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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% header
/** @file
Convert dk4_um_t / dk4_im_t
to wchar_t strings in decimal notation.
*/
#ifndef DK4CONF_H_INCLUDED
#include "dk4conf.h"
#endif
#ifndef DK4TYPES_H_INCLUDED
#include "dk4types.h"
#endif
#ifndef DK4ERROR_H_INCLUDED
#include "dk4error.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Write unsigned number to char string in decimal notation.
@param dptr Pointer to buffer for string.
@param sz Buffer size (number of char).
@param val Value to write.
@param padsz Minimum number of digits.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk4ma_write_wc_decimal_unsigned(
wchar_t *dptr, size_t sz, dk4_um_t val, size_t padsz, dk4_er_t *erp
);
/** Write signed number to char string in decimal notation.
@param dptr Pointer to buffer for string.
@param sz Buffer size (number of char).
@param val Value to write.
@param padsz Minimum number of digits.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk4ma_write_wc_decimal_signed(
wchar_t *dptr, size_t sz, dk4_im_t val, size_t padsz, dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4maowd.h"
#include "dk4numco.h"
#include "dk4numl.h"
$!trace-include
int
dk4ma_write_wc_decimal_unsigned(
wchar_t *dptr, size_t sz, dk4_um_t val, size_t padsz, dk4_er_t *erp
)
{
char buf[4*sizeof(dk4_um_t) + 16]; /* Buffer */
size_t used = 0; /* Number of used characters */
size_t i = 0; /* Copy buffer to destination */
int cc = 1; /* Flag: Can continue */
int err = 0; /* Flag: Error occued */
int back = 0; /* Function result */
if ((NULL != dptr) && (0 < sz)) {
*dptr = L'\0';
}
if (1 == padsz) {
padsz = dk4numlength(sizeof(dk4_um_t), 0);
}
if ((NULL != dptr) && (0 < sz) && (padsz < sz)) {
do {
switch((int)(val % (dk4_um_t)10UL)) {
case 0: {
if(used < sizeof(buf)) { buf[used++] = '0'; } else { err = 1; }
} break;
case 1: {
if(used < sizeof(buf)) { buf[used++] = '1'; } else { err = 1; }
} break;
case 2: {
if(used < sizeof(buf)) { buf[used++] = '2'; } else { err = 1; }
} break;
case 3: {
if(used < sizeof(buf)) { buf[used++] = '3'; } else { err = 1; }
} break;
case 4: {
if(used < sizeof(buf)) { buf[used++] = '4'; } else { err = 1; }
} break;
case 5: {
if(used < sizeof(buf)) { buf[used++] = '5'; } else { err = 1; }
} break;
case 6: {
if(used < sizeof(buf)) { buf[used++] = '6'; } else { err = 1; }
} break;
case 7: {
if(used < sizeof(buf)) { buf[used++] = '7'; } else { err = 1; }
} break;
case 8: {
if(used < sizeof(buf)) { buf[used++] = '8'; } else { err = 1; }
} break;
case 9: {
if(used < sizeof(buf)) { buf[used++] = '9'; } else { err = 1; }
} break;
}
val = val / (dk4_um_t)10UL;
if ((dk4_um_t)0UL == val) { cc = 0; }
} while((1 == cc) && (0 == err));
if (0 == err) {
if (used < sz) {
if ((0 < padsz) && (used < padsz)) {
for (i = 0; i < (padsz - used); i++) {
dptr[i] = L'0';
}
for (i = 0; i < used; i++) {
dptr[padsz - 1 - i] = buf[i];
}
dptr[padsz] = L'\0';
back = 1;
} else {
for (i = 0; i < used; i++) {
dptr[i] = (wchar_t)(buf[used - 1 - i]);
}
dptr[used] = 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_BUG);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
int
dk4ma_write_wc_decimal_signed(
wchar_t *dptr, size_t sz, dk4_im_t val, size_t padsz, dk4_er_t *erp
)
{
int back = 0;
if ((NULL != dptr) && (0 < sz)) {
*dptr = L'\0';
}
if (1 == padsz) {
padsz = dk4numlength(sizeof(dk4_im_t), 1);
}
if ((NULL != dptr) && (0 < sz) && (padsz < sz)) {
if ((dk4_im_t)0L <= val) {
back = dk4ma_write_wc_decimal_unsigned(
dptr, sz, (dk4_um_t)val, padsz, erp
);
} else {
if (2 < sz) {
*(dptr++) = L'-'; sz--;
if (DK4_IM_MIN == val) {
back = dk4ma_write_wc_decimal_unsigned(
dptr, sz,
((dk4_um_t)(DK4_IM_MAX) + (dk4_um_t)1UL),
((0 < padsz) ? (padsz - 1) : 0),
erp
);
} else {
back = dk4ma_write_wc_decimal_unsigned(
dptr, sz,
(dk4_um_t)((dk4_im_t)0L - val),
((0 < padsz) ? (padsz - 1) : 0),
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;
}
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