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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/
/*
WARNING: This file was generated by the dkct program (see
http://dktools.sourceforge.net/ for details).
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4rec18.ctr
*/
/** @file dk4rec18.c The dk4rec18 module.
*/
#line 86 "dk4rec18.ctr"
#include "dk4conf.h"
#include "dk4rec18.h"
#include "dk4mem.h"
#include "dk4utf8.h"
#if DK4_HAVE_ASSERT_H
#ifndef ASSERT_H_INCLUDED
#include <assert.h>
#define ASSERT_H_INCLUDED 1
#endif
#endif
#line 101 "dk4rec18.ctr"
size_t
dk4recode_size_c32_to_utf8(const dk4_c32_t *src, dk4_er_t *erp)
{
dk4_er_t er;
unsigned char buf[8];
size_t sz;
size_t rd = 0;
size_t back = 0;
dk4_c32_t c32 = dkC32(0);
#if DK4_USE_ASSERT
assert(NULL != src);
#endif
if (NULL != src) {
dk4error_init(&er);
while (dkC32(0) != (c32 = *(src++))) {
sz = sizeof(buf);
if (0 != dk4utf8_encode(buf, &sz, c32, &er)) {
if ((SIZE_MAX - sz) >= back) {
back += sz;
rd++;
} else {
dk4error_set_simple_error_code(&er, DK4_E_MATH_OVERFLOW);
}
}
}
if (SIZE_MAX > back) {
back++;
} else {
dk4error_set_simple_error_code(&er, DK4_E_MATH_OVERFLOW);
}
if (DK4_E_NONE != er.ec) {
back = 0;
dk4error_copy(erp, &er);
}
} else {
dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
}
return back;
}
int
dk4recode_c32_to_utf8(
char *dstb, size_t szdstb, const dk4_c32_t *src, dk4_er_t *erp
)
{
unsigned char buf[8];
size_t sz;
size_t rd = 0;
size_t used = 0;
dk4_c32_t c32 = dkC32(0);
int back = 0;
#if DK4_USE_ASSERT
assert(NULL != dstb);
assert(0 < szdstb);
assert(NULL != src);
#endif
if ((NULL != dstb) && (0 < szdstb) && (NULL != src)) {
back = 1;
while((dkC32(0) != *src) && (1 == back) && (used < szdstb)) {
c32 = *(src++);
sz = sizeof(buf);
if (0 != dk4utf8_encode(buf, &sz, c32, erp)) {
if ((szdstb - used) > sz) {
DK4_MEMCPY(&(dstb[used]),buf,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, 4, rd);
}
if (0 != back) { rd++; }
}
if (used < szdstb) {
dstb[used] = '\0';
} else {
dstb[szdstb - 1] = '\0';
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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