X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/43866e378188c25dd1e2208016ab3cbeb086ae6c..bd504ef0e0b883cdd7917b73b3574eb9ce669905:/bsd/hfs/hfs_encodinghint.c

diff --git a/bsd/hfs/hfs_encodinghint.c b/bsd/hfs/hfs_encodinghint.c
index 630779e24..94b926e9e 100644
--- a/bsd/hfs/hfs_encodinghint.c
+++ b/bsd/hfs/hfs_encodinghint.c
@@ -1,16 +1,19 @@
 /*
- * Copyright (c) 2001-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2001-2003 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  * This file contains Original Code and/or Modifications of Original Code
  * as defined in and that are subject to the Apple Public Source License
  * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
  * 
  * The Original Code and all software distributed under the License are
  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
@@ -20,11 +23,13 @@
  * Please see the License for the specific language governing rights and
  * limitations under the License.
  * 
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  */
+#if HFS
 
 #include <sys/param.h>
 #include <hfs/hfs_macos_defs.h>
+#include <hfs/hfs.h>
 
 
 /* CJK Mac Encoding Bits */
@@ -34,15 +39,18 @@
 #define CJK_CHINESE_SIMP	0x8
 #define CJK_ALL	            0xF
 
-#define CJK_CHINESE	    (CJK_CHINESE_TRAD | CJK_CHINESE_SIMP)
-#define CJK_KATAKANA	(CJK_JAPAN | CJK_CHINESE_SIMP | CJK_KOREAN)
+#define CJK_CHINESE    (CJK_CHINESE_TRAD | CJK_CHINESE_SIMP)
+#define CJK_KATAKANA   (CJK_JAPAN)
 
 
 /* Remember the last unique CJK bit */
 u_int8_t cjk_lastunique = 0;
 
-/* CJK encoding bias */
+/* Encoding bias */
 u_int32_t hfs_encodingbias = 0;
+int hfs_islatinbias = 0;
+
+extern lck_mtx_t  encodinglst_mutex;
 
 
 /* Map CJK bits to Mac encoding */
@@ -793,6 +801,14 @@ hfs_pickencoding(const u_int16_t *src, int len)
 				cjkstate = CJK_ALL;
 			continue;
 		}
+		if (hfs_islatinbias && ch >= 0x0300 && ch <= 0x0329) {
+			guess = hfs_encodingbias;
+			continue;
+		}
+		if (ch <= 0x03CE && ch >= 0x0384) {
+			guess = kTextEncodingMacGreek;
+			continue;
+		}
 		if (ch <= 0x0491 && ch >= 0x0401) {
 			guess = kTextEncodingMacCyrillic;
 			continue;
@@ -806,6 +822,35 @@ hfs_pickencoding(const u_int16_t *src, int len)
 		if (ch >= 0x0E00 && ch <= 0x0E5B) {
 			return kTextEncodingMacThai;
 		}
+		/* Catch a few Shift-JIS strays */
+		if (guess == 0 || guess == kTextEncodingMacUnicode) {
+			if (ch == 0x2010 || ch == 0x2014 || ch == 0x2015 || ch == 0x2016) {
+				guess = kTextEncodingMacJapanese;
+				if ((cjkstate == 0) || (cjkstate & CJK_JAPAN))
+					cjkstate = CJK_JAPAN;
+				else
+					cjkstate |= CJK_JAPAN;
+				continue;
+			}
+			if ((hfs_encodingbias == kTextEncodingMacJapanese) &&
+			    (ch == 0x00A2 || ch == 0x00A3 || ch == 0x00AC)) {
+				guess = kTextEncodingMacJapanese;
+				continue;
+			}
+			/* TM char depends on the Mac encoding used. */
+			if (ch == 0x2122) {
+				switch(hfs_encodingbias) {
+				case kTextEncodingMacJapanese:
+				case kTextEncodingMacChineseTrad:
+				case kTextEncodingMacKorean:
+				case kTextEncodingMacGreek:
+				case kTextEncodingMacThai:
+				case kTextEncodingMacChineseSimp:
+					guess = hfs_encodingbias;
+					break;
+				}
+			}
+		}
 		if (guess == 0 && ch > 0x2122) {
 			guess = kTextEncodingMacUnicode;
 		}
@@ -853,3 +898,50 @@ hfs_pickencoding(const u_int16_t *src, int len)
 }
 
 
+__private_extern__
+u_int32_t
+hfs_getencodingbias(void)
+{
+	return (hfs_encodingbias);
+}
+
+
+__private_extern__
+void
+hfs_setencodingbias(u_int32_t bias)
+{
+	lck_mtx_lock(&encodinglst_mutex);
+
+	hfs_encodingbias = bias;
+
+	switch (bias) {
+	case kTextEncodingMacRoman:
+	case kTextEncodingMacCentralEurRoman:
+	case kTextEncodingMacTurkish:
+	case kTextEncodingMacCroatian:
+	case kTextEncodingMacIcelandic:
+	case kTextEncodingMacRomanian:
+		hfs_islatinbias = 1;
+		break;
+	default:
+		hfs_islatinbias = 0;
+		break;					
+	}
+
+	lck_mtx_unlock(&encodinglst_mutex);
+}
+
+#else /* not HFS - temp workaround until 4277828 is fixed */
+/* stubs for exported routines that aren't present when we build kernel without HFS */
+
+#include <sys/types.h>
+
+u_int32_t hfs_pickencoding(u_int16_t *src, int len);
+
+u_int32_t hfs_pickencoding(__unused u_int16_t *src, __unused int len)
+{
+	return(0);
+}
+
+#endif /* HFS */
+