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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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| 7084 | hidnplayr | 28 | #define KOI8_R 6 |
| 3479 | leency | 29 | |
| 30 | #include "cp866.h" |
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| 31 | #include "cp1251.h" |
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| 32 | #include "cp1252.h" |
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| 7084 | hidnplayr | 33 | #include "koi8_r.h" |
| 3479 | leency | 34 | #include "koi8_ru.h" |
| 35 | #include "iso8859_5.h" |
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| 36 | #include "utf8.h" |
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| 37 | |||
| 7057 | ashmew2 | 38 | int encoding(const char *someencoding) { |
| 6892 | ashmew2 | 39 | |
| 7057 | ashmew2 | 40 | char *what = strdup(someencoding); |
| 7005 | ashmew2 | 41 | /* Ignore //TRANSLIT or //IGNORE for now. */ |
| 42 | int i; |
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| 43 | for(i = 0; i < strlen(what); i++) { |
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| 44 | if(what[i] == '/') { |
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| 45 | what[i] = '\0'; |
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| 46 | break; |
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| 47 | } |
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| 48 | } |
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| 49 | |||
| 7045 | ashmew2 | 50 | if (!strcasecmp(what,"CP866")) return CP866; |
| 51 | if (!strcasecmp(what,"CP1251")) return CP1251; |
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| 7057 | ashmew2 | 52 | if (!strcasecmp(what,"windows-1251")) return CP1251; |
| 7045 | ashmew2 | 53 | if (!strcasecmp(what,"CP1252")) return CP1252; |
| 7084 | hidnplayr | 54 | if (!strcasecmp(what,"windows-1252")) return CP1252; |
| 55 | if (!strcasecmp(what,"KOI8-R")) return KOI8_R; |
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| 7045 | ashmew2 | 56 | if (!strcasecmp(what,"KOI8-RU")) return KOI8_RU; |
| 57 | if (!strcasecmp(what,"ISO8859-5")) return ISO8859_5; |
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| 58 | if (!strcasecmp(what,"UTF-8")) return UTF_8; |
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| 3479 | leency | 59 | return -1; |
| 60 | } |
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| 61 | |||
| 62 | iconv_t iconv_open(const char *tocode, const char *fromcode) { |
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| 63 | int to, from; |
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| 7044 | ashmew2 | 64 | |
| 3479 | leency | 65 | if ((to=encoding(tocode))==-1) return -1; |
| 66 | if ((from=encoding(fromcode))==-1) return -1; |
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| 7044 | ashmew2 | 67 | |
| 3479 | leency | 68 | to=to<<16&0xFFFF0000; |
| 69 | from=from&0xFFFF; |
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| 7057 | ashmew2 | 70 | |
| 3479 | leency | 71 | return to+from; |
| 72 | } |
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| 73 | |||
| 6882 | ashmew2 | 74 | int iconv_close(iconv_t icd) |
| 75 | { |
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| 76 | return 0; |
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| 77 | } |
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| 78 | |||
| 3479 | leency | 79 | size_t iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft, |
| 80 | char **outbuf, size_t *outbytesleft) |
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| 81 | { |
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| 7057 | ashmew2 | 82 | int n, to, from; |
| 83 | size_t count1,count2; |
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| 84 | unsigned int pwc; |
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| 85 | int converted,written; |
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| 3479 | leency | 86 | int (*mbtowc)(conv_t, ucs4_t *, const unsigned char *, int); |
| 7057 | ashmew2 | 87 | int (*wctomb)(conv_t, unsigned char *, ucs4_t, int); |
| 88 | |||
| 89 | to=cd>>16; |
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| 90 | from=cd&0xFFFF; |
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| 91 | |||
| 3479 | leency | 92 | switch (from) |
| 93 | { |
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| 94 | case CP866: mbtowc=cp866_mbtowc; break; |
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| 95 | case CP1251: mbtowc=cp1251_mbtowc; break; |
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| 96 | case CP1252: mbtowc=cp1252_mbtowc; break; |
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| 97 | case ISO8859_5: mbtowc=iso8859_5_mbtowc; break; |
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| 7084 | hidnplayr | 98 | case KOI8_R: mbtowc=koi8_r_mbtowc; break; |
| 3479 | leency | 99 | case KOI8_RU: mbtowc=koi8_ru_mbtowc; break; |
| 100 | case UTF_8: mbtowc=utf8_mbtowc; break; |
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| 7057 | ashmew2 | 101 | default: return (size_t)-1; |
| 3479 | leency | 102 | } |
| 7057 | ashmew2 | 103 | |
| 3479 | leency | 104 | switch (to) |
| 105 | { |
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| 106 | case CP866: wctomb=cp866_wctomb; break; |
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| 107 | case CP1251: wctomb=cp1251_wctomb; break; |
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| 108 | case CP1252: wctomb=cp1252_wctomb; break; |
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| 109 | case ISO8859_5: wctomb=iso8859_5_wctomb; break; |
