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/* $OpenBSD: fty_num.c,v 1.9 2015/01/23 22:48:51 krw Exp $ */ |
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/**************************************************************************** |
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* Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. * |
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* * |
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* Permission is hereby granted, free of charge, to any person obtaining a * |
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* copy of this software and associated documentation files (the * |
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* "Software"), to deal in the Software without restriction, including * |
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* without limitation the rights to use, copy, modify, merge, publish, * |
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* distribute, distribute with modifications, sublicense, and/or sell * |
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* copies of the Software, and to permit persons to whom the Software is * |
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* furnished to do so, subject to the following conditions: * |
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* * |
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* The above copyright notice and this permission notice shall be included * |
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* in all copies or substantial portions of the Software. * |
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* * |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * |
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * |
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * |
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * |
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. * |
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* * |
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* Except as contained in this notice, the name(s) of the above copyright * |
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* holders shall not be used in advertising or otherwise to promote the * |
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* sale, use or other dealings in this Software without prior written * |
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* authorization. * |
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****************************************************************************/ |
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/*************************************************************************** |
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* * |
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* Author : Juergen Pfeifer * |
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* * |
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***************************************************************************/ |
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#include "form.priv.h" |
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MODULE_ID("$Id: fty_num.c,v 1.9 2015/01/23 22:48:51 krw Exp $") |
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#if HAVE_LOCALE_H |
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#include <locale.h> |
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#endif |
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#if HAVE_LOCALE_H |
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#define isDecimalPoint(c) ((c) == ((L && L->decimal_point) ? *(L->decimal_point) : '.')) |
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#else |
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#define isDecimalPoint(c) ((c) == '.') |
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#endif |
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#if USE_WIDEC_SUPPORT |
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#define isDigit(c) (iswdigit((wint_t)(c)) || isdigit(UChar(c))) |
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#else |
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#define isDigit(c) isdigit(UChar(c)) |
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#endif |
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#define thisARG numericARG |
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typedef struct |
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{ |
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int precision; |
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double low; |
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double high; |
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struct lconv *L; |
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} |
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thisARG; |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : static void *Make_This_Type(va_list * ap) |
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| |
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| Description : Allocate structure for numeric type argument. |
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| |
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| Return Values : Pointer to argument structure or NULL on error |
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+--------------------------------------------------------------------------*/ |
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static void * |
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Make_This_Type(va_list *ap) |
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{ |
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thisARG *argn = typeMalloc(thisARG, 1); |
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if (argn) |
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{ |
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T((T_CREATE("thisARG %p"), argn)); |
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argn->precision = va_arg(*ap, int); |
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argn->low = va_arg(*ap, double); |
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argn->high = va_arg(*ap, double); |
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#if HAVE_LOCALE_H |
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argn->L = localeconv(); |
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#else |
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argn->L = NULL; |
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#endif |
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} |
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return (void *)argn; |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : static void *Copy_This_Type(const void * argp) |
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| |
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| Description : Copy structure for numeric type argument. |
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| |
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| Return Values : Pointer to argument structure or NULL on error. |
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+--------------------------------------------------------------------------*/ |
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static void * |
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Copy_This_Type(const void *argp) |
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{ |
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const thisARG *ap = (const thisARG *)argp; |
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thisARG *result = (thisARG *) 0; |
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if (argp) |
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{ |
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result = typeMalloc(thisARG, 1); |
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if (result) |
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{ |
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T((T_CREATE("thisARG %p"), result)); |
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*result = *ap; |
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} |
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} |
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return (void *)result; |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : static void Free_This_Type(void * argp) |
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| |
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| Description : Free structure for numeric type argument. |
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| |
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| Return Values : - |
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+--------------------------------------------------------------------------*/ |
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static void |
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Free_This_Type(void *argp) |
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{ |
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if (argp) |
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free(argp); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : static bool Check_This_Field(FIELD * field, |
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| const void * argp) |
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| |
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| Description : Validate buffer content to be a valid numeric value |
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| Return Values : TRUE - field is valid |
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| FALSE - field is invalid |
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+--------------------------------------------------------------------------*/ |
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static bool |
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Check_This_Field(FIELD *field, const void *argp) |
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{ |
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const thisARG *argn = (const thisARG *)argp; |
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double low = argn->low; |
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double high = argn->high; |
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int prec = argn->precision; |
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unsigned char *bp = (unsigned char *)field_buffer(field, 0); |
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char *s = (char *)bp; |
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double val = 0.0; |
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struct lconv *L = argn->L; |
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char buf[64]; |
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bool result = FALSE; |
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while (*bp && *bp == ' ') |
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bp++; |
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if (*bp) |
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{ |
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if (*bp == '-' || *bp == '+') |
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bp++; |
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#if USE_WIDEC_SUPPORT |
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if (*bp) |
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{ |
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bool blank = FALSE; |
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int state = 0; |
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int len; |
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int n; |
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wchar_t *list = _nc_Widen_String((char *)bp, &len); |
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if (list != 0) |
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{ |
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result = TRUE; |
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for (n = 0; n < len; ++n) |
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{ |
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if (blank) |
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{ |
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if (list[n] != ' ') |
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{ |
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result = FALSE; |
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break; |
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} |
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} |
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else if (list[n] == ' ') |
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{ |
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blank = TRUE; |
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} |
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else if (isDecimalPoint(list[n])) |
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{ |
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if (++state > 1) |
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{ |
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result = FALSE; |
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break; |
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} |
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} |
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else if (!isDigit(list[n])) |
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{ |
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result = FALSE; |
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break; |
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} |
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} |
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free(list); |
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} |
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} |
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#else |
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while (*bp) |
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{ |
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if (!isdigit(UChar(*bp))) |
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break; |
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bp++; |
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} |
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if (isDecimalPoint(*bp)) |
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{ |
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bp++; |
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while (*bp) |
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{ |
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if (!isdigit(UChar(*bp))) |
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break; |
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bp++; |
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} |
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} |
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while (*bp && *bp == ' ') |
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bp++; |
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result = (*bp == '\0'); |
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#endif |
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if (result) |
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{ |
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val = atof(s); |
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if (low < high) |
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{ |
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if (val < low || val > high) |
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result = FALSE; |
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} |
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if (result) |
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{ |
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snprintf(buf, sizeof(buf), "%.*f", (prec > 0 ? prec : 0), val); |
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set_field_buffer(field, 0, buf); |
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} |
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} |
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} |
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return (result); |
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} |
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/*--------------------------------------------------------------------------- |
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| Facility : libnform |
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| Function : static bool Check_This_Character( |
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| int c, |
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| const void * argp) |
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| Description : Check a character for the numeric type. |
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| Return Values : TRUE - character is valid |
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| FALSE - character is invalid |
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+--------------------------------------------------------------------------*/ |
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static bool |
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Check_This_Character(int c, const void *argp) |
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{ |
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const thisARG *argn = (const thisARG *)argp; |
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struct lconv *L = argn->L; |
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return ((isDigit(c) || |
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c == '+' || |
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c == '-' || |
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isDecimalPoint(c)) |
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? TRUE |
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: FALSE); |
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} |
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static FIELDTYPE typeTHIS = |
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{ |
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_HAS_ARGS | _RESIDENT, |
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1, /* this is mutable, so we can't be const */ |
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(FIELDTYPE *)0, |
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(FIELDTYPE *)0, |
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Make_This_Type, |
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Copy_This_Type, |
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Free_This_Type, |
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Check_This_Field, |
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Check_This_Character, |
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NULL, |
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NULL |
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}; |
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NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_NUMERIC = &typeTHIS; |
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/* fty_num.c ends here */ |