+
+ if (alpha_f&8 && c2 == 0) {
+ /* HTML Entity */
+ char *entity = 0;
+ switch (c1){
+ case '>': entity = ">"; break;
+ case '<': entity = "<"; break;
+ case '\"': entity = """; break;
+ case '&': entity = "&"; break;
+ }
+ if (entity){
+ while (*entity) (*o_zconv)(0, *entity++);
+ return;
+ }
+ }
+
+ if (alpha_f & 16) {
+ /* JIS X 0208 Katakana to JIS X 0201 Katakana */
+ if (c2 == 0x21) {
+ char c = 0;
+ switch (c1) {
+ case 0x23:
+ /* U+3002 (0x8142) Ideographic Full Stop -> U+FF61 (0xA1) Halfwidth Ideographic Full Stop */
+ c = 0xA1;
+ break;
+ case 0x56:
+ /* U+300C (0x8175) Left Corner Bracket -> U+FF62 (0xA2) Halfwidth Left Corner Bracket */
+ c = 0xA2;
+ break;
+ case 0x57:
+ /* U+300D (0x8176) Right Corner Bracket -> U+FF63 (0xA3) Halfwidth Right Corner Bracket */
+ c = 0xA3;
+ break;
+ case 0x22:
+ /* U+3001 (0x8141) Ideographic Comma -> U+FF64 (0xA4) Halfwidth Ideographic Comma */
+ c = 0xA4;
+ break;
+ case 0x26:
+ /* U+30FB (0x8145) Katakana Middle Dot -> U+FF65 (0xA5) Halfwidth Katakana Middle Dot */
+ c = 0xA5;
+ break;
+ case 0x3C:
+ /* U+30FC (0x815B) Katakana-Hiragana Prolonged Sound Mark -> U+FF70 (0xB0) Halfwidth Katakana-Hiragana Prolonged Sound Mark */
+ c = 0xB0;
+ break;
+ case 0x2B:
+ /* U+309B (0x814A) Katakana-Hiragana Voiced Sound Mark -> U+FF9E (0xDE) Halfwidth Katakana Voiced Sound Mark */
+ c = 0xDE;
+ break;
+ case 0x2C:
+ /* U+309C (0x814B) Katakana-Hiragana Semi-Voiced Sound Mark -> U+FF9F (0xDF) Halfwidth Katakana Semi-Voiced Sound Mark */
+ c = 0xDF;
+ break;
+ }
+ if (c) {
+ (*o_zconv)(X0201, c);
+ return;
+ }
+ } else if (c2 == 0x25) {
+ /* JISX0208 Katakana */
+ static const int fullwidth_to_halfwidth[] =
+ {
+ 0x0000, 0x2700, 0x3100, 0x2800, 0x3200, 0x2900, 0x3300, 0x2A00,
+ 0x3400, 0x2B00, 0x3500, 0x3600, 0x365E, 0x3700, 0x375E, 0x3800,
+ 0x385E, 0x3900, 0x395E, 0x3A00, 0x3A5E, 0x3B00, 0x3B5E, 0x3C00,
+ 0x3C5E, 0x3D00, 0x3D5E, 0x3E00, 0x3E5E, 0x3F00, 0x3F5E, 0x4000,
+ 0x405E, 0x4100, 0x415E, 0x2F00, 0x4200, 0x425E, 0x4300, 0x435E,
+ 0x4400, 0x445E, 0x4500, 0x4600, 0x4700, 0x4800, 0x4900, 0x4A00,
+ 0x4A5E, 0x4A5F, 0x4B00, 0x4B5E, 0x4B5F, 0x4C00, 0x4C5E, 0x4C5F,
+ 0x4D00, 0x4D5E, 0x4D5F, 0x4E00, 0x4E5E, 0x4E5F, 0x4F00, 0x5000,
+ 0x5100, 0x5200, 0x5300, 0x2C00, 0x5400, 0x2D00, 0x5500, 0x2E00,
+ 0x5600, 0x5700, 0x5800, 0x5900, 0x5A00, 0x5B00, 0x0000, 0x5C00,
+ 0x0000, 0x0000, 0x2600, 0x5D00, 0x335E, 0x0000, 0x0000, 0x0000,
+ 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000
+ };
+ if (fullwidth_to_halfwidth[c1-0x20]){
+ c2 = fullwidth_to_halfwidth[c1-0x20];
+ (*o_zconv)(X0201, c2>>8);
+ if (c2 & 0xFF) {
+ (*o_zconv)(X0201, c2&0xFF);
+ }
+ return;
+ }
+ }
+ }