qbig5codec.cpp File Reference

#include "qbig5codec.h"

Go to the source code of this file.

Classes
struct	B5Index
struct	B5Map
struct	Summary16

Macros
#define	InRange(c, lower, upper)   (((c) >= (lower)) && ((c) <= (upper)))
#define	IsFirstByte(c)   (InRange((c), 0x81, 0xFE))
#define	IsLatin(c)   ((c) < 0x80)
#define	IsSecondByte(c)   (IsSecondByteRange1(c) || IsSecondByteRange2(c))
#define	IsSecondByteRange1(c)   (InRange((c), 0x40, 0x7E))
#define	IsSecondByteRange2(c)   (InRange((c), 0xA1, 0xFE))
#define	QValidChar(u)   ((u) ? QChar((ushort)(u)) : QChar(QChar::ReplacementCharacter))

Functions
static int	qt_Big5hkscsToUnicode (const uchar *s, uint *pwc)
static int	qt_Big5ToUnicode (const uchar *buf, uint *u)
static int	qt_UnicodeToBig5 (ushort ch, uchar *buf)
static int	qt_UnicodeToBig5hkscs (uint wc, uchar *r)

Variables
static const B5Map	b5_8140_to_uc_map []
static const B5Map	b5_8E40_to_uc_map []
static const B5Map	b5_C6A1_to_uc_map []
static const B5Map	b5_FA40_to_uc_map []
static B5Index	b5_map_table [5]
static const uchar	big5hkscs_to_charset [24908][2]
static ushort const	big5hkscs_to_ucs []
static const Summary16	big5hkscs_uni2index_page00 [70]
static const Summary16	big5hkscs_uni2index_page1e [13]
static const Summary16	big5hkscs_uni2index_page20 [116]
static const Summary16	big5hkscs_uni2index_page200 [2335]
static const Summary16	big5hkscs_uni2index_page294 [32]
static const Summary16	big5hkscs_uni2index_page297 [251]
static const Summary16	big5hkscs_uni2index_page2e [1819]
static const Summary16	big5hkscs_uni2index_page2f8 [30]
static const Summary16	big5hkscs_uni2index_pagee0 [419]
static const Summary16	big5hkscs_uni2index_pagefe [31]
static const B5Map	uc_to_b5_map []

Macro Definition Documentation

InRange

#define InRange	(		c,
			lower,
			upper
	)		(((c) >= (lower)) && ((c) <= (upper)))

Definition at line 50 of file qbig5codec.cpp.

IsFirstByte

#define IsFirstByte

(

c

)

(InRange((c), 0x81, 0xFE))

Definition at line 52 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertToUnicode(), and QBig5hkscsCodec::convertToUnicode().

IsLatin

#define IsLatin

(

c

)

((c) < 0x80)

Definition at line 51 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertToUnicode(), and QBig5hkscsCodec::convertToUnicode().

IsSecondByte

#define IsSecondByte

(

c

)

(IsSecondByteRange1(c) || IsSecondByteRange2(c))

Definition at line 55 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertToUnicode(), and QBig5hkscsCodec::convertToUnicode().

IsSecondByteRange1

#define IsSecondByteRange1

(

c

)

(InRange((c), 0x40, 0x7E))

Definition at line 53 of file qbig5codec.cpp.

IsSecondByteRange2

#define IsSecondByteRange2

(

c

)

(InRange((c), 0xA1, 0xFE))

Definition at line 54 of file qbig5codec.cpp.

QValidChar

#define QValidChar

(

u

)

((u) ? QChar((ushort)(u)) : QChar(QChar::ReplacementCharacter))

Definition at line 57 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertToUnicode(), and QBig5hkscsCodec::convertToUnicode().

Function Documentation

qt_Big5hkscsToUnicode()

static int qt_Big5hkscsToUnicode ( const uchar *  s, uint *  pwc  )

static

Definition at line 4839 of file qbig5codec.cpp.

Referenced by QBig5hkscsCodec::convertToUnicode(), and qt_Big5ToUnicode().

{
    uchar c1 = s[0];
    if ((c1 >= 0x81 && c1 <= 0xfe)) {
        uchar c2 = s[1];
        if ((c2 >= 0x40 && c2 < 0x7f) || (c2 >= 0xa1 && c2 < 0xff)) {
            uint i = 157 * (c1 - 0x81) + (c2 - (c2 >= 0xa1 ? 0x62 : 0x40));
            ushort wc = 0xfffd;
            if (i < 19782)
                wc = big5hkscs_to_ucs[i];
            if (wc != 0xfffd) {
                *pwc = (uint) wc;
                return 2;
            }
        }
        return 0;
    } else if (c1 < 0x80) {
        *pwc = (uint) c1;
        return 1;
    }
    return 0;
}

qt_Big5ToUnicode()

static int qt_Big5ToUnicode ( const uchar *  buf, uint *  u  )

static

Definition at line 1667 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertToUnicode().

