lcformat.c

这是一个开放源代码的与WINNT/WIN2K/WIN2003兼容的操作系统

INT WINAPI GetDateFormatA( LCID lcid, DWORD dwFlags, const SYSTEMTIME* lpTime,
                           LPCSTR lpFormat, LPSTR lpDateStr, INT cchOut)
{
  TRACE("(0x%04lx,0x%08lx,%p,%s,%p,%d)\n",lcid, dwFlags, lpTime,
        lpFormat, lpDateStr, cchOut);

  return NLS_GetDateTimeFormatA(lcid, dwFlags | DATE_DATEVARSONLY, lpTime,
                                lpFormat, lpDateStr, cchOut);
}


/******************************************************************************
 * GetDateFormatW	[KERNEL32.@]
 *
 * See GetDateFormatA.
 */
INT WINAPI GetDateFormatW(LCID lcid, DWORD dwFlags, const SYSTEMTIME* lpTime,
                          LPCWSTR lpFormat, LPWSTR lpDateStr, INT cchOut)
{
  TRACE("(0x%04lx,0x%08lx,%p,%S,%p,%d)\n", lcid, dwFlags, lpTime,
        lpFormat, lpDateStr, cchOut);

  return NLS_GetDateTimeFormatW(lcid, dwFlags|DATE_DATEVARSONLY, lpTime,
                                lpFormat, lpDateStr, cchOut);
}

/******************************************************************************
 *		GetTimeFormatA	[KERNEL32.@]
 *
 * Format a time for a given locale.
 *
 * PARAMS
 *  lcid      [I] Locale to format for
 *  dwFlags   [I] LOCALE_ and TIME_ flags from "winnls.h"
 *  lpTime    [I] Time to format
 *  lpFormat  [I] Formatting overrides
 *  lpTimeStr [O] Destination for formatted string
 *  cchOut    [I] Size of lpTimeStr, or 0 to calculate the resulting size
 *
 * NOTES
 *  - If lpFormat is NULL, lpszValue will be formatted according to the format
 *    details returned by GetLocaleInfoA() and modified by dwFlags.
 *  - lpFormat is a string of characters and formatting tokens. Any characters
 *    in the string are copied verbatim to lpTimeStr, with tokens being replaced
 *    by the time values they represent.
 *  - The following tokens have special meanings in a time format string:
 *|  Token  Meaning
 *|  -----  -------
 *|  h      Hours with no leading zero (12-hour clock)
 *|  hh     Hours with full two digits (12-hour clock)
 *|  H      Hours with no leading zero (24-hour clock)
 *|  HH     Hours with full two digits (24-hour clock)
 *|  m      Minutes with no leading zero
 *|  mm     Minutes with full two digits
 *|  s      Seconds with no leading zero
 *|  ss     Seconds with full two digits
 *|  t      Short time marker (e.g. "A" or "P")
 *|  tt     Long time marker (e.g. "AM", "PM")
 *  - To output any literal character that could be misidentified as a token,
 *    enclose it in single quotes.
 *  - The Ascii version of this function fails if lcid is Unicode only.
 *
 * RETURNS
 *  Success: The number of character written to lpTimeStr, or that would
 *           have been written, if cchOut is 0.
 *  Failure: 0. Use GetLastError() to determine the cause.
 */
INT WINAPI GetTimeFormatA(LCID lcid, DWORD dwFlags, const SYSTEMTIME* lpTime,
                          LPCSTR lpFormat, LPSTR lpTimeStr, INT cchOut)
{
  TRACE("(0x%04lx,0x%08lx,%p,%s,%p,%d)\n",lcid, dwFlags, lpTime,
        lpFormat, lpTimeStr, cchOut);

  return NLS_GetDateTimeFormatA(lcid, dwFlags|TIME_TIMEVARSONLY, lpTime,
                                lpFormat, lpTimeStr, cchOut);
}

