| /* 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/Output_SJIS.h> |
| |
| extern unsigned short Unicode_to_JIS[]; |
| |
| extern int trie_lookup (unsigned short *trie, unsigned short key); |
| |
| static jint |
| convert_TO_SJIS (gnu::gcj::convert::Output_SJIS *encoder, |
| jchar *ptr, jint inlength) |
| { |
| int orig_inlength = inlength; |
| jint outbuf_length = encoder->buf->length; |
| for (;;) |
| { |
| if (encoder->count >= outbuf_length) |
| break; |
| if (encoder->pending >= 0) |
| { |
| elements(encoder->buf)[encoder->count++] = encoder->pending; |
| encoder->pending = -1; |
| continue; |
| } |
| if (inlength == 0) |
| break; |
| jchar ch = *ptr++; |
| inlength--; |
| unsigned short val = trie_lookup(Unicode_to_JIS, ch); |
| if (val < 0xFF) |
| { |
| if (val == 0xffff) |
| val = '?'; |
| } |
| else |
| { |
| int b1 = val >> 8; |
| int b2 = val & 0xff; |
| // From Lunde: "CJKV Informatio Processing", O'Reilly, 1999: |
| int rowOffset = b1 < 95 ? 112 : 176; |
| int cellOffset = (b1 & 1) != 0 ? (b2 > 95 ? 32 : 31) : 126; |
| b1 = ((b1 + 1) >> 1) + rowOffset; |
| b2 += cellOffset; |
| val = b1; |
| encoder->pending = b2; |
| } |
| elements(encoder->buf)[encoder->count++] = val; |
| } |
| return orig_inlength - inlength; |
| } |
| |
| jint |
| gnu::gcj::convert::Output_SJIS::write (jcharArray inbuffer, |
| jint inpos, jint inlength) |
| { |
| return convert_TO_SJIS(this, &elements(inbuffer)[inpos], inlength); |
| } |
| |
| jint |
| gnu::gcj::convert::Output_SJIS::write (jstring str, jint inpos, |
| jint inlength, jcharArray) |
| { |
| return convert_TO_SJIS(this, _Jv_GetStringChars(str)+inpos, inlength); |
| } |