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| 7084 | hidnplayr | 110 | case KOI8_R: wctomb=koi8_r_wctomb; break; |
| 3479 | leency | 111 | case KOI8_RU: wctomb=koi8_ru_wctomb; break; |
| 112 | case UTF_8: wctomb=utf8_wctomb; break; |
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| 7057 | ashmew2 | 113 | default: return (size_t)-1; |
| 3479 | leency | 114 | } |
| 6894 | ashmew2 | 115 | |
| 7057 | ashmew2 | 116 | count1=0; |
| 117 | count2=0; |
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| 6894 | ashmew2 | 118 | |
| 7057 | ashmew2 | 119 | /* Convert input multibyte char to wide character by using calls to mbtowc */ |
| 120 | /* Convert wide character to multibyte by calls to wctomb */ |
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| 121 | /* Handle errors as we go on converting to be as standard compliant as possible */ |
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| 122 | while(count1 < *inbytesleft) { |
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| 123 | unsigned char mbholder[] = { 0,0,0,0,0,0 }; |
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| 124 | |||
| 125 | int numbytes = (mbtowc)(0, &pwc,((*inbuf)+count1), *inbytesleft - count1); |
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| 126 | if(numbytes < 0) { |
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| 127 | /* errno = EILSEQ if invalid multibyte sequence encountered in input */ |
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| 128 | /* errno = EINVAL if input ends in the middle of a multibyte sequence */ |
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| 129 | |||
| 130 | switch(numbytes) { |
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| 131 | case RET_TOOFEW(0): |
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| 132 | errno = EINVAL; |
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| 133 | break; |
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| 134 | |||
| 135 | case RET_ILSEQ: |
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| 136 | errno = EILSEQ; |
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| 137 | break; |
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| 138 | } |
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| 139 | |||
| 140 | *inbytesleft -= count1; |
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| 141 | *outbytesleft -= count2; |
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| 142 | *inbuf += count1; |
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| 143 | *outbuf += count2; |
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| 144 | return (size_t) -1; |
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| 6894 | ashmew2 | 145 | } |
| 146 | |||
| 7057 | ashmew2 | 147 | /* Convert from wide to multibyte storing result in mbholder and num converted in numbytes2 */ |
| 148 | /* Pass the minimum amount of space we have, one from mbholder and one from remaining in outbuf */ |
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| 149 | int minspace = sizeof(mbholder) <= (*outbytesleft - count2) ? sizeof(mbholder) : (*outbytesleft - count2); |
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| 150 | |||
| 151 | int numbytes2 = (wctomb)(0, &mbholder[0], pwc, minspace); |
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| 152 | if(numbytes2 < 0) { |
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| 153 | switch(numbytes2) { |
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| 154 | case RET_ILUNI: |
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| 155 | errno = EILSEQ; |
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| 156 | break; |
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| 157 | case RET_TOOSMALL: |
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| 158 | errno = E2BIG; |
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| 159 | break; |
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| 160 | } |
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| 161 | |||
| 162 | *inbytesleft -= count1; |
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| 163 | *outbytesleft -= count2; |
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| 164 | *inbuf += count1; |
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| 165 | *outbuf += count2; |
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| 166 | |||
| 167 | return (size_t) -1; |
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| 168 | } |
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| 169 | |||
| 170 | int i; |
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| 171 | for(i = 0; i < numbytes2; i++) { |
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| 172 | *(*outbuf + count2 + i) = mbholder[i]; |
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| 173 | } |
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| 174 | |||
| 175 | count1+=numbytes; |
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| 176 | count2+=numbytes2; |
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| 6894 | ashmew2 | 177 | } |
| 7057 | ashmew2 | 178 | |
| 179 | /* Successfully converted everything, update the variables and return number of bytes converted */ |
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| 180 | *inbytesleft -= count1; |
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| 181 | *outbytesleft -= count2; |
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| 182 | *inbuf += count1; |
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| 183 | *outbuf += count2; |
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| 184 | |||
| 185 | return count1; |
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| 3479 | leency | 186 | } |