/******************************************************************************
 *		GetTimeFormatW	[KERNEL32.@]
 *
 * See GetTimeFormatA.
 */
INT WINAPI GetTimeFormatW(LCID lcid, DWORD dwFlags, const SYSTEMTIME* lpTime,
                          LPCWSTR lpFormat, LPWSTR lpTimeStr, INT cchOut)
{
  TRACE("(0x%04lx,0x%08lx,%p,%S,%p,%d)\n",lcid, dwFlags, lpTime,
        lpFormat, lpTimeStr, cchOut);

  return NLS_GetDateTimeFormatW(lcid, dwFlags|TIME_TIMEVARSONLY, lpTime,
                                lpFormat, lpTimeStr, cchOut);
}

/**************************************************************************
 *              GetNumberFormatA	(KERNEL32.@)
 *
 * Format a number string for a given locale.
 *
 * PARAMS
 *  lcid        [I] Locale to format for
 *  dwFlags     [I] LOCALE_ flags from "winnls.h"
 *  lpszValue   [I] String to format
 *  lpFormat    [I] Formatting overrides
 *  lpNumberStr [O] Destination for formatted string
 *  cchOut      [I] Size of lpNumberStr, or 0 to calculate the resulting size
 *
 * NOTES
 *  - lpszValue can contain only '0' - '9', '-' and '.'.
 *  - If lpFormat is non-NULL, dwFlags must be 0. In this case lpszValue will
 *    be formatted according to the format details returned by GetLocaleInfoA().
 *  - This function rounds the number string if the number of decimals exceeds the
 *    locales normal number of decimal places.
 *  - If cchOut is 0, this function does not write to lpNumberStr.
 *  - The Ascii version of this function fails if lcid is Unicode only.
 *
 * RETURNS
 *  Success: The number of character written to lpNumberStr, or that would
 *           have been written, if cchOut is 0.
 *  Failure: 0. Use GetLastError() to determine the cause.
 */
INT WINAPI GetNumberFormatA(LCID lcid, DWORD dwFlags,
                            LPCSTR lpszValue,  const NUMBERFMTA *lpFormat,
                            LPSTR lpNumberStr, int cchOut)
{
  DWORD cp = CP_ACP;
  WCHAR szDec[8], szGrp[8], szIn[128], szOut[128];
  NUMBERFMTW fmt;
  const NUMBERFMTW *pfmt = NULL;
  INT iRet;

  TRACE("(0x%04lx,0x%08lx,%s,%p,%p,%d)\n", lcid, dwFlags, lpszValue,
        lpFormat, lpNumberStr, cchOut);

  if (NLS_IsUnicodeOnlyLcid(lcid))
  {
GetNumberFormatA_InvalidParameter:
    SetLastError(ERROR_INVALID_PARAMETER);
    return 0;
  }

  if (!(dwFlags & LOCALE_USE_CP_ACP))
  {
    const NLS_FORMAT_NODE *node = NLS_GetFormats(lcid, dwFlags);
    if (!node)
      goto GetNumberFormatA_InvalidParameter;
    cp = node->dwCodePage;
  }

  if (lpFormat)
  {
    memcpy(&fmt, lpFormat, sizeof(fmt));
    pfmt = &fmt;
    if (lpFormat->lpDecimalSep)
    {
      MultiByteToWideChar(cp, 0, lpFormat->lpDecimalSep, -1, szDec, sizeof(szDec)/sizeof(WCHAR));
      fmt.lpDecimalSep = szDec;
    }
    if (lpFormat->lpThousandSep)
    {
      MultiByteToWideChar(cp, 0, lpFormat->lpThousandSep, -1, szGrp, sizeof(szGrp)/sizeof(WCHAR));
      fmt.lpThousandSep = szGrp;
    }
  }

  if (lpszValue)
    MultiByteToWideChar(cp, 0, lpszValue, -1, szIn, sizeof(szIn)/sizeof(WCHAR));

  if (cchOut > (int)(sizeof(szOut)/sizeof(WCHAR)))
    cchOut = sizeof(szOut)/sizeof(WCHAR);

  szOut[0] = '\0';

  iRet = GetNumberFormatW(lcid, dwFlags, lpszValue ? szIn : NULL, pfmt,
                          lpNumberStr ? szOut : NULL, cchOut);

  if (szOut[0] && lpNumberStr)
    WideCharToMultiByte(cp, 0, szOut, -1, lpNumberStr, cchOut, 0, 0);
  return iRet;
}

