377 lines
9.3 KiB
C
377 lines
9.3 KiB
C
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#include "wc.h"
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#include "gb18030.h"
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#include "search.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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#include "map/gb18030_ucs.map"
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#define C0 WC_GB18030_MAP_C0
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#define GL WC_GB18030_MAP_GL
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#define C1 WC_GB18030_MAP_C1
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#define LB WC_GB18030_MAP_LB
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#define UB WC_GB18030_MAP_UB
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#define L4 WC_GB18030_MAP_L4
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wc_uint8 WC_GB18030_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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L4, L4, L4, L4, L4, L4, L4, L4, L4, L4, GL, GL, GL, GL, GL, GL,
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LB, 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, LB, LB, LB, LB, LB,
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LB, 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, LB, LB, LB, LB, C0,
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LB, 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_gbk_ext_to_cs128w(wc_wchar_t cc)
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{
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cc.code = WC_GBK_N(cc.code);
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if (cc.code < 0x4000)
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cc.ccs = WC_CCS_GBK_EXT_1;
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else {
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cc.ccs = WC_CCS_GBK_EXT_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_gbk_ext(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_GBK_EXT_2)
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cc.code += 0x4000;
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cc.ccs = WC_CCS_GBK_EXT;
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cc.code = WC_N_GBK(cc.code);
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return cc;
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}
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static wc_ccs
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wc_gbk_or_gbk_ext(wc_uint16 code) {
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return wc_map3_range_search(code,
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gbk_ext_ucs_map, N_gbk_ext_ucs_map)
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? WC_CCS_GBK_EXT : WC_CCS_GBK;
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}
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#ifdef USE_UNICODE
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wc_uint32
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wc_gb18030_to_ucs(wc_wchar_t cc)
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{
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wc_map3 *map;
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switch (WC_CCS_SET(cc.ccs)) {
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case WC_CCS_GBK_EXT_1:
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case WC_CCS_GBK_EXT_2:
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cc = wc_cs128w_to_gbk_ext(cc);
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case WC_CCS_GBK_EXT:
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map = wc_map3_range_search((wc_uint16)cc.code,
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gbk_ext_ucs_map, N_gbk_ext_ucs_map);
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if (map)
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return map->code3 + WC_GBK_N(cc.code) - WC_GBK_N(map->code2);
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return WC_C_UCS4_ERROR;
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case WC_CCS_GB18030:
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break;
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default:
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return wc_any_to_ucs(cc);
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}
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if (cc.code >= WC_C_GB18030_UCS2 && cc.code <= WC_C_GB18030_UCS2_END) {
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int i, min = 0, max = N_ucs_gb18030_map - 1;
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cc.code = WC_GB18030_N(cc.code) - WC_GB18030_N(WC_C_GB18030_UCS2);
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if (cc.code >= ucs_gb18030_map[max].code3)
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i = max;
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else {
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while(1) {
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i = (min + max) / 2;
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if (min == max)
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break;
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if (cc.code < ucs_gb18030_map[i].code3)
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max = i - 1;
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else if (cc.code >= ucs_gb18030_map[i+1].code3)
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min = i + 1;
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else
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break;
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}
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}
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return ucs_gb18030_map[i].code + cc.code - ucs_gb18030_map[i].code3;
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}
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if (cc.code >= WC_C_GB18030_UCS4 && cc.code <= WC_C_GB18030_UCS4_END)
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return WC_GB18030_N(cc.code) - WC_GB18030_N(WC_C_GB18030_UCS4)
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+ 0x10000;
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return WC_C_UCS4_ERROR;
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}
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wc_wchar_t
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wc_ucs_to_gb18030(wc_uint32 ucs)
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{
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wc_wchar_t cc;
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wc_map3 *map;
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if (ucs <= WC_C_UCS2_END) {
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map = wc_map3_range_search((wc_uint16)ucs,
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ucs_gbk_ext_map, N_ucs_gbk_ext_map);
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if (map) {
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cc.code = WC_GBK_N(map->code3) + ucs - map->code;
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cc.code = WC_N_GBK(cc.code);
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cc.ccs = WC_CCS_GBK_EXT;
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return cc;
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}
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map = wc_map3_range_search((wc_uint16)ucs,
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ucs_gb18030_map, N_ucs_gb18030_map);
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if (map) {
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cc.code = map->code3 + ucs - map->code + WC_GB18030_N(WC_C_GB18030_UCS2);
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cc.code = WC_N_GB18030(cc.code);
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if (WcOption.gb18030_as_ucs)
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cc.ccs = WC_CCS_GB18030 | (wc_ucs_to_ccs(ucs) & ~WC_CCS_A_SET);
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else
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cc.ccs = WC_CCS_GB18030_W;
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return cc;
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}
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} else if (ucs <= WC_C_UNICODE_END) {
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cc.code = ucs - 0x10000 + WC_GB18030_N(WC_C_GB18030_UCS4);
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cc.code = WC_N_GB18030(cc.code);
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if (WcOption.gb18030_as_ucs)
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cc.ccs = WC_CCS_GB18030 | (wc_ucs_to_ccs(ucs) & ~WC_CCS_A_SET);
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else
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cc.ccs = WC_CCS_GB18030_W;
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return cc;
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}
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cc.ccs = WC_CCS_UNKNOWN;
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return cc;
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}
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#endif
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Str
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wc_conv_from_gb18030(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_GB18030_NOSTATE;
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wc_uint32 gbk;
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wc_wchar_t cc;
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#ifdef USE_UNICODE
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wc_uint32 ucs;
