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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 7045 | ashmew2 | 1 | #include |
| 7057 | ashmew2 | 2 | #include |
| 3 | #include |
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| 3479 | leency | 4 | |
| 5 | typedef int conv_t; |
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| 6 | typedef unsigned int ucs4_t; |
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| 7 | typedef int iconv_t; |
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| 8 | |||
| 9 | /* Return code if invalid input after a shift sequence of n bytes was read. |
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| 10 | (xxx_mbtowc) */ |
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| 11 | #define RET_SHIFT_ILSEQ(n) (-1-2*(n)) |
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| 12 | /* Return code if invalid. (xxx_mbtowc) */ |
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| 13 | #define RET_ILSEQ RET_SHIFT_ILSEQ(0) |
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| 14 | /* Return code if only a shift sequence of n bytes was read. (xxx_mbtowc) */ |
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| 15 | #define RET_TOOFEW(n) (-2-2*(n)) |
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| 16 | |||
| 17 | /* Return code if invalid. (xxx_wctomb) */ |
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| 18 | #define RET_ILUNI -1 |
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| 19 | /* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */ |
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| 20 | #define RET_TOOSMALL -2 |
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| 21 | |||
| 22 | #define CP866 0 |
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| 23 | #define CP1251 1 |
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| 24 | #define CP1252 2 |
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| 25 | #define KOI8_RU 3 |
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| 26 | #define ISO8859_5 4 |
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| 27 | #define UTF_8 5 |
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| 28 | |||
| 29 | #include "cp866.h" |
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| 30 | #include "cp1251.h" |
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| 31 | #include "cp1252.h" |
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| 32 | #include "koi8_ru.h" |
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| 33 | #include "iso8859_5.h" |
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| 34 | #include "utf8.h" |
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| 35 | |||
| 7057 | ashmew2 | 36 | int encoding(const char *someencoding) { |
| 6892 | ashmew2 | 37 | |
| 7057 | ashmew2 | 38 | char *what = strdup(someencoding); |
| 7005 | ashmew2 | 39 | /* Ignore //TRANSLIT or //IGNORE for now. */ |
| 40 | int i; |
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| 41 | for(i = 0; i < strlen(what); i++) { |
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| 42 | if(what[i] == '/') { |
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| 43 | what[i] = '\0'; |
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| 44 | break; |
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| 45 | } |
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| 46 | } |
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| 47 | |||
| 7045 | ashmew2 | 48 | if (!strcasecmp(what,"CP866")) return CP866; |
| 49 | if (!strcasecmp(what,"CP1251")) return CP1251; |
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| 7057 | ashmew2 | 50 | if (!strcasecmp(what,"windows-1251")) return CP1251; |
| 7045 | ashmew2 | 51 | if (!strcasecmp(what,"windows-1252")) return CP1252; |
| 52 | if (!strcasecmp(what,"CP1252")) return CP1252; |
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| 53 | if (!strcasecmp(what,"KOI8-RU")) return KOI8_RU; |
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| 7079 | ashmew2 | 54 | if (!strcasecmp(what,"KOI8-R")) return KOI8_RU; |
| 7045 | ashmew2 | 55 | if (!strcasecmp(what,"ISO8859-5")) return ISO8859_5; |
| 56 | if (!strcasecmp(what,"UTF-8")) return UTF_8; |
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| 3479 | leency | 57 | return -1; |
| 58 | } |
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| 59 | |||
| 60 | iconv_t iconv_open(const char *tocode, const char *fromcode) { |
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| 61 | int to, from; |
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| 7044 | ashmew2 | 62 | |
| 3479 | leency | 63 | if ((to=encoding(tocode))==-1) return -1; |
| 64 | if ((from=encoding(fromcode))==-1) return -1; |
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| 7044 | ashmew2 | 65 | |
| 3479 | leency | 66 | to=to<<16&0xFFFF0000; |
| 67 | from=from&0xFFFF; |
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| 7057 | ashmew2 | 68 | |
| 3479 | leency | 69 | return to+from; |
| 70 | } |
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| 71 | |||
| 6882 | ashmew2 | 72 | int iconv_close(iconv_t icd) |
| 73 | { |
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| 74 | return 0; |
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| 75 | } |
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| 76 | |||
| 3479 | leency | 77 | size_t iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft, |
| 78 | char **outbuf, size_t *outbytesleft) |
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| 79 | { |
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| 7057 | ashmew2 | 80 | int n, to, from; |
| 81 | size_t count1,count2; |
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| 82 | unsigned int pwc; |
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| 83 | int converted,written; |
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| 3479 | leency | 84 | int (*mbtowc)(conv_t, ucs4_t *, const unsigned char *, int); |
| 7057 | ashmew2 | 85 | int (*wctomb)(conv_t, unsigned char *, ucs4_t, int); |
| 86 | |||
| 87 | to=cd>>16; |
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| 88 | from=cd&0xFFFF; |
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| 89 | |||
| 3479 | leency | 90 | switch (from) |
| 91 | { |