/* Number parsing state flags */
#define NF_ISNEGATIVE 0x1  /* '-' found */
#define NF_ISREAL     0x2  /* '.' found */
#define NF_DIGITS     0x4  /* '0'-'9' found */
#define NF_DIGITS_OUT 0x8  /* Digits before the '.' found */
#define NF_ROUND      0x10 /* Number needs to be rounded */

/* Formatting options for Numbers */
#define NLS_NEG_PARENS      0 /* "(1.1)" */
#define NLS_NEG_LEFT        1 /* "-1.1"  */
#define NLS_NEG_LEFT_SPACE  2 /* "- 1.1" */
#define NLS_NEG_RIGHT       3 /* "1.1-"  */
#define NLS_NEG_RIGHT_SPACE 4 /* "1.1 -" */

/**************************************************************************
 *              GetNumberFormatW	(KERNEL32.@)
 *
 * See GetNumberFormatA.
 */
INT WINAPI GetNumberFormatW(LCID lcid, DWORD dwFlags,
                            LPCWSTR lpszValue,  const NUMBERFMTW *lpFormat,
                            LPWSTR lpNumberStr, int cchOut)
{
  WCHAR szBuff[128], *szOut = szBuff + sizeof(szBuff) / sizeof(WCHAR) - 1;
  WCHAR szNegBuff[8];
  const WCHAR *lpszNeg = NULL, *lpszNegStart, *szSrc;
  DWORD dwState = 0, dwDecimals = 0, dwGroupCount = 0, dwCurrentGroupCount = 0;
  INT iRet;

  TRACE("(0x%04lx,0x%08lx,%S,%p,%p,%d)\n", lcid, dwFlags, lpszValue,
        lpFormat, lpNumberStr, cchOut);

  if(NLS_isSystemLocale(lcid))
  {
      lcid = NLS_getDefaultLocale(lcid);
  }
  else if(!IsValidLocale(lcid, 0))
  {
      SetLastError(ERROR_INVALID_PARAMETER);
      return 0;
  }

  if (!lpszValue || cchOut < 0 || (cchOut > 0 && !lpNumberStr) ||
      (lpFormat && (dwFlags || !lpFormat->lpDecimalSep || !lpFormat->lpThousandSep)))
  {
GetNumberFormatW_Error:
    SetLastError(lpFormat && dwFlags ? ERROR_INVALID_FLAGS : ERROR_INVALID_PARAMETER);
    return 0;
  }

  if (!lpFormat)
  {
    const NLS_FORMAT_NODE *node = NLS_GetFormats(lcid, dwFlags);

    if (!node)
      goto GetNumberFormatW_Error;
    lpFormat = &node->fmt;
    lpszNegStart = lpszNeg = GetNegative(node);
  }
  else
  {
    GetLocaleInfoW(lcid, LOCALE_SNEGATIVESIGN|(dwFlags & LOCALE_NOUSEROVERRIDE),
                   szNegBuff, sizeof(szNegBuff)/sizeof(WCHAR));
    lpszNegStart = lpszNeg = szNegBuff;
  }
  lpszNeg = lpszNeg + strlenW(lpszNeg) - 1;

  dwFlags &= (LOCALE_NOUSEROVERRIDE|LOCALE_USE_CP_ACP);

  /* Format the number backwards into a temporary buffer */

  szSrc = lpszValue;
  *szOut-- = '\0';