| 187 | |||
| 7057 | ashmew2 | 188 | /* int main() */ |
| 189 | /* { */ |
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| 190 | /* char *s;// ="вертолет"; */ |
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| 191 | /* char *z; */ |
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| 192 | /* //unsigned int pwc; */ |
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| 193 | /* iconv_t cd; */ |
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| 194 | /* size_t in, out; */ |
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| 3479 | leency | 195 | |
| 7057 | ashmew2 | 196 | /* FILE *infile; */ |
| 197 | /* char *fname = "file3.txt"; */ |
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| 3479 | leency | 198 | |
| 7057 | ashmew2 | 199 | /* size_t testmax = 100; */ |
| 200 | /* size_t test = 0; */ |
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| 3479 | leency | 201 | |
| 7057 | ashmew2 | 202 | /* infile = fopen(fname,"r"); */ |
| 3479 | leency | 203 | |
| 7057 | ashmew2 | 204 | /* fseek(infile, 0, SEEK_END); */ |
| 205 | /* size_t file_size = ftell(infile); */ |
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| 206 | /* rewind(infile); */ |
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| 3479 | leency | 207 | |
| 7057 | ashmew2 | 208 | /* char *buffer = (char*)malloc(file_size * sizeof(char)); */ |
| 209 | /* if (buffer == NULL) */ |
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| 210 | /* { */ |
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| 211 | /* fclose(infile); */ |
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| 212 | /* printf("Error allocating %d bytes.\n", file_size * sizeof(char)); */ |
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| 213 | /* return -1; */ |
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| 214 | /* } */ |
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| 215 | /* size_t bytes_read = fread(buffer, sizeof(char), file_size, infile); */ |
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| 216 | /* if (bytes_read != file_size) */ |
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| 217 | /* { */ |
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| 218 | /* /\* printf("Have read only %d bytes of %d.\n", bytes_read, file_size); *\/ */ |
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| 219 | /* free(buffer); */ |
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| 220 | /* fclose(infile); */ |
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| 221 | /* return -1; */ |
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| 222 | /* } */ |
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| 3479 | leency | 223 | |
| 7057 | ashmew2 | 224 | /* /\* in=strlen(buffer); *\/ */ |
| 225 | /* in = bytes_read; */ |
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| 226 | /* z=malloc(in+12000); */ |
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| 3479 | leency | 227 | |
| 7057 | ashmew2 | 228 | /* out=in-1000; */ |
| 229 | /* cd=iconv_open("UTF-8","UTF-8"); */ |
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| 230 | /* // printf("%x\n",cd); */ |
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| 231 | /* int t; */ |
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| 232 | /* char *zor = z; */ |
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| 233 | |||
| 234 | /* /\* for(t = 0; t < 27400; t++) *\/ */ |
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| 235 | /* /\* printf("0x%x,", buffer[t]); *\/ */ |
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| 236 | |||
| 237 | /* t=iconv(cd, &buffer, &in, &z, &out); */ |
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| 238 | /* /\* printf("\nResult after iconv(): %d", t); *\/ */ |
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| 239 | |||
| 240 | /* /\* for(t = 0; t < 24259; t++) *\/ */ |
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| 241 | /* /\* printf("%c", zor[t]); *\/ */ |
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| 242 | |||
| 243 | /* //for (;s |
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| 244 | /* } */ |
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| 245 | |||
| 246 | /* typedef struct */ |
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| 247 | /* { */ |
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| 248 | /* char *name; */ |
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| 249 | /* void *f; */ |
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| 250 | /* } export_t; */ |
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| 251 | |||
| 252 | /* char szStart[] = "START"; */ |
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| 253 | /* char szVersion[] = "version"; */ |
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| 254 | /* char sziconv_open[] = "iconv_open"; */ |
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| 255 | /* char sziconv[] = "iconv"; */ |
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| 256 | |||
| 257 | /* export_t EXPORTS[] __asm__("EXPORTS") = */ |
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| 258 | /* { */ |
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| 259 | /* { szStart, (void*)0x0 }, */ |
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| 260 | /* { szVersion, (void*)0x00010001 }, */ |
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| 261 | /* { sziconv_open, iconv_open }, */ |
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| 262 | /* { sziconv, iconv }, */ |
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| 263 | /* { NULL, NULL }, */ |
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| 264 | /* }; */ |