2 * KANJI Code conversion routines.
5 #include <ptexenc/c-auto.h>
6 #include <ptexenc/kanjicnv.h>
8 boolean isEUCkanji1(int c)
11 return (0xa1 <= c && c <= 0xfe);
14 boolean isEUCkanji2(int c)
17 return (0xa1 <= c && c <= 0xfe);
20 boolean isSJISkanji1(int c)
23 return ((0x81 <= c && c <= 0x9f) || (0xe0 <= c && c <= 0xfc));
26 boolean isSJISkanji2(int c)
29 return (0x40 <= c && c <= 0xfc && c != 0x7f);
32 /* EUC <=> JIS X 0208 code conversion */
33 int EUCtoJIS(int kcode)
35 return (kcode & 0x7f7f);
38 int JIStoEUC(int kcode)
40 return (kcode | 0x8080);
43 /* Shift JIS <=> JIS Kanji code conversion */
44 int SJIStoJIS(int kcode)
50 byte1 -= ( byte1>=0xa0 ) ? 0xc1 : 0x81;
51 kcode = ((byte1<<1) + 0x21)<<8;
52 if ( byte2 >= 0x9f ) {
54 kcode |= (byte2 - 0x7e) & 0xff;
56 kcode |= (byte2 - ((byte2<=0x7e) ? 0x1f : 0x20 )) & 0xff;
61 int JIStoSJIS(int kcode)
68 nh = ((high-0x21)>>1) + 0x81;
69 if (nh > 0x9f) nh += 0x40;
75 if (isSJISkanji1(nh) && isSJISkanji2(nl)) {
82 /* Shift JIS <=> EUC Kanji code conversion */
83 int SJIStoEUC(int kcode)
85 return JIStoEUC(SJIStoJIS(kcode));
88 int EUCtoSJIS(int kcode)
90 return JIStoSJIS(EUCtoJIS(kcode));
93 /* KUTEN to JIS kanji code conversion */
94 int KUTENtoJIS(int kcode)
96 /* in case of undefined in kuten code table */
97 if (HI(kcode) == 0 || HI(kcode) > 95) return -1;
98 if (LO(kcode) == 0 || LO(kcode) > 95) return -1;
100 return kcode + 0x2020;