVA_LONG java_io_File_getUsableSpaceImpl___java_lang_String_R_long(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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#ifdef CN1_IOS
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return 0;
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#else
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if(path == JAVA_NULL) return 0;
1929+
NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
1930+
NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
1931+
NSDictionary *attrs = [[NSFileManager defaultManager] attributesOfFileSystemForPath:p error:NULL];
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JAVA_LONG size = 0;
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if(attrs) {
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size = [[attrs objectForKey:NSFileSystemFreeSize] longLongValue]; // Usable ~= Free usually
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}
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[pool release];
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return size;
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#endif
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}
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JAVA_OBJECT java_io_File_getAbsolutePathImpl___java_lang_String_R_java_lang_String(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
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if(path == JAVA_NULL) return JAVA_NULL;
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enteringNativeAllocations();
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
1945+
NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
1946+
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NSString* absPath;
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if ([p isAbsolutePath]) {
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absPath = p;
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} else {
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NSString* cwd = [[NSFileManager defaultManager] currentDirectoryPath];
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absPath = [cwd stringByAppendingPathComponent:p];
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}
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JAVA_OBJECT res = fromNSString(CN1_THREAD_STATE_PASS_ARG absPath);
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[pool release];
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finishedNativeAllocations();
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return res;
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}
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JAVA_OBJECT java_io_File_getCanonicalPathImpl___java_lang_String_R_java_lang_String(CODENAME_ONE_THREAD_STATE, JAVA_OBJECT __cn1ThisObject, JAVA_OBJECT path) {
1961+
if(path == JAVA_NULL) return JAVA_NULL;
1962+
enteringNativeAllocations();
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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NSString* p = toNSString(CN1_THREAD_STATE_PASS_ARG path);
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NSString* absPath;
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if ([p isAbsolutePath]) {
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absPath = p;
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} else {
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NSString* cwd = [[NSFileManager defaultManager] currentDirectoryPath];
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absPath = [cwd stringByAppendingPathComponent:p];
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}
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NSString* canon = [absPath stringByStandardizingPath];
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JAVA_OBJECT res = fromNSString(CN1_THREAD_STATE_PASS_ARG canon);
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[pool release];
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finishedNativeAllocations();
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return res;
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}

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