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-rw-r--r--libwc/viet.c243
1 files changed, 243 insertions, 0 deletions
diff --git a/libwc/viet.c b/libwc/viet.c
new file mode 100644
index 0000000..c918d4c
--- /dev/null
+++ b/libwc/viet.c
@@ -0,0 +1,243 @@
+
+#include "wc.h"
+#include "viet.h"
+#include "wtf.h"
+#include "search.h"
+#ifdef USE_UNICODE
+#include "ucs.h"
+#endif
+#include "map/tcvn57123_tcvn5712.map"
+
+wc_uint8 wc_c0_tcvn57122_map[ 0x20 ] = {
+ 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+wc_uint8 wc_c0_viscii112_map[ 0x20 ] = {
+ 0, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0,
+};
+wc_uint8 wc_c0_vps2_map[ 0x20 ] = {
+ 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 0,
+};
+static wc_uint8 tcvn5712_precompose_map[ 0x100 ] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+/* A E I O */
+ 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1,
+/* U Y */
+ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+/* a e i o */
+ 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1,
+/* u y */
+ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+/* A( A^ E^ O^ O+ U+ a( a^ e^ o^ o+ u+ */
+ 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0, 0,
+/* ` ? ~ ' . */
+ 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+};
+static wc_uint8 cp1258_precompose_map[ 0x100 ] = {
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+/* A E I O */
+ 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1,
+/* U Y */
+ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+/* a e i o */
+ 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1,
+/* u y */
+ 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0,
+
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+/* A^ A( E^ ` */
+ 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0,
+/* ? O^ O+ U+ ~ */
+ 0, 0, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0,
+/* a^ a( e^ ' */
+ 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0,
+/* . o^ o+ u+ */
+ 0, 0, 2, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
+};
+
+wc_uint32
+wc_tcvn5712_precompose(wc_uchar c1, wc_uchar c2)
+{
+ if (tcvn5712_precompose_map[c1] == 1 && tcvn5712_precompose_map[c2] == 2)
+ return ((wc_uint32)c1 << 8) | c2;
+ else
+ return 0;
+}
+
+wc_wchar_t
+wc_tcvn57123_to_tcvn5712(wc_wchar_t cc)
+{
+ wc_map *map;
+
+ map = wc_map_search((wc_uint16)(cc.code & 0x7f7f),
+ tcvn57123_tcvn5712_map, N_tcvn57123_tcvn5712_map);
+ if (map) {
+ cc.ccs = (map->code2 < 0x20) ? WC_CCS_TCVN_5712_2 : WC_CCS_TCVN_5712_1;
+ cc.code = map->code2 | 0x80;
+ } else {
+ cc.ccs = WC_CCS_UNKNOWN;
+ }
+ return cc;
+}
+
+wc_uint32
+wc_cp1258_precompose(wc_uchar c1, wc_uchar c2)
+{
+ if (cp1258_precompose_map[c1] == 1 && cp1258_precompose_map[c2] == 2)
+ return ((wc_uint32)c1 << 8) | c2;
+ else
+ return 0;
+}
+
+Str
+wc_conv_from_viet(Str is, wc_ces ces)
+{
+ Str os;
+ wc_uchar *sp = (wc_uchar *)is->ptr;
+ wc_uchar *ep = sp + is->length;
+ wc_uchar *p;
+ wc_ccs ccs1 = WcCesInfo[WC_CCS_INDEX(ces)].gset[1].ccs;
+ wc_ccs ccs2 = WcCesInfo[WC_CCS_INDEX(ces)].gset[2].ccs;
+ wc_uint8 *map = NULL;
+
+ switch (ces) {
+ case WC_CES_TCVN_5712:
+ map = wc_c0_tcvn57122_map;
+ break;
+ case WC_CES_VISCII_11:
+ map = wc_c0_viscii112_map;
+ break;
+ case WC_CES_VPS:
+ map = wc_c0_vps2_map;
+ break;
+ }
+
+ wc_create_detect_map(ces, WC_FALSE);
+ for (p = sp; p < ep && ! WC_DETECT_MAP[*p]; p++)
+ ;
+ if (p == ep)
+ return is;
+ os = Strnew_size(is->length);
+ if (p > sp)
+ Strcat_charp_n(os, is->ptr, (int)(p - sp));
+
+ for (; p < ep; p++) {
+ if (*p & 0x80)
+ wtf_push(os, ccs1, (wc_uint32)*p);
+ else if (*p < 0x20 && map[*p])
+ wtf_push(os, ccs2, (wc_uint32)*p);
+ else
+ Strcat_char(os, (char)*p);
+ }
+ return os;
+}
+
+void
+wc_push_to_viet(Str os, wc_wchar_t cc, wc_status *st)
+{
+ wc_ccs ccs1 = st->ces_info->gset[1].ccs;
+ wc_ccs ccs2 = 0, ccs3 = 0;
+ wc_uint8 *map = NULL;
+
+ switch (st->ces_info->id) {
+ case WC_CES_CP1258:
+ ccs3 = st->ces_info->gset[2].ccs;
+ break;
+ case WC_CES_TCVN_5712:
+ map = wc_c0_tcvn57122_map;
+ ccs2 = st->ces_info->gset[2].ccs;
+ ccs3 = st->ces_info->gset[3].ccs;
+ break;
+ case WC_CES_VISCII_11:
+ map = wc_c0_viscii112_map;
+ ccs2 = st->ces_info->gset[2].ccs;
+ break;
+ case WC_CES_VPS:
+ map = wc_c0_vps2_map;
+ ccs2 = st->ces_info->gset[2].ccs;
+ break;
+ }
+
+ while (1) {
+ if (cc.ccs == ccs1) {
+ Strcat_char(os, (char)(cc.code | 0x80));
+ return;
+ } else if (cc.ccs == ccs2) {
+ Strcat_char(os, (char)(cc.code & 0x7f));
+ return;
+ } else if (cc.ccs == ccs3) {
+ Strcat_char(os, (char)((cc.code >> 8) & 0xff));
+ Strcat_char(os, (char)(cc.code & 0xff));
+ return;
+ }
+ switch (cc.ccs) {
+ case WC_CCS_US_ASCII:
+ if (cc.code < 0x20 && map && map[cc.code])
+ Strcat_char(os, ' ');
+ else
+ Strcat_char(os, (char)cc.code);
+ 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_viet(wc_uchar c, wc_status *st)
+{
+ Str os = Strnew_size(1);
+ wc_uint8 *map = NULL;
+
+ switch (st->ces_info->id) {
+ case WC_CES_TCVN_5712:
+ map = wc_c0_tcvn57122_map;
+ break;
+ case WC_CES_VISCII_11:
+ map = wc_c0_viscii112_map;
+ break;
+ case WC_CES_VPS:
+ map = wc_c0_vps2_map;
+ break;
+ }
+
+ if (c & 0x80)
+ wtf_push(os, st->ces_info->gset[1].ccs, (wc_uint32)c);
+ else if (c < 0x20 && map[c])
+ wtf_push(os, st->ces_info->gset[2].ccs, (wc_uint32)c);
+ else
+ Strcat_char(os, (char)c);
+ return os;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 17:50:46 +0000