/**************************************************************************** * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * * "Software"), to deal in the Software without restriction, including * * without limitation the rights to use, copy, modify, merge, publish, * * distribute, distribute with modifications, sublicense, and/or sell * * copies of the Software, and to permit persons to whom the Software is * * furnished to do so, subject to the following conditions: * * * * The above copyright notice and this permission notice shall be included * * in all copies or substantial portions of the Software. * * * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * * * Except as contained in this notice, the name(s) of the above copyright * * holders shall not be used in advertising or otherwise to promote the * * sale, use or other dealings in this Software without prior written * * authorization. * ****************************************************************************/ /*************************************************************************** * * * Author : Juergen Pfeifer * * * ***************************************************************************/ #include "form.priv.h" MODULE_ID("$Id: fty_num.c,v 1.8 2010/01/12 23:22:07 nicm Exp $") #if HAVE_LOCALE_H #include #endif #if HAVE_LOCALE_H #define isDecimalPoint(c) ((c) == ((L && L->decimal_point) ? *(L->decimal_point) : '.')) #else #define isDecimalPoint(c) ((c) == '.') #endif #if USE_WIDEC_SUPPORT #define isDigit(c) (iswdigit((wint_t)(c)) || isdigit(UChar(c))) #else #define isDigit(c) isdigit(UChar(c)) #endif #define thisARG numericARG typedef struct { int precision; double low; double high; struct lconv *L; } thisARG; /*--------------------------------------------------------------------------- | Facility : libnform | Function : static void *Make_This_Type(va_list * ap) | | Description : Allocate structure for numeric type argument. | | Return Values : Pointer to argument structure or NULL on error +--------------------------------------------------------------------------*/ static void * Make_This_Type(va_list *ap) { thisARG *argn = typeMalloc(thisARG, 1); if (argn) { T((T_CREATE("thisARG %p"), argn)); argn->precision = va_arg(*ap, int); argn->low = va_arg(*ap, double); argn->high = va_arg(*ap, double); #if HAVE_LOCALE_H argn->L = localeconv(); #else argn->L = NULL; #endif } return (void *)argn; } /*--------------------------------------------------------------------------- | Facility : libnform | Function : static void *Copy_This_Type(const void * argp) | | Description : Copy structure for numeric type argument. | | Return Values : Pointer to argument structure or NULL on error. +--------------------------------------------------------------------------*/ static void * Copy_This_Type(const void *argp) { const thisARG *ap = (const thisARG *)argp; thisARG *result = (thisARG *) 0; if (argp) { result = typeMalloc(thisARG, 1); if (result) { T((T_CREATE("thisARG %p"), result)); *result = *ap; } } return (void *)result; } /*--------------------------------------------------------------------------- | Facility : libnform | Function : static void Free_This_Type(void * argp) | | Description : Free structure for numeric type argument. | | Return Values : - +--------------------------------------------------------------------------*/ static void Free_This_Type(void *argp) { if (argp) free(argp); } /*--------------------------------------------------------------------------- | Facility : libnform | Function : static bool Check_This_Field(FIELD * field, | const void * argp) | | Description : Validate buffer content to be a valid numeric value | | Return Values : TRUE - field is valid | FALSE - field is invalid +--------------------------------------------------------------------------*/ static bool Check_This_Field(FIELD *field, const void *argp) { const thisARG *argn = (const thisARG *)argp; double low = argn->low; double high = argn->high; int prec = argn->precision; unsigned char *bp = (unsigned char *)field_buffer(field, 0); char *s = (char *)bp; double val = 0.0; struct lconv *L = argn->L; char buf[64]; bool result = FALSE; while (*bp && *bp == ' ') bp++; if (*bp) { if (*bp == '-' || *bp == '+') bp++; #if USE_WIDEC_SUPPORT if (*bp) { bool blank = FALSE; int state = 0; int len; int n; wchar_t *list = _nc_Widen_String((char *)bp, &len); if (list != 0) { result = TRUE; for (n = 0; n < len; ++n) { if (blank) { if (list[n] != ' ') { result = FALSE; break; } } else if (list[n] == ' ') { blank = TRUE; } else if (isDecimalPoint(list[n])) { if (++state > 1) { result = FALSE; break; } } else if (!isDigit(list[n])) { result = FALSE; break; } } free(list); } } #else while (*bp) { if (!isdigit(UChar(*bp))) break; bp++; } if (isDecimalPoint(*bp)) { bp++; while (*bp) { if (!isdigit(UChar(*bp))) break; bp++; } } while (*bp && *bp == ' ') bp++; result = (*bp == '\0'); #endif if (result) { val = atof(s); if (low < high) { if (val < low || val > high) result = FALSE; } if (result) { snprintf(buf, sizeof(buf), "%.*f", (prec > 0 ? prec : 0), val); set_field_buffer(field, 0, buf); } } } return (result); } /*--------------------------------------------------------------------------- | Facility : libnform | Function : static bool Check_This_Character( | int c, | const void * argp) | | Description : Check a character for the numeric type. | | Return Values : TRUE - character is valid | FALSE - character is invalid +--------------------------------------------------------------------------*/ static bool Check_This_Character(int c, const void *argp) { const thisARG *argn = (const thisARG *)argp; struct lconv *L = argn->L; return ((isDigit(c) || c == '+' || c == '-' || isDecimalPoint(c)) ? TRUE : FALSE); } static FIELDTYPE typeTHIS = { _HAS_ARGS | _RESIDENT, 1, /* this is mutable, so we can't be const */ (FIELDTYPE *)0, (FIELDTYPE *)0, Make_This_Type, Copy_This_Type, Free_This_Type, Check_This_Field, Check_This_Character, NULL, NULL }; NCURSES_EXPORT_VAR(FIELDTYPE*) TYPE_NUMERIC = &typeTHIS; /* fty_num.c ends here */