#include #include #include typedef int conv_t; typedef unsigned int ucs4_t; typedef int iconv_t; /* Return code if invalid input after a shift sequence of n bytes was read. (xxx_mbtowc) */ #define RET_SHIFT_ILSEQ(n) (-1-2*(n)) /* Return code if invalid. (xxx_mbtowc) */ #define RET_ILSEQ RET_SHIFT_ILSEQ(0) /* Return code if only a shift sequence of n bytes was read. (xxx_mbtowc) */ #define RET_TOOFEW(n) (-2-2*(n)) /* Return code if invalid. (xxx_wctomb) */ #define RET_ILUNI -1 /* Return code if output buffer is too small. (xxx_wctomb, xxx_reset) */ #define RET_TOOSMALL -2 #define CP866 0 #define CP1251 1 #define CP1252 2 #define KOI8_RU 3 #define ISO8859_5 4 #define UTF_8 5 #include "cp866.h" #include "cp1251.h" #include "cp1252.h" #include "koi8_ru.h" #include "iso8859_5.h" #include "utf8.h" int encoding(const char *someencoding) { char *what = strdup(someencoding); /* Ignore //TRANSLIT or //IGNORE for now. */ int i; for(i = 0; i < strlen(what); i++) { if(what[i] == '/') { what[i] = '\0'; break; } } if (!strcasecmp(what,"CP866")) return CP866; if (!strcasecmp(what,"CP1251")) return CP1251; if (!strcasecmp(what,"windows-1251")) return CP1251; if (!strcasecmp(what,"windows-1252")) return CP1252; if (!strcasecmp(what,"CP1252")) return CP1252; if (!strcasecmp(what,"KOI8-RU")) return KOI8_RU; if (!strcasecmp(what,"ISO8859-5")) return ISO8859_5; if (!strcasecmp(what,"UTF-8")) return UTF_8; return -1; } iconv_t iconv_open(const char *tocode, const char *fromcode) { int to, from; if ((to=encoding(tocode))==-1) return -1; if ((from=encoding(fromcode))==-1) return -1; to=to<<16&0xFFFF0000; from=from&0xFFFF; return to+from; } int iconv_close(iconv_t icd) { return 0; } size_t iconv(iconv_t cd, const char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft) { int n, to, from; size_t count1,count2; unsigned int pwc; int converted,written; int (*mbtowc)(conv_t, ucs4_t *, const unsigned char *, int); int (*wctomb)(conv_t, unsigned char *, ucs4_t, int); to=cd>>16; from=cd&0xFFFF; switch (from) { case CP866: mbtowc=cp866_mbtowc; break; case CP1251: mbtowc=cp1251_mbtowc; break; case CP1252: mbtowc=cp1252_mbtowc; break; case ISO8859_5: mbtowc=iso8859_5_mbtowc; break; case KOI8_RU: mbtowc=koi8_ru_mbtowc; break; case UTF_8: mbtowc=utf8_mbtowc; break; default: return (size_t)-1; } switch (to) { case CP866: wctomb=cp866_wctomb; break; case CP1251: wctomb=cp1251_wctomb; break; case CP1252: wctomb=cp1252_wctomb; break; case ISO8859_5: wctomb=iso8859_5_wctomb; break; case KOI8_RU: wctomb=koi8_ru_wctomb; break; case UTF_8: wctomb=utf8_wctomb; break; default: return (size_t)-1; } count1=0; count2=0; /* Convert input multibyte char to wide character by using calls to mbtowc */ /* Convert wide character to multibyte by calls to wctomb */ /* Handle errors as we go on converting to be as standard compliant as possible */ while(count1 < *inbytesleft) { unsigned char mbholder[] = { 0,0,0,0,0,0 }; int numbytes = (mbtowc)(0, &pwc,((*inbuf)+count1), *inbytesleft - count1); if(numbytes < 0) { /* errno = EILSEQ if invalid multibyte sequence encountered in input */ /* errno = EINVAL if input ends in the middle of a multibyte sequence */ switch(numbytes) { case RET_TOOFEW(0): errno = EINVAL; break; case RET_ILSEQ: errno = EILSEQ; break; } *inbytesleft -= count1; *outbytesleft -= count2; *inbuf += count1; *outbuf += count2; return (size_t) -1; } /* Convert from wide to multibyte storing result in mbholder and num converted in numbytes2 */ /* Pass the minimum amount of space we have, one from mbholder and one from remaining in outbuf */ int minspace = sizeof(mbholder) <= (*outbytesleft - count2) ? sizeof(mbholder) : (*outbytesleft - count2); int numbytes2 = (wctomb)(0, &mbholder[0], pwc, minspace); if(numbytes2 < 0) { switch(numbytes2) { case RET_ILUNI: errno = EILSEQ; break; case RET_TOOSMALL: errno = E2BIG; break; } *inbytesleft -= count1; *outbytesleft -= count2; *inbuf += count1; *outbuf += count2; return (size_t) -1; } int i; for(i = 0; i < numbytes2; i++) { *(*outbuf + count2 + i) = mbholder[i]; } count1+=numbytes; count2+=numbytes2; } /* Successfully converted everything, update the variables and return number of bytes converted */ *inbytesleft -= count1; *outbytesleft -= count2; *inbuf += count1; *outbuf += count2; return count1; } /* int main() */ /* { */ /* char *s;// ="вертолет"; */ /* char *z; */ /* //unsigned int pwc; */ /* iconv_t cd; */ /* size_t in, out; */ /* FILE *infile; */ /* char *fname = "file3.txt"; */ /* size_t testmax = 100; */ /* size_t test = 0; */ /* infile = fopen(fname,"r"); */ /* fseek(infile, 0, SEEK_END); */ /* size_t file_size = ftell(infile); */ /* rewind(infile); */ /* char *buffer = (char*)malloc(file_size * sizeof(char)); */ /* if (buffer == NULL) */ /* { */ /* fclose(infile); */ /* printf("Error allocating %d bytes.\n", file_size * sizeof(char)); */ /* return -1; */ /* } */ /* size_t bytes_read = fread(buffer, sizeof(char), file_size, infile); */ /* if (bytes_read != file_size) */ /* { */ /* /\* printf("Have read only %d bytes of %d.\n", bytes_read, file_size); *\/ */ /* free(buffer); */ /* fclose(infile); */ /* return -1; */ /* } */ /* /\* in=strlen(buffer); *\/ */ /* in = bytes_read; */ /* z=malloc(in+12000); */ /* out=in-1000; */ /* cd=iconv_open("UTF-8","UTF-8"); */ /* // printf("%x\n",cd); */ /* int t; */ /* char *zor = z; */ /* /\* for(t = 0; t < 27400; t++) *\/ */ /* /\* printf("0x%x,", buffer[t]); *\/ */ /* t=iconv(cd, &buffer, &in, &z, &out); */ /* /\* printf("\nResult after iconv(): %d", t); *\/ */ /* /\* for(t = 0; t < 24259; t++) *\/ */ /* /\* printf("%c", zor[t]); *\/ */ /* //for (;s