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%% options
copyright owner = Dirk Krause
copyright year = 2015-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
/** @file
String recoding from ASCII to UTF-16.
CRT on Windows: Not used.
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4TYPES_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4types.h"
#else
#include <dktools-4/dk4types.h>
#endif
#endif
#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif
#ifdef __cplusplus
extern "C" {
#endif
/** Recode string from ASCII to UTF-16.
@param dstb Destination buffer.
@param szdstb Size of destination buffer (number of dk4_c16_t).
@param src Source string to convert.
@param erp Error report, may be NULL.
@return 1 on success, 0 on error.
Error codes:
- DK4_E_INVALID_ARGUMENTS<br>
if src or dstb is NULL or szdstb is 0,
- DK4_E_BUFFER_TOO_SMALL<br>
if dstb is too small,
- DK4_E_SYNTAX<br>
with the number of successfully recoded characters in nelem if a
non-recodable character was found.
*/
int
dk4recode_ascii_to_utf16(
dk4_c16_t *dstb, size_t szdstb, const char *src, dk4_er_t *erp
);
#ifdef __cplusplus
}
#endif
%% module
#include "dk4conf.h"
#include "dk4rec07.h"
#include "dk4mem.h"
#include "dk4utf16.h"
#if DK4_HAVE_ASSERT_H
#ifndef ASSERT_H_INCLUDED
#include <assert.h>
#define ASSERT_H_INCLUDED 1
#endif
#endif
int
dk4recode_ascii_to_utf16(
dk4_c16_t *dstb, size_t szdstb, const char *src, dk4_er_t *erp
)
{
dk4_c16_t buf[4];
size_t sz;
size_t used = 0;
size_t rdb = 0;
int back = 0;
unsigned char uc = '\0';
#if DK4_USE_ASSERT
assert(NULL != dstb);
assert(0 < szdstb);
assert(NULL != src);
#endif
if ((NULL != dstb) && (NULL != src) && (0 < szdstb)) {
back = 1;
while(('\0' != *src) && (1 == back) && (used < szdstb)) {
uc = (unsigned char)(*(src++));
sz = DK4_SIZEOF(buf,dk4_c16_t);
if (0 != dk4utf16_encode(buf, &sz, (dk4_c32_t)uc, erp)) {
if ((szdstb - used) > sz) {
DK4_MEMCPY(&(dstb[used]),buf,(2 * sz));
used += sz;
} else {
back = 0;
dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
}
} else {
back = 0;
dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 1, rdb);
}
if (0 != back) { rdb++; }
}
if (used < szdstb) {
dstb[used] = (dk4_c16_t)0U;
} else {
dstb[szdstb - 1] = (dk4_c16_t)0U;
back = 0;
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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