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#include "wc.h"
#include "big5.h"
#include "search.h"
#include "wtf.h"
#ifdef USE_UNICODE
#include "ucs.h"
#endif
#define C0 WC_BIG5_MAP_C0
#define GL WC_BIG5_MAP_GL
#define C1 WC_BIG5_MAP_C1
#define LB WC_BIG5_MAP_LB
#define UB WC_BIG5_MAP_UB
wc_uint8 WC_BIG5_MAP[ 0x100 ] = {
C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0,
C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0,
GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB,
LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB,
LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB,
LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, C0,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1, C1,
C1, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, C1,
};
wc_wchar_t
wc_big5_to_cs94w(wc_wchar_t cc)
{
cc.code = WC_BIG5_N(cc.code);
if (cc.code < WC_C_BIG5_2_BASE)
cc.ccs = WC_CCS_BIG5_1;
else {
cc.ccs = WC_CCS_BIG5_2;
cc.code -= WC_C_BIG5_2_BASE;
}
cc.code = WC_N_CS94W(cc.code);
return cc;
}
wc_wchar_t
wc_cs94w_to_big5(wc_wchar_t cc)
{
cc.code = WC_CS94W_N(cc.code);
if (cc.ccs == WC_CCS_BIG5_2)
cc.code += WC_C_BIG5_2_BASE;
cc.code = WC_N_BIG5(cc.code);
cc.ccs = WC_CCS_BIG5;
return cc;
}
Str
wc_conv_from_big5(Str is, wc_ces ces)
{
Str os;
wc_uchar *sp = (wc_uchar *)is->ptr;
wc_uchar *ep = sp + is->length;
wc_uchar *p;
int state = WC_BIG5_NOSTATE;
for (p = sp; p < ep && *p < 0x80; p++)
;
if (p == ep)
return is;
os = Strnew_size(is->length);
if (p > sp)
Strcat_charp_n(os, (char *)is->ptr, (int)(p - sp));
for (; p < ep; p++) {
switch (state) {
case WC_BIG5_NOSTATE:
switch (WC_BIG5_MAP[*p]) {
case UB:
state = WC_BIG5_MBYTE1;
break;
case C1:
wtf_push_unknown(os, p, 1);
break;
default:
Strcat_char(os, (char)*p);
break;
}
break;
case WC_BIG5_MBYTE1:
if (WC_BIG5_MAP[*p] & LB)
wtf_push(os, WC_CCS_BIG5, ((wc_uint32)*(p-1) << 8) | *p);
else
wtf_push_unknown(os, p-1, 2);
state = WC_BIG5_NOSTATE;
break;
}
}
switch (state) {
case WC_BIG5_MBYTE1:
wtf_push_unknown(os, p-1, 1);
break;
}
return os;
}
void
wc_push_to_big5(Str os, wc_wchar_t cc, wc_status *st)
{
while (1) {
switch (cc.ccs) {
case WC_CCS_US_ASCII:
Strcat_char(os, (char)cc.code);
return;
case WC_CCS_BIG5_1:
case WC_CCS_BIG5_2:
cc = wc_cs94w_to_big5(cc);
case WC_CCS_BIG5:
Strcat_char(os, (char)(cc.code >> 8));
Strcat_char(os, (char)(cc.code & 0xff));
return;
case WC_CCS_UNKNOWN_W:
if (!WcOption.no_replace)
Strcat_charp(os, WC_REPLACE_W);
return;
case WC_CCS_UNKNOWN:
if (!WcOption.no_replace)
Strcat_charp(os, WC_REPLACE);
return;
default:
#ifdef USE_UNICODE
if (WcOption.ucs_conv)
cc = wc_any_to_any_ces(cc, st);
else
#endif
cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
continue;
}
}
}
Str
wc_char_conv_from_big5(wc_uchar c, wc_status *st)
{
static Str os;
static wc_uchar big5u;
if (st->state == -1) {
st->state = WC_BIG5_NOSTATE;
os = Strnew_size(8);
}
switch (st->state) {
case WC_BIG5_NOSTATE:
switch (WC_BIG5_MAP[c]) {
case UB:
big5u = c;
st->state = WC_BIG5_MBYTE1;
return NULL;
case C1:
break;
default:
Strcat_char(os, (char)c);
break;
}
break;
case WC_BIG5_MBYTE1:
if (WC_BIG5_MAP[c] & LB)
wtf_push(os, WC_CCS_BIG5, ((wc_uint32)big5u << 8) | c);
break;
}
st->state = -1;
return os;
}
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