diff options
author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk4maowdbl.ctr |
Initial commit
Diffstat (limited to 'support/dktools/dk4maowdbl.ctr')
-rw-r--r-- | support/dktools/dk4maowdbl.ctr | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/support/dktools/dk4maowdbl.ctr b/support/dktools/dk4maowdbl.ctr new file mode 100644 index 0000000000..c48681d1ac --- /dev/null +++ b/support/dktools/dk4maowdbl.ctr @@ -0,0 +1,400 @@ +%% options + +copyright owner = Dirk Krause +copyright year = 2015-xxxx +license = bsd + + + +%% header + +/** @file + Double to wchar_t text conversion using the more secure + _snwprintf_s(), _snwprintf() or snwprintf() functions instead + of swprintf() if available. + + CRT on Windows: Required. +*/ + +#ifndef DK4CONF_H_INCLUDED +#include "dk4conf.h" +#endif + +#ifndef DK4TYPES_H_INCLUDED +#include "dk4types.h" +#endif + +#ifndef DK4ERROR_H_INCLUDED +#include "dk4error.h" +#endif + +#if DK4_HAVE_WCHAR_H +#ifndef WCHAR_H_INCLUDED +#include <wchar.h> +#define WCHAR_H_INCLUDED 1 +#endif +#endif + +#ifndef STDLIB_H_INCLUDED +#include <stdlib.h> +#define STDLIB_H_INCLUDED 1 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** Convert double value to string. + @param dptr Destination buffer pointer. + @param szdptr Size of destination buffer (number of wchar_t). + @param v Value to convert. + @param exact Flag: Write enough digits to allow exact restoration. + @param minimize Minimize exact respresentation. + @param erp Error report, may be NULL. + @return 1 on success, 0 on error. + + Error codes: + - DK4_E_INVALID_ARGUMENTS<br> + if dptr is NULL or szdptr is less than 2, + - DK4_E_BUFFER_TOO_SMALL<br> + if the destination buffer is too small to store the string. +*/ + +int +dk4ma_write_wc_double( + wchar_t *dptr, size_t szdptr, double v, int exact, int minimize, dk4_er_t *erp +); + +#ifdef __cplusplus +} +#endif + + +%% module + +#include "dk4conf.h" +#include "dk4types.h" + +#if DK4_HAVE_LOCALE_H +#ifndef LOCALE_H_INCLUDED +#include <locale.h> +#define LOCALE_H_INCLUDED 1 +#endif +#endif + +#include "dk4mem.h" +#include "dk4mao8dbl.h" +#include "dk4maowdbl.h" +#include "dk4str8.h" +#include "dk4strw.h" + + + +/** Locale to user for conversion. +*/ +static const char locale_kw[] = { "C" }; + + + +/** Convert double value to string. + @param dptr Destination buffer pointer. + @param szdptr Size of destination buffer (number of wchar_t). + @param v Value to convert. + @param exact Flag: Write enough digits to allow exact restoration. + @param minimize Minimize exact respresentation. + @param erp Error report, may be NULL. + @return 1 on success, 0 on error. + + Error codes: + - DK4_E_INVALID_ARGUMENTS<br> + if dptr is NULL or szdptr is less than 2, + - DK4_E_BUFFER_TOO_SMALL<br> + if the destination buffer is too small to store the string. +*/ +static +void +dk4double_squeeze_wc_string(wchar_t *buf) +{ + wchar_t *ptre = NULL; + wchar_t *ptrdot = NULL; + wchar_t *ptrcom = NULL; + wchar_t *ptrcut = NULL; + wchar_t *ptr; + int useexp = 1; + $? "+ dk4double_squeeze_wc_string \"%!ws\"", TR_LSTR(buf) + if (NULL != buf) { + ptr = buf; + while(L'\0' != *ptr) { + if ((L'e' == *ptr) || (L'E' == *ptr)) { + if (NULL == ptre) { ptre = ptr; } + } else { + if (L'.' == *ptr) { + if (NULL == ptrdot) { ptrdot = ptr; } + } else { + if (L',' == *ptr) { + if (NULL == ptrcom) { ptrcom = ptr; } + } + } + } + ptr++; + } + if (NULL != ptre) { $? ". check exponent" + *ptre = '\0'; + ptr = ptre; + ptr++; + if ((L'+' == *ptr) || (L'0' == *ptr)) { $? ". leading + or 0" + useexp = 0; + ptr++; + while(L'\0' != *ptr) { + if (L'0' != *ptr) { $? ". non-0 char \"%c\"", *ptr + useexp = 1; + } + ptr++; + } + } + } + if (NULL != ptrdot) { + ptrdot++; + if (L'\0' != *ptrdot) { $? ". chars after dot" + ptrdot++; + while(L'\0' != *ptrdot) { $? ". check \"%c\"", *ptrdot + if (L'0' == *ptrdot) { + if (NULL == ptrcut) { + ptrcut = ptrdot; $? ". cut" + } + } else { + ptrcut = NULL; $? ". no cut" + } + ptrdot++; + } + } + } else { + if (NULL != ptrcom) { + ptrcom++; + if (L'\0' != *ptrcom) { + ptrcom++; + while (L'\0' != *ptrcom) { + if (L'0' == *ptrcom) { + if (NULL == ptrcut) { + ptrcut = ptrcom; + } + } else { + ptrcut = NULL; + } + ptrcom++; + } + } + } + } + if ((NULL != ptre) && (0 != useexp)) { + *ptre = L'e'; + } + if (NULL != ptrcut) { + if ((NULL != ptre) && (0 != useexp)) { + while (L'\0' != *ptre) { + *(ptrcut++) = *(ptre++); + } + } + *ptrcut = L'\0'; + } + } + $? "- dk4double_squeeze_wc_string \"%!ws\"", TR_LSTR(buf) +} + + + +static +int +dk4ma_internal_write_wc_double( + wchar_t *dptr, size_t szdptr, double v, int exact, int minimize, dk4_er_t *erp +) +{ +#if DK4_HAVE__SNWPRINTF_S + /* +++ _snwprintf_s */ + wchar_t buf[64]; + int back = 0; + int res = 0; + if (NULL != dptr) { *dptr = L'\0'; } + if ((NULL != dptr) && (1 < szdptr)) { + if (0 != exact) { + res = _snwprintf_s( + buf, DK4_SIZEOF(buf,dkChar), _TRUNCATE, L"%.*e", (int)DK4_DBL_DIGITS, v + ); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + if (0 != minimize) { + dk4double_squeeze_wc_string(buf); + } + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } else { + res = _snwprintf_s( + buf, DK4_SIZEOF(buf,dkChar), _TRUNCATE, L"%g", v + ); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; + /* --- _snwprintf_s */ +#else +#if DK4_HAVE__SNWPRINTF + /* +++ _snwprintf */ + wchar_t buf[64]; + int back = 0; + int res = 0; + if (NULL != dptr) { *dptr = L'\0'; } + if ((NULL != dptr) && (1 < szdptr)) { + if (0 != exact) { + 0 = _snwprintf( + buf, DK4_SIZEOF(buf,dkChar), L"%.*e", (int)DK4_DBL_DIGITS, v + ); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + if (0 != minimize) { + dk4double_squeeze_wc_string(buf); + } + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } else { + 0 = _snwprintf( + buf, DK4_SIZEOF(buf,dkChar), L"%g", v + ); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; + /* --- _snwprintf */ +#else +#if DK4_HAVE_SNWPRINTF + wchar_t buf[64]; + int back = 0; + int res = 0; + if (NULL != dptr) { *dptr = L'\0'; } + if ((NULL != dptr) && (1 < szdptr)) { + if (0 != exact) { + res = snwprintf(buf,DK4_SIZEOF(buf,dkChar),L"%.*e",(int)DK4_DBL_DIGITS,v); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + if (0 != minimize) { + dk4double_squeeze_wc_string(buf); + } + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } else { + res = snwprintf(buf, DK4_SIZEOF(buf,dkChar), L"%g", v); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; +#else +#if DK4_HAVE_SWPRINTF + /* +++ swprintf */ + wchar_t buf[64]; + int back = 0; + int res = 0; + if (NULL != dptr) { *dptr = L'\0'; } + if ((NULL != dptr) && (1 < szdptr)) { + if (0 != exact) { + res = swprintf(buf,DK4_SIZEOF(buf,dkChar),L"%.*e",(int)DK4_DBL_DIGITS,v); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + if (0 != minimize) { + dk4double_squeeze_wc_string(buf); + } + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } else { + res = swprintf(buf, DK4_SIZEOF(buf,dkChar), L"%g", v); + if ((0 < res) && (res < DK4_SIZEOF(buf,dkChar))) { + buf[res] = L'\0'; + back = dk4strw_cpy_s(dptr, szdptr, buf, erp); + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; + /* --- swprintf */ +#else + char buf[64]; + char *p1; + wchar_t *p2; + int back = 0; + if ((NULL != dptr) && (1 < szdptr)) { + if (0 != dk4ma_write_c8_double(buf,sizeof(buf),v,exact,minimize,erp)) { + if (dk4str8_len(buf) < szdptr) { + p2 = dptr; p1 = buf; + while ('\0' != *p1) { + *(p2++) = (wchar_t)(*(p1++)); + } + *p2 = L'\0'; + back = 1; + } else { + dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); + } + } + } else { + dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); + } + return back; +#endif +#endif +#endif +#endif +} + + + +int +dk4ma_write_wc_double( + wchar_t *dptr, size_t szdptr, double v, int exact, int minimize, dk4_er_t *erp +) +{ + +#if (DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC) + char *oldloc = NULL; +#endif + int back = 0; + +#if (DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC) + oldloc = setlocale(LC_NUMERIC, NULL); + (void)setlocale(LC_NUMERIC, locale_kw); +#endif + back = dk4ma_internal_write_wc_double(dptr, szdptr, v, exact, minimize, erp); +#if (DK4_HAVE_SETLOCALE) && defined(LC_NUMERIC) + (void)setlocale(LC_NUMERIC, oldloc); +#endif + return back; +} + |