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| 92 | case CP866: mbtowc=cp866_mbtowc; break; |
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| 93 | case CP1251: mbtowc=cp1251_mbtowc; break; |
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| 94 | case CP1252: mbtowc=cp1252_mbtowc; break; |
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| 95 | case ISO8859_5: mbtowc=iso8859_5_mbtowc; break; |
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| 96 | case KOI8_RU: mbtowc=koi8_ru_mbtowc; break; |
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| 97 | case UTF_8: mbtowc=utf8_mbtowc; break; |
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| 7057 | ashmew2 | 98 | default: return (size_t)-1; |
| 3479 | leency | 99 | } |
| 7057 | ashmew2 | 100 | |
| 3479 | leency | 101 | switch (to) |
| 102 | { |
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| 103 | case CP866: wctomb=cp866_wctomb; break; |
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| 104 | case CP1251: wctomb=cp1251_wctomb; break; |
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| 105 | case CP1252: wctomb=cp1252_wctomb; break; |
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| 106 | case ISO8859_5: wctomb=iso8859_5_wctomb; break; |
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| 107 | case KOI8_RU: wctomb=koi8_ru_wctomb; break; |
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| 108 | case UTF_8: wctomb=utf8_wctomb; break; |
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| 7057 | ashmew2 | 109 | default: return (size_t)-1; |
| 3479 | leency | 110 | } |
| 6894 | ashmew2 | 111 | |
| 7057 | ashmew2 | 112 | count1=0; |
| 113 | count2=0; |
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| 6894 | ashmew2 | 114 | |
| 7057 | ashmew2 | 115 | /* Convert input multibyte char to wide character by using calls to mbtowc */ |
| 116 | /* Convert wide character to multibyte by calls to wctomb */ |
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| 117 | /* Handle errors as we go on converting to be as standard compliant as possible */ |
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| 118 | while(count1 < *inbytesleft) { |
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| 119 | unsigned char mbholder[] = { 0,0,0,0,0,0 }; |
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| 120 | |||
| 121 | int numbytes = (mbtowc)(0, &pwc,((*inbuf)+count1), *inbytesleft - count1); |
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| 122 | if(numbytes < 0) { |
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| 123 | /* errno = EILSEQ if invalid multibyte sequence encountered in input */ |
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| 124 | /* errno = EINVAL if input ends in the middle of a multibyte sequence */ |
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| 125 | |||
| 126 | switch(numbytes) { |
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| 127 | case RET_TOOFEW(0): |
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| 128 | errno = EINVAL; |
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| 129 | break; |
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| 130 | |||
| 131 | case RET_ILSEQ: |
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| 132 | errno = EILSEQ; |
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| 133 | break; |
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| 134 | } |
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| 135 | |||
| 136 | *inbytesleft -= count1; |
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| 137 | *outbytesleft -= count2; |
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| 138 | *inbuf += count1; |
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| 139 | *outbuf += count2; |
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| 140 | return (size_t) -1; |
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| 6894 | ashmew2 | 141 | } |
| 142 | |||
| 7057 | ashmew2 | 143 | /* Convert from wide to multibyte storing result in mbholder and num converted in numbytes2 */ |
| 144 | /* Pass the minimum amount of space we have, one from mbholder and one from remaining in outbuf */ |
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| 145 | int minspace = sizeof(mbholder) <= (*outbytesleft - count2) ? sizeof(mbholder) : (*outbytesleft - count2); |
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| 146 | |||
| 147 | int numbytes2 = (wctomb)(0, &mbholder[0], pwc, minspace); |
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| 148 | if(numbytes2 < 0) { |
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| 149 | switch(numbytes2) { |
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| 150 | case RET_ILUNI: |
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| 151 | errno = EILSEQ; |
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| 152 | break; |
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| 153 | case RET_TOOSMALL: |
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| 154 | errno = E2BIG; |
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| 155 | break; |
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| 156 | } |
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| 157 | |||
| 158 | *inbytesleft -= count1; |
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| 159 | *outbytesleft -= count2; |
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| 160 | *inbuf += count1; |
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| 161 | *outbuf += count2; |
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| 162 | |||
| 163 | return (size_t) -1; |
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| 164 | } |
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| 165 | |||
| 166 | int i; |
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| 167 | for(i = 0; i < numbytes2; i++) { |
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| 168 | *(*outbuf + count2 + i) = mbholder[i]; |
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| 169 | } |
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| 170 | |||
| 171 | count1+=numbytes; |
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| 172 | count2+=numbytes2; |
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| 6894 | ashmew2 | 173 | } |
| 7057 | ashmew2 | 174 | |
