1 /*
2 Copyright (C) 2015-2021, Dirk Krause
3 SPDX-License-Identifier: BSD-3-Clause
4 */
5
6 /*
7 WARNING: This file was generated by the dkct program (see
8 http://dktools.sourceforge.net/ for details).
9 Changes you make here will be lost if dkct is run again!
10 You should modify the original source and run dkct on it.
11 Original source: dk4rec19.ctr
12 */
13
14 /** @file dk4rec19.c The dk4rec19 module.
15 */
16
17
18 #include "dk4conf.h"
19 #include <libdk4c/dk4rec19.h>
20 #include <libdk4c/dk4utf16.h>
21
22 #if DK4_HAVE_ASSERT_H
23 #ifndef ASSERT_H_INCLUDED
24 #include <assert.h>
25 #define ASSERT_H_INCLUDED 1
26 #endif
27 #endif
28
29
30 int
dk4recode_utf16_to_c32(dk4_c32_t * dstb,size_t szdstb,const dk4_c16_t * src,dk4_er_t * erp)31 dk4recode_utf16_to_c32(
32 dk4_c32_t *dstb, size_t szdstb, const dk4_c16_t *src, dk4_er_t *erp
33 )
34 {
35 dk4_utf16_decoder_t dec;
36 size_t used = 0;
37 size_t rd = 0;
38 dk4_c32_t c32 = dkC32(0);
39 int back = 0;
40
41 #if DK4_USE_ASSERT
42 assert(NULL != dstb);
43 assert(0 < szdstb);
44 assert(NULL != src);
45 #endif
46 if ((NULL != dstb) && (NULL != src) && (0 < szdstb)) {
47 back = 1;
48 dk4utf16_init(&dec);
49 while(((dk4_c16_t)0U != *src) && (1 == back) && (used < szdstb)) {
50 switch(dk4utf16_add(&dec, *(src++))) {
51 case DK4_EDSTM_FINISHED: {
52 c32 = dk4utf16_get(&dec);
53 dk4utf16_init(&dec);
54 dstb[used++] = c32;
55 } break;
56 case DK4_EDSTM_ERROR: {
57 back = 0;
58 dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 2, rd);
59 } break;
60 }
61 if (0 != back) { rd++; }
62 }
63 if (used < szdstb) {
64 dstb[used] = '\0';
65 } else {
66 dstb[szdstb - 1] = '\0';
67 back = 0;
68 dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL);
69 }
70 if (0 == dk4utf16_is_empty(&dec)) {
71 back = 0;
72 dk4error_set_elsize_nelem(erp, DK4_E_SYNTAX, 2, rd);
73 }
74 } else {
75 dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
76 }
77 return back;
78 }
79
80