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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
license = bsd
%% header
/** @file
Retrieve dk4_um_t value from
8 bit character string in decimal notation.
CRT on Windows: Optional, disabling CRT degrades performance.
*/
#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
/** Retrieve numeric value from string, decimal notation.
@param rp Pointer to result variable for the found value.
@param src String to check for numeric value.
@param endptr Address of pointer variable.
A pointer to the first character not processed
is stored here.
The function may also store a NULL pointer in this
variable.
@param atg Allow trailing garbage:
0=no unprocessable trailing bytes allowed,
1=trailing whitespaces allowed,
2=any trailing characters allowed.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
DK4_E_INVALID_ARGUMENTS if rp or src is NULL,
DK4_E_MATH_OVERFLOW if the number is out of range, or
DK4_E_SYNTAX if src contains illegal characters.
*/
int
dk4ma_input_c8_dec_dk4_um_t(
dk4_um_t *rp,
const char *src,
const char **endptr,
int atg,
dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4mai8ddu.h"
#include "dk4numco.h"
#include "dk4str8.h"
$!trace-include
int
dk4ma_input_c8_dec_dk4_um_t(
dk4_um_t *rp,
const char *src,
const char **endptr,
int atg,
dk4_er_t *erp
)
{
#if VERSION_BEFORE_20141007
dk4_er_t er;
#endif
dk4_um_t result= (dk4_um_t)0UL;
dk4_um_t op;
const char *ep = NULL;
int found = 0;
int back = 0;
int cc = 1;
$? "+ dk4ma_input_c8_dec_dk4_um_t \"%!8s\"", src
if ((NULL != rp) && (NULL != src)) {
#if VERSION_BEFORE_20141007
dk4error_init(&er);
#endif
do {
$? ". src = \"%!8s\"", src
op = (dk4_um_t)0UL;
switch (*src) {
case '0': { op = (dk4_um_t)0UL; } break;
case '1': { op = (dk4_um_t)1UL; } break;
case '2': { op = (dk4_um_t)2UL; } break;
case '3': { op = (dk4_um_t)3UL; } break;
case '4': { op = (dk4_um_t)4UL; } break;
case '5': { op = (dk4_um_t)5UL; } break;
case '6': { op = (dk4_um_t)6UL; } break;
case '7': { op = (dk4_um_t)7UL; } break;
case '8': { op = (dk4_um_t)8UL; } break;
case '9': { op = (dk4_um_t)9UL; } break;
case '\0': { $? ". string finished"
cc = 0;
if (0 != found) { $? ". digits found"
back = 1;
*rp = result;
} else { $? ". no digits found"
ep = src; $? ". ep=%!8s", TR_8STR(ep)
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
} break;
default: {
cc = 0; $? "! unexpected char"
ep = src; $? ". ep=%!8s", TR_8STR(ep)
if (0 != found) {
switch (atg) {
case 2: { $? ". trailing garbage allowed"
back = 1;
*rp = result;
} break;
case 1: { $? ". trailing whitespace allowed"
if (NULL == dk4str8_start(src, NULL)) {
back = 1;
*rp = result;
} else {
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
} break;
default: { $? ". no trailing chars allowed"
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
} break;
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
}
} break;
}
if (0 != cc) { $? ". process number"
found = 1;
#if VERSION_BEFORE_20141007
result = dk4ma_um_add(
dk4ma_um_mul(result, (dk4_um_t)10UL, &er),
op, &er
);
if (DK4_E_NONE != er.ec) {
cc = 0; $? "! overflow"
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
ep = src;
}
#else
if ((DK4_UM_MAX / (dk4_um_t)10UL) >= result) {
result *= (dk4_um_t)10UL;
if ((DK4_UM_MAX - op) >= result) {
result += op;
} else {
cc = 0;
ep = src;
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
} else {
cc = 0;
ep = src;
dk4error_set_simple_error_code(erp, DK4_E_MATH_OVERFLOW);
}
#endif
}
if (0 != cc) {
src++;
}
} while (0 != cc);
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
if (NULL != src) { ep = src; }
}
if (NULL != endptr) { *endptr = ep; }
$? "- dk4ma_input_c8_dec_dk4_um_t %d", back
return back;
}
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