| /* Copyright (C) 1999 Free Software Foundation |
| |
| This file is part of libgcj. |
| |
| This software is copyrighted work licensed under the terms of the |
| Libgcj License. Please consult the file "LIBGCJ_LICENSE" for |
| details. */ |
| |
| #include <config.h> |
| #include <gcj/cni.h> |
| #include <gnu/gcj/convert/Input_SJIS.h> |
| |
| #define ERROR_CHAR 0xFFFD |
| |
| extern unsigned short JIS0208_to_Unicode[84][94]; |
| extern unsigned short JIS0212_to_Unicode[76][94]; |
| |
| jint |
| gnu::gcj::convert::Input_SJIS::read(jcharArray outbuffer, jint outpos, |
| jint count) |
| { |
| jint start_outpos = outpos; |
| for (;;) |
| { |
| if (outpos - start_outpos >= count) |
| break; |
| if (inpos >= inlength) |
| break; |
| int b = ((unsigned char*) elements(inbuffer))[inpos++]; |
| if (first_byte == 0) |
| { |
| if (b < 128) |
| { |
| #if 1 |
| // Technically, we should translate 0x5c to Yen symbol; |
| // in practice, it is not clear. |
| if (b == 0x5c) |
| b = 0x00A5; // Yen sign. |
| #endif |
| elements(outbuffer)[outpos++] = (char) b; |
| } |
| else if (b >= 0xA1 && b <= 0xDF) |
| { |
| b += 0xFF61 - 0xA1; |
| elements(outbuffer)[outpos++] = b; |
| } |
| else |
| first_byte = b; |
| } |
| else |
| { |
| // From Lunde: "CJKV Informatio Processing", O'Reilly, 1999, p 420: |
| bool adjust = b < 159; |
| int rowOffset = first_byte < 160 ? 112 : 176; |
| int cellOffset = adjust ? (b > 127 ? 32 : 31) : 126; |
| first_byte = ((first_byte - rowOffset) << 1) - adjust; |
| b -= cellOffset; |
| |
| first_byte -= 33; |
| b -= 33; |
| |
| if ((unsigned) first_byte >= 84 || (unsigned) b >= 94) |
| b = ERROR_CHAR; |
| else |
| { |
| b = JIS0208_to_Unicode[first_byte][b]; |
| if (b == 0) |
| b = ERROR_CHAR; |
| } |
| elements(outbuffer)[outpos++] = b; |
| |
| first_byte = 0; |
| } |
| } |
| return outpos - start_outpos; |
| } |
