| 1 | /* |
| 2 | ** Copyright 2000-2003 Double Precision, Inc. |
| 3 | ** See COPYING for distribution information. |
| 4 | ** |
| 5 | ** $Id: ibm864convert.c,v 1.2 2003/03/07 00:47:31 mrsam Exp $ |
| 6 | */ |
| 7 | |
| 8 | #include "unicode_config.h" |
| 9 | #include "unicode.h" |
| 10 | #include <string.h> |
| 11 | #include <stdlib.h> |
| 12 | |
| 13 | /* IBM864 has this pesky 0x25 mapping charsets all share the same functions */ |
| 14 | |
| 15 | unicode_char *unicode_ibm864_c2u(const char *str, int *err, |
| 16 | const unicode_char *table) |
| 17 | { |
| 18 | size_t l=strlen(str); |
| 19 | unicode_char *p=(unicode_char *)malloc((l+1) * sizeof(unicode_char)); |
| 20 | |
| 21 | if (err) |
| 22 | *err= -1; |
| 23 | |
| 24 | if (!p) |
| 25 | return (0); |
| 26 | |
| 27 | for (l=0; str[l]; l++) |
| 28 | { |
| 29 | unicode_char c=table[(unsigned char)str[l]]; |
| 30 | |
| 31 | if (!c) |
| 32 | { |
| 33 | if (err) |
| 34 | { |
| 35 | *err=l; |
| 36 | free(p); |
| 37 | return (0); |
| 38 | } |
| 39 | c=(int)(unsigned char)str[l]; |
| 40 | } |
| 41 | p[l]=c; |
| 42 | } |
| 43 | p[l]=0; |
| 44 | return (p); |
| 45 | } |
| 46 | |
| 47 | |
| 48 | char *unicode_ibm864_u2c(const unicode_char *uc, int *errflag, |
| 49 | const unicode_char *tab) |
| 50 | { |
| 51 | size_t l; |
| 52 | char *p; |
| 53 | |
| 54 | for (l=0; uc[l]; l++) |
| 55 | ; |
| 56 | |
| 57 | if (errflag) *errflag= -1; |
| 58 | p=malloc(l+1); |
| 59 | if (!p) |
| 60 | return (0); |
| 61 | |
| 62 | for (l=0; uc[l]; l++) |
| 63 | { |
| 64 | int c; |
| 65 | unicode_char ucc=uc[l]; |
| 66 | |
| 67 | /* First, guess */ |
| 68 | |
| 69 | if (tab[ ucc & 0xFF ] == uc[l]) |
| 70 | c=(int)(ucc & 0xFF); |
| 71 | else |
| 72 | { |
| 73 | for (c=0; c<256; c++) |
| 74 | if (tab[c] == uc[l]) |
| 75 | break; |
| 76 | if (c >= 256) |
| 77 | { |
| 78 | if (errflag) |
| 79 | { |
| 80 | *errflag=l; |
| 81 | free(p); |
| 82 | return (0); |
| 83 | } |
| 84 | c=uc[l]; |
| 85 | } |
| 86 | } |
| 87 | if (c == 0) |
| 88 | c=255; |
| 89 | p[l]=(char)c; |
| 90 | } |
| 91 | p[l]=0; |
| 92 | return (p); |
| 93 | } |