This source file includes following definitions.
- u8_conv_from_encoding
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19 #include <config.h>
20
21
22 #include "uniconv.h"
23
24 #include <errno.h>
25 #include <stdlib.h>
26 #include <string.h>
27
28 #include "c-strcaseeq.h"
29 #include "striconveha.h"
30 #include "unistr.h"
31
32 uint8_t *
33 u8_conv_from_encoding (const char *fromcode,
34 enum iconv_ilseq_handler handler,
35 const char *src, size_t srclen,
36 size_t *offsets,
37 uint8_t *resultbuf, size_t *lengthp)
38 {
39 if (STRCASEEQ (fromcode, "UTF-8", 'U','T','F','-','8',0,0,0,0))
40 {
41
42 uint8_t *result;
43
44 if (u8_check ((const uint8_t *) src, srclen))
45 {
46 errno = EILSEQ;
47 return NULL;
48 }
49
50 if (offsets != NULL)
51 {
52 size_t i;
53
54 for (i = 0; i < srclen; )
55 {
56 int count = u8_mblen ((const uint8_t *) src + i, srclen - i);
57
58 if (count <= 0)
59 abort ();
60 offsets[i] = i;
61 i++;
62 while (--count > 0)
63 offsets[i++] = (size_t)(-1);
64 }
65 }
66
67
68 if (resultbuf != NULL && *lengthp >= srclen)
69 result = resultbuf;
70 else
71 {
72 result = (uint8_t *) malloc (srclen > 0 ? srclen : 1);
73 if (result == NULL)
74 {
75 errno = ENOMEM;
76 return NULL;
77 }
78 }
79
80 if (srclen > 0)
81 memcpy ((char *) result, src, srclen);
82 *lengthp = srclen;
83 return result;
84 }
85 else
86 {
87 char *result = (char *) resultbuf;
88 size_t length = *lengthp;
89
90 if (mem_iconveha (src, srclen, fromcode, "UTF-8", true, handler,
91 offsets, &result, &length) < 0)
92 return NULL;
93
94 if (result == NULL)
95 {
96 result = (char *) malloc (1);
97 if (result == NULL)
98 {
99 errno = ENOMEM;
100 return NULL;
101 }
102 }
103 *lengthp = length;
104 return (uint8_t *) result;
105 }
106 }