77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
/* Wide char wrapper for strtold
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* Revision history:
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* 6 Nov 2002 Initial version.
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*
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* Contributor: Danny Smith <dannysmith@users.sourceforege.net>
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*/
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/* This routine has been placed in the public domain.*/
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <locale.h>
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#include <wchar.h>
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#include <stdlib.h>
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#include <string.h>
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extern int __asctoe64(const char * __restrict__ ss,
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short unsigned int * __restrict__ y);
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static __inline__ unsigned int get_codepage (void)
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{
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char* cp;
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/*
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locale :: "lang[_country[.code_page]]"
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| ".code_page"
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*/
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if ((cp = strchr(setlocale(LC_CTYPE, NULL), '.')))
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return atoi( cp + 1);
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else
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return 0;
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}
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long double wcstold (const wchar_t * __restrict__ wcs, wchar_t ** __restrict__ wcse)
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{
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char * cs;
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int i;
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int lenldstr;
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union
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{
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unsigned short int us[6];
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long double ld;
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} xx;
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unsigned int cp = get_codepage ();
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/* Allocate enough room for (possibly) mb chars */
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cs = (char *) malloc ((wcslen(wcs)+1) * MB_CUR_MAX);
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if (cp == 0) /* C locale */
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{
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for (i = 0; (wcs[i] != 0) && wcs[i] <= 255; i++)
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cs[i] = (char) wcs[i];
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cs[i] = '\0';
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}
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else
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{
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int nbytes = -1;
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int mb_len = 0;
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/* loop through till we hit null or invalid character */
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for (i = 0; (wcs[i] != 0) && (nbytes != 0); i++)
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{
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nbytes = WideCharToMultiByte(cp, WC_COMPOSITECHECK | WC_SEPCHARS,
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wcs + i, 1, cs + mb_len, MB_CUR_MAX,
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NULL, NULL);
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mb_len += nbytes;
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}
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cs[mb_len] = '\0';
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}
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lenldstr = __asctoe64( cs, xx.us);
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free (cs);
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if (wcse)
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*wcse = (wchar_t*) wcs + lenldstr;
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return xx.ld;
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}
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