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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /support/dktools/dk4maiwhdu.ctr
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+%% options
+
+copyright owner = Dirk Krause
+copyright year = 2015-xxxx
+license = bsd
+
+
+
+%% header
+
+/** @file
+ Retrieve dk4_um_t value from
+ wchar_t string in hexadecimal 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, hexadecimal 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_wc_hex_dk4_um_t(
+ dk4_um_t *rp,
+ const wchar_t *src,
+ const wchar_t **endptr,
+ int atg,
+ dk4_er_t *erp
+);
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
+%% module
+
+
+
+#include "dk4maiwhdu.h"
+#include "dk4numco.h"
+#include "dk4strw.h"
+
+
+
+$!trace-include
+
+
+
+/* UNTESTED */
+int
+dk4ma_input_wc_hex_dk4_um_t(
+ dk4_um_t *rp,
+ const wchar_t *src,
+ const wchar_t **endptr,
+ int atg,
+ dk4_er_t *erp
+)
+{
+ dk4_um_t result = (dk4_um_t)0UL;
+ dk4_um_t op;
+ const wchar_t *ep = NULL;
+ int found = 0;
+ int back = 0;
+ int cc = 1;
+ $? "+ dk4ma_input_wc_hex_dk4_um_t"
+ if ((NULL != rp) && (NULL != src)) {
+ if (L'0' == src[0]) {
+ if ((L'x' == src[1]) || (L'X' == src[1])) { src++; src++; }
+ }
+ do {
+ op = (dk4_um_t)0UL;
+#if DK4_SIZEOF_WCHAR_T <= DK4_SIZEOF_INT
+ switch (*src) {
+ case L'0': { op = (dk4_um_t)0UL; } break;
+ case L'1': { op = (dk4_um_t)1UL; } break;
+ case L'2': { op = (dk4_um_t)2UL; } break;
+ case L'3': { op = (dk4_um_t)3UL; } break;
+ case L'4': { op = (dk4_um_t)4UL; } break;
+ case L'5': { op = (dk4_um_t)5UL; } break;
+ case L'6': { op = (dk4_um_t)6UL; } break;
+ case L'7': { op = (dk4_um_t)7UL; } break;
+ case L'8': { op = (dk4_um_t)8UL; } break;
+ case L'9': { op = (dk4_um_t)9UL; } break;
+ case L'a': case L'A': { op = (dk4_um_t)10UL; } break;
+ case L'b': case L'B': { op = (dk4_um_t)11UL; } break;
+ case L'c': case L'C': { op = (dk4_um_t)12UL; } break;
+ case L'd': case L'D': { op = (dk4_um_t)13UL; } break;
+ case L'e': case L'E': { op = (dk4_um_t)14UL; } break;
+ case L'f': case L'F': { op = (dk4_um_t)15UL; } break;
+ case L'\0': { $? ". string finished"
+ cc = 0;
+ if (0 != found) { $? ". digits found"
+ back = 1;
+ *rp = result;
+ } else { $? ". no digits found"
+ ep = src;
+ dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
+ }
+ } break;
+ default: {
+ cc = 0;
+ ep = src;
+ if (0 != found) {
+ switch (atg) {
+ case 2: {
+ back = 1;
+ *rp = result;
+ } break;
+ case 1: {
+ if (NULL == dk4strw_start(src, NULL)) {
+ back = 1;
+ *rp = result;
+ } else {
+ dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
+ }
+ } break;
+ default: {
+ dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
+ } break;
+ }
+ } else {
+ dk4error_set_simple_error_code(erp, DK4_E_SYNTAX);
+ }
+ } break;
+ }
+#else
+ if (L'0' == *src) {
+ op = (dk4_um_t)0UL;
+ } else {
+ if (L'1' == *src) {
+ op = (dk4_um_t)1UL;
+ } else {
+ if (L'2' == *src) {
+ op = (dk4_um_t)2UL;
+ } else {
+ if (L'3' == *src) {
+ op = (dk4_um_t)3UL;
+ } else {
+ if (L'4' == *src) {
+ op = (dk4_um_t)4UL;
+ } else {
+ if (L'5' == *src) {
+ op = (dk4_um_t)5UL;
+ } else {
+ if (L'6' == *src) {
+ op = (dk4_um_t)6UL;
+ } else {
+ if (L'7' == *src) {
+ op = (dk4_um_t)7UL;
+ } else {
+ if (L'8' == *src) {
+ op = (dk4_um_t)8UL;
+ } else {
+ if (L'9' == *src) {
+ op = (dk4_um_t)9UL;
+ } else {
+ if ((L'A' == *src) || (L'a' == *src)) {
+ op = (dk4_um_t)10UL;
+ } else {
+ if ((L'B' == *src) || (L'b' == *src)) {
+ op = (dk4_um_t)11UL;
+ } else {
+ if ((L'C' == *src) || (L'c' == *src)) {
+ op = (dk4_um_t)12UL;
+ } else {
+ if ((L'D' == *src) || (L'd' == *src)) {
+ op = (dk4_um_t)13UL;
+ } else {
+ if ((L'E' == *src) || (L'e' == *src)) {
+ op = (dk4_um_t)14UL;
+ } else {
+ if ((L'F' == *src) || (L'f' == *src)) {
+ op = (dk4_um_t)15UL;
+ } else {
+ if (L'\0' == *src) { /* finalizer */
+ cc = 0;
+ if (0 != found) {
+ back = 1;
+ *rp = result;
+ } else {
+ ep = src;
+ dk4error_set_simple_error_code(
+ erp, DK4_E_SYNTAX
+ );
+ }
+ } else { /* any other */
+ cc = 0;
+ ep = src;
+ if (0 != found) {
+ switch (atg) {
+ case 2: {
+ back = 1;
+ *rp = result;
+ } break;
+ case 1: {
+ if (dk4strw_start(src, NULL)) {
+ dk4error_set_simple_error_code(
+ erp, DK4_E_SYNTAX
+ );
+ } else {
+ back = 1;
+ *rp = result;
+ }
+ } break;
+ default: {
+ dk4error_set_simple_error_code(
+ erp, DK4_E_SYNTAX
+ );
+ } break;
+ }
+ } else {
+ dk4error_set_simple_error_code(
+ erp, DK4_E_SYNTAX
+ );
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+ }
+#endif
+ /* after switch */
+ if (0 != cc) {
+ found = 1;
+ if ((DK4_UM_MAX / (dk4_um_t)16UL) >= result) {
+ result *= (dk4_um_t)16UL;
+ 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);
+ }
+ }
+ 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_wc_hex_dk4_um_t %d", back
+ return back;
+}
+