{
    //for this conversion only first 4 tables are used.
    for(int i = 0; i < 4; i++) {
        int start = 0;
        int end = b5_map_table[i].tableSize - 1;

        uint b5 = (buf[0] << 8) + buf[1];
        while (start <= end) {
            int middle = (end + start + 1)/2;
            if (b5_map_table[i].table[middle].x == b5) {
                *u = b5_map_table[i].table[middle].y;
                return 2;
            } else if (b5_map_table[i].table[middle].x > b5) {
                end = middle - 1;
            } else {
                start = middle + 1;
            }
        }
    }
    return qt_Big5hkscsToUnicode(buf, u);
}

qt_UnicodeToBig5()

static int qt_UnicodeToBig5 ( ushort  ch, uchar *  buf  )

static

Definition at line 1690 of file qbig5codec.cpp.

Referenced by QBig5Codec::convertFromUnicode().

{
    //all the tables are individually sorted on Y
    for(int i = 0; i < 5; i++) {
        int start = 0;
        int end = b5_map_table[i].tableSize - 1;

        while (start <= end) {
            int middle = (end + start + 1)/2;
            if (b5_map_table[i].table[middle].y == ch) {
                buf[0] = b5_map_table[i].table[middle].x >> 8;
                buf[1] = b5_map_table[i].table[middle].x & 0xff;
                return 2;
            } else if (b5_map_table[i].table[middle].y > ch) {
                end = middle - 1;
            } else {
                start = middle + 1;
            }
        }
    }
    return qt_UnicodeToBig5hkscs(ch, buf);
}

qt_UnicodeToBig5hkscs()

int qt_UnicodeToBig5hkscs ( uint  wc, uchar *  r  )

static

Definition at line 12731 of file qbig5codec.cpp.

Referenced by QBig5hkscsCodec::convertFromUnicode(), QFontBig5Codec::convertFromUnicode(), QFontBig5hkscsCodec::convertFromUnicode(), and qt_UnicodeToBig5().

{
    const Summary16 *summary = NULL;
    if (wc < 0x80) {
        r[0] = (uchar) wc;
        return 1;
    }
    if (wc < 0x0460)
        summary = &big5hkscs_uni2index_page00[(wc>>4)];
    else if (wc >= 0x1e00 && wc < 0x1ed0)
        summary = &big5hkscs_uni2index_page1e[(wc>>4)-0x1e0];
    else if (wc >= 0x2000 && wc < 0x2740)
        summary = &big5hkscs_uni2index_page20[(wc>>4)-0x200];
    else if (wc >= 0x2e00 && wc < 0x9fb0)
        summary = &big5hkscs_uni2index_page2e[(wc>>4)-0x2e0];
    else if (wc >= 0xe000 && wc < 0xfa30)
        summary = &big5hkscs_uni2index_pagee0[(wc>>4)-0xe00];
    else if (wc >= 0xfe00 && wc < 0xfff0)
        summary = &big5hkscs_uni2index_pagefe[(wc>>4)-0xfe0];
    else if (wc >= 0x20000 && wc < 0x291f0)
        summary = &big5hkscs_uni2index_page200[(wc>>4)-0x2000];
    else if (wc >= 0x29400 && wc < 0x29600)
        summary = &big5hkscs_uni2index_page294[(wc>>4)-0x2940];
    else if (wc >= 0x29700 && wc < 0x2a6b0)
        summary = &big5hkscs_uni2index_page297[(wc>>4)-0x2970];
    else if (wc >= 0x2f800 && wc < 0x2f9e0)
        summary = &big5hkscs_uni2index_page2f8[(wc>>4)-0x2f80];
    if (summary) {
        ushort used = summary->used;
        uint i = wc & 0x0f;
        if (used & ((ushort) 1 << i)) {
            const uchar *c;
            /* Keep in `used' only the bits 0..i-1. */
            used &= ((ushort) 1 << i) - 1;
            /* Add `summary->index' and the number of bits set in `used'. */
            used = (used & 0x5555) + ((used & 0xaaaa) >> 1);
            used = (used & 0x3333) + ((used & 0xcccc) >> 2);
            used = (used & 0x0f0f) + ((used & 0xf0f0) >> 4);
            used = (used & 0x00ff) + (used >> 8);
            c = big5hkscs_to_charset[summary->index + used];
            if (c [1] != 0) {
                r[0] = c[0];
                r[1] = c[1];
                return 2;
            } else {  // (c [1] == 0)
                r[0] = c[0];
                return 1;
            }
        }
    }
    return 0;
}

