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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% header
/** @file dk4maodo.h Octal output.
*/
#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 octal 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, 1 for automatic choice.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
*/
int
dk4ma_write_octal_unsigned(
dkChar *dptr, size_t sz, dk4_um_t val, size_t padsz, dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4maodo.h"
$!trace-include
int
dk4ma_write_octal_unsigned(
dkChar *dptr, size_t sz, dk4_um_t val, size_t padsz, dk4_er_t *erp
)
{
dkChar buf[4*sizeof(dk4_um_t)+16]; /* Buffer */
size_t used = 0; /* Number of used chars */
size_t i = 0; /* Copy buffer to destination */
int cc = 1; /* Flag: Can continue */
int err = 0; /* Flag: Error occured */
int back = 0; /* Result */
if ((NULL != dptr) && (0 < sz)) { *dptr = dkT('\0'); }
if (1 == padsz) {
padsz = (8 * sizeof(dk4_um_t)) / 3;
if (0 != ((8 * sizeof(dk4_um_t)) % 3)) {
padsz++;
}
}
if ((NULL != dptr) && (0 < sz) && (padsz < sz)) {
do {
switch ((int)(val % (dk4_um_t)8UL)) {
case 0: {
if (used < sizeof(buf)) { buf[used++] = dkT('0'); } else { err = 1; }
} break;
case 1: {
if (used < sizeof(buf)) { buf[used++] = dkT('1'); } else { err = 1; }
} break;
case 2: {
if (used < sizeof(buf)) { buf[used++] = dkT('2'); } else { err = 1; }
} break;
case 3: {
if (used < sizeof(buf)) { buf[used++] = dkT('3'); } else { err = 1; }
} break;
case 4: {
if (used < sizeof(buf)) { buf[used++] = dkT('4'); } else { err = 1; }
} break;
case 5: {
if (used < sizeof(buf)) { buf[used++] = dkT('5'); } else { err = 1; }
} break;
case 6: {
if (used < sizeof(buf)) { buf[used++] = dkT('6'); } else { err = 1; }
} break;
case 7: {
if (used < sizeof(buf)) { buf[used++] = dkT('7'); } else { err = 1; }
} break;
}
val = val / (dk4_um_t)8UL;
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] = dkT('0');
}
for (i = 0; i < used; i++) {
dptr[padsz - 1 -i] = buf[i];
}
dptr[padsz] = dkT('\0');
back = 1;
} else {
for (i = 0; i < used; i++) {
dptr[i] = buf[used - 1 - i];
}
dptr[used] = dkT('\0');
back = 1;
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else { $? "! error, bug"
dk4error_set_simple_error_code(erp, DK4_E_BUG);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
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