| 175 | /* Successfully converted everything, update the variables and return number of bytes converted */ |
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| 176 | *inbytesleft -= count1; |
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| 177 | *outbytesleft -= count2; |
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| 178 | *inbuf += count1; |
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| 179 | *outbuf += count2; |
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| 180 | |||
| 181 | return count1; |
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| 3479 | leency | 182 | } |
| 183 | |||
| 7057 | ashmew2 | 184 | /* int main() */ |
| 185 | /* { */ |
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| 186 | /* char *s;// ="вертолет"; */ |
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| 187 | /* char *z; */ |
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| 188 | /* //unsigned int pwc; */ |
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| 189 | /* iconv_t cd; */ |
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| 190 | /* size_t in, out; */ |
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| 3479 | leency | 191 | |
| 7057 | ashmew2 | 192 | /* FILE *infile; */ |
| 193 | /* char *fname = "file3.txt"; */ |
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| 3479 | leency | 194 | |
| 7057 | ashmew2 | 195 | /* size_t testmax = 100; */ |
| 196 | /* size_t test = 0; */ |
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| 3479 | leency | 197 | |
| 7057 | ashmew2 | 198 | /* infile = fopen(fname,"r"); */ |
| 3479 | leency | 199 | |
| 7057 | ashmew2 | 200 | /* fseek(infile, 0, SEEK_END); */ |
| 201 | /* size_t file_size = ftell(infile); */ |
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| 202 | /* rewind(infile); */ |
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| 3479 | leency | 203 | |
| 7057 | ashmew2 | 204 | /* char *buffer = (char*)malloc(file_size * sizeof(char)); */ |
| 205 | /* if (buffer == NULL) */ |
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| 206 | /* { */ |
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| 207 | /* fclose(infile); */ |
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| 208 | /* printf("Error allocating %d bytes.\n", file_size * sizeof(char)); */ |
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| 209 | /* return -1; */ |
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| 210 | /* } */ |
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| 211 | /* size_t bytes_read = fread(buffer, sizeof(char), file_size, infile); */ |
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| 212 | /* if (bytes_read != file_size) */ |
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| 213 | /* { */ |
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| 214 | /* /\* printf("Have read only %d bytes of %d.\n", bytes_read, file_size); *\/ */ |
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| 215 | /* free(buffer); */ |
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| 216 | /* fclose(infile); */ |
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| 217 | /* return -1; */ |
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| 218 | /* } */ |
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| 3479 | leency | 219 | |
| 7057 | ashmew2 | 220 | /* /\* in=strlen(buffer); *\/ */ |
| 221 | /* in = bytes_read; */ |
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| 222 | /* z=malloc(in+12000); */ |
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| 3479 | leency | 223 | |
| 7057 | ashmew2 | 224 | /* out=in-1000; */ |
| 225 | /* cd=iconv_open("UTF-8","UTF-8"); */ |
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| 226 | /* // printf("%x\n",cd); */ |
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| 227 | /* int t; */ |
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| 228 | /* char *zor = z; */ |
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| 229 | |||
| 230 | /* /\* for(t = 0; t < 27400; t++) *\/ */ |
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| 231 | /* /\* printf("0x%x,", buffer[t]); *\/ */ |
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| 232 | |||
| 233 | /* t=iconv(cd, &buffer, &in, &z, &out); */ |
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| 234 | /* /\* printf("\nResult after iconv(): %d", t); *\/ */ |
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| 235 | |||
| 236 | /* /\* for(t = 0; t < 24259; t++) *\/ */ |
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| 237 | /* /\* printf("%c", zor[t]); *\/ */ |
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| 238 | |||
| 239 | /* //for (;s |
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| 240 | /* } */ |
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| 241 | |||
| 242 | /* typedef struct */ |
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| 243 | /* { */ |
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| 244 | /* char *name; */ |
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| 245 | /* void *f; */ |
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| 246 | /* } export_t; */ |
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| 247 | |||
| 248 | /* char szStart[] = "START"; */ |
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| 249 | /* char szVersion[] = "version"; */ |
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| 250 | /* char sziconv_open[] = "iconv_open"; */ |
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| 251 | /* char sziconv[] = "iconv"; */ |
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| 252 | |||
| 253 | /* export_t EXPORTS[] __asm__("EXPORTS") = */ |
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| 254 | /* { */ |
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| 255 | /* { szStart, (void*)0x0 }, */ |
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| 256 | /* { szVersion, (void*)0x00010001 }, */ |
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| 257 | /* { sziconv_open, iconv_open }, */ |
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| 258 | /* { sziconv, iconv }, */ |
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| 259 | /* { NULL, NULL }, */ |
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| 260 | /* }; */ |