Variable Documentation

b5_8140_to_uc_map

const B5Map b5_8140_to_uc_map[]

static

Definition at line 82 of file qbig5codec.cpp.

b5_8E40_to_uc_map

const B5Map b5_8E40_to_uc_map[]

static

Definition at line 596 of file qbig5codec.cpp.

b5_C6A1_to_uc_map

const B5Map b5_C6A1_to_uc_map[]

static

Definition at line 1345 of file qbig5codec.cpp.

b5_FA40_to_uc_map

const B5Map b5_FA40_to_uc_map[]

static

Definition at line 1451 of file qbig5codec.cpp.

b5_map_table

B5Index b5_map_table[5]

static

Initial value:

= {
    {b5_8140_to_uc_map , sizeof(b5_8140_to_uc_map)/sizeof(B5Map)},
    {b5_8E40_to_uc_map , sizeof(b5_8E40_to_uc_map)/sizeof(B5Map)},
    {b5_C6A1_to_uc_map , sizeof(b5_C6A1_to_uc_map)/sizeof(B5Map)},
    {b5_FA40_to_uc_map , sizeof(b5_FA40_to_uc_map)/sizeof(B5Map)},
    {uc_to_b5_map , sizeof(uc_to_b5_map)/sizeof(B5Map)}
}

Definition at line 1659 of file qbig5codec.cpp.

big5hkscs_to_charset

const uchar big5hkscs_to_charset[24908][2]

static

Definition at line 4874 of file qbig5codec.cpp.

Referenced by qt_UnicodeToBig5hkscs().

big5hkscs_to_ucs

ushort const big5hkscs_to_ucs[]

static

Definition at line 2062 of file qbig5codec.cpp.

Referenced by qt_Big5hkscsToUnicode().

big5hkscs_uni2index_page00

const Summary16 big5hkscs_uni2index_page00[70]

static

Initial value:

= {
  
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 },
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0x0000 },
  {    0, 0x0000 }, {    0, 0x0000 }, {    0, 0xE7EE }, {   12, 0x87BF },
  {   23, 0xFFFF }, {   39, 0xFFFF }, {   55, 0xFFFF }, {   71, 0xFFFF },
  
  {   87, 0x0003 }, {   89, 0x0C0C }, {   93, 0x0800 }, {   94, 0x0000 },
  {   94, 0x3800 }, {   97, 0x0008 }, {   98, 0x0800 }, {   99, 0x0000 },
  {   99, 0x0000 }, {   99, 0x0000 }, {   99, 0x0000 }, {   99, 0x0000 },
  {   99, 0x6000 }, {  101, 0x1557 }, {  109, 0x0000 }, {  109, 0x0000 },
  
  {  109, 0x0000 }, {  109, 0x0000 }, {  109, 0x0000 }, {  109, 0x0000 },
  {  109, 0x0000 }, {  109, 0x0813 }, {  113, 0x0402 }, {  115, 0x0020 },
  {  116, 0x0408 }, {  118, 0x0000 }, {  118, 0x0000 }, {  118, 0x0000 },
  {  118, 0x2EC0 }, {  124, 0x0200 }, {  125, 0x0000 }, {  125, 0x0000 },
  
  {  125, 0x0020 }, {  126, 0x0000 }, {  126, 0x0000 }, {  126, 0x0000 },
  {  126, 0x0000 }, {  126, 0x0000 }, {  126, 0x0000 }, {  126, 0x0000 },
  {  126, 0x0000 }, {  126, 0xFFFE }, {  141, 0x03FB }, {  150, 0xFFFE },
  {  165, 0x03FB }, {  174, 0x0000 }, {  174, 0x0000 }, {  174, 0x0000 },
  
  {  174, 0x0002 }, {  175, 0xFFFF }, {  191, 0xFFFF }, {  207, 0xFFFF },
  {  223, 0xFFFF }, {  239, 0x0002 },
}

Definition at line 11105 of file qbig5codec.cpp.

big5hkscs_uni2index_page1e

const Summary16 big5hkscs_uni2index_page1e[13]

static

Initial value:

= {
  
  {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0x0000 },
  {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0x0000 },
  {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0x0000 }, {  240, 0xC000 },
  {  242, 0x0003 },
}

Definition at line 11130 of file qbig5codec.cpp.

big5hkscs_uni2index_page20

const Summary16 big5hkscs_uni2index_page20[116]

static

Definition at line 11137 of file qbig5codec.cpp.

big5hkscs_uni2index_page200

const Summary16 big5hkscs_uni2index_page200[2335]

static

Definition at line 11893 of file qbig5codec.cpp.

