YAZ  5.23.1
icu_utf16.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  */
5 
11 #if HAVE_CONFIG_H
12 #include "config.h"
13 #endif
14 
15 #if YAZ_HAVE_ICU
16 #include <yaz/xmalloc.h>
17 
18 #include <yaz/icu_I18N.h>
19 
20 #include <yaz/log.h>
21 
22 #include <string.h>
23 #include <stdlib.h>
24 #include <stdio.h>
25 #include <assert.h>
26 
27 #include <unicode/ustring.h> /* some more string fcns*/
28 #include <unicode/uchar.h> /* char names */
29 
30 struct icu_buf_utf16 *icu_buf_utf16_create(size_t capacity)
31 {
32  struct icu_buf_utf16 *buf16
33  = (struct icu_buf_utf16 *) xmalloc(sizeof(struct icu_buf_utf16));
34 
35  buf16->utf16_len = 0;
36  buf16->utf16_cap = capacity;
37  if (capacity > 0)
38  {
39  buf16->utf16 = (UChar *) xmalloc(sizeof(UChar) * capacity);
40  buf16->utf16[0] = (UChar) 0;
41  }
42  else
43  buf16->utf16 = 0;
44  return buf16;
45 }
46 
47 struct icu_buf_utf16 *icu_buf_utf16_clear(struct icu_buf_utf16 *buf16)
48 {
49  assert(buf16);
50  if (buf16->utf16)
51  buf16->utf16[0] = (UChar) 0;
52  buf16->utf16_len = 0;
53  return buf16;
54 }
55 
57  size_t capacity)
58 {
59  assert(buf16);
60  if (capacity > 0)
61  {
62  if (0 == buf16->utf16)
63  buf16->utf16 = (UChar *) xmalloc(sizeof(UChar) * capacity);
64  else
65  buf16->utf16
66  = (UChar *) xrealloc(buf16->utf16, sizeof(UChar) * capacity);
67  buf16->utf16_cap = capacity;
68  }
69  return buf16;
70 }
71 
72 
73 struct icu_buf_utf16 *icu_buf_utf16_copy(struct icu_buf_utf16 *dest16,
74  const struct icu_buf_utf16 *src16)
75 {
76  if (!dest16 || !src16 || dest16 == src16)
77  return 0;
78 
79  if (dest16->utf16_cap < src16->utf16_len)
80  icu_buf_utf16_resize(dest16, src16->utf16_len * 2);
81 
82  u_strncpy(dest16->utf16, src16->utf16, src16->utf16_len);
83  dest16->utf16_len = src16->utf16_len;
84 
85  return dest16;
86 }
87 
88 
89 struct icu_buf_utf16 *icu_buf_utf16_append(struct icu_buf_utf16 *dest16,
90  const struct icu_buf_utf16 *src16)
91 {
92  assert(dest16);
93  if (!src16)
94  return dest16;
95  if (dest16 == src16)
96  return 0;
97 
98  if (dest16->utf16_cap <= src16->utf16_len + dest16->utf16_len)
99  icu_buf_utf16_resize(dest16, dest16->utf16_len + src16->utf16_len * 2);
100 
101  u_strncpy(dest16->utf16 + dest16->utf16_len,
102  src16->utf16, src16->utf16_len);
103  dest16->utf16_len += src16->utf16_len;
104 
105  return dest16;
106 }
107 
108 
109 void icu_buf_utf16_destroy(struct icu_buf_utf16 *buf16)
110 {
111  if (buf16)
112  xfree(buf16->utf16);
113  xfree(buf16);
114 }
115 
116 void icu_buf_utf16_log(const char *lead, struct icu_buf_utf16 *src16)
117 {
118  if (src16)
119  {
120  struct icu_buf_utf8 *dst8 = icu_buf_utf8_create(0);
121  UErrorCode status = U_ZERO_ERROR;
122  icu_utf16_to_utf8(dst8, src16, &status);
123  yaz_log(YLOG_LOG, "%s=%s", lead, dst8->utf8);
124  icu_buf_utf8_destroy(dst8);
125  }
126  else
127  {
128  yaz_log(YLOG_LOG, "%s=NULL", lead);
129  }
130 }
131 
132 #endif /* YAZ_HAVE_ICU */
133 
134 /*
135  * Local variables:
136  * c-basic-offset: 4
137  * c-file-style: "Stroustrup"
138  * indent-tabs-mode: nil
139  * End:
140  * vim: shiftwidth=4 tabstop=8 expandtab
141  */
142 
#define xrealloc(o, x)
utility macro which calls xrealloc_f
Definition: xmalloc.h:47
uint8_t * utf8
Definition: icu_I18N.h:80
#define YLOG_LOG
log level: log (regular)
Definition: log.h:48
void icu_buf_utf16_log(const char *lead, struct icu_buf_utf16 *src16)
UChar * utf16
Definition: icu_I18N.h:54
UErrorCode icu_utf16_to_utf8(struct icu_buf_utf8 *dest8, const struct icu_buf_utf16 *src16, UErrorCode *status)
Internal header for ICU utilities.
#define xfree(x)
utility macro which calls xfree_f
Definition: xmalloc.h:53
int32_t utf16_len
Definition: icu_I18N.h:55
void icu_buf_utf16_destroy(struct icu_buf_utf16 *buf16)
struct icu_buf_utf16 * icu_buf_utf16_resize(struct icu_buf_utf16 *buf16, size_t capacity)
int32_t utf16_cap
Definition: icu_I18N.h:56
#define xmalloc(x)
utility macro which calls malloc_f
Definition: xmalloc.h:49
struct icu_buf_utf16 * icu_buf_utf16_create(size_t capacity)
Header for memory handling functions.
void yaz_log(int level, const char *fmt,...)
Writes log message.
Definition: log.c:485
struct icu_buf_utf16 * icu_buf_utf16_clear(struct icu_buf_utf16 *buf16)
struct icu_buf_utf16 * icu_buf_utf16_append(struct icu_buf_utf16 *dest16, const struct icu_buf_utf16 *src16)
Logging utility.
struct icu_buf_utf16 * icu_buf_utf16_copy(struct icu_buf_utf16 *dest16, const struct icu_buf_utf16 *src16)
void icu_buf_utf8_destroy(struct icu_buf_utf8 *buf8)
struct icu_buf_utf8 * icu_buf_utf8_create(size_t capacity)