Adding upstream version 0.5.1
This commit is contained in:
206
libwc/uhc.c
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206
libwc/uhc.c
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#include "wc.h"
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#include "uhc.h"
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#include "wtf.h"
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#ifdef USE_UNICODE
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#include "ucs.h"
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#endif
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#define C0 WC_UHC_MAP_C0
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#define GL WC_UHC_MAP_GL
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#define C1 WC_UHC_MAP_C1
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#define LB WC_UHC_MAP_LB
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#define UB WC_UHC_MAP_UB
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wc_uint8 WC_UHC_MAP[ 0x100 ] = {
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C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0,
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C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0, C0,
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GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
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GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL, GL,
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GL, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB,
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LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, GL, GL, GL, GL, GL,
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GL, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB,
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LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, LB, GL, GL, GL, GL, C0,
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C1, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB,
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UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, UB, C1,
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};
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wc_wchar_t
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wc_uhc_to_cs128w(wc_wchar_t cc)
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{
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cc.code = WC_UHC_N(cc.code);
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if (cc.code < 0x4000)
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cc.ccs = WC_CCS_UHC_1;
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else {
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cc.ccs = WC_CCS_UHC_2;
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cc.code -= 0x4000;
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}
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cc.code = WC_N_CS128W(cc.code);
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return cc;
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}
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wc_wchar_t
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wc_cs128w_to_uhc(wc_wchar_t cc)
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{
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cc.code = WC_CS128W_N(cc.code);
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if (cc.ccs == WC_CCS_UHC_2)
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cc.code += 0x4000;
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cc.ccs = WC_CCS_UHC;
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cc.code = WC_N_UHC(cc.code);
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return cc;
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}
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wc_uint32
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wc_uhc_to_N(wc_uint32 c)
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{
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if (c <= 0xA1A0) /* 0x8141 - 0xA1A0 */
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return WC_UHC_N(c);
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if (c <= 0xA2A0) /* 0xA240 - 0xA2A0 */
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return WC_UHC_N(c) - 0x5E;
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if (c <= 0xA2E7) /* 0xA2E6 - 0xA2E7 */
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return WC_UHC_N(0xA2A0) - 0x5E + c - 0xA2E5;
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/* 0xA340 - 0xFEA0 */
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return WC_UHC_N(c) - ((c >> 8) - 0xA1) * 0x5E + 2;
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}
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Str
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wc_conv_from_uhc(Str is, wc_ces ces)
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{
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Str os;
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wc_uchar *sp = (wc_uchar *)is->ptr;
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wc_uchar *ep = sp + is->length;
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wc_uchar *p;
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int state = WC_UHC_NOSTATE;
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wc_uint32 uhc;
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for (p = sp; p < ep && *p < 0x80; p++)
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;
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if (p == ep)
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return is;
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os = Strnew_size(is->length);
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if (p > sp)
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Strcat_charp_n(os, (char *)is->ptr, (int)(p - sp));
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for (; p < ep; p++) {
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switch (state) {
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case WC_UHC_NOSTATE:
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switch (WC_UHC_MAP[*p]) {
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case UB:
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state = WC_UHC_MBYTE1;
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break;
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case C1:
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wtf_push_unknown(os, p, 1);
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break;
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default:
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Strcat_char(os, (char)*p);
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break;
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}
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break;
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case WC_UHC_MBYTE1:
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if (WC_UHC_MAP[*p] & LB) {
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uhc = ((wc_uint32)*(p-1) << 8) | *p;
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if (*(p-1) >= 0xA1 && *p >= 0xA1 &&
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uhc != 0xA2E6 && uhc != 0xA2E7)
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wtf_push(os, WC_CCS_KS_X_1001, uhc);
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else
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wtf_push(os, WC_CCS_UHC, uhc);
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} else
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wtf_push_unknown(os, p-1, 2);
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state = WC_UHC_NOSTATE;
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break;
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}
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}
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switch (state) {
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case WC_UHC_MBYTE1:
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wtf_push_unknown(os, p-1, 1);
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break;
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}
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return os;
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}
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void
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wc_push_to_uhc(Str os, wc_wchar_t cc, wc_status *st)
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{
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while (1) {
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switch (cc.ccs) {
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case WC_CCS_US_ASCII:
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Strcat_char(os, (char)cc.code);
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return;
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case WC_CCS_KS_X_1001:
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Strcat_char(os, (char)((cc.code >> 8) | 0x80));
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Strcat_char(os, (char)((cc.code & 0xff) | 0x80));
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return;
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case WC_CCS_UHC_1:
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case WC_CCS_UHC_2:
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cc = wc_cs128w_to_uhc(cc);
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case WC_CCS_UHC:
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Strcat_char(os, (char)(cc.code >> 8));
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Strcat_char(os, (char)(cc.code & 0xff));
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return;
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case WC_CCS_UNKNOWN_W:
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if (!WcOption.no_replace)
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Strcat_charp(os, WC_REPLACE_W);
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return;
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case WC_CCS_UNKNOWN:
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if (!WcOption.no_replace)
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Strcat_charp(os, WC_REPLACE);
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return;
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default:
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#ifdef USE_UNICODE
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if (WcOption.ucs_conv)
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cc = wc_any_to_any_ces(cc, st);
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else
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#endif
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cc.ccs = WC_CCS_IS_WIDE(cc.ccs) ? WC_CCS_UNKNOWN_W : WC_CCS_UNKNOWN;
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continue;
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}
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}
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}
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Str
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wc_char_conv_from_uhc(wc_uchar c, wc_status *st)
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{
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static Str os;
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static wc_uchar uhcu;
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wc_uint32 uhc;
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if (st->state == -1) {
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st->state = WC_UHC_NOSTATE;
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os = Strnew_size(8);
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}
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switch (st->state) {
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case WC_UHC_NOSTATE:
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switch (WC_UHC_MAP[c]) {
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case UB:
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uhcu = c;
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st->state = WC_UHC_MBYTE1;
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return NULL;
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case C1:
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break;
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default:
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Strcat_char(os, (char)c);
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break;
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}
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break;
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case WC_UHC_MBYTE1:
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if (WC_UHC_MAP[c] & LB) {
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uhc = ((wc_uint32)uhcu << 8) | c;
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if (uhcu >= 0xA1 && c >= 0xA1 &&
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uhc != 0xA2E6 && uhc != 0xA2E7)
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wtf_push(os, WC_CCS_KS_X_1001, uhc);
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else
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wtf_push(os, WC_CCS_UHC, uhc);
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}
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break;
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}
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st->state = -1;
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return os;
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}
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