diff options
Diffstat (limited to 'mbbsd/convert.c')
-rw-r--r-- | mbbsd/convert.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/mbbsd/convert.c b/mbbsd/convert.c new file mode 100644 index 00000000..c7140d03 --- /dev/null +++ b/mbbsd/convert.c @@ -0,0 +1,66 @@ +/* $Id: convert.c 1374 2003-11-27 14:11:40Z victor $ */ +/* + * The following code is copied and modified from "autoconvert" with GPL. + */ + +#include "convert.h" + +#define BtoG_bad1 0xa1 +#define BtoG_bad2 0xf5 +#define GtoB_bad1 0xa1 +#define GtoB_bad2 0xbc + +char *hzconvert(char *, int *, char *, void (*dbcvrt)()); + +extern unsigned char GtoB[], BtoG[]; + +#define c1 (unsigned char)(s[0]) +#define c2 (unsigned char)(s[1]) + +static void g2b(char *s) +{ + unsigned int i; + + if ((c2 >= 0xa1) && (c2 <= 0xfe)) { + if ((c1 >= 0xa1) && (c1 <= 0xa9)) { + i = ((c1 - 0xa1) * 94 + (c2 - 0xa1)) * 2; + s[0] = GtoB[i++]; s[1] = GtoB[i]; + return; + } else if ((c1 >= 0xb0) && (c1 <= 0xf7)) { + i = ((c1 - 0xb0 + 9) * 94 + (c2 - 0xa1)) * 2; + s[0] = GtoB[i++]; s[1] = GtoB[i]; + return; + } + } + s[0] = GtoB_bad1; s[1] = GtoB_bad2; +} + +static void b2g(char *s) +{ + int i; + + if ((c1 >= 0xa1) && (c1 <= 0xf9)) { + if ((c2 >= 0x40) && (c2 <= 0x7e)) { + i = ((c1 - 0xa1) * 157 + (c2 - 0x40)) * 2; + s[0] = BtoG[i++]; s[1] = BtoG[i]; + return; + } else if ((c2 >= 0xa1) && (c2 <= 0xfe)) { + i = ((c1 - 0xa1) * 157 + (c2 - 0xa1) + 63) * 2; + s[0] = BtoG[i++]; s[1] = BtoG[i]; + return; + } + } + s[0] = BtoG_bad1; s[1] = BtoG_bad2; +} + +signed char *gb2big(unsigned char *s, int plen) +{ + unsigned char c = 0; + return hzconvert(s, &plen, &c, g2b); +} + +unsigned char *big2gb(unsigned char *s, int plen) +{ + unsigned char c = 0; + return hzconvert(s, &plen, &c, b2g); +} |