michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: // =======================================================================
michael@0: // Original Author: Yueheng Xu
michael@0: // email: yueheng.xu@intel.com
michael@0: // phone: (503)264-2248
michael@0: // Intel Corporation, Oregon, USA
michael@0: // Last Update: September 7, 1999
michael@0: // Revision History: 
michael@0: // 09/07/1999 - initial version.
michael@0: // 09/28/1999 - changed leftbyte and rightbyte from char to unsigned char 
michael@0: //              in struct DByte
michael@0: // 04/10/1999 - changed leftbyte. rightbyte to uint8_t in struct DByte;
michael@0: //              added table UnicodeToGBKTable[0x5200]
michael@0: //            
michael@0: // 05/16/2000 - added gUnicodeToGBKTableInitialized flag for optimization
michael@0: // ======================================================================================
michael@0: // Table GBKToUnicode[] maps the GBK code to its unicode.
michael@0: // The mapping data of this GBK table is obtained from 
michael@0: // ftp://ftp.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/WINDOWS/CP936.TXT
michael@0: // Frank Tang of Netscape wrote the original perl tool to re-align the 
michael@0: // mapping data into an 8-item per line format ( i.e. file cp936map.txt ).
michael@0: //
michael@0: // The valid GBK charset range: left byte is [0x81, 0xfe], right byte are
michael@0: // [0x40, 0x7e] and [0x80, 0xfe]. But for the convenience of index 
michael@0: // calculation, the table here has a single consecutive range of 
michael@0: // [0x40, 0xfe] for the right byte. Those invalid chars whose right byte 
michael@0: // is 0x7f will be mapped to undefined unicode 0xFFFF.
michael@0: //
michael@0: // 
michael@0: // Table UnicodeToGBK[] maps the unicode to GBK code. To reduce memory usage, we
michael@0: // only do Unicode to GBK table mapping for unicode between 0x4E00 and 0xA000; 
michael@0: // Others let converter to do search from table GBKToUnicode[]. If we want further
michael@0: // trade memory for performance, we can let more unicode to do table mapping to get
michael@0: // its GBK instead of searching table GBKToUnicode[]. 
michael@0: #ifndef _GBKU_H__
michael@0: #define _GBKU_H__
michael@0: 
michael@0: 
michael@0: #define  UCS2_NO_MAPPING ((char16_t) 0xfffd)
michael@0: #define UINT8_IN_RANGE(a, b, c) \
michael@0:  (((uint8_t)(a) <= (uint8_t)(b))&&((uint8_t)(b) <= (uint8_t)(c)))
michael@0: #define UNICHAR_IN_RANGE(a, b, c) \
michael@0:  (((char16_t)(a) <= (char16_t)(b))&&((char16_t)(b) <= (char16_t)(c)))
michael@0: #define CAST_CHAR_TO_UNICHAR(a) ((char16_t)((unsigned char)(a)))
michael@0: #define CAST_UNICHAR_TO_CHAR(a) ((char)a)
michael@0: 
michael@0: #define IS_ASCII(a) (0==(0xff80 & (a)))
michael@0: #define IS_GBK_EURO(c) ((char)0x80 == (c))
michael@0: #define UCS2_EURO  ((char16_t) 0x20ac)
michael@0: 
michael@0: #include "nsGBKConvUtil.h"
michael@0: 
michael@0: #endif /* _GBKU_H__ */