  /* Check the number for validity */
  while (*szSrc)
  {
    if (*szSrc >= '0' && *szSrc <= '9')
    {
      dwState |= NF_DIGITS;
      if (dwState & NF_ISREAL)
        dwDecimals++;
    }
    else if (*szSrc == '-')
    {
      if (dwState)
        goto GetNumberFormatW_Error; /* '-' not first character */
      dwState |= NF_ISNEGATIVE;
    }
    else if (*szSrc == '.')
    {
      if (dwState & NF_ISREAL)
        goto GetNumberFormatW_Error; /* More than one '.' */
      dwState |= NF_ISREAL;
    }
    else
      goto GetNumberFormatW_Error; /* Invalid char */
    szSrc++;
  }
  szSrc--; /* Point to last character */

  if (!(dwState & NF_DIGITS))
    goto GetNumberFormatW_Error; /* No digits */

  /* Add any trailing negative sign */
  if (dwState & NF_ISNEGATIVE)
  {
    switch (lpFormat->NegativeOrder)
    {
    case NLS_NEG_PARENS:
      *szOut-- = ')';
      break;
    case NLS_NEG_RIGHT:
    case NLS_NEG_RIGHT_SPACE:
      while (lpszNeg >= lpszNegStart)
        *szOut-- = *lpszNeg--;
     if (lpFormat->NegativeOrder == NLS_NEG_RIGHT_SPACE)
       *szOut-- = ' ';
      break;
    }
  }

  /* Copy all digits up to the decimal point */
  if (!lpFormat->NumDigits)
  {
    if (dwState & NF_ISREAL)
    {
      while (*szSrc != '.') /* Don't write any decimals or a separator */
      {
        if (*szSrc >= '5' || (*szSrc == '4' && (dwState & NF_ROUND)))
          dwState |= NF_ROUND;
        else
          dwState &= ~NF_ROUND;
        szSrc--;
      }
      szSrc--;
    }
  }
  else
  {
    LPWSTR lpszDec = lpFormat->lpDecimalSep + strlenW(lpFormat->lpDecimalSep) - 1;

    if (dwDecimals <= lpFormat->NumDigits)
    {
      dwDecimals = lpFormat->NumDigits - dwDecimals;
      while (dwDecimals--)
        *szOut-- = '0'; /* Pad to correct number of dp */
    }
    else
    {
      dwDecimals -= lpFormat->NumDigits;
      /* Skip excess decimals, and determine if we have to round the number */
      while (dwDecimals--)
      {
        if (*szSrc >= '5' || (*szSrc == '4' && (dwState & NF_ROUND)))
          dwState |= NF_ROUND;
        else
          dwState &= ~NF_ROUND;
        szSrc--;
      }
    }

    if (dwState & NF_ISREAL)
    {
      while (*szSrc != '.')
      {
        if (dwState & NF_ROUND)
        {
          if (*szSrc == '9')
            *szOut-- = '0'; /* continue rounding */
          else
          {
            dwState &= ~NF_ROUND;
            *szOut-- = (*szSrc)+1;
          }
          szSrc--;
        }
        else
          *szOut-- = *szSrc--; /* Write existing decimals */
      }
      szSrc--; /* Skip '.' */
    }

    while (lpszDec >= lpFormat->lpDecimalSep)
      *szOut-- = *lpszDec--; /* Write decimal separator */
  }

  dwGroupCount = lpFormat->Grouping == 32 ? 3 : lpFormat->Grouping;

  /* Write the remaining whole number digits, including grouping chars */
  while (szSrc >= lpszValue && *szSrc >= '0' && *szSrc <= '9')
  {
    if (dwState & NF_ROUND)
    {
      if (*szSrc == '9')
        *szOut-- = '0'; /* continue rounding */
      else
      {
        dwState &= ~NF_ROUND;
        *szOut-- = (*szSrc)+1;
      }
      szSrc--;
    }
    else
      *szOut-- = *szSrc--;

    dwState |= NF_DIGITS_OUT;
    dwCurrentGroupCount++;
    if (szSrc >= lpszValue && dwCurrentGroupCount == dwGroupCount && *szSrc != '-')
    {
      LPWSTR lpszGrp = lpFormat->lpThousandSep + strlenW(lpFormat->lpThousandSep) - 1;

      while (lpszGrp >= lpFormat->lpThousandSep)
        *szOut-- = *lpszGrp--; /* Write grouping char */

      dwCurrentGroupCount = 0;
      if (lpFormat->Grouping == 32)
        dwGroupCount = 2; /* Indic grouping: 3 then 2 */
    }
  }
  if (dwState & NF_ROUND)
  {
    *szOut-- = '1'; /* e.g. .6 > 1.0 */
  }