diff options
Diffstat (limited to 'gcc-4.7/libjava/gnu/gcj/convert/natInput_SJIS.cc')
| -rw-r--r-- | gcc-4.7/libjava/gnu/gcj/convert/natInput_SJIS.cc | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/gcc-4.7/libjava/gnu/gcj/convert/natInput_SJIS.cc b/gcc-4.7/libjava/gnu/gcj/convert/natInput_SJIS.cc new file mode 100644 index 000000000..c7f11ade0 --- /dev/null +++ b/gcc-4.7/libjava/gnu/gcj/convert/natInput_SJIS.cc @@ -0,0 +1,76 @@ +/* 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; +} |