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