YAZ  5.23.1
iconv_encode_wchar.c
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1 /* This file is part of the YAZ toolkit.
2  * Copyright (C) Index Data
3  * See the file LICENSE for details.
4  */
10 #if HAVE_CONFIG_H
11 #include <config.h>
12 #endif
13 
14 #include <assert.h>
15 #include <errno.h>
16 #include <string.h>
17 #if HAVE_WCHAR_H
18 #include <wchar.h>
19 #endif
20 
21 #include <yaz/xmalloc.h>
22 #include "iconv-p.h"
23 
24 struct encoder_data
25 {
26  unsigned long compose_char;
27 };
28 
29 #if HAVE_WCHAR_H
30 static size_t write_wchar_t(yaz_iconv_t cd, yaz_iconv_encoder_t en,
31  unsigned long x,
32  char **outbuf, size_t *outbytesleft)
33 {
34  unsigned char *outp = (unsigned char *) *outbuf;
35 
36  if (*outbytesleft >= sizeof(wchar_t))
37  {
38  wchar_t wch = x;
39  memcpy(outp, &wch, sizeof(wch));
40  outp += sizeof(wch);
41  (*outbytesleft) -= sizeof(wch);
42  }
43  else
44  {
46  return (size_t)(-1);
47  }
48  *outbuf = (char *) outp;
49  return 0;
50 }
51 #endif
52 
55 
56 {
57 #if HAVE_WCHAR_H
58  if (!yaz_matchstr(tocode, "wchar_t"))
59  {
60  e->write_handle = write_wchar_t;
61  return e;
62  }
63 #endif
64  return 0;
65 }
66 
67 #if HAVE_WCHAR_H
68 static unsigned long read_wchar_t(yaz_iconv_t cd, yaz_iconv_decoder_t d,
69  unsigned char *inp,
70  size_t inbytesleft, size_t *no_read)
71 {
72  unsigned long x = 0;
73 
74  if (inbytesleft < sizeof(wchar_t))
75  {
76  yaz_iconv_set_errno(cd, YAZ_ICONV_EINVAL); /* incomplete input */
77  *no_read = 0;
78  }
79  else
80  {
81  wchar_t wch;
82  memcpy(&wch, inp, sizeof(wch));
83  x = wch;
84  *no_read = sizeof(wch);
85  }
86  return x;
87 }
88 #endif
89 
92 
93 {
94 #if HAVE_WCHAR_H
95  if (!yaz_matchstr(fromcode, "wchar_t"))
96  {
97  d->read_handle = read_wchar_t;
98  return d;
99  }
100 #endif
101  return 0;
102 }
103 
104 
105 /*
106  * Local variables:
107  * c-basic-offset: 4
108  * c-file-style: "Stroustrup"
109  * indent-tabs-mode: nil
110  * End:
111  * vim: shiftwidth=4 tabstop=8 expandtab
112  */
113 
unsigned long compose_char
Header for errno utilities.
size_t(* write_handle)(yaz_iconv_t cd, yaz_iconv_encoder_t e, unsigned long x, char **outbuf, size_t *outbytesleft)
Definition: iconv-p.h:45
Internal header for iconv.
#define YAZ_ICONV_EINVAL
error code: An incomplete multibyte sequence is in input buffer
Definition: yaz-iconv.h:51
void yaz_iconv_set_errno(yaz_iconv_t cd, int no)
Definition: siconv.c:298
int yaz_matchstr(const char *s1, const char *s2)
match strings - independent of case and &#39;-&#39;
Definition: matchstr.c:42
yaz_iconv_encoder_t yaz_wchar_encoder(const char *tocode, yaz_iconv_encoder_t e)
yaz_iconv_decoder_t yaz_wchar_decoder(const char *fromcode, yaz_iconv_decoder_t d)
Header for memory handling functions.
#define YAZ_ICONV_E2BIG
error code: Not sufficient room for output buffer
Definition: yaz-iconv.h:47
unsigned long(* read_handle)(yaz_iconv_t cd, yaz_iconv_decoder_t d, unsigned char *inbuf, size_t inbytesleft, size_t *no_read)
Definition: iconv-p.h:86