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#endif
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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_GB18030_NOSTATE:
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switch (WC_GB18030_MAP[*p]) {
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case UB:
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state = WC_GB18030_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_GB18030_MBYTE1:
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if (WC_GB18030_MAP[*p] & LB) {
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gbk = ((wc_uint32)*(p-1) << 8) | *p;
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if (wc_gbk_or_gbk_ext(gbk) == WC_CCS_GBK_EXT)
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wtf_push(os, WC_CCS_GBK_EXT, gbk);
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else if (*(p-1) >= 0xA1 && *p >= 0xA1)
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wtf_push(os, wc_gb2312_or_gbk(gbk), gbk);
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else
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wtf_push(os, WC_CCS_GBK, gbk);
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} else if (WC_GB18030_MAP[*p] == L4) {
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state = WC_GB18030_MBYTE2;
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break;
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} else
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wtf_push_unknown(os, p-1, 2);
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state = WC_GB18030_NOSTATE;
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break;
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case WC_GB18030_MBYTE2:
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if (WC_GB18030_MAP[*p] == UB) {
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state = WC_GB18030_MBYTE3;
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break;
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} else
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wtf_push_unknown(os, p-2, 3);
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state = WC_GB18030_NOSTATE;
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break;
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case WC_GB18030_MBYTE3:
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if (WC_GB18030_MAP[*p] == L4) {
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cc.ccs = WC_CCS_GB18030_W;
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cc.code = ((wc_uint32)*(p-3) << 24)
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| ((wc_uint32)*(p-2) << 16)
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| ((wc_uint32)*(p-1) << 8)
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| *p;
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#ifdef USE_UNICODE
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if (WcOption.gb18030_as_ucs &&
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(ucs = wc_gb18030_to_ucs(cc)) != WC_C_UCS4_ERROR)
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wtf_push(os, WC_CCS_GB18030 | (wc_ucs_to_ccs(ucs) & ~WC_CCS_A_SET), cc.code);
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else
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#endif
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wtf_push(os, cc.ccs, cc.code);
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} else
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wtf_push_unknown(os, p-3, 4);
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state = WC_GB18030_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_GB18030_MBYTE1:
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wtf_push_unknown(os, p-1, 1);
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break;
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case WC_GB18030_MBYTE2:
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wtf_push_unknown(os, p-2, 2);
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break;
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case WC_GB18030_MBYTE3:
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wtf_push_unknown(os, p-3, 3);
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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_gb18030(Str os, wc_wchar_t cc, wc_status *st)
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{
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while (1) {
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switch (WC_CCS_SET(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_GB_2312:
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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_GBK_1:
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case WC_CCS_GBK_2:
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cc = wc_cs128w_to_gbk(cc);
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case WC_CCS_GBK:
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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_GBK_EXT_1:
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case WC_CCS_GBK_EXT_2:
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cc = wc_cs128w_to_gbk(cc);
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case WC_CCS_GBK_EXT:
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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_GB18030:
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Strcat_char(os, (char)((cc.code >> 24) & 0xff));
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Strcat_char(os, (char)((cc.code >> 16) & 0xff));
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Strcat_char(os, (char)((cc.code >> 8) & 0xff));
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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_gb18030(wc_uchar c, wc_status *st)
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{
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static Str os;
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static wc_uchar gb[4];
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wc_uint32 gbk;
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wc_wchar_t cc;
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#ifdef USE_UNICODE
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wc_uint32 ucs;
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#endif
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if (st->state == -1) {
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st->state = WC_GB18030_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_GB18030_NOSTATE:
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switch (WC_GB18030_MAP[c]) {
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case UB:
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gb[0] = c;
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st->state = WC_GB18030_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_GB18030_MBYTE1:
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if (WC_GB18030_MAP[c] & LB) {
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gbk = ((wc_uint32)gb[0] << 8) | c;
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if (wc_gbk_or_gbk_ext(gbk) == WC_CCS_GBK_EXT)
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wtf_push(os, WC_CCS_GBK_EXT, gbk);
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else if (gb[0] >= 0xA1 && c >= 0xA1)
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wtf_push(os, wc_gb2312_or_gbk(gbk), gbk);
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else
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wtf_push(os, WC_CCS_GBK, gbk);
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} else if (WC_GB18030_MAP[c] == L4) {
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gb[1] = c;
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st->state = WC_GB18030_MBYTE2;
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return NULL;
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}
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break;
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case WC_GB18030_MBYTE2:
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if (WC_GB18030_MAP[c] == UB) {
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gb[2] = c;
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st->state = WC_GB18030_MBYTE3;
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return NULL;
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}
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break;
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case WC_GB18030_MBYTE3:
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if (WC_GB18030_MAP[c] == L4) {
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cc.ccs = WC_CCS_GB18030_W;
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cc.code = ((wc_uint32)gb[0] << 24)
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| ((wc_uint32)gb[1] << 16)
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| ((wc_uint32)gb[2] << 8)
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| c;
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#ifdef USE_UNICODE
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if (WcOption.gb18030_as_ucs &&
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(ucs = wc_gb18030_to_ucs(cc)) != WC_C_UCS4_ERROR)
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wtf_push(os, WC_CCS_GB18030 | (wc_ucs_to_ccs(ucs) & ~WC_CCS_A_SET), cc.code);
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else
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#endif
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wtf_push(os, cc.ccs, cc.code);
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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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