1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19
20 #include <guacamole/unicode.h>
21
22 #include <stdint.h>
23
guac_rdp_utf16_to_utf8(const unsigned char * utf16,int length,char * utf8,int size)24 void guac_rdp_utf16_to_utf8(const unsigned char* utf16, int length,
25 char* utf8, int size) {
26
27 int i;
28 const uint16_t* in_codepoint = (const uint16_t*) utf16;
29
30 /* For each UTF-16 character */
31 for (i=0; i<length; i++) {
32
33 /* Get next codepoint */
34 uint16_t codepoint = *(in_codepoint++);
35
36 /* Save codepoint as UTF-8 */
37 int bytes_written = guac_utf8_write(codepoint, utf8, size);
38 size -= bytes_written;
39 utf8 += bytes_written;
40
41 }
42
43 /* Save NULL terminator */
44 *(utf8++) = 0;
45
46 }
47
guac_rdp_utf8_to_utf16(const unsigned char * utf8,int length,char * utf16,int size)48 void guac_rdp_utf8_to_utf16(const unsigned char* utf8, int length,
49 char* utf16, int size) {
50
51 int i;
52 uint16_t* out_codepoint = (uint16_t*) utf16;
53
54 /* For each UTF-8 character */
55 for (i=0; i<length; i++) {
56
57 /* Get next codepoint */
58 int codepoint;
59 utf8 += guac_utf8_read((const char*) utf8, 4, &codepoint);
60
61 /* Save codepoint as UTF-16 */
62 *(out_codepoint++) = codepoint;
63
64 /* Stop if buffer full */
65 size -= 2;
66 if (size < 2)
67 break;
68
69 }
70
71 }
72
73