big5hkscs_uni2index_page294

const Summary16 big5hkscs_uni2index_page294[32]

static

Initial value:

= {
  
  { 24798, 0x0000 }, { 24798, 0x2000 }, { 24799, 0x0001 }, { 24800, 0x8008 },
  { 24802, 0x0100 }, { 24803, 0x0000 }, { 24803, 0x0000 }, { 24803, 0x0000 },
  { 24803, 0x0000 }, { 24803, 0x0000 }, { 24803, 0x0000 }, { 24803, 0x0000 },
  { 24803, 0x0000 }, { 24803, 0x0601 }, { 24806, 0x00A0 }, { 24808, 0x0000 },
  
  { 24808, 0x0000 }, { 24808, 0x0000 }, { 24808, 0x0000 }, { 24808, 0x0000 },
  { 24808, 0x0000 }, { 24808, 0x0000 }, { 24808, 0x0000 }, { 24808, 0x0000 },
  { 24808, 0x0000 }, { 24808, 0x4000 }, { 24809, 0x0000 }, { 24809, 0x0101 },
  { 24811, 0x0000 }, { 24811, 0x0080 }, { 24812, 0x0200 }, { 24813, 0x0010 },
}

Definition at line 12625 of file qbig5codec.cpp.

big5hkscs_uni2index_page297

const Summary16 big5hkscs_uni2index_page297[251]

static

Definition at line 12637 of file qbig5codec.cpp.

big5hkscs_uni2index_page2e

const Summary16 big5hkscs_uni2index_page2e[1819]

static

Definition at line 11176 of file qbig5codec.cpp.

big5hkscs_uni2index_page2f8

const Summary16 big5hkscs_uni2index_page2f8[30]

static

Initial value:

= {
  
  { 24897, 0x0000 }, { 24897, 0x0000 }, { 24897, 0x0020 }, { 24898, 0x0800 },
  { 24899, 0x0001 }, { 24900, 0x0000 }, { 24900, 0x0000 }, { 24900, 0x0100 },
  { 24901, 0x0000 }, { 24901, 0x0010 }, { 24902, 0x0040 }, { 24903, 0x0000 },
  { 24903, 0x2000 }, { 24904, 0x0000 }, { 24904, 0x0000 }, { 24904, 0x0000 },
  
  { 24904, 0x0000 }, { 24904, 0x0000 }, { 24904, 0x0000 }, { 24904, 0x0000 },
  { 24904, 0x0000 }, { 24904, 0x0000 }, { 24904, 0x0000 }, { 24904, 0x0000 },
  { 24904, 0x0000 }, { 24904, 0x0010 }, { 24905, 0x0000 }, { 24905, 0x1004 },
  { 24907, 0x0000 }, { 24907, 0x0010 },
}

Definition at line 12718 of file qbig5codec.cpp.

big5hkscs_uni2index_pagee0

const Summary16 big5hkscs_uni2index_pagee0[419]

static

Definition at line 11747 of file qbig5codec.cpp.

big5hkscs_uni2index_pagefe

const Summary16 big5hkscs_uni2index_pagefe[31]

static

Initial value:

= {
  
  { 23103, 0x0000 }, { 23103, 0x0000 }, { 23103, 0x0000 }, { 23103, 0xFFFB },
  { 23118, 0xFE1F }, { 23130, 0xFEF7 }, { 23144, 0x0F7F }, { 23155, 0x0000 },
  { 23155, 0x0000 }, { 23155, 0x0000 }, { 23155, 0x0000 }, { 23155, 0x0000 },
  { 23155, 0x0000 }, { 23155, 0x0000 }, { 23155, 0x0000 }, { 23155, 0x0000 },
  
  { 23155, 0xFFFE }, { 23170, 0xFFFF }, { 23186, 0xFFFF }, { 23202, 0xFFFF },
  { 23218, 0xFFFF }, { 23234, 0x7FFF }, { 23249, 0x0010 }, { 23250, 0x0000 },
  { 23250, 0x0000 }, { 23250, 0x0000 }, { 23250, 0x0000 }, { 23250, 0x0000 },
  { 23250, 0x0000 }, { 23250, 0x0000 }, { 23250, 0x203F },
}

Definition at line 11881 of file qbig5codec.cpp.

uc_to_b5_map

const B5Map uc_to_b5_map[]

static

Initial value:

= {
        {0xa2a4,0x2550},  {0xa2a5,0x255e},   {0xa2a7,0x2561},  {0xa2a6,0x256a},
        {0xa27e,0x256d},  {0xa2a1,0x256e},   {0xa2a3,0x256f},  {0xa2a2,0x2570}
}

Definition at line 1653 of file qbig5